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#1
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Wind chill and frozen pipes again
Weather forecast for this week is windy, gusts
up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#2
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Wind chill and frozen pipes again
On Monday, January 20, 2014 6:35:58 AM UTC-6, Stormin Mormon wrote:
Will the wind chill make it more likely for me to freeze pipes? It all depends how intent you are to freeze them...best of luck! |
#3
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Wind chill and frozen pipes again
On 1/20/2014 7:35 AM, Stormin Mormon wrote:
Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. The routine here is to surround mobile home with straw bales, leave faucets running at a trickle, leave cabinet doors open. Good luck. |
#4
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Wind chill and frozen pipes again
On 01/20/2014 06:35 AM, Stormin Mormon wrote:
Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. It was stated numerous times that water freezes at 32 degrees F and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. |
#5
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Wind chill and frozen pipes again
On Monday, January 20, 2014 7:16:11 AM UTC-6, philo* wrote:
and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. This is too logical for this thread/forum/poster...please take your common sense elsewhere! 8^) |
#6
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Wind chill and frozen pipes again
On 01/20/2014 07:33 AM, Bob_Villa wrote:
On Monday, January 20, 2014 7:16:11 AM UTC-6, philo wrote: and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. This is too logical for this thread/forum/poster...please take your common sense elsewhere! 8^) Yeah I know. Maybe we should discuss windshield temp. |
#7
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Wind chill and frozen pipes again
On Monday, January 20, 2014 8:16:11 AM UTC-5, philo* wrote:
On 01/20/2014 06:35 AM, Stormin Mormon wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. It was stated numerous times that water freezes at 32 degrees F and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. It's been stated numerous times that wind chill also affects how heat is removed from any object that is above ambient temp. And hence on a night when the windchill is 5F and the actual outdoor temp is 25, pipes may freeze in certain circumstances when they will not freeze if it were 25F with no windchill. Simple question. There is an unheated cabin or a house with a drafty crawlspace. Two cases: A - The forecast if for temps overnight to dip down to 25, no windchill. B - The forecast is for temps overnight to dip down to 25, 5F windchill. That's all the info you have. Do you believe the probability of water pipes freezing is equal in both cases, yes or no? BTW, thanks for taking the obvious bait from Stormin and starting this all over again. |
#8
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Wind chill and frozen pipes again
On Monday, January 20, 2014 8:11:13 AM UTC-6, wrote:
Simple question. There is an unheated cabin or a house with a drafty crawlspace. Two cases: A - The forecast if for temps overnight to dip down to 25, no windchill. B - The forecast is for temps overnight to dip down to 25, 5F windchill. That's all the info you have. Do you believe the probability of water pipes freezing is equal in both cases, yes or no? BTW, thanks for taking the obvious bait from Stormin and starting this all over again. It would be nil in both cases since the threshold is below 20 degrees for pipes to burst. BTW, you have also taken the bait! *L* |
#9
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 06:11:13 -0800 (PST), "
wrote: It's been stated numerous times that wind chill also affects how heat is removed from any object that is above ambient temp. And hence on a night when the windchill is 5F and the actual outdoor temp is 25, pipes may freeze in certain circumstances when they will not freeze if it were 25F with no windchill. Simple question. There is an unheated cabin or a house with a drafty crawlspace. Two cases: A - The forecast if for temps overnight to dip down to 25, no windchill. B - The forecast is for temps overnight to dip down to 25, 5F windchill. That's all the info you have. Do you believe the probability of water pipes freezing is equal in both cases, yes or no? BTW, thanks for taking the obvious bait from Stormin and starting this all over again. Windchill and wind are not the same thing. Windchill is a calculation of the effect of wind on human skin and should be reserved for discussing that effect. As you point out, however, wind affects other things. Not by the evaporative effect skin is vulnerable to, but by warm air being moved away to be replaced by cold air. In your example above, of course the pipes could be more likely to freeze if the wind can get to the pipes because it could lower the pipe temperature to 25. But that doesn't mean the willchill number (5F in your example) means anything to pipes. Use another example of 40 degree air on a very windy day. The windchill might be well below freezing, but the pipes will never freeze because no amount of wind can lower the temperature of a dry pipe to below the 40 degree air temperature. Use windchill only when discussing the feel on your skin. But sealing your house to protecting pipes from the cold air blown in by the wind is a very good idea. |
#10
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Wind chill and frozen pipes again
On 1/20/2014 7:55 AM, Bob_Villa wrote:
On Monday, January 20, 2014 6:35:58 AM UTC-6, Stormin Mormon wrote: Will the wind chill make it more likely for me to freeze pipes? It all depends how intent you are to freeze them...best of luck! Life is made memorable by what goes wrong. OTOH, boring can be good thing. I'd rather be warm and bored indoors, compared to using a heat gun in +2F cold wind. -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#11
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Wind chill and frozen pipes again
On 1/20/2014 7:59 AM, Norminn wrote:
The routine here is to surround mobile home with straw bales, leave faucets running at a trickle, leave cabinet doors open. Good luck. If the pipes freeze, close the cabinet doors and light the bales on fire? -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#12
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Wind chill and frozen pipes again
On 1/20/2014 8:33 AM, Bob_Villa wrote:
On Monday, January 20, 2014 7:16:11 AM UTC-6, philo wrote: and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. This is too logical for this thread/forum/ poster...please take your common sense else where! 8^) By golly, that means stuff won't freeze over 32F? Really? Supposed to get into the single digits in the next couple days. -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#13
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Wind chill and frozen pipes again
On 1/20/2014 8:16 AM, philo wrote:
On 01/20/2014 06:35 AM, Stormin Mormon wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. It was stated numerous times that water freezes at 32 degrees F and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. But..........in windier conditions, a structure that isn't sealed up tight would likely get colder inside than it would without wind. |
#14
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Wind chill and frozen pipes again
On Monday, January 20, 2014 5:16:11 AM UTC-8, philo* wrote:
On 01/20/2014 06:35 AM, Stormin Mormon wrote: snip It was stated numerous times that water freezes at 32 degrees F and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. And if that pipe is kept wet and exposed to the breeze? Harry K |
#15
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon
wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. You are the Southbound end of a Northbound horse! You just had to rattle trader4's cage again didn't you? Karma is gonna get you! |
#16
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon
wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. Buy a couple of those "quebec garages" and a few rolls of gorilla tape. Set the garages up over your trailer to keep the wind off, taping them together with gorilla tape to make one BIG garage. Then leave a window open in the trailer to let some heat into the garage to keep it above 33F, and your pipes won't freeze. Make it long enough to park your Blazer inside too, and let it run to keep warm. The exhaust will put you to sleep so you won't feel the cold. How's that for an Allegheny redneck solution??? |
#17
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 10:24:32 -0500, Norminn
wrote: On 1/20/2014 8:16 AM, philo wrote: On 01/20/2014 06:35 AM, Stormin Mormon wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. It was stated numerous times that water freezes at 32 degrees F and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. But..........in windier conditions, a structure that isn't sealed up tight would likely get colder inside than it would without wind. Stormy's "redneck bungalow" will loose heat a lot faster in the wind than on a still day of the same temperature. |
#18
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Wind chill and frozen pipes again
On Monday, January 20, 2014 9:23:00 AM UTC-5, Bob_Villa wrote:
On Monday, January 20, 2014 8:11:13 AM UTC-6, wrote: Simple question. There is an unheated cabin or a house with a drafty crawlspace. Two cases: A - The forecast if for temps overnight to dip down to 25, no windchill. B - The forecast is for temps overnight to dip down to 25, 5F windchill. That's all the info you have. Do you believe the probability of water pipes freezing is equal in both cases, yes or no? BTW, thanks for taking the obvious bait from Stormin and starting this all over again. It would be nil in both cases since the threshold is below 20 degrees for pipes to burst. You failed the test. The question was about *freezing*, not bursting. BTW, you have also taken the bait! *L* No, I only responded after philo decided to start this discussion all over again. I saw the other responses and was going to say nothing to start it up again, as did other posters. But if philo wants to go over it again, then here we are. |
#19
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Wind chill and frozen pipes again
On Monday, January 20, 2014 9:32:58 AM UTC-5, Pat wrote:
On Mon, 20 Jan 2014 06:11:13 -0800 (PST), " wrote: It's been stated numerous times that wind chill also affects how heat is removed from any object that is above ambient temp. And hence on a night when the windchill is 5F and the actual outdoor temp is 25, pipes may freeze in certain circumstances when they will not freeze if it were 25F with no windchill. Simple question. There is an unheated cabin or a house with a drafty crawlspace. Two cases: A - The forecast if for temps overnight to dip down to 25, no windchill. B - The forecast is for temps overnight to dip down to 25, 5F windchill. That's all the info you have. Do you believe the probability of water pipes freezing is equal in both cases, yes or no? BTW, thanks for taking the obvious bait from Stormin and starting this all over again. Windchill and wind are not the same thing. No one ever said they were. But windchill together with temp are a proxy for windspeed. Windchill is a calculation of the effect of wind on human skin and should be reserved for discussing that effect. As you point out, however, wind affects other things. Not by the evaporative effect skin is vulnerable to, It's not primarily an evaporative effect on skin, unless you think people sweat when it's 15F out. Wind produces it's chill by taking more heat away from any object that's above ambient. That includes not only humans, but other objects as well. but by warm air being moved away to be replaced by cold air. Which is the same effect that windchill has on humans, a hot brick placed outside, or a metal pipe sticking outside a wall. YEs, it was created as a guide to how much colder it feels to humans, but that doesn't mean it's effect doesn't apply to cats, bricks and pipes. In your example above, of course the pipes could be more likely to freeze if the wind can get to the pipes because it could lower the pipe temperature to 25. But that doesn't mean the willchill number (5F in your example) means anything to pipes. It does if it's a warm pipe and it's placed outside. I have a copper water pipe that's exposed and it runs 25 ft outside. I have some small amount of water flow moving through it to prevent it from freezing. Do you think the same amount of water flow that's just sufficient to keep it from freezing when it's 20F and no windchill is going to be sufficient to keep it from freezing when the windchill is 0F? If I told you that the windchill was 20F or 0F you would not be more concerned about the pipe freezing in one situation versus the other? Use another example of 40 degree air on a very windy day. The windchill might be well below freezing, but the pipes will never freeze because no amount of wind can lower the temperature of a dry pipe to below the 40 degree air temperature. Neither I nor anyone else here ever said that windchill can cool a pipe below ambient. Use windchill only when discussing the feel on your skin. But sealing your house to protecting pipes from the cold air blown in by the wind is a very good idea. The fact that you don't understand that windchill has a similar effect on objects other than humans doesn't mean it's not valuable information that can be used in other situations. I noticed you didn't give an answer to the simple questions posed either. |
#20
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Wind chill and frozen pipes again
On Monday, January 20, 2014 10:51:49 AM UTC-5, Harry K wrote:
On Monday, January 20, 2014 5:16:11 AM UTC-8, philo* wrote: On 01/20/2014 06:35 AM, Stormin Mormon wrote: snip It was stated numerous times that water freezes at 32 degrees F and if the temp is above 32F no matter what the wind chill is... the temp is still above 32F and the pipes will not freeze. Wind chill is nothing more than how the body perceives the temperature. And if that pipe is kept wet and exposed to the breeze? Harry K I was thinking of saying something along those lines too, but didn't want to complicate it. I agree, evaporative effect of cooling is going to increase with windchill. But even in humans, I don't think the primary cooling effect is evaporation, unless you believe people's exposed skin sweats when it's 15F. In the winter temps when windchill is most frequently used, I would think the main component is that wind removes more heat from a human just like it would more quickly remove heat from a hot brick placed outside. In fact, in the other long thread on this, someone pointed out that long ago when scientists first tried to come up with a windchill index, they used water bottles exposed outside and how fast they froze. Strange, if windchill only affects humans, how you can measure it by how long it takes to freeze a bottle of water. |
#21
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Wind chill and frozen pipes again
On Monday, January 20, 2014 12:37:18 PM UTC-5, Gordon Shumway wrote:
On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. You are the Southbound end of a Northbound horse! You just had to rattle trader4's cage again didn't you? Karma is gonna get you! He didn't rattle my cage. The first response from a rattled cage was from philo. Everyone up to that point, had ignored it. |
#22
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon
wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? If your pipes don't perspire or leak, if they're not wet on the outside, wind chill is not a factor. It doesn't exist for pipes that are not wet on the outside. Even though plenty of people talk like it does. It doesn't exist for cars, either, unless they are wet on the outside. Not "were wet" but "are wet". It exists for people, who perspire, a little bit everywhere I think. The wind blows across the wet skin, even so slightly wet that it doesn't feel wet, and the water draws heat from the skin as it evaporates. The quantity of heat needed to make water evaporate, the heat of vaporization, is the same as the heat required to raise the temperature of the same amount of water by 15 or 20 degrees, iirc. It's the same amount of heat needed by water about to boil on a stove, to go from water to water vapor, although I guess one cannot tell by looking how much heat that is. I don't know about other animals. Dogs pant, but do they in very cold weather? Probably not, and I've never heard of a dog's tongue freezing because of wind chill. They probably keep their tongues in their mouths. When it's near zero F, and winds of 45 MPH, The wind doesn't matter, but the 0F does. should I leave a faucet dripping? If it is actually zero where the pipe is, yes. LIke under the trailer maybe, where it's not heated? What do other people with trailers do? If you live in a trailer park, you'd find more people who know abou tthis there than you willl here. Or at least they should know what they do and what happens to their pipes when they do it. Even if you don't live in one, go visit one and ask them. Isn't there usually a manager. He should know what to do. Would it be better to leave a hot drip, or a cold drip? Whichever pipe is exposed to the very cold temperature. Both of them, if that is the case. What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. Perhaps, but that won't cause the pipes to freeze. |
#23
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 06:23:00 -0800 (PST), Bob_Villa
wrote: It would be nil in both cases since the threshold is below 20 degrees for pipes to burst. How can that be. Water expands iirc between 33 and 32^F. So it reaches its greatest volume at 32. What does 20 have to do with it? I know that warmer things surrounding the water continue to heat the water, but that's only if the things are warmer. They are losing heat too for the same reason the water is. BTW, you have also taken the bait! *L* |
#24
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Wind chill and frozen pipes again
micky wrote:
....snip... I don't know about other animals. Dogs pant, but do they in very cold weather? Probably not, and I've never heard of a dog's tongue freezing because of wind chill. They probably keep their tongues in their mouths. Not my pug! His tongue is almost always hanging out his mouth, from as little as an inch to as much as 4". I don't know about windchill, but I do know that his tongue will stick to a cold metal pole if he gets too close. This isn't my dog, but I've seen this situation in real life more than once. https://d2npbuaakacvlz.cloudfront.ne...1355973015.jpg |
#25
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 14:14:33 -0500, micky
wrote: On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? If your pipes don't perspire or leak, if they're not wet on the outside, wind chill is not a factor. It doesn't exist for pipes that are not wet on the outside. Even though plenty of people talk like it does. It doesn't exist for cars, either, unless they are wet on the outside. Not "were wet" but "are wet". It exists for people, who perspire, a little bit everywhere I think. The wind blows across the wet skin, even so slightly wet that it doesn't feel wet, and the water draws heat from the skin as it evaporates. The quantity of heat needed to make water evaporate, the heat of vaporization, is the same as the heat required to raise the temperature of the same amount of water by 15 or 20 degrees, iirc. It's the same amount of heat needed by water about to boil on a stove, to go from water to water vapor, although I guess one cannot tell by looking how much heat that is. I don't know about other animals. Dogs pant, but do they in very cold weather? Probably not, and I've never heard of a dog's tongue freezing because of wind chill. They probably keep their tongues in their mouths. When it's near zero F, and winds of 45 MPH, The wind doesn't matter, but the 0F does. should I leave a faucet dripping? If it is actually zero where the pipe is, yes. LIke under the trailer maybe, where it's not heated? What do other people with trailers do? If you live in a trailer park, you'd find more people who know abou tthis there than you willl here. Or at least they should know what they do and what happens to their pipes when they do it. Even if you don't live in one, go visit one and ask them. Isn't there usually a manager. He should know what to do. Would it be better to leave a hot drip, or a cold drip? Whichever pipe is exposed to the very cold temperature. Both of them, if that is the case. What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. Perhaps, but that won't cause the pipes to freeze. Wind chill is not just about evaporation. It is "removal of heat" period. On a human body it is how quickly the body gets below it's normal temperature to the point you get frostbite. Evaporation is PART of it - but evaporation would be faster in a "dry cold" which does not feel as cold as a "damp cold" The standard Wind Chill formula for Environment Canada is: TWC=13.12+0.6215Ta-(11.37V+0.16)+(0.3965TaV +0.16) where TWC is the wind chill index, based on the Celsius temperature scale, Ta is the air temperature in degrees Celsius (°C), and V is the wind speed at 10 metres (standard anemometer height), in kilometres per hour (km/h).[10] The equivalent formula in US customary units is:[11] TWC=35.4+0.6215Ta-(35.75V+0.16) + (0.4275Ta(V+0.16) where TWC is the wind chill index, based on the Fahrenheit scale, is the air temperature, measured in °F, and is the wind speed, in mph.[12] Windchill temperature is defined only for temperatures at or below 10 °C (50 °F) and wind speeds above 4.8 kilometres per hour (3.0 mph).[11] So, in North America humidity has no "input" into the calculation. |
#26
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Wind chill and frozen pipes again
On 1/20/2014 12:37 PM, Gordon Shumway wrote:
On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon I vaguely remember someone called me an idiot. You are the Southbound end of a Northbound horse! You just had to rattle trader4's cage again didn't you? Karma is gonna get you! Yep, it's going to be near zero a couple days this week, which is -17c for centigrade folks. With the wind chill so far below zero, I think it's a good couple days to leave a faucet drip over night. I'm trying to decide to drip the hot or cold. So far, been thinking hot. Might also cardboard and staple over some windows that don't really need light coming in. -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#28
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 16:49:59 -0500, Stormin Mormon
wrote: On 1/20/2014 12:37 PM, Gordon Shumway wrote: On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon I vaguely remember someone called me an idiot. You are the Southbound end of a Northbound horse! You just had to rattle trader4's cage again didn't you? Karma is gonna get you! Yep, it's going to be near zero a couple days this week, which is -17c for centigrade folks. With the wind chill so far below zero, I think it's a good couple days to leave a faucet drip over night. I'm trying to decide to drip the hot or cold. So far, been thinking hot. Might also cardboard and staple over some windows that don't really need light coming in. Dripping the hot will still allow the cold to freeze - I'd keep them all dripping, or drain them all. |
#29
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Wind chill and frozen pipes again
On 1/20/2014 5:03 PM, wrote:
On Mon, 20 Jan 2014 16:49:59 -0500, Stormin Mormon Might also cardboard and staple over some windows that don't really need light coming in. Dripping the hot will still allow the cold to freeze - I'd keep them all dripping, or drain them all. That's wise counsell. I do remember a friend of mine who left one drip, and the other froze. -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#30
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Wind chill and frozen pipes again
On Monday, January 20, 2014 1:19:25 PM UTC-6, micky wrote:
On Mon, 20 Jan 2014 06:23:00 -0800 (PST), Bob_Villa It would be nil in both cases since the threshold is below 20 degrees for pipes to burst. How can that be. Water expands iirc between 33 and 32^F. So it reaches its greatest volume at 32. What does 20 have to do with it? From the old post: "This has nothing to do with wind chill...but it gives you pretty much the magic number for a pipe to burst. From "The Weather Channel"! When should homeowners be alert to the danger of freezing pipes? That depends, but in southern states and other areas where freezing weather is the exception rather than the rule (and where houses often do not provide adequate built-in protection), the temperature alert threshold is 20°F. This threshold is based upon research conducted by the Building Research Council at the University of Illinois. Field tests of residential water systems subjected to winter temperatures demonstrated that, for un-insulated pipes installed in an unconditioned attic, the onset of freezing occurred when the outside temperature fell to 20°F or below. This finding was supported by a survey of 71 plumbers practicing in southern states, in which the consensus was that burst-pipe problems began to appear when temperatures fell into the teens. (Note: Please disregard any wind chill! *J*)" |
#31
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 16:04:20 -0800 (PST), Bob_Villa
wrote: On Monday, January 20, 2014 1:19:25 PM UTC-6, micky wrote: On Mon, 20 Jan 2014 06:23:00 -0800 (PST), Bob_Villa It would be nil in both cases since the threshold is below 20 degrees for pipes to burst. How can that be. Water expands iirc between 33 and 32^F. So it reaches its greatest volume at 32. What does 20 have to do with it? From the old post: "This has nothing to do with wind chill...but it gives you pretty much the magic number for a pipe to burst. From "The Weather Channel"! When should homeowners be alert to the danger of freezing pipes? That depends, but in southern states and other areas where freezing weather is the exception rather than the rule (and where houses often do not provide adequate built-in protection), the temperature alert threshold is 20°F. This threshold is based upon research conducted by the Building Research Council at the University of Illinois. Field tests of residential water systems subjected to winter temperatures demonstrated that, for un-insulated pipes installed in an unconditioned attic, the onset of freezing occurred when the outside temperature fell to 20°F or below. This finding was supported by a survey of 71 plumbers practicing in southern states, in which the consensus was that burst-pipe problems began to appear when temperatures fell into the teens. (Note: Please disregard any wind chill! *J*)" Note - that is with pipes in an ATTIC. Heat rises. We are talking pipes in and under a "redneck bungalow" - close to ground level. My guess is 20F is about 5 degrees late on a breezy day and 7 degrees late on a windy one. A good row of hay bales around the bottom of the trailer before the snow fell would have helped considerably - likely making 25F safe. Mabee better. And a couple of 100 watt bulbs would then help keep them from feezing to quite a bit lower temp. Then again, I don't know just how BAD Stormy's trailer is. I know some I've seen down around Ellicotville and south would hardly pass as chicken coops up here. Likely cost twice as much to heat as my 3 bedroom two story.up here in Central Ontario |
#32
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Wind chill and frozen pipes again
Stormin Mormon wrote:
Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? When it's near zero F, and winds of 45 MPH, should I leave a faucet dripping? Would it be better to leave a hot drip, or a cold drip? What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. I was doing some more sealing cracks at my old house. The wind gets into them. Greg |
#33
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 20:38:57 +0000 (UTC), DerbyDad03
wrote: micky wrote: ...snip... I don't know about other animals. Dogs pant, but do they in very cold weather? Probably not, and I've never heard of a dog's tongue freezing because of wind chill. They probably keep their tongues in their mouths. Not my pug! His tongue is almost always hanging out his mouth, from as little as an inch to as much as 4". Well, that makes it one to nothing in favor of panting in cold weather. I had never paid attention, so I was just guessing. Tongues probably have a good blood supply, I'll bet. Is that what makes them red? I don't know about windchill, but I do know that his tongue will stick to a cold metal pole if he gets too close. No kidding? How often has he done that? Were you there to free him? This isn't my dog, but I've seen this situation in real life more than once. https://d2npbuaakacvlz.cloudfront.ne...1355973015.jpg I can see why a dog wouldn't anticipate this problem. Chidren don't either Really, how could they unless they red a lot? |
#34
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Wind chill and frozen pipes again
On Mon, 20 Jan 2014 16:04:20 -0800 (PST), Bob_Villa
wrote: On Monday, January 20, 2014 1:19:25 PM UTC-6, micky wrote: On Mon, 20 Jan 2014 06:23:00 -0800 (PST), Bob_Villa It would be nil in both cases since the threshold is below 20 degrees for pipes to burst. How can that be. Water expands iirc between 33 and 32^F. So it reaches its greatest volume at 32. What does 20 have to do with it? From the old post: "This has nothing to do with wind chill...but it gives you pretty much the magic number for a pipe to burst. From "The Weather Channel"! When should homeowners be alert to the danger of freezing pipes? That depends, but in southern states and other areas where freezing weather is the exception rather than the rule (and where houses often do not provide adequate built-in protection), the temperature alert threshold is 20°F. This threshold is based upon research conducted by the Building Research Council at the University of Illinois. Field tests of residential water systems subjected to winter temperatures demonstrated that, for un-insulated pipes installed in an unconditioned attic, the onset of freezing occurred when the outside temperature fell to 20°F or below. This finding was supported by a survey of 71 plumbers practicing in southern states, in which the consensus was that burst-pipe problems began to appear when temperatures fell into the teens. (Note: Please disregard any wind chill! *J*)" Okay. So it's the temperature in practice. Which is affected by all the factors. It makes sense. I know pipes don't burst the moment the temp hits 32, or even 31. Thanks. |
#35
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Wind chill and frozen pipes again
On Monday, January 20, 2014 10:58:57 PM UTC-5, wrote:
On Mon, 20 Jan 2014 16:04:20 -0800 (PST), Bob_Villa wrote: On Monday, January 20, 2014 1:19:25 PM UTC-6, micky wrote: On Mon, 20 Jan 2014 06:23:00 -0800 (PST), Bob_Villa It would be nil in both cases since the threshold is below 20 degrees for pipes to burst. How can that be. Water expands iirc between 33 and 32^F. So it reaches its greatest volume at 32. What does 20 have to do with it? From the old post: "This has nothing to do with wind chill...but it gives you pretty much the magic number for a pipe to burst. From "The Weather Channel"! When should homeowners be alert to the danger of freezing pipes? That depends, but in southern states and other areas where freezing weather is the exception rather than the rule (and where houses often do not provide adequate built-in protection), the temperature alert threshold is 20�F. This threshold is based upon research conducted by the Building Research Council at the University of Illinois. Field tests of residential water systems subjected to winter temperatures demonstrated that, for un-insulated pipes installed in an unconditioned attic, the onset of freezing occurred when the outside temperature fell to 20�F or below. This finding was supported by a survey of 71 plumbers practicing in southern states, in which the consensus was that burst-pipe problems began to appear when temperatures fell into the teens. (Note: Please disregard any wind chill! *J*)" Note - that is with pipes in an ATTIC. Heat rises. We are talking pipes in and under a "redneck bungalow" - close to ground level. My guess is 20F is about 5 degrees late on a breezy day and 7 degrees late on a windy one. +1 The poster took what is clearly offered as a general guideline for outside temps and freezing pipes in an *attic* and made it appear it applies to freezing pipes in general. If you have a piece of exposed pipe filled with water outside, I agree that I would expect it could easily freeze and bust long before 20F. |
#36
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Wind chill and frozen pipes again
On Monday, January 20, 2014 2:14:33 PM UTC-5, micky wrote:
On Mon, 20 Jan 2014 07:35:58 -0500, Stormin Mormon wrote: Weather forecast for this week is windy, gusts up to 45 MPH, and also temps near zero F. Will the wind chill make it more likely for me to freeze pipes? Compared to still air? If your pipes don't perspire or leak, if they're not wet on the outside, wind chill is not a factor. BS. Following that theory, a car radiator is transfering just as much heat with no air moving through it as it is with a high volume of air moving through it. It doesn't exist for pipes that are not wet on the outside. Wrong. If you have a brick that is 100F and you put it outside when it's 50F, does it cool off faster with or without a fan blowing on it? Even though plenty of people talk like it does. It doesn't exist for cars, either, unless they are wet on the outside. Not "were wet" but "are wet". Then feel free to block the airflow to your radiator. It will still transfer the same amount of heat, right? It exists for people, who perspire, a little bit everywhere I think. The wind blows across the wet skin, even so slightly wet that it doesn't feel wet, and the water draws heat from the skin as it evaporates. You completely ignore the heat removed by *convection*. It doesn't have to be wet. If it is wet, then yes that increases the heat transfer. The quantity of heat needed to make water evaporate, the heat of vaporization, is the same as the heat required to raise the temperature of the same amount of water by 15 or 20 degrees, iirc. It's the same amount of heat needed by water about to boil on a stove, to go from water to water vapor, although I guess one cannot tell by looking how much heat that is. Which has nothing to do with the situation at hand. I don't know about other animals. Dogs pant, but do they in very cold weather? Probably not, And people don't sweat on their exposed skin when it's 15F either. and I've never heard of a dog's tongue freezing because of wind chill. They probably keep their tongues in their mouths. When it's near zero F, and winds of 45 MPH, The wind doesn't matter, but the 0F does. Of course the wind matters. You think it takes just as much energy to heat a house when it 0 with a 45 MPH wind and without? Good grief. should I leave a faucet dripping? If it is actually zero where the pipe is, yes. Just if it's zero? Just a drip? Good grief. LIke under the trailer maybe, where it's not heated? What do other people with trailers do? If you live in a trailer park, you'd find more people who know abou tthis there than you willl here. Or at least they should know what they do and what happens to their pipes when they do it. Even if you don't live in one, go visit one and ask them. Yes, great idea. I live in a house and I should go survey folks who live in a trailer. Good grief. Isn't there usually a manager. He should know what to do. Would it be better to leave a hot drip, or a cold drip? Whichever pipe is exposed to the very cold temperature. Both of them, if that is the case. And I'll bet if the pipes are really exposed to the very cold, eg 0F number you cited, that they will freeze with just a drip anyway. The lower the temp, the more exposed, the more water you need flowing. What was the agreement, last time I asked? I think we all on the list agreed about our answers. I vaguely remember someone called me an idiot. I can see why. |
#37
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Wind chill and frozen pipes again
On 1/20/2014 10:58 PM, wrote:
Note - that is with pipes in an ATTIC. Heat rises. We are talking pipes in and under a "redneck bungalow" - close to ground level. My guess is 20F is about 5 degrees late on a breezy day and 7 degrees late on a windy one. A good row of hay bales around the bottom of the trailer before the snow fell would have helped considerably - likely making 25F safe. Mabee better. And a couple of 100 watt bulbs would then help keep them from feezing to quite a bit lower temp. Then again, I don't know just how BAD Stormy's trailer is. I know some I've seen down around Ellicotville and south would hardly pass as chicken coops up here. Likely cost twice as much to heat as my 3 bedroom two story.up here in Central Ontario I've not seen hay bales any where else in the trailer park, not sure it's allowed. I'd have to ask, some time. Might be able to rig some thing with fiberglass, behind the skirting. Some years ago, a couple friends and I blew cellulose into the ceiling, and that helped a lot. Used to have icicles down to the ground. From the lost heat. When I go out for more than an hour or so, I turn down the heat to 60F, figure that cuts my heat bill a bit. Only runs two or three minutes to recover when I get back. Sometimes, I'll light a stove burner during the warmup period. -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#38
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Wind chill and frozen pipes again
On 1/21/2014 12:19 AM, gregz wrote:
I was doing some more sealing cracks at my old house. The wind gets into them. Greg Caulk is good, and that "great Stuff" foam is also good. I figure any where cold air blows in, hot air has to be blowing out the other side. -- .. Christopher A. Young Learn about Jesus www.lds.org .. |
#39
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Wind chill and frozen pipes again
On 1/20/2014 9:46 AM, Stormin Mormon wrote:
On 1/20/2014 7:59 AM, Norminn wrote: The routine here is to surround mobile home with straw bales, leave faucets running at a trickle, leave cabinet doors open. Good luck. If the pipes freeze, close the cabinet doors and light the bales on fire? LOL. The point is to keep colder air out....a line of bales all around the perimeter of the home would hold some of the heat lost from pipes and floor inside the space, I presume. With faucets running slowly, that would likely add at least more heat to the space than minus-degree wind blowing through. When I lived in a house on slab and without much insulation, the prevailing north wind in winter made floors and walls at north end much cooler. |
#40
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Wind chill and frozen pipes again
On Tue, 21 Jan 2014 08:08:47 -0500, Stormin Mormon
wrote: On 1/20/2014 10:58 PM, wrote: Note - that is with pipes in an ATTIC. Heat rises. We are talking pipes in and under a "redneck bungalow" - close to ground level. My guess is 20F is about 5 degrees late on a breezy day and 7 degrees late on a windy one. A good row of hay bales around the bottom of the trailer before the snow fell would have helped considerably - likely making 25F safe. Mabee better. And a couple of 100 watt bulbs would then help keep them from feezing to quite a bit lower temp. Then again, I don't know just how BAD Stormy's trailer is. I know some I've seen down around Ellicotville and south would hardly pass as chicken coops up here. Likely cost twice as much to heat as my 3 bedroom two story.up here in Central Ontario I've not seen hay bales any where else in the trailer park, not sure it's allowed. I'd have to ask, some time. Might be able to rig some thing with fiberglass, behind the skirting. Some years ago, a couple friends and I blew cellulose into the ceiling, and that helped a lot. Used to have icicles down to the ground. From the lost heat. When I go out for more than an hour or so, I turn down the heat to 60F, figure that cuts my heat bill a bit. Only runs two or three minutes to recover when I get back. Sometimes, I'll light a stove burner during the warmup period. My brother skirted his trailer near Huntsville/Parry Sound ontario with 1 inch lumber,sealed with typar (on the inside) and backed with 3 inches of insulation and the temperature under his trailer never got below 42F - even when it is -40 out and blowing up a storm. He is on dry sand. He just installed an outdoor boiler to heat the trailer and his new shop - and running the heat line under the trailer heats the "crawlspace" enough that the floor is warm and the circulator fan on the heat exchanger (in the "furnace" hardly runs. It is an OLD trailer - was 2X3 framed - he built another 2X3 wall inside the living room and added 3 inches of insulation, as well as 6inches or more extra in the roof - the kitchen and bedrooms are still the original 3" walls and standard roof insulation. He is hoping to get the new house built next summer. |
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