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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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BUILD A SMALL STEAM CLEANER?
I need to clean some really caked on grease that is on an old engine in a
machine. I was thinking of taking a tea kettle and shutting the spring-loaded lid, inserting some 1/4" copper tubing into the lid's hole, setting the thing on a hot-plate, putting a spring on the tubing where one would hold the tubing so as to prevent fingers being burned. Any suggestions would be appreciated. j/b |
#2
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BUILD A SMALL STEAM CLEANER?
jusme wrote:
I need to clean some really caked on grease that is on an old engine in a machine. I was thinking of taking a tea kettle and shutting the spring-loaded lid, inserting some 1/4" copper tubing into the lid's hole, setting the thing on a hot-plate, putting a spring on the tubing where one would hold the tubing so as to prevent fingers being burned. Any suggestions would be appreciated. If you want to build a steam generator, here's an easy way: take an old propane bottle and follow the steps on the Web to remove the valve and prepare it for reuse: http://tinyisland.com/LPvalveRemoval.html Then you can put water in it and thread in a 3/4" plug which has been drilled and fitted with 1/4" tubing. Put the whole thing on an outdoor burner like the kind that comes with a turkey deepfrying setup, and heat it until it boils. Unless you have a valve on the tubing you won't have an overpressure problem. But it's a lot easier to use Castrol purple cleaner - spray it on, work it with a wire brush, wash it off. GWE -- Posted via a free Usenet account from http://www.teranews.com |
#3
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BUILD A SMALL STEAM CLEANER?
Thanks, Grant.
I think that I will put your idea on the back burner, pardon pun, until I need a steam cleaner for outside. I need this inside but your post suggests that my idea is feasible. I can't get in the crevices that I need to get clean with a wire brush. I will have to soak with diesel fuel and steam it and then blow dry. I definitely will make the propane bottle deal later on. j/b "Grant Erwin" wrote in message .. . jusme wrote: I need to clean some really caked on grease that is on an old engine in a machine. I was thinking of taking a tea kettle and shutting the spring-loaded lid, inserting some 1/4" copper tubing into the lid's hole, setting the thing on a hot-plate, putting a spring on the tubing where one would hold the tubing so as to prevent fingers being burned. Any suggestions would be appreciated. If you want to build a steam generator, here's an easy way: take an old propane bottle and follow the steps on the Web to remove the valve and prepare it for reuse: http://tinyisland.com/LPvalveRemoval.html Then you can put water in it and thread in a 3/4" plug which has been drilled and fitted with 1/4" tubing. Put the whole thing on an outdoor burner like the kind that comes with a turkey deepfrying setup, and heat it until it boils. Unless you have a valve on the tubing you won't have an overpressure problem. But it's a lot easier to use Castrol purple cleaner - spray it on, work it with a wire brush, wash it off. GWE -- Posted via a free Usenet account from http://www.teranews.com |
#4
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BUILD A SMALL STEAM CLEANER?
"jusme" wrote: I think that I will put your idea on the back burner, pardon pun, until I need a steam cleaner for outside. (clip) ^^^^^^^^^^^^^^^^^^^^ You can buy a small household steam cleaner for about $50. Holds about a pint of water, and does quite a bit on a single fill. Mine really works well, and I have no doubt that it would do your engine in about a half hour. |
#5
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BUILD A SMALL STEAM CLEANER?
Okay, Leo.
Thanks for that information. Where are they sold, as I may want to get some ideas from it. j/b "Leo Lichtman" wrote in message ... "jusme" wrote: I think that I will put your idea on the back burner, pardon pun, until I need a steam cleaner for outside. (clip) ^^^^^^^^^^^^^^^^^^^^ You can buy a small household steam cleaner for about $50. Holds about a pint of water, and does quite a bit on a single fill. Mine really works well, and I have no doubt that it would do your engine in about a half hour. |
#6
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BUILD A SMALL STEAM CLEANER?
Target sells a Shark Steam Blaster Jr. for $40 that comes with an
extension hose, attachments, and something you didn't mention: a safety valve. I bought one for the same purpose, cleaning up an old engine. Works fine for that, and amounts to some cheap insurance. - Bruce "jusme" wrote in : Okay, Leo. Thanks for that information. Where are they sold, as I may want to get some ideas from it. j/b "Leo Lichtman" wrote in message ... "jusme" wrote: I think that I will put your idea on the back burner, pardon pun, until I need a steam cleaner for outside. (clip) ^^^^^^^^^^^^^^^^^^^^ You can buy a small household steam cleaner for about $50. Holds about a pint of water, and does quite a bit on a single fill. Mine really works well, and I have no doubt that it would do your engine in about a half hour. |
#7
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BUILD A SMALL STEAM CLEANER?
"jusme" wrote: Thanks for that information. Where are they sold, as I may want to get some ideas from it. ^^^^^^^^^^^^^^^^ I can't help you much there, kuz I bought mine on Craig's List. The only other place I have seen them is late nite TV commercials. It is a "Scunci Steamer." Bruce Spainhower's response has caused me to delete a whole lot of what I had written. BTW, a big advantage these units have over w2hat you can buiold out of a teakettle is that they build up pressure, and deliver the steam to the nozzle at high velicity, which, I am sure, has a lot to do with their effectiveness. |
#8
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BUILD A SMALL STEAM CLEANER?
Leo,
I was going to secure the 'pouring lid' so that the only escape was through the tubing. j/b "Leo Lichtman" wrote in message ... "jusme" wrote: Thanks for that information. Where are they sold, as I may want to get some ideas from it. ^^^^^^^^^^^^^^^^ I can't help you much there, kuz I bought mine on Craig's List. The only other place I have seen them is late nite TV commercials. It is a "Scunci Steamer." Bruce Spainhower's response has caused me to delete a whole lot of what I had written. BTW, a big advantage these units have over w2hat you can buiold out of a teakettle is that they build up pressure, and deliver the steam to the nozzle at high velicity, which, I am sure, has a lot to do with their effectiveness. |
#9
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BUILD A SMALL STEAM CLEANER?
Bruce, good on ya, mite.
I will go to target and take a look. I don't know in what department but I will persevere. I didn't mention a safety since I will use it without one at first and then, install one after I get through with what I need, in case someone else uses it without realizing the danger. Thanks. j/b "Bruce Spainhower" wrote in message ... Target sells a Shark Steam Blaster Jr. for $40 that comes with an extension hose, attachments, and something you didn't mention: a safety valve. I bought one for the same purpose, cleaning up an old engine. Works fine for that, and amounts to some cheap insurance. - Bruce "jusme" wrote in : Okay, Leo. Thanks for that information. Where are they sold, as I may want to get some ideas from it. j/b "Leo Lichtman" wrote in message ... "jusme" wrote: I think that I will put your idea on the back burner, pardon pun, until I need a steam cleaner for outside. (clip) ^^^^^^^^^^^^^^^^^^^^ You can buy a small household steam cleaner for about $50. Holds about a pint of water, and does quite a bit on a single fill. Mine really works well, and I have no doubt that it would do your engine in about a half hour. |
#10
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BUILD A SMALL STEAM CLEANER?
On Dec 28, 9:41*pm, "jusme" wrote:
Bruce, good on ya, mite. I will go to target and take a look. *I don't know in what department but I will persevere. I didn't mention a safety since I will use it without one at first and then, install one after I get through with what I need, in case someone else uses it without realizing the danger. Thanks. j/b "Bruce Spainhower" wrote in message ... Target sells a Shark Steam Blaster Jr. for $40 that comes with an extension hose, attachments, and something you didn't mention: a safety valve. I bought one for the same purpose, cleaning up an old engine. Works fine for that, and amounts to some cheap insurance. - Bruce "jusme" wrote : Okay, Leo. Thanks for that information. *Where are they sold, as I may want to get some ideas from it. j/b "Leo Lichtman" wrote in message ... "jusme" wrote: * I think that I will put your idea on the back burner, pardon pun, until I need a steam cleaner for outside. (clip) ^^^^^^^^^^^^^^^^^^^^ You can buy a small household steam cleaner for about $50. *Holds about a pint of water, and does quite a bit on a single fill. *Mine really works well, and I have no doubt that it would do your engine in about a half hour.- Hide quoted text - - Show quoted text - A safety is there for a reason. If you ever see the aftermath of a boiler explosion, you will understand. TMT |
#11
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BUILD A SMALL STEAM CLEANER?
"Too_Many_Tools" wrote in message ... On Dec 28, 9:41 pm, "jusme" wrote: A safety is there for a reason. If you ever see the aftermath of a boiler explosion, you will understand. TMT As a guy who runs old steam boilers now and then, I feel a need to "pop off" (pun intended) on this. I've used steam cleaners on occasion and those that I've used are simply "open." There is no way they can build up any appreciable pressure. You light the burner and open the water valve. You get water for a while, then you get steam. Since the system is "open" there is no opportunity to build up any appreciable pressure. On the other hand, the safety on a boiler, from a practical standpoint, covers for you on two different (related) fronts. First is the situation where you clumsily get the fire a little too hot and make a little more steam than is being used. The other is when you make steam expecting it to be needed and then the hogger (who, embarrassingly, may be yourself) doesn't take it. But, in these cases, you only have a "little" too much to be disposed of. If things go horribly wrong, the safety isn't going to take care of it all and you're apt to send your dumb ass in the general direction of the moon. The safety will cover a mistake. Total stupidity is another matter... Jerry |
#12
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BUILD A SMALL STEAM CLEANER?
On Sat, 29 Dec 2007 05:48:00 GMT, "Jerry Foster"
wrote: "Too_Many_Tools" wrote in message ... On Dec 28, 9:41 pm, "jusme" wrote: A safety is there for a reason. If you ever see the aftermath of a boiler explosion, you will understand. TMT As a guy who runs old steam boilers now and then, I feel a need to "pop off" (pun intended) on this. I've used steam cleaners on occasion and those that I've used are simply "open." There is no way they can build up any appreciable pressure. You light the burner and open the water valve. You get water for a while, then you get steam. Since the system is "open" there is no opportunity to build up any appreciable pressure. On the other hand, the safety on a boiler, from a practical standpoint, covers for you on two different (related) fronts. First is the situation where you clumsily get the fire a little too hot and make a little more steam than is being used. The other is when you make steam expecting it to be needed and then the hogger (who, embarrassingly, may be yourself) doesn't take it. But, in these cases, you only have a "little" too much to be disposed of. If things go horribly wrong, the safety isn't going to take care of it all and you're apt to send your dumb ass in the general direction of the moon. The safety will cover a mistake. Total stupidity is another matter... Jerry A couple years ago I picked up the boiler from an old, industrial steam iron; electrically heated with gage tube and TWO safety blow off valves, one set for 40 and the other for 60 PSI IIRC Gerry :-)} London, Canada |
#13
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BUILD A SMALL STEAM CLEANER?
Leo's right, I forgot to mention the jet velocity the commercial one
produces. It travels a good five or six feet when you just point it across the room and hit the button. Just pay the forty bucks. You'll be happier. They're with the vacuum cleaners at Target. You can always wear a disguise to shop that department. ;-) "Leo Lichtman" wrote in news:YWidj.338103 : "jusme" wrote: Thanks for that information. Where are they sold, as I may want to get some ideas from it. ^^^^^^^^^^^^^^^^ I can't help you much there, kuz I bought mine on Craig's List. The only other place I have seen them is late nite TV commercials. It is a "Scunci Steamer." Bruce Spainhower's response has caused me to delete a whole lot of what I had written. BTW, a big advantage these units have over w2hat you can buiold out of a teakettle is that they build up pressure, and deliver the steam to the nozzle at high velicity, which, I am sure, has a lot to do with their effectiveness. |
#14
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BUILD A SMALL STEAM CLEANER?
Okay, Bruce. thanks.
I will take a look at them. j/b "Bruce Spainhower" wrote in message ... Leo's right, I forgot to mention the jet velocity the commercial one produces. It travels a good five or six feet when you just point it across the room and hit the button. Just pay the forty bucks. You'll be happier. They're with the vacuum cleaners at Target. You can always wear a disguise to shop that department. ;-) "Leo Lichtman" wrote in news:YWidj.338103 : "jusme" wrote: Thanks for that information. Where are they sold, as I may want to get some ideas from it. ^^^^^^^^^^^^^^^^ I can't help you much there, kuz I bought mine on Craig's List. The only other place I have seen them is late nite TV commercials. It is a "Scunci Steamer." Bruce Spainhower's response has caused me to delete a whole lot of what I had written. BTW, a big advantage these units have over w2hat you can buiold out of a teakettle is that they build up pressure, and deliver the steam to the nozzle at high velicity, which, I am sure, has a lot to do with their effectiveness. |
#15
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BUILD A SMALL STEAM CLEANER?
Bruce Spainhower wrote:
Leo's right, I forgot to mention the jet velocity the commercial one produces. It travels a good five or six feet when you just point it across the room and hit the button. Just pay the forty bucks. You'll be happier. They're with the vacuum cleaners at Target. You can always wear a disguise to shop that department. ;-) What kind of disguise? That's in one of the Women's parts of the store. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#16
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BUILD A SMALL STEAM CLEANER dangers
Any boiler can become dangerous when there is only a single outlet and it
becomes plugged. My friend had a kitchen pressure cooker explode when the pressure maintaining device plugged and the emergency relief valve was also plugged. Old railroad steame engines usually had 3 pressure relief valves all set about 1 psi apart. Bad thing about a boiler explosion is not only the boiler steam (and it can be way over 212 degrees, depending on the pressure) but the water volume in the boiler, which can also be way over 212 degrees. Again depending on the pressure. When the boiler ruptures, all the remain liquid water immediately flashes into steam, with the loss of the pressure. I believe the volume ratio is something like 10,000 to 1 cubic units, of water when turning into steam. And when this steam condenses, you have water at less than 211 degrees. Many ways to burned badly. -- Posted via a free Usenet account from http://www.teranews.com |
#17
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BUILD A SMALL STEAM CLEANER?
"jusme" wrote:
Any suggestions would be appreciated. Wives pressure cooker. Make sure it safety popoff valve is working. Wes |
#18
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BUILD A SMALL STEAM CLEANER?
Wes, that is a good idea except they are My pressure cookers.....love 'em;
wife is afraid of them. I plan to test one after I get over this cold. I don't really know what to use for a hose but I will figure out something, I guess. j/b "Wes" wrote in message ... "jusme" wrote: Any suggestions would be appreciated. Wives pressure cooker. Make sure it safety popoff valve is working. Wes |
#19
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BUILD A SMALL STEAM CLEANER?
replying to jusme, Mr. Wonder wrote:
Did it work? That sound really smart. May I ask doesn't work on car and truck engines? -- posted from http://www.polytechforum.com/metalwo...ner-96147-.htm |
#20
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BUILD A SMALL STEAM CLEANER dangers
replying to theChas., Ron wrote:
Water cannot be heated above 212 degrees Fahrenheit (as you mention above). Steam can be heated above the boiling point but not water. However, you are correct in the case of an explosion/rupture, the release of pressure would immediately allow the water to turn to steam. -- posted from http://www.polytechforum.com/metalwo...ner-96147-.htm |
#21
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BUILD A SMALL STEAM CLEANER dangers
On 06/10/2016 06:18 AM, Ron wrote:
replying to theChas., Ron wrote: Water cannot be heated above 212 degrees Fahrenheit (as you mention above). Steam can be heated above the boiling point but not water. However, you are correct in the case of an explosion/rupture, the release of pressure would immediately allow the water to turn to steam. Water in the liquid phase can easily be heated to above 212F, I do it in my pressure cooker all the time! Jon |
#22
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BUILD A SMALL STEAM CLEANER dangers
replying to Jon Danniken, Ron Henderson wrote:
It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. -- posted from http://www.polytechforum.com/metalwo...ner-96147-.htm |
#23
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BUILD A SMALL STEAM CLEANER dangers
On 10/06/16 20:18, Ron Henderson wrote:
replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. You're missing the point that the boiling point of water is not absolute but varies with the pressure it is subjected to. At lower pressures, below 1atm, it boils at less than 212F (100C) and at higher pressures it boils at a higher pressure such as in Jon's pressure cooker. See http://www.engineeringtoolbox.com/bo...ter-d_926.html |
#24
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BUILD A SMALL STEAM CLEANER dangers
"Ron Henderson"
wrote in message roups.com... replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. The "boiling point" is the temperature at which the liquid's vapor pressure equals the pressure of the air (or steam) above it, allowing bubbles that form at hot spots to expand against the surrounding pressure. Unlike the freezing point it is in no sense a constant, but varies with imposed conditions. In mile-high Denver water boils at ~202F/94C. Room-temperature water will boil in a vacuum chamber. In a PWR-type nuclear power plant the primary coolant water remains liquid at 600F and 2250PSI. If it accidentally boils it becomes a less effective neutron moderator and automatically decreases the rates of fission and heat production. --jsw |
#25
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BUILD A SMALL STEAM CLEANER dangers
On Fri, 10 Jun 2016 18:54:47 -0400, "Jim Wilkins"
wrote: "Ron Henderson" wrote in message groups.com... replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. The "boiling point" is the temperature at which the liquid's vapor pressure equals the pressure of the air (or steam) above it, allowing bubbles that form at hot spots to expand against the surrounding pressure. Unlike the freezing point it is in no sense a constant, but varies with imposed conditions. In mile-high Denver water boils at ~202F/94C. Room-temperature water will boil in a vacuum chamber. In a PWR-type nuclear power plant the primary coolant water remains liquid at 600F and 2250PSI. If it accidentally boils it becomes a less effective neutron moderator and automatically decreases the rates of fission and heat production. ....while dramatically increasing fear and screaming in the local population. -- Energy and persistence alter all things. --Benjamin Franklin |
#26
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BUILD A SMALL STEAM CLEANER dangers
"Larry Jaques" wrote in message
... On Fri, 10 Jun 2016 18:54:47 -0400, "Jim Wilkins" wrote: "Ron Henderson" wrote in message sgroups.com... replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. The "boiling point" is the temperature at which the liquid's vapor pressure equals the pressure of the air (or steam) above it, allowing bubbles that form at hot spots to expand against the surrounding pressure. Unlike the freezing point it is in no sense a constant, but varies with imposed conditions. In mile-high Denver water boils at ~202F/94C. Room-temperature water will boil in a vacuum chamber. In a PWR-type nuclear power plant the primary coolant water remains liquid at 600F and 2250PSI. If it accidentally boils it becomes a less effective neutron moderator and automatically decreases the rates of fission and heat production. ...while dramatically increasing fear and screaming in the local population. In Chernobyl's graphite-moderated RBMK design the rates -increase- without water. This is the resulting melted core of Reactor 4 in the basement: http://rarehistoricalphotos.com/the-...disaster-1986/ Despite the destruction and dangers they kept the three other reactors at the site operating for many years. https://matteroffactsblog.wordpress....g-power-plant/ --jsw |
#27
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BUILD A SMALL STEAM CLEANER dangers
STP - Standard Temperature and Pressure. Jack with pressure and the
temperature specs change. Take the pressure off water e.g. vacuum and you can boil it. In the reverse pressure up the water and it can't boil. e.g. no steam. Release the pressure and zap, almost instant 100% steam. Sometimes dangerously. Martin On 6/10/2016 2:18 PM, Ron Henderson wrote: replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. |
#28
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BUILD A SMALL STEAM CLEANER dangers
That was a carbon pile moderator not a water moderator. The carbon
caught on fire and there it went. Cascading, melting and more and more. Martin On 6/10/2016 8:38 PM, Jim Wilkins wrote: "Larry Jaques" wrote in message ... On Fri, 10 Jun 2016 18:54:47 -0400, "Jim Wilkins" wrote: "Ron Henderson" wrote in message roups.com... replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. The "boiling point" is the temperature at which the liquid's vapor pressure equals the pressure of the air (or steam) above it, allowing bubbles that form at hot spots to expand against the surrounding pressure. Unlike the freezing point it is in no sense a constant, but varies with imposed conditions. In mile-high Denver water boils at ~202F/94C. Room-temperature water will boil in a vacuum chamber. In a PWR-type nuclear power plant the primary coolant water remains liquid at 600F and 2250PSI. If it accidentally boils it becomes a less effective neutron moderator and automatically decreases the rates of fission and heat production. ...while dramatically increasing fear and screaming in the local population. In Chernobyl's graphite-moderated RBMK design the rates -increase- without water. This is the resulting melted core of Reactor 4 in the basement: http://rarehistoricalphotos.com/the-...disaster-1986/ Despite the destruction and dangers they kept the three other reactors at the site operating for many years. https://matteroffactsblog.wordpress....g-power-plant/ --jsw |
#29
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BUILD A SMALL STEAM CLEANER dangers
"Martin Eastburn" wrote in message
... STP - Standard Temperature and Pressure. Jack with pressure and the temperature specs change. Take the pressure off water e.g. vacuum and you can boil it. In the reverse pressure up the water and it can't boil. e.g. no steam. Release the pressure and zap, almost instant 100% steam. Sometimes dangerously. Martin This is a practical application of the energy stored in hot water under pressu https://en.wikipedia.org/wiki/Fireless_locomotive --jsw |
#30
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BUILD A SMALL STEAM CLEANER dangers
"Martin Eastburn" wrote in message
... That was a carbon pile moderator not a water moderator. The carbon caught on fire and there it went. Cascading, melting and more and more. Martin On 6/10/2016 8:38 PM, Jim Wilkins wrote: In Chernobyl's graphite-moderated RBMK design the rates -increase- without water. This is the resulting melted core of Reactor 4 in the basement: http://rarehistoricalphotos.com/the-...disaster-1986/ Despite the destruction and dangers they kept the three other reactors at the site operating for many years. https://matteroffactsblog.wordpress....g-power-plant/ --jsw http://www.world-nuclear.org/informa...-reactors.aspx "It is very different from most other power reactor designs as it derived from a design principally for plutonium production and was intended and used in Russia for both plutonium and power production." |
#31
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BUILD A SMALL STEAM CLEANER dangers
"Jim Wilkins" on Fri, 10 Jun 2016 21:38:14
-0400 typed in rec.crafts.metalworking the following: "Larry Jaques" wrote in message .. . On Fri, 10 Jun 2016 18:54:47 -0400, "Jim Wilkins" wrote: "Ron Henderson" wrote in message wsgroups.com... replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. The "boiling point" is the temperature at which the liquid's vapor pressure equals the pressure of the air (or steam) above it, allowing bubbles that form at hot spots to expand against the surrounding pressure. Unlike the freezing point it is in no sense a constant, but varies with imposed conditions. In mile-high Denver water boils at ~202F/94C. Room-temperature water will boil in a vacuum chamber. In a PWR-type nuclear power plant the primary coolant water remains liquid at 600F and 2250PSI. If it accidentally boils it becomes a less effective neutron moderator and automatically decreases the rates of fission and heat production. ...while dramatically increasing fear and screaming in the local population. In Chernobyl's graphite-moderated RBMK design the rates -increase- without water. This is the resulting melted core of Reactor 4 in the basement: http://rarehistoricalphotos.com/the-...disaster-1986/ Despite the destruction and dangers they kept the three other reactors at the site operating for many years. https://matteroffactsblog.wordpress....g-power-plant/ Something about still needing the electrical production, as I recall. -- pyotr filipivich "With Age comes Wisdom. Although more often, Age travels alone." |
#32
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BUILD A SMALL STEAM CLEANER dangers
Ron Henderson on
Fri, 10 Jun 2016 19:18:01 +0000 typed in rec.crafts.metalworking the following: replying to Jon Danniken, Ron Henderson wrote: It is impossible to heat water above it's boiling point. At that point it becomes steam. Only the steam can be heated above 212°F. Actually, you're half correct. You cannot heat water above the boiling point. But the boiling point of any material is also subject to the pressure upon it. Carbon dioxide goes from solid to gas in atmosphere, because its boiling point at that pressure is below the melting point. If you want to heat water above the boiling point, you just have to be able to contain the pressure. The Steam Institute has a booklet with tables, that as temp goes up, pressure goes up, until the critical point, after which there is apparently no difference between liquid water and gaseous water. "In water, the critical point occurs at around 647 K (374 °C) and 22.064 MPa (218 atm). As the substance approaches critical temperature, the properties of its gas and liquid phases converge, resulting in only one phase at the critical point: a homogeneous supercritical fluid." tschus pyotr -- pyotr filipivich "With Age comes Wisdom. Although more often, Age travels alone." |
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