http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

I'm not convinced that it will cool enough volume, but an interesting DIY
approach.

You do, of course, have to have enough freezer space to produce the ice
(or buy it from an offie).

Cheers

Dave R

Oh, and the "just FIVE MINUTES" is a load of ********.
Probably take days to get all the bits together.

--
Windows 8.1 on PCSpecialist box

Yes I tried this once with a number of small bags of crushed ice sticky
taped to a fan.Not really very successful
In order to make this work you need a fan with much more output and more
surface area on the cold material.

I cannot see the mentioned idea would work either. What you describe is a
bit like what a diy smoke machine used to look like but you needed dry ice
for that.
Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"David" wrote in message
...
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

I'm not convinced that it will cool enough volume, but an interesting DIY
approach.

You do, of course, have to have enough freezer space to produce the ice
(or buy it from an offie).

Cheers

Dave R

Oh, and the "just FIVE MINUTES" is a load of ********.
Probably take days to get all the bits together.

--
Windows 8.1 on PCSpecialist box

On Saturday, 4 July 2015 16:06:45 UTC+1, David wrote:
You do, of course, have to have enough freezer space to produce the ice

which will remove heat from the inside of the freezer and pass it back into the room ...

Owain

On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity and
nullifying any benefit of the reduction in temperature!




--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

wrote in message
...
On Saturday, 4 July 2015 16:06:45 UTC+1, David wrote:
You do, of course, have to have enough freezer space to produce the ice

which will remove heat from the inside of the freezer and pass it back
into the room ...

Not if the freezer isn't in the room.

On 04/07/2015 21:04, John Rumm wrote:
On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows
air
over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity and
nullifying any benefit of the reduction in temperature!





While the ice keeps the air around it below the dew point it will
actually dry the air. Its not an evaporative cooler.

In article ,
David writes:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

I'm not convinced that it will cool enough volume, but an interesting DIY
approach.

You do, of course, have to have enough freezer space to produce the ice
(or buy it from an offie).

Cheers

Dave R

Oh, and the "just FIVE MINUTES" is a load of ********.
Probably take days to get all the bits together.

Some finger-in-the-air calculations...

My air conditioner is something around 1kW. It doesn't run continuously -
I haven't measured the duty cycle, but it's probably something like 50%
in hot weather. That's an average of 500W being used to pump heat.

My freezer is around 100W. If it runs continuously just freezing bags of
water, it can only extract about 20% of the heat that the air conditioner
can. So it will not be able to provide a continuous cooling at anything
like the rate of the air conditioner.

What you could do though is to fill it with bags of frozen water over
time, and providing you only needed the cooling on about 20% of the days,
it could just keep up with that.

As someone else pointed out, if the freezer is in the house, you aren't
actually pumping the heat out.

Something similar was a proposal for air conditioning of deep
underground trains. They can't pump the heat out into the tunnels and
stations because it would become unbearable for people on the platforms.
The idea was to make large blocks of ice at the terminus (mostly well
outside centre of London), and to load these into heat exchangers on
the trains which would blow air over them as they run through London.
(Trains on some of the near-surface lines use regular aircon, as the
tunnels are much better ventilated to the outside.)

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

"John Rumm" wrote in message
...
On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows
air
over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity and
nullifying any benefit of the reduction in temperature!

Not if the air is dry in the first place. That is how evaporative coolers
work,
what the yanks call swamp coolers.

"dennis@home" wrote in message
web.com...
On 04/07/2015 21:04, John Rumm wrote:
On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows
air
over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity and
nullifying any benefit of the reduction in temperature!





While the ice keeps the air around it below the dew point

It doesnt do that. The air is never below the dew point.

it will actually dry the air.

Fraid not.

Its not an evaporative cooler.

And evaporative coolers to work if the air is dry enough.

On 04/07/2015 23:42, ratsack wrote:


"John Rumm" wrote in message
...
On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which
blows air
over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity
and nullifying any benefit of the reduction in temperature!

Not if the air is dry in the first place. That is how evaporative
coolers work,
what the yanks call swamp coolers.

Yeah, because it feels like you are in a swamp if you use one.
If the air is dry then a fan will keep you cool using your own sweat.

How are you t'day Rod?

"dennis@home" wrote in message
web.com...
On 04/07/2015 23:42, ratsack wrote:


"John Rumm" wrote in message
...
On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which
blows air over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity
and nullifying any benefit of the reduction in temperature!

Not if the air is dry in the first place. That is how evaporative
coolers work, what the yanks call swamp coolers.

Yeah, because it feels like you are in a swamp if you use one.

Not when the air is dry.

If the air is dry then a fan will keep you cool using your own sweat.

Not when its over 40C

On 04/07/2015 21:04, John Rumm wrote:
On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows
air
over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity and
nullifying any benefit of the reduction in temperature!

Obviously need to use dry ice :-)


--
Colin Bignell

On 05/07/2015 15:32, Nightjar "cpb"@ wrote:
On 04/07/2015 21:04, John Rumm wrote:
On 04/07/2015 16:06, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows
air
over a block of ice to produce cooler air.

Thus evaporating more moisture into the air, increasing the humidity and
nullifying any benefit of the reduction in temperature!

Obviously need to use dry ice :-)


AAAARGH! Causes Global Warming!

On Sat, 04 Jul 2015 10:55:45 -0700, spuorgelgoog wrote:

On Saturday, 4 July 2015 16:06:45 UTC+1, David wrote:
You do, of course, have to have enough freezer space to produce the ice

which will remove heat from the inside of the freezer and pass it back
into the room ...

Owain

If you run the freezer at nigh (if it is cool enough) then run the cooler
during the day that might work, but as pointed out already freezers do not
have comparable cooling power to aircon units.

Thought it sounded like bull****.

Unless, as I said, you buy in bags of ice from a commercial freezer.

--
Windows 8.1 on PCSpecialist box

On Sun, 5 Jul 2015 11:25:02 +0100 Dennis@home wrote :
Not if the air is dry in the first place. That is how evaporative
coolers work,
what the yanks call swamp coolers.

Yeah, because it feels like you are in a swamp if you use one.
If the air is dry then a fan will keep you cool using your own sweat.

Had one here and it worked fine - but in Melbourne very hot tends to go
with low humidity. Would be different in tropical Queensland. Swapped
it for split system aircon, used mainly as a source of cheap heating.

--
Tony Bryer, Greentram: 'Software to build on',
Melbourne, Australia www.greentram.com

On Saturday, 4 July 2015 16:06:45 UTC+1, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

interesting I was thinking of getting this at the weekend.

http://www.maplin.co.uk/p/portable-a...d-heater-a75tb

In article ,
whisky-dave writes:
On Saturday, 4 July 2015 16:06:45 UTC+1, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

interesting I was thinking of getting this at the weekend.

http://www.maplin.co.uk/p/portable-a...d-heater-a75tb

That sort of cooler doesn't work in the UK. OK, it will cool down,
but it raises the humidity in the process, which means it won't
*feel* any cooler at all (i.e. wet bulb temperatature will stay
the same, or even increase). It would work best just used as a fan
without any water in it. You can buy a fan for less than 1/10th
of the price.

These sorts of coolers (often called swamp coolers) work in hot dry
countries.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On Monday, 6 July 2015 18:55:09 UTC+1, Andrew Gabriel wrote:
In article ,
whisky-dave writes:
On Saturday, 4 July 2015 16:06:45 UTC+1, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

interesting I was thinking of getting this at the weekend.

http://www.maplin.co.uk/p/portable-a...d-heater-a75tb

That sort of cooler doesn't work in the UK. OK, it will cool down,

well the last one I had from them seemed to work for nearly 3 years.
and it was the ex demo model they were using in the shop at the time I went in they had to go find the box.

but it raises the humidity in the process, which means it won't
*feel* any cooler at all

it definiotaly felt cooler to me.

(i.e. wet bulb temperatature will stay
the same, or even increase). It would work best just used as a fan
without any water in it. You can buy a fan for less than 1/10th
of the price.

I tried that and it didn't work very well.


These sorts of coolers (often called swamp coolers) work in hot dry
countries.

it was pretty hot and dry in my frontroom in London.

On Tuesday, 7 July 2015 11:03:36 UTC+1, whisky-dave wrote:
On Monday, 6 July 2015 18:55:09 UTC+1, Andrew Gabriel wrote:
In article ,
whisky-dave writes:
On Saturday, 4 July 2015 16:06:45 UTC+1, David wrote:
http://www.dailymail.co.uk/femail/ar...at-budget-DIY-
expert-reveals-create-homemade-solar-powered-air-conditioner-just-FIVE-
MINUTES-using-bucket-fan.html

Basically a plastic bucket with a fan grafted into the top which blows air
over a block of ice to produce cooler air.

interesting I was thinking of getting this at the weekend.

http://www.maplin.co.uk/p/portable-a...d-heater-a75tb

That sort of cooler doesn't work in the UK. OK, it will cool down,

well the last one I had from them seemed to work for nearly 3 years.
and it was the ex demo model they were using in the shop at the time I went in they had to go find the box.

but it raises the humidity in the process, which means it won't
*feel* any cooler at all

it definiotaly felt cooler to me.

(i.e. wet bulb temperatature will stay
the same, or even increase). It would work best just used as a fan
without any water in it. You can buy a fan for less than 1/10th
of the price.

I tried that and it didn't work very well.


These sorts of coolers (often called swamp coolers) work in hot dry
countries.

it was pretty hot and dry in my frontroom in London.

I experienced one at one venue, and it did produce moderate cooling, both in centigrade and feeling. It certainly doesn't have anything like the effect of ac though.

You can always split the evaporation and cool air streams to get cooled dry air. Presumably it means a diy job.


NT