As is conventional air-conditioning.

Hi,

Well, a little more to air conditioning though right?
The condenser comes to mind.

 

Hi,

Well, a little more to air conditioning though right?
The condenser comes to mind.

Yes, but the cooling comes from evaporation. The compressor re-liquefies the coolant and it is recycled, unlike your water vapor cooler.

In Phoenix, many people used evaporative coolers for cooling their houses, which were just a larger version of your sponge and fan.

 

Yes, but the cooling comes from evaporation. The compressor re-liquefies the coolant and it is recycled, unlike your water vapor cooler.

In Phoenix, many people used evaporative coolers for cooling their houses, which were just a larger version of your sponge and fan.

Evaporative coolers work well and are quite economical, but they only work in very dry climate. Unfortunately, my city is dry in the winter, and humid in the summer ... and summers down here are insufferable ... AC easily makes about 70% of my electricity bill during summer

 

Hello,

I am wondering now if anyone here uses a thermoelectric cooler. They use a Peltier device.
Personally, the reviews I have read are mostly negative. The complains include they take too long to cool even a single can of soda, and the temperature differential may not be enough inside to ambient.
I purchased a ready made Peltier device with two heatsinks and two fans, but only tried it out once never got to put it into anything useful.

 

I used one for a while at work to keep drinks and lunch meat so I could make a fresh sandwich each day. Took 12V and 4A, so 48W continuous. Very inefficient.

 

Hello,

I am wondering now if anyone here uses a thermoelectric cooler. They use a Peltier device.
Personally, the reviews I have read are mostly negative. The complains include they take too long to cool even a single can of soda, and the temperature differential may not be enough inside to ambient.
I purchased a ready made Peltier device with two heatsinks and two fans, but only tried it out once never got to put it into anything useful.

They show up in wine coolers (and there are several threads related to repairing them). That and in-vehicle cooling are about the only two niches where you'll find them. They also show up in expensive lab equipment and such but I don't count those. They're terribly inefficient and can't easily reach the same low temperatures we expect from vapor recompression refrigerators. But those have a minimum practical size and would be a poor choice for the niches where the Peltier devices are found.

 

I used one for a while at work to keep drinks and lunch meat so I could make a fresh sandwich each day. Took 12V and 4A, so 48W continuous. Very inefficient.

That's an interesting side issue to consider.
Do you think it kept the drinks and lunch meat cold enough for one or two days meals?

 

That's an interesting side issue to consider.
Do you think it kept the drinks and lunch meat cold enough for one or two days meals?

Oh, yeah. It could keep lunchmeat good for a week. And I cooled two canned sodas for each day, replacing them before leaving for the day.

 

Oh, yeah. It could keep lunchmeat good for a week. And I cooled two canned sodas for each day, replacing them before leaving for the day.

Hi,

Oh that's very interesting. I wish I had one back then when I needed it, it would have been a real blessing.
Quite a bit of power to operate though as you mentioned, that's a shame.

 

Hi,

Oh that's very interesting. I wish I had one back then when I needed it, it would have been a real blessing.
Quite a bit of power to operate though as you mentioned, that's a shame.

Yeah, it blew out two 12V 5A bricks before I made a transformer supply for it. The supply needed a cooling fan.

 

Yeah, it blew out two 12V 5A bricks before I made a transformer supply for it. The supply needed a cooling fan.

Wow that's nasty. That's quite a bit of power too to be running 24/7 constantly. Like having a 60watt incandescent bulb on all the time.

 

I knew good old boys that used propane as a refrigerant long ago.

 

 

Dupe from just above.

Ouch! ... my bad!!!

 

Wow, that's amazing, I can't wait to get propane pumped under all my floors too
The future looks very bright, and flammable

 

Many Refrigerants are Flammable,
but especially the ones that cut into my outrageous profits.
It costs some serious jack to keep 17 politicians happy.
.
.
.

 

Many Refrigerants are Flammable,
but especially the ones that cut into my outrageous profits.
It costs some serious jack to keep 17 politicians happy.
.
.
.

Hi,

They are not all, but yes some are so maybe it's ok to take it from the window air conditioner and instead pump it under every square inch of every floor in the house ... much better
Much better because if there is a fire, the whole house goes and you get more insurance money

I suppose though that if energy is becoming so valuable and we have to conserve more for various reasons, then anything like the heat pumps may be a better option for the future. And as a side benefit, we can always use the fires for roasting marshmallows

Note: Part of this was joking but part was serious.

 

Gee, the oil I use to heat my house isn’t flammable is it? Should I worry?

 

Gee, the oil I use to heat my house isn’t flammable is it? Should I worry?

I am sure it would be, but propane must be more so than liquid oil, right?
Also, you are not pumping it under every square inch of every floor in your house either, right?

I bet you have a gigantic tank though (ha ha).

Maybe it's not as bad as I think, but with so many other ways to die I just hate to add another one
This reminds me of the movie, "A Million Ways To Die In The West" (actually the Old West pre-1900).

I can't seem to stop joking around about this, I guess because it struck me as dangerous yet funny.

 

https://hydrocarbons21.com/ashrae-c...-of-higher-r290-charge-for-heat-pumps-in-u-s/

It will most likely not be until “2025 or later” before an ASHRAE standards committee approves the use of up to 4.9kg (10.9lbs) of flammable (A3) refrigerants like propane (R290) in outdoor (indirect) heat pumps and air conditioners in the U.S., according to the committee’s chair.

“This is not going to be a quick process,” said Jim VerShaw, chair of ASHRAE’s SSPC (Standing Standard Project Committee) 15.2 and Chief Engineer, Residential HVAC for Trane Technologies. SPCC 15.2 oversees ASHRAE’s 15.2-2022 Safety Standard for Refrigeration Systems in Residential Applications. The proposed amendment to increase in the charge limit for A3 and A2 (less flammable) refrigerants falls under “Addendum E.”

https://www.coolingpost.com/uk-news/sales-of-r290-splits-to-diyers-is-irresponsible/

Amongst a range of split systems Appliances Direct offer two Electriq brand inverter controlled wall-mount splits using R290 – a 9,000Btu and 12,000Btu model. The Electriq units are thought to be of Chinese origin.

Amateur
“Selling air conditioning products containing propane to all and sundry online is an accident waiting to happen,” said Fox. “In many amateur installations, connecting nuts are not properly tightened and air in the pipes is not removed because the installer lacks the tools and knowledge to carry out work safely,” he explained.

“The refrigerant used in this product is similar to the gas used to fire up barbeques. If it leaks, it will create a potentially explosive atmosphere and put lives at risk. It is just like taking a bottle of camping gas into your living room and opening a valve.”