Strange Ways To Make Cold

Making stuff cool and keeping it that way has been a pretty essential part of human civilization for thousands of years, with only in the past few hundred years man-made methods having become avail…

Hackaday
Testing Refrigerants And Capillary Tubes To Find Peak Performance

Although vapor-compression refrigeration is a simple concept, there are still a lot of details in the implementation of such a system that determines exactly how efficient it is. After making a few…

Hackaday
Last night I spotted this little gas canister at the top of our stairs, refrigerant for some of our chillers or heat pumps on the roof. 21 kg of R-410a. Read the label: 44 tonnes of CO2e . One false move by an installer, or slow leaks and it’s released - the equivalent of 30 return trips to Vancouver in a canister that barely reaches my knee.
We have natural refrigerants like CO2 and propane. Time to choose/switch!! #GWP #climatechange #refrigerant

Grain-sized cooling tech cuts energy use by 70%, doubles efficiency…

Globally, cooling requirements are met through compressor-based systems, where a #refrigerant is pumped through a series of coils to transfer heat. While effective, these systems are bulky, energy-intensive, and use chemicals that harm the environment... #airconditioning #engineering

https://formuchdeliberation.wordpress.com/2025/05/21/grain-sized-cooling-tech-cuts-energy-use-by-70-doubles-efficiency-2/

Grain-sized cooling tech cuts energy use by 70%, doubles efficiency…

Globally, cooling requirements are met through compressor-based systems, where a #refrigerant is pumped through a series of coils to transfer heat. While effective, these systems are bulky, energy-…

for much deliberation
Inside The Heart Of The Magnetocaloric Heat Pump - CleanTechnica

Researchers at Ames National Laboratory are have reportedly cracked the code for refrigerant-free magnetocaloric heat pump of the future.

CleanTechnica
Inside The Heart Of The Magnetocaloric Heat Pump - CleanTechnica

Researchers at Ames National Laboratory are have reportedly cracked the code for refrigerant-free magnetocaloric heat pump of the future.

CleanTechnica

1st heat pump clothes dryer contender: the Whirlpool WHD560CHW.

Pros:

- 7.4 cu. ft. capacity, most heat pump dryers are smaller around 4 ft^3
- My parents bought one on my recommendation and like it

Cons:

- 240V
- I can't find what refrigerant it uses, so it's probably awful

https://www.whirlpool.com/laundry/dryers/electric/p.7.4-cu.ft-front-load-heat-pump-dryer-with-intiutitive-touch-controls,-advanced-moisture-sensing.whd560chw.html

#ClothesDryers #refrigerant

Cooling system could replace air con and drastically cut energy use

A heat-pump-like system that relies on a phenomenon called electrocaloric cooling could heat or chill a room almost twice as efficiently as standard air-conditioning units

New Scientist