Refrigeration And Air Conditioning Technology Better |work| (FAST · 2024)
Refrigeration and Air Conditioning Technology By Eugene Silberstein World of Books
Carbon dioxide (R-744), propane (R-290), and ammonia (R-717) are recognized for their ultralow Global Warming Potential and zero ozone depletion potential. Propane, with a GWP of just 0.02, boasts excellent thermodynamic properties leading to efficient heat transfer and lower energy consumption. It also contains no PFAS chemicals, which are harmful to the environment, and is relatively inexpensive compared to synthetic alternatives. At the 2025 Green Cooling Summit, experts highlighted that best-performing chiller units already use R-717 (ammonia) and HCFO R-1233zd.
An often-overlooked opportunity is capturing waste heat. Desuperheaters can recover up to 30% of total heat that would otherwise be rejected by the condenser, and this recovered thermal energy can be used for space or water heating. Redirecting thermal energy to other processes can recover 20–30% of wasted thermal energy. refrigeration and air conditioning technology better
Why Modern Refrigeration and Air Conditioning Technology is Better Than Ever
German startup Magnotherm is already building beverage coolers and refrigerators that use magnets instead of chemical refrigerants. Meanwhile, Barocal, a Cambridge University spin-out, has raised $10 million to commercialize refrigerant-gas-free heating and cooling technology based on barocaloric materials—specialized materials that generate significant temperature changes through pressure-driven phase transitions without relying on traditional refrigerant gases. Heating and cooling systems account for approximately 15% of annual global greenhouse gas emissions. As one investor noted, "Barocal has achieved what scientists have struggled to do for decades—a materials breakthrough delivering solid-state materials that finally enable new cooling and heating platform technology that competes with vapor-based incumbents". At the 2025 Green Cooling Summit, experts highlighted
: Modern smart thermostats and controllers, like those from Nest or Ecobee , learn user preferences and adjust performance based on external weather forecasts and indoor occupancy.
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: Newer systems are transitioning to natural refrigerants like R290 (propane) and CO₂ , which have minimal environmental impact compared to older HFCs like R-410A.
Compressors are wrapped in heavy acoustic blankets and mounted on vibration-absorbing grommets, keeping operational noise levels below that of a normal conversation. The Bottom Line