Heat Pump Basics: How Do They Work?

  • Context: High School 
  • Thread starter Thread starter Luke77
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    Heat Pumps Work
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SUMMARY

Heat pumps operate by recirculating refrigerant, which is compressed and expanded to transfer heat. The compressor increases the refrigerant's temperature, allowing it to release heat to the target area. After transferring heat, the refrigerant cools down and is reheated as it cycles back to the compressor. Users transitioning from R-22 systems to R-410A systems should consider brand recommendations for optimal performance.

PREREQUISITES
  • Understanding of heat transfer principles
  • Familiarity with refrigerants, specifically R-22 and R-410A
  • Basic knowledge of HVAC systems and components
  • Awareness of compressor functionality in heat pumps
NEXT STEPS
  • Research the differences between R-22 and R-410A refrigerants
  • Learn about the operation and maintenance of heat pumps
  • Explore various heat pump brands and their performance reviews
  • Study the thermodynamic cycle of heat pumps in detail
USEFUL FOR

Homeowners considering heat pump installation, HVAC technicians, and anyone interested in understanding the mechanics of heat pumps and refrigerant systems.

Luke77
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Hey, I know this is pretty random, but I have a few questions about heat pumps. Does the refrigerant run out or is it circulated over and over again? Also, how does the compressor play into it? I know this is a simple question that will get simple answers, but if anyone knows anything, leave a post.
 
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The refrigerant is recirculated.
The compressor compresses the refrigerant, making hotter - in particular, hotter than the place you're pumping heat to. Having passed some of it's heat to the target, it's a bit cooler (but still warmer than the target). It's now allowed to expand. That makes it colder than it was before it was compressed. It now goes past the heat source, which warms it up a bit. And round it goes again.
 
Depends on whose system you are talking about. The R-22 in my old system just "ran out" last week and I have to replace the whole lot with a new R-410a based system ($$). Anyone here have a favorite brand?
 

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