## How Do Heat Pumps Work

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.
 PhysOrg.com physics news on PhysOrg.com >> Cheap, color, holographic video: Better holographic video displays>> First entanglement between light and optical atomic coherence>> EUROnu project recommends building Neutrino Factory
 Recognitions: Homework Help Science Advisor 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?

Recognitions:
Gold Member

## How Do Heat Pumps Work

This should tell you everything you want to know: http://en.wikipedia.org/wiki/Heat_pump

 Similar discussions for: How Do Heat Pumps Work Thread Forum Replies Advanced Physics Homework 0 Classical Physics 5 Mechanical Engineering 4 Introductory Physics Homework 10 General Engineering 3