International. A recent report prepared for the U.S. Department of Energy by Navigant Consulting identified and evaluated 17 technologies that could potentially replace traditional vapor compression technology in residential and commercial HVAC applications.
While twenty-two technology options were considered, only standalone technologies were evaluated rather than those that are components of space-conditioned systems.
1.Thermoelastic
2.Membrane heat pump
3.A/C liquid evaporative desiccant
4.Magnetocaloric
5.Vuilleumier Heat Pump
6.Evaporative cooling
7.Thermoelectric
8.Ground-coupled solid A/C desiccant
9.Absorption heat pump
10.Duplex-Stirling heat pump
11.Thermoacoustic
12.Adsorption heat pump
13.Thermotunnelling
14.A/C stand-alone solid desiccant
15.A/C stand-alone liquid desiccant
16.Heat pump by ejector
17.Brayton Heat Pump
