Heating, ventilation, and air conditioning system with primary and secondary heat transfer loops

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United States of America Patent

PATENT NO 11105539
APP PUB NO 20190170405A1
SERIAL NO

15890120

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present disclosure relates to a heating ventilation and air conditioning (HVAC) system. The system includes a primary heat transfer loop configured to be disposed at least partially outside of a building, and the primary heat transfer loop includes a heat exchanger, a compressor configured to compress a refrigerant, where the refrigerant is reactive, a condenser configured to receive and condense the refrigerant, and an expansion device configured to reduce a temperature of the refrigerant. The system further includes a secondary heat transfer loop configured to circulate a two-phase fluid at least partially inside the building, wherein the two-phase fluid is less reactive than the refrigerant. The secondary heat transfer loop includes the heat exchanger, where the heat exchanger is configured to transfer energy from the two-phase fluid circulating in the secondary heat transfer loop to the refrigerant, and an evaporator configured to evaporate the two-phase fluid by exchanging energy with an air supply stream flowing across the evaporator.

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Patent Owner(s)

Patent OwnerAddress
JOHNSON CONTROLS LIGHT COMMERCIAL IP GMBHNEUHAUSEN AM RHEINFALL

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kester, Douglas A York, US 22 115

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