Invention Grant
- Patent Title: Heat pump water heater
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Application No.: US14844295Application Date: 2015-09-03
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Publication No.: US09644850B2Publication Date: 2017-05-09
- Inventor: Young I. Cho
- Applicant: Young I. Cho
- Applicant Address: US PA Philadelphia
- Assignee: Drexel University
- Current Assignee: Drexel University
- Current Assignee Address: US PA Philadelphia
- Agency: Mendelsohn Dunleavy, P.C.
- Main IPC: F24D17/00
- IPC: F24D17/00 ; F22B1/28 ; F24H4/04 ; F24H9/20 ; F24D17/02 ; F25B27/00 ; F25D21/08

Abstract:
An energy efficient heat pump system capable of operating in extreme low and high temperature environments. The heat pump system includes an evaporator, a heater operatively associated with the evaporator, compressor and condenser. In an exemplary embodiment, the heat pump system may further include a plasma pulse-spark system to facilitate removal of scale deposits. The heater heats an environmental medium prior to the environmental medium exchanging energy with a refrigerant located in an evaporator coil of the evaporator in order to maintain a predetermined minimum temperature differential between the environmental medium when it contacts the evaporator coil and the refrigerant when located in the evaporator coil. The system allows efficient operation at low temperatures.
Public/Granted literature
- US20150377496A1 Heat Pump Water Heater Public/Granted day:2015-12-31
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