Heat pump system with selective space cooling

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:870946

Pendergrass, Joseph C ^[1]

---

1. Gainesville, GA

A reversible heat pump provides multiple heating and cooling modes and includes a compressor, an evaporator and heat exchanger all interconnected and charged with refrigerant fluid. The heat exchanger includes tanks connected in series to the water supply and a condenser feed line with heat transfer sections connected in counterflow relationship. The heat pump has an accumulator and suction line for the refrigerant fluid upstream of the compressor. Sub-cool transfer tubes associated with the accumulator/suction line reclaim a portion of the heat from the heat exchanger. A reversing valve switches between heating/cooling modes. A first bypass is operative to direct the refrigerant fluid around the sub-cool transfer tubes in the space cooling only mode and during which an expansion valve is utilized upstream of the evaporator/indoor coil. A second bypass is provided around the expansion valve. A programmable microprocessor activates the first bypass in the cooling only mode and deactivates the second bypass, and vice-versa in the multiple heating modes for said heat exchanger. In the heating modes, the evaporator may include an auxiliary outdoor coil for direct supplemental heat dissipation into ambient air. In the multiple heating modes, the condensed refrigerant fluid is regulated by a flow control valve.

• Research Organization: Wallace Energy Systems
• DOE Contract Number: FG44-92R410601
• Assignee: Wallace Heating & Air Conditioning, Inc. (Gainesville, GA)
• Patent Number(s): US 5628200
• OSTI ID: 870946
• Country of Publication: United States
• Language: English

Related Subjects

heat
pump
selective
space
cooling
reversible
provides
multiple
heating
modes
compressor
evaporator
exchanger
interconnected
charged
refrigerant
fluid
tanks
connected
series
water
supply
condenser
feed
line
transfer
sections
counterflow
relationship
accumulator
suction
upstream
sub-cool
tubes
associated
reclaim
portion
reversing
valve
switches
bypass
operative
direct
mode
expansion
utilized
indoor
coil
provided
programmable
microprocessor
activates
deactivates
vice-versa
auxiliary
outdoor
supplemental
dissipation
ambient
air
condensed
regulated
flow
control
feed line
transfer tubes
ambient air
flow control
heat pump
heat exchange
heat exchanger
heat transfer
control valve
water supply
heat dissipation
refrigerant fluid
flow relationship
multiple heating
reversing valve
provides multiple
reversible heat
pump provides
supplemental heat
heating mode
ounterflow relationship
transfer tube
/62/