Frostless heat pump having thermal expansion valves
Abstract
A heat pump system having an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant and further having a compressor, an interior heat exchanger, an exterior heat exchanger, a heat pump reversing valve, an accumulator, a thermal expansion valve having a remote sensing bulb disposed in heat transferable contact with the refrigerant piping section between said accumulator and said reversing valve, an outdoor temperature sensor, and a first means for heating said remote sensing bulb in response to said outdoor temperature sensor thereby opening said thermal expansion valve to raise suction pressure in order to mitigate defrosting of said exterior heat exchanger wherein said heat pump continues to operate in a heating mode.
- Inventors:
-
- Knoxville, TN
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 874816
- Patent Number(s):
- 6467284
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- frostless; heat; pump; thermal; expansion; valves; operable; relationship; transferring; exterior; atmosphere; interior; via; fluid; refrigerant; compressor; exchanger; reversing; valve; accumulator; remote; sensing; bulb; disposed; transferable; contact; piping; section; outdoor; temperature; sensor; means; heating; response; raise; suction; pressure; mitigate; defrosting; continues; operate; mode; heat exchanger; heat transfer; thermal expansion; heat pump; transferring heat; /62/
Citation Formats
Chen, Fang C, and Mei, Viung C. Frostless heat pump having thermal expansion valves. United States: N. p., 2002.
Web.
Chen, Fang C, & Mei, Viung C. Frostless heat pump having thermal expansion valves. United States.
Chen, Fang C, and Mei, Viung C. Tue .
"Frostless heat pump having thermal expansion valves". United States. https://www.osti.gov/servlets/purl/874816.
@article{osti_874816,
title = {Frostless heat pump having thermal expansion valves},
author = {Chen, Fang C and Mei, Viung C},
abstractNote = {A heat pump system having an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant and further having a compressor, an interior heat exchanger, an exterior heat exchanger, a heat pump reversing valve, an accumulator, a thermal expansion valve having a remote sensing bulb disposed in heat transferable contact with the refrigerant piping section between said accumulator and said reversing valve, an outdoor temperature sensor, and a first means for heating said remote sensing bulb in response to said outdoor temperature sensor thereby opening said thermal expansion valve to raise suction pressure in order to mitigate defrosting of said exterior heat exchanger wherein said heat pump continues to operate in a heating mode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {10}
}