Liquid over-feeding refrigeration system and method with integrated accumulator-expander-heat exchanger
Abstract
A refrigeration system is described having a vapor compression cycle utilizing a liquid over-feeding operation with an integrated accumulator-expander-heat exchanger. Hot, high-pressure liquid refrigerant from the condenser passes through one or more lengths of capillary tubing substantially immersed in a pool liquid refrigerant in the accumulator-expander-heat exchanger for simultaneously sub-cooling and expanding the liquid refrigerant while vaporizing liquid refrigerant from the pool for the return thereof to the compressor as saturated vapor. The sub-cooling of the expanded liquid provides for the flow of liquid refrigerant into the evaporator for liquid over-feeding the evaporator and thereby increasing the efficiency of the evaporation cycle. 4 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 504945
- Patent Number(s):
- 5622055
- Application Number:
- PAN: 8-408,248
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 22 Apr 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; REFRIGERATING MACHINERY; AIR CONDITIONERS; VAPOR COMPRESSION REFRIGERATION CYCLE; REFRIGERANTS; TANKS; HEAT EXCHANGERS; OPERATION; DESIGN; SUBCOOLING; ENERGY EFFICIENCY
Citation Formats
Mei, V C, and Chen, F C. Liquid over-feeding refrigeration system and method with integrated accumulator-expander-heat exchanger. United States: N. p., 1997.
Web.
Mei, V C, & Chen, F C. Liquid over-feeding refrigeration system and method with integrated accumulator-expander-heat exchanger. United States.
Mei, V C, and Chen, F C. Tue .
"Liquid over-feeding refrigeration system and method with integrated accumulator-expander-heat exchanger". United States.
@article{osti_504945,
title = {Liquid over-feeding refrigeration system and method with integrated accumulator-expander-heat exchanger},
author = {Mei, V C and Chen, F C},
abstractNote = {A refrigeration system is described having a vapor compression cycle utilizing a liquid over-feeding operation with an integrated accumulator-expander-heat exchanger. Hot, high-pressure liquid refrigerant from the condenser passes through one or more lengths of capillary tubing substantially immersed in a pool liquid refrigerant in the accumulator-expander-heat exchanger for simultaneously sub-cooling and expanding the liquid refrigerant while vaporizing liquid refrigerant from the pool for the return thereof to the compressor as saturated vapor. The sub-cooling of the expanded liquid provides for the flow of liquid refrigerant into the evaporator for liquid over-feeding the evaporator and thereby increasing the efficiency of the evaporation cycle. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {4}
}