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Title: Thermosyphon coil arrangement for heat pump outdoor unit

Abstract

For a heat pump, the outdoor unit is provided with a coil and a refrigerant flow arrangement therefor which is such that in the heating mode of operation of the heat pump they operate in a thermosyphon fashion. The coil 32 has a feed portion 30 and an exit portion 34 leading to a separator drum 36 from which liquid refrigerant is returned through downcomer line 42 for recirculation to the feed portion. The coil is tilted upwardly from entry to exit by the angle alpha to enhance the clearance of the two phases of refrigerant from each other in the heating mode of operation. There is no thermosyphon function in the cooling mode of operation.

Inventors:
 [1]
  1. (Churchill, PA)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
865013
Patent Number(s):
4449377
Assignee:
Westinghouse Electric Corp. (Pittsburgh, PA) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
thermosyphon; coil; arrangement; heat; pump; outdoor; unit; provided; refrigerant; flow; heating; mode; operation; operate; fashion; 32; feed; portion; 30; exit; 34; leading; separator; drum; 36; liquid; returned; downcomer; line; 42; recirculation; tilted; upwardly; entry; angle; alpha; enhance; clearance; phases; function; cooling; heat pump; liquid refrigerant; coil arrangement; outdoor unit; refrigerant flow; heating mode; /62/

Citation Formats

Draper, Robert. Thermosyphon coil arrangement for heat pump outdoor unit. United States: N. p., 1984. Web.
Draper, Robert. Thermosyphon coil arrangement for heat pump outdoor unit. United States.
Draper, Robert. Sun . "Thermosyphon coil arrangement for heat pump outdoor unit". United States. https://www.osti.gov/servlets/purl/865013.
@article{osti_865013,
title = {Thermosyphon coil arrangement for heat pump outdoor unit},
author = {Draper, Robert},
abstractNote = {For a heat pump, the outdoor unit is provided with a coil and a refrigerant flow arrangement therefor which is such that in the heating mode of operation of the heat pump they operate in a thermosyphon fashion. The coil 32 has a feed portion 30 and an exit portion 34 leading to a separator drum 36 from which liquid refrigerant is returned through downcomer line 42 for recirculation to the feed portion. The coil is tilted upwardly from entry to exit by the angle alpha to enhance the clearance of the two phases of refrigerant from each other in the heating mode of operation. There is no thermosyphon function in the cooling mode of operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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