Refrigeration – Processes – Employing diverse materials or particular material in...
Patent
1991-05-02
1993-03-02
Makay, Albert J.
Refrigeration
Processes
Employing diverse materials or particular material in...
623242, 62332, 252 67, 16510413, F25B 4700, C09K 504
Patent
active
051898845
ABSTRACT:
A two-stage air-to-air heat pump comprises two passageways between the outside and inside of a building with a passive heat pump first stage and an active heat pump second stage. One end of the heat pump is disposed in one of the passageways and the other end in the other passageway and the pipe is tilted so one end is higher than the other. Similarly, one coil of the active heat pump is disposed in one passageway and the other coil is disposed in the other passageway. Air from the outside enters through one of the passageways, passes over one end of the heat pipe and then one of the coils into the inside. Air from the inside passes over the other end of the heat pipe and then the other coil to the outside. By choosing which end of the heat pipe is the higher end and the direction of the compressor, this two stage heat pump may either heat or cool air entering the enclosure. The passive heat pump has a core of heat pipes partially filled with a non-azeotropic refrigerant mixture of 70 parts R22 to 30 parts R152a.
REFERENCES:
patent: 3789621 (1974-02-01), Inuzuka
patent: 4303536 (1981-12-01), Orfeo et al.
patent: 4679403 (1987-07-01), Yoshida et al.
patent: 4680939 (1987-07-01), Rojey et al.
patent: 4688399 (1987-08-01), Reimann
patent: 4938035 (1990-07-01), Dinh
NRC 25463 "A Comparison of Ventilation Strategies for R-2000 Houses" J. W. Linton 1986 National Research Council Canada.
NRC No., 27719 "Design, Construction, and Testing of an Exhaust air heat Pump for R-2000 Houses" J. W. Linton 1987 National Research Council Canada.
"Heat Pumps in Cold Climates" Proceedings Aug. 13-14, 1990 Caneta Research Inc.
Doerrler William C.
Makay Albert J.
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