Heat exchange – With alarm – indicator – signal – register – recorder – test or... – Remotely controlled inspection means
Patent
1981-01-12
1983-04-12
Makay, Albert J.
Heat exchange
With alarm, indicator, signal, register, recorder, test or...
Remotely controlled inspection means
62180, 236 49, 236 1EA, F25B 2900, F24F 700
Patent
active
043794840
ABSTRACT:
A solid-state control for a variable air volume (VAV) temperature conditioning system adapted to control a plurality of refrigerant cooling stages, and in particular, to modulate an outdoor air economizer. The control includes both an outdoor ambient air and a discharge air temperature sensor. Further included are means for selectively modulating the economizer either in response to the deviation of the discharge air temperature from a setpoint or in response to the discharge air temperature, depending upon the relative magnitudes of the outdoor and discharge air temperature, and upon one or more stages of cooling being energized.
REFERENCES:
patent: 2217680 (1940-10-01), Haines
patent: 3677335 (1972-07-01), Weatherston
patent: 3949807 (1976-04-01), Tyler
patent: 4013118 (1977-03-01), Zimmer et al.
patent: 4122893 (1978-10-01), Thompson
patent: 4293027 (1981-10-01), Tepe et al.
Klouda John F.
Lom Duane L.
Anderson Ronald M.
Lewis Carl M.
Makay Albert J.
Tanner Harry
The Trane Company
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