Heat pump system defrost control

Patent · Tue Dec 01 04:00:00 EST 1981

OSTI ID:5484381

Mueller, D A; Serber, S L

A control system for a reverse cycle refrigeration system for controlling the defrosting of the outdoor coil thereof on a cost effective basis; the control system comprising a controller means receiving inputs indicative of the temperature of the outdoor coil, and the operation of the compressor means; the controller means having a timing function which is initiated upon the outdoor coil temperature being at or below a preselected value and the compressor means being operated; the duration of the timing function being determined on a substantially continuous basis as a function of the magnitude of the outdoor coil temperature; and the controller means having an operative connection to the system so as to, upon completion of the timing function, place the reverse cycle refrigeration system into an outdoor coil defrost mode of operation.

• Assignee: Honeywell Inc
• Patent Number(s): US 4302947
• OSTI ID: 5484381
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
BUILDINGS
CONTROL SYSTEMS
COOLING
COOLING SYSTEMS
COST
EFFICIENCY
ENERGY SYSTEMS
HEAT PUMPS
HEATING SYSTEMS
MACHINERY
REFRIGERATING MACHINERY
REFRIGERATION
TEMPERATURE MEASUREMENT