Method and apparatus for controlling refrigeration systems

Patent · Tue Apr 12 04:00:00 EDT 1988

OSTI ID:5007630

Pao, P Y

A refrigeration system is described comprising: evaporator means including an evaporator coil having first and second ends and having an internal channel for transporting a fluid through the coil from the first end to the second end; first valve means for controlling the flow of fluid into the evaporator coil at the first end thereof; second valve means for controlling the flow of fluid out of the evaporator coil at the second end thereof; fan means for circulating air through the evaporator means in heat exchange relation therewith; suction means connected to the second valve means, the suction means operable to remove the fluid from the evaporator coil; means for providing a supply of liquid refrigerant to the first valve means; means for providing a supply of hot gas to the first valve means; first sensor means for measuring the drop in air pressure as the air is transported across the evaporator coil; second sensor means for measuring the ambient temperature in a cold storage compartment; and control means responsive to the output of the first and second sensor means.

• Assignee: NOV; NOV-88-013323; EDB-88-113620
• Patent Number(s): US 4736594
• OSTI ID: 5007630
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
CONTROL EQUIPMENT
CONTROL SYSTEMS
COOLING
DESIGN
EQUIPMENT
EVAPORATORS
FLOW REGULATORS
FLUID FLOW
FLUIDS
GAS FLOW
LIQUID FLOW
OPERATION
REFRIGERANTS
REFRIGERATION
REFRIGERATORS
VALVES
VAPOR COMPRESSION REFRIGERATION CYCLE
WORKING FLUIDS