Controlling superheat in a refrigeration system

Details Controlling superheat in a refrigeration system Controlling superheat in a refrigeration system

1988-03-14

1989-06-06

Wayner, William E.

Refrigeration

Processes

Compressing, condensing and evaporating

62204, 62225, 622283, F25B 4104

Patent

active

048359769

ABSTRACT:
A vapor compression refrigeration system is which a self heated thermistor is located in the suction line downstream of the evaporator to directly sense the quality of the refrigerant flowing thereover. Appropriate circuitry measures the voltage drop across the thermistor and this drop is used to vary the duty cycle of the system's expansion valve thereby controlling the superheat of the evaporator.

REFERENCES:
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patent: 3735603 (1973-05-01), Hamilton
patent: 4395886 (1983-08-01), Mayer
patent: 4459819 (1984-07-01), Hargraves
patent: 4474022 (1984-10-01), Puskar
patent: 4478051 (1984-10-01), Ibrahim
patent: 4499739 (1985-02-01), Matsuoka et al.
patent: 4506518 (1985-03-01), Yoshikawa et al.
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patent: 4548047 (1985-10-01), Hayashi et al.
patent: 4571951 (1986-02-01), Szymaszek

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