System for monitoring the operation of an evaporator unit

Details System for monitoring the operation of an evaporator unit System for monitoring the operation of an evaporator unit

1995-04-21

1997-10-14

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

62125, 62129, 165 111, 340584, 340606, 340675, G08B 2100

Patent

active

056776772

ABSTRACT:
The difference between the temperature of a heat exchange medium leaving the evaporator unit of a chiller and the temperature of the refrigerant in the evaporator unit is monitored relative to a real time alarm limit for this temperature difference. The real time alarm limit is computed from time to time by a microprocessor. The value of the computed alarm limit will vary with the cooling load being experienced by the chiller's evaporator unit.

REFERENCES:
patent: 5009076 (1991-04-01), Winslow
patent: 5152152 (1992-10-01), Brickner et al.
patent: 5351500 (1994-10-01), Morrow
patent: 5457965 (1995-10-01), Blair et al.

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