Failure diagnosing system for absorption chillers

Details Failure diagnosing system for absorption chillers Failure diagnosing system for absorption chillers

1995-02-22

1997-04-22

Voeltz, Emanuel T.

Boots, shoes, and leggings

364505, 364185, 364186, 36455101, 62107, 62108, 62109, 62101, F25B 4904

Patent

active

056234260

ABSTRACT:
A failure diagnosing system for an absorption chiller including an evaporator, absorber, etc. comprises a plurality of sensors for measuring at least one representative temperatures of each of two fluids participating in heat exchange in a specified heat exchange unit, and an arithmetic unit for receiving measurement data from the sensors. The arithmetic unit comprises a circuit for calculating an actual temperature difference using a simple calculation equation defined by a linear expression, a circuit for calculating the amount of heat exchange by the absorber, and a circuit for calculating the degree of abnormality of the absorber by comparing the actual temperature difference with an ideal temperature difference for the same amount of heat exchange as the calculated amount.

REFERENCES:
patent: 4381549 (1983-04-01), Stamp, Jr. et al.
patent: 4660386 (1987-04-01), Hansen et al.
patent: 5083438 (1992-01-01), McMuliin
patent: 5174364 (1992-12-01), Mizuno
patent: 5301743 (1994-04-01), Mizuno

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