Chiller capacity control with variable chilled water flow compen

Details Chiller capacity control with variable chilled water flow compen Chiller capacity control with variable chilled water flow compen

1999-02-05

2000-07-11

Bennett, Henry

Refrigeration

Automatic control

Of external fluid or means

62177, 62180, 62201, 62203, 622284, F25D 1700

Patent

active

060855320

ABSTRACT:
A method of controlling chiller capacity in a chiller system. The method comprises the steps of: measuring entering the fluid temperature of a fluid entering a heat exchanger; measuring the fluid temperature of the fluid leaving the heat exchanger; determining a desired leaving fluid temperature; establishing chiller capacity as a function of the difference between leaving fluid temperature and the desired leaving fluid temperature; and adjusting the determined chiller capacity as a function of the difference between entering fluid temperature and the desired leaving fluid temperature.

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"Why Must Chillers Be Constant Flow Devices?", Jan.-Feb., 1980, vol. 9, No. 1, Trane Engineer's Newsletter.
"Don't Ignore Variable Flow", by James P. Waltz, Jul. 1997, Contracting Business.

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