Refrigeration – With indicator or tester – Condition sensing
Patent
1991-03-01
1992-01-28
Tanner, Harry B.
Refrigeration
With indicator or tester
Condition sensing
62127, 36455101, 374 40, 165 111, G01K 1300
Patent
active
050834380
ABSTRACT:
A method and apparatus for measuring and monitoring critical parameters of a chiller, such as the chiller efficiency. Specifically, temperature and pressure sensors are disposed in the inlet and outlet lines of a condenser and chiller unit. A sensor is also placed on the compressor motor for determining the amount of power being expended by the motor. The actual flow rate of the chilled water entering and leaving the chiller unit is calculated based upon the sensor inputs. The actual kilowatts per unit ton rating for the evaporator is determined. The design kilowatts per unit ton rating for the evaporator is corrected to take into account any variation between the actual motor voltage and design motor voltage, and the total temperature deviation. The chiller efficiency is then calculated based on these two kilowatt per ton ratings.
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HVC Daly, "Find Out How Much Extra You're Going to Pay to Keep Cool This Summer", (Company Brochure), May 22, 1989.
HVC Daly, "Keep Down the Cost of Keeping Cool", (Company Brochure), May 22, 1989.
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