Patent ID: 8660704
Filing Date: 2014-02-25
Classification: F24F

Abstract:
1. A method for operating one or more pumps of a chilled water plant comprising: pumping water at a first flow rate through a chiller with a first pump; adjusting the first flow rate to maintain a first Delta T across the chiller, wherein the first Delta T comprises a chiller entering temperature and a chiller leaving temperature which provides refrigerant superheat at an evaporator of the chiller regardless of chilled water plant load conditions; pumping the water at a second flow rate through an air handler unit with a second pump; and adjusting the second flow rate to maintain a second Delta T across the air handler unit, wherein the second Delta T comprises an air handler unit entering temperature and an air handler unit leaving temperature which provides a desired cooling output at the air handler unit regardless of the chilled water plant load conditions; wherein the first Delta T and the second Delta T comprise values which balance the first flow rate and the second flow rate to reduce bypass mixing at a bypass of the chilled water plant.