Chiller system with low capacity controller and method of operating same

a controller and low-capacity technology, applied in the field of chilling water systems, can solve the problems of low capacity demand, lower kilowatt-per-ton use, and less efficient operation of chillers, and achieve the effect of low capacity, low capacity, and low cos
US20060010893A1Inactive Publication Date: 2006-01-19AIR MATRIX MANAGEMENT
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
AIR MATRIX MANAGEMENT
Publication Date
2006-01-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method (126) and a low capacity controller (28) enable a chiller system (20) to operate below a minimum allowable capacity. The chiller system (20) includes a chiller (40) and a chiller fluid loop (30), having a supply line (36) for conveying a chiller fluid (34) from the chiller (40) and a return line (38) for returning the chiller fluid (34) to the chiller (40). A capacity demand for the chiller (40) is determined. When the capacity demand is less than a minimum allowable capacity of the chiller (40), the chiller fluid (34) is routed from the return line (38) to a heat exchanger (96) of the low capacity controller (28) where the chiller fluid (34) is warmed and returned to the return line (38). The warmed chiller fluid (34) establishes a false capacity demand, detectable at the chiller (40), that is at least the minimum allowable capacity.
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Description

TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to the field of chilled water systems. More specifically, the present invention relates to a method of operating a chilled water system. BACKGROUND OF THE INVENTION

[0002] Chiller systems provide a temperature conditioned fluid, for use in conditioning the air within large buildings and other facilities. The chilled fluid is typically pumped to a number of remote heat-exchangers or system coils for cooling various rooms or areas within a building. A chiller system enables the centralization of the air conditioning requirements for a large building or complex of buildings by using water or a similar fluid as a safe and inexpensive temperature transport medium.

[0003] In general, a chiller of the chiller system provides chilled water of a particular temperature, via a first fluid loop, for cooling air in a building. Heat is extracted from the building air, transferred to the fluid in the first fluid loop, and is ret...

Claims

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