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A general control algorithm for cooling towers in cooling plants with electric and/or gas-driven chillers

为在与电或气体驱动的 Chillers 使工厂凉下来的冷却塔的一个一般控制算法

作     者:Braun, James E. 

作者机构:Purdue Univ Ray W Herrick Labs W Lafayette IN 47907 USA 

出 版 物:《HVAC&R RESEARCH》 (国际供暖、通风、空调、制冷研究杂志)

年 卷 期:2007年第13卷第4期

页      面:581-598页

核心收录:

学科分类:08[工学] 0807[工学-动力工程及工程热物理] 081404[工学-供热、供燃气、通风及空调工程] 0802[工学-机械工程] 0814[工学-土木工程] 

基  金:American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE, (RP-1200) American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE 

主  题:GAS DRIVE control strategy algorithms Control Methods COOLING EQUIPMENT CHILLER Water cooling towers Manufacturing costs Computer algorithms Bulb (plant) Electricity 

摘      要:A hybrid chiller plant employs a combination of chillers that are powered by electricity and natural gas. This paper presents an algorithm for determining cooling tower fan settings in hybrid plants in response to loadings on individual chillers. Parameters of the algorithm are evaluated using design information for the chillers and cooling tower fans. In addition to reducing operating costs, use of the open-loop control strategy simplifies the control and improves the stability of the tower control compared with the use of a constant condenser water supply or approach to wet-bulb. Simulated plant cooling costs associated with the algorithm were compared with costs for optimized settings and were within 1% of the minimum costs. The control method is general, in the sense that it also applies to cooling plants that have all electric or all natural gas chillers.

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