Energy evaluation of optimal control strategies for central VWV chiller systems
Energy evaluation of optimal control strategies for central VWV chiller systems
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DOI：
10.1016/j.applthermaleng.2006.08.015
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发表时间：
2007-04
影响因子：
6.4
通讯作者：
Xin-qiao Jin;Zhimin Du;Xiaokun Xiao
中科院分区：
文献类型：
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作者：
Xin-qiao Jin;Zhimin Du;Xiaokun Xiao
在各种工况下，暖通空调（HVAC）系统在大多数运行时段的实际负荷都小于原设计负荷。为了节能和优化制冷系统的控制，分析了变水量系统的性能和控制系统的特点，提出了三种策略，并进行了仿真试验。对这三种策略的能源评价表明，它们都能在一定程度上节约能源，但仍有潜力。为使制冷系统能耗最小化，应同时优化冷冻水供冷温度和二次泵供冷扬程的控制设定值。
Under various conditions, the actual load of the heating, ventilation and air conditioning (HVAC) systems is less than it is originally designed in most operation periods. To save energy and to optimize the controls for chilling systems, the performance of variable water volume (VWV) systems and characteristics of control systems are analyzed, and three strategies are presented and tested based on simulation in this paper. Energy evaluation for the three strategies shows that they can save energy to some extent, and there is potential remained. To minimize the energy consumption of chilling system, the setpoints of controls of supply chilled water temperature and supply head of secondary pump should be optimized simultaneously.