Abstract:

In order to propose a method and strategy of regulating chilled water and air volume through cooling coil at the same time under part load of air-conditioning system，this paper studies the thermal characteristics of cooling coil under variable-volume condition.By creating mathematical model of cooling coil，the authors simulate the influence of variable chilled water volume，variable air volume and both of above on performance of cooling coil under different chilled water temperature and obtain the change regulation of thermal characteristics of cooling coil.Then the change of cooling coil performance in the view of energy-saving，optimization and control of the system is analyzed.The paper presents foundation and reference for variable-volume control strategy of cooling coil under part load of air-conditioning system.

摘要：

为提出一种空调系统部分负荷下表冷器进行冷冻水量和风量同时调节的方法和策略，对表冷器在变流量工况下的热工特性进行了研究，通过建立表冷器的数学模型，进行了不同冷冻水温度下变冷冻水流量、变送风量和冷冻水流量与送风量同时变化对表冷器性能影响的仿真，得出了不同冷冻水温度、变冷冻水流量、变送风量对表冷器的热工性能的影响规律。同时从系统节能优化控制角度对表冷器的热工性能变化进行了分析，为完善空调系统部分负荷下表冷器的变流量控制策略提供依据和参考。