Abstract: The simulation of the air-conditioning system and the optimized control of minimizing the energy consumption under the constraint of temperature are mainly studied. The simulation software HVACSIM+ for air-conditioning systems is introduced. The air handling unit and the rooms of the first floor of one building are taken as the simulation target; a simulation system is set up based on the platform of HVACSIM+. The function describing the relation between the consumption of cooling coil and the chilled water velocity is found and taken as the objective function, and with improved cyclic variable method the controller’s parameters are optimized under MATLAB environment. The HVACSIM+ simulator is run again to calculate the energy consumption supplied by the cooling source. Results show that the system runs steadily while the controller works with the optimal parameters and the energy consumption of the cooling coil is greatly reduced compared with working in non-optimized condition.

Key words: Heating, Ventilation and Air-Conditioning（HVAC） simulation plus other systems, simulator, optimized control, cyclic variable method

摘要： 研究了空调系统的仿真及一定温度要求下的最小能耗优化控制。介绍了大型空调系统仿真软件HVACSIM+；以某大厦一层中央空调系统的空气处理系统以及空调房间为仿真对象，进行HVACSIM+系统仿真；建立了表冷器的能耗与冷冻水流速之间的函数关系，将此作为目标函数，在MATLAB环境下，应用改进的变量轮换法优化控制器参数，经HVACSIM+再次仿真运行，计算冷源向空调系统提供的能耗。仿真结果表明，优化参数下的仿真系统运行稳定，与优化前相比，经表冷器消耗的能量大大减少。

关键词: 暖通空调及其他系统仿真（HVACSIM+）, 仿真器, 优化控制, 变量轮换法