Chillers are reference technologies to meet the demand for space cooling in the tertiary and commercial sectors. Meantime, being power-to-cold technologies, they could increase the flexibility of these buildings in those contexts of a high share of electricity from renewable energy sources through new control strategies. To reliably assess the achievable energy savings in these novel applications, models capable of simulating not only the steady-state operation but also the dynamic response are required. However, the operation of these systems is usually evaluated through highly simplified models, also omitting controls. To fill this gap, this paper proposes an integrated thermodynamic and control modeling for an air-cooled chiller, accounting for usual and innovative control strategies. To show the capabilities of the model, an air-cooled chiller serving an office in the Mediterranean area is assumed. Both a variable-speed chiller and a constant-speed chiller with sequential control for compressors are simulated. Results show that for a variable-speed chiller, the set point for the supplied cold water is met, and the thermal inertia of the hydronic loop affects the reaching of the steady-state operation. In the case of a constant-speed chiller with sequential control, the number of “ON-OFF” cycles for each compressor is monitored and the minimum inertia of the hydronic loop for the safe operation of compressors is found. The analysis reveals that a variable temperature setpoint for the supplied water allows for a percentage increase in the energy performance between 10.8% and 60.3%. The proposed model enables the analysis of innovative controls aimed at improving energy savings and increasing building flexibility.

冷却器是满足第三产业和商业部门对空间冷却需求的参考技术。同时，作为从电到冷的技术，它们可以通过新的控制策略在可再生能源电力占比高的情况下提高这些建筑物的灵活性。为了可靠地评估这些新应用中可实现的节能效果，需要能够模拟稳态运行和动态响应的模型。然而，这些系统的操作通常通过高度简化的模型进行评估，同时也省略了控制。为了填补这一空白，本文提出了一种用于风冷式冷水机组的集成热力学和控制模型，并考虑了常用和创新的控制策略。为了展示模型的能力，假设一台风冷冷水机服务于地中海地区的办公室。对压缩机进行顺序控制的变速冷水机组和恒速冷水机组进行了模拟。结果表明，对于变速冷水机，满足供应冷水的设定点，循环回路的热惯性影响稳态运行的达到。对于采用顺序控制的恒速冷水机，监控每台压缩机的“开-关”循环次数，并找到用于压缩机安全运行的循环循环的最小惯量。分析表明，供水的可变温度设定点可使能源性能百分比提高 10.8% 至 60.3%。