本文的主题是一个大型中央设备，带有一台汽轮机驱动的制冷机，其制冷剂压缩机配备变速和可变叶片控制。冷却塔是多单元的，带有单速和双速风扇。该项目的主要目标是找到降低冷水机组总体运行成本的方法。为了研究许多不同的选择，并评估其成本和效益，开发了一个用于TRNSYS的冷却装置的计算机模拟（Klein等人，1983年）。为每个主要设备部件开发了通用计算机模型，具体参数通过系统测量确定。所研究的控制和设备改造包括替代风扇转速和塔室顺序、不同的风扇电机转速、不同的冷凝器水流量、自由冷却以及塔空气出口再循环的影响。 每种控制策略都是在最小化总体运营成本的基础上进行优化的。生成最佳控制图，以指示塔单元、风扇和冷却器叶片位置的最佳设置。通过模拟整个冷却季节，针对各种设备配置制定了优化控制策略指南。将优化策略下的能耗与当前运行下的能耗进行了比较。单位:双引文:研讨会，ASHRAE交易，1988年，第94卷，pt。德克萨斯州达拉斯1号

The subject of this paper is a large central plant with a steam turbine driven chiller whose refrigerant compressor is equipped with both variable speed and variable vane control. The cooling towers are multi-cell with both one- and two-speed fans. The primary goal of the project was to find ways to reduce the overall operating costs of the chiller plant.To study the many different options and to assess their costs and benefits, a computer simulation of the chiller plant was developed for use with TRNSYS (Klein et al. 1983). Generic computer models were developed for each of the major equipment components, with the specific parameters determined through measurements on the system.The control and equipment modifications investigated include alternative fan speed and tower cell sequencing, different fan motor speeds, different condenser water flow rates, free cooling, and the effect of tower air outlet recircul ation. Each control strategy was optimized on the basis of minimizing overall operating costs. Optimal control maps were generated to indicate the optimal setting of tower cells, fans, and chiller vane position. By simulating an entire cooling season, optimized control strategy guidelines were developed for various equipment configurations. Energy consumption under optimal strategies is compared to that under current operation.Units: Dual