为了提高系统的整体能效，选择了一台全变速冷水机组进行调试。它是一个一次二次水冷式冷水机组。在这个制冷装置中有三台不同尺寸的制冷机和一个双单元冷却塔。通过楼宇管理系统收集了七个月的趋势数据，包括冷冻水、冷凝水供应/回水温度和流速、泵速、室外条件和主要部件的功耗。在收集的数据期间，冷却装置的总体平均效率为0.975kW/吨。进行了各种趋势数据分析，如冷冻水温度重置、冷却器顺序和系统振荡，以检测该电厂的调试机会。 根据提交的设计文件和运行控制顺序，开发了一个能量模拟模型，以模拟现有冷水机组，并使用趋势数据进行校准。在本研究中，该模型被用于评估提高冷水机组效率的控制操作策略。引用:ASHRAE论文:2015年ASHRAE年会，佐治亚州亚特兰大

An all-variable speed chiller plant was selected for commissioning to improve system overall energy efficiency. It is a primary-secondary water-cooled chiller plant. There are three different-sized chillers and a two-cell cooling tower in this chiller plant. Seven-month trend data including chilled water, condensing water supply/return temperature and flow rates, pump speeds, outdoor conditions and power consumption of major components, were collected through building management system. The overall average chiller plant efficiency is 0.975kW/ton over the period of collected data. Various trend data analyses such as chilled water temperature reset, chiller sequences, and system oscillation, were conducted to detect commissioning opportunities for this plant. An energy simulation model was developed to simulate the existing chiller plant based on design submittals and operation control sequences, and was calibrated using trend data. The model was then used to evaluate control operational strategies for improving chiller plant efficiency in this study.