Performance analysis and capacity sizing for chillers for the HVAC system in a hotel building.

With energy shortage issue rises, value of energy conservation grows. The energy consumption of HVAC system reaches about 50% of the building especially for the hot and humid ambient condition in Taiwan. Energy modelling code eQUEST was applied to evaluate the energy consumption of a hotel building. Through the validation of simulation data and field measurement data, the energy-efficient chiller sizing approach can be obtained. The results revealed that the energy saving of 10.5% can be achieved by optimizing the chiller capacity sizing. The approach by energy modelling in this study will identify the best practice under limited budget as well as to reduce the trial-and-error effort while chiller sizing decision for energy saving have to be carried out.

随着能源短缺问题日益凸显，节能的价值愈发重要。暖通空调系统（HVAC）的能耗占建筑总能耗的比例约为50%，尤其在台湾炎热潮湿的环境条件下。本研究应用能源建模软件eQUEST评估某酒店建筑的能耗，通过对模拟数据与现场实测数据的验证，得出了节能型冷水机组选型方法。结果表明，优化冷水机组容量选型可实现10.5%的节能率。本研究提出的能源建模方法，既能在预算有限的情况下确定最佳实践方案，又能降低节能导向的冷水机组选型决策过程中的试错成本。