对于单层面积大、内区房间多、冷负荷比较大的建筑，采用冷却塔免费供冷，既环保，又节能。本文以上海某集办公、酒店与商业为一体的玻璃幕墙建筑为研究对象，简要介绍了冷却塔免费供冷的原理与形式，通过对冷却塔免费供冷的分析与计算，确定了冷却塔过渡季节的供冷温度，并从空调机组送风温度、过渡季节冷负荷与夏季设计冷负荷之比、冷却塔供回水温差三个方面出发，研究其对冷却塔供水温度的影响，得出了一些有益的结论% For the building with large single-floor area, many inner-rooms and high cooling-load, free cooling technology by using cooling tower is environment-protective and energy-saving. Based on a glass curtain wall building with offices, hotels and commercial rooms, the theory and form of free cooling system are introduced, and the supply cooling water temperature during transition season is determined by analysis and calculation. Three factors, including supply air temperature of air handling unit, ratio of cooling load of transition season to that of summer, and temperature difference of cooling tower supply and return water, which influence the cooling tower supply water temperature are studied. Some useful conclusions are obtained in this paper.
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