管板蒸发冷却式冷水(热泵)机组的适用性分析

以热源侧采用管板式换热器的蒸发冷却式冷水(热泵)机组为对象,采用实验及模拟相结合的方法,综合考虑防冻液的再生过程,建立了机组的性能模型,基于机组制热量是否适应建筑热负荷需求探讨了其适用性,并据此分析了其在典型城市办公建筑中的全年能耗、全年性能系数APF及一次能源利用率PER。结果表明:管板蒸发冷却式冷水(热泵)机组适用于我国夏热冬冷地区以及济南以南纬度较低的部分寒冷地区;在夏热冬冷地区办公建筑中APF在3.83～4.38之间,PER在1.10～1.26之间,而在济南以南纬度较低的寒冷地区办公建筑中APF在3.19～3.55之间,PER在0.92～1.02之间,且其PER均大于传统的水冷冷水机组+锅炉的冷热源方案。

Applicability analysis of tube-plate evaporatively-cooled water chilling (heat pump) packages

Taking the evaporatively-cooled water chilling(heat pump)packages using tube-plate heat exchanger on the heat source side as an object and considering the energy consumption of antifreeze solution regeneration,establishes the performance model of the packages using the methods of experiment and simulation.Conducts the applicability analysis of the packages by judging whether the heating capacity can meet the heating load demand.On this basis,analyses the annual energy consumption,annual performance factor(APF)and primary energy ratio(PER)of the packages in typical urban office buildings.The results indicate that tube-plate evaporatively-cooled water chilling(heat pump)packages are applicable in hot summer and cold winter zone and the part of cold zone south of Jinan.The APFs in office buildings in hot summer and cold winter zone are between 3.83 and 4.38,and the PERs are between 1.10 and 1.26.While the APFs in the part of cold zone south of Jinan are between 3.19 and 3.55 and the PERs are between 0.92 and 1.02.Its PERs are higher than that of conventional cold and heat sources using the water-cooled chiller and boiler.