电子厂房制冷站全年综合能效及经济性分析
Analysis of annual comprehensive energy efficiency and economy ofrefrigeration station in electronic plants
摘要：
以实际电子厂房为研究对象,通过冷负荷计算、冷源设备选型及相应制冷系统设备全年逐时能耗的计算与统计,对比了中、低温冷水机组(方案1)与中、低温冷水机组+冷却塔(方案2)2种冷源方案的全年综合能效及经济性。结果表明:2种冷源方案均可达到高效机房二级以上能效;冷源方案2比冷源方案1全年综合能效更高,并可通过降低冷却塔逼近度及板式换热器换热温差延长冷却塔自然冷却供冷时间,从而进一步提升全年综合能效;长期运行情况下,冷源方案2更经济。
Abstract：
Taking an actual electronic plant as the research object, the annual comprehensive energy efficiency and economy of the two cold source schemes of medium and low temperature chillers (scheme 1) and medium and low temperature chillers plus cooling towers (scheme 2) are compared through the calculation of cooling load, the selection of cold source equipment and the calculation and statistics of the annual hourly energy consumption of the corresponding refrigeration system equipment. The results show that the two cold source schemes can achieve the energy efficiency of the high-efficiency refrigeration room above the second level. The annual comprehensive energy efficiency of cold source scheme 2 is higher than that of cold source scheme 1, and the natural cooling time of the cooling tower can be extended by reducing the approach of the cooling tower and the heat exchange temperature difference of the plate exchanger, so as to further improve the annual comprehensive energy efficiency. In the case of long-term operation, cold source scheme 2 is more economical.
Keywords:electronic plant; refrigeration station; annual comprehensive energy efficiency; high-efficiency refrigeration room; natural cooling