冰蓄冷空调系统与空气换热器相结合进行冬季供热的效果分析
Heating performance analysis of ice cool storage air conditioning system combined with airsource heat exchanger
摘要：
针对日益增加的夏热冬冷地区冬季供热需求，提出增设一套空气换热器并与冰蓄冷空调相结合，实现全年供冷与供热的新系统。以上海某餐厅现有的冰蓄冷空调系统为例，计算了满足供热要求的改造方案，分析了方案的技术经济性，并与新增燃气锅炉供热系统进行了比较；分析了夏热冬冷地区5个典型城市应用新系统的供热性能和经济性。结果表明：在整个供热季，上海地区利用冰蓄冷系统改造而成的供热系统一次能源效率平均值为1.53，相比于燃气锅炉提高了70%，节能率为39.4%；5个城市的供热季平均一次能源效率均在1.5~1.6之间。利用本文方法对现有的冰蓄冷空调系统进行供热改造，具有投资少、工程量小、节能率高等特点，是解决长江流域冬季供热的一种新途径。
Abstract：
Focusing on the increasing heating requirements in hot summer and cold winter zone, proposes a novel ice cool storage air conditioning system combining with an additional airsource heat exchanger to realize both heating and cooling. Taking a restaurant equipped with ice cool storage air conditioning system in Shanghai as an example, designs a retrofit solution to meet the heating demand. Analyses the economic and technical feasibility and compares with a conventional system with auxiliary gasfired boiler. Moreover, investigates the application potential of the proposed system in five cities of hot summer and cold winter zone. The results show that the average primary energy efficiency of the new proposed system in heating mode can reach 1.53, with an energy saving rate of 39.4% compared with the gasfired boiler. In addition, the average primary heating energy efficiencies in five cities are in the range of 1.5~1.6. The retrofit solution for existing ice cool storage air conditioning systems has advantages of low investment, small engineering quantity as well as high energy saving ratio, which could be a potential heating solution in the Yangtze River basin.
Keywords:ice cool storage air conditioning system, heat supply, airsource heat exchanger, economic analysis, hot summer and cold winter zone