应用埋式毛细管网换热器的海水源热泵系统适用性研究

Suitability study of seawater source heat pump system utilizingburied capillary network heat exchanger

海水源热泵系统面临着生物附着、管道腐蚀、严寒天气换热器结冰等问题,影响其性能系数。将材质为PP-R的毛细管网换热器埋置于海床砂土中的海水源热泵系统能够有效避免以上问题。基于能耗模拟数据,对比了海水源热泵系统、空气源热泵系统和冷水机组+燃气锅炉系统的经济性和环保性。结果显示,应用埋式毛细管网换热器的海水源热泵系统的经济效益和环保效益均为最优。系统运行20年,海水源热泵系统的全寿命周期成本为459.5万元,最小年费用为46.8万元,建筑生命周期内其单位面积的碳排放量比空气源热泵系统低10%,比冷水机组+燃气锅炉系统低21%。本研究使消费者对该热泵系统有了更深的了解,为推广此应用提供数据支撑。

Seawater source heat pump systems face problems such as biological attachment,pipe corrosion and heat exchanger icing in severe cold weather,which affect its coefficient of performance(COP).The seawater source heat pump system which utilizes capillary network heat exchanger made of PP-R and buried in the sandy soil of sea bed can effectively avoid the above problems.Based on energy consumption simulation data,this study compares the economy and environmental friendliness of seawater source heat pump system,air source heat pump system and the chiller+gas boiler system.The results show that the economic and environmental benefits of the seawater source heat pump system with the buried capillary network heat exchanger are optimal.With 20 years of system operation,the whole life cycle cost of the seawater source heat pump system is 4.595 million RMB,with a minimum annual cost of 468000 RMB,and its carbon emissions per unit area over the life cycle of the building are 10%lower than that of the air source heat pump system and 21%lower than that of the chiller+gas boiler system.This study provides consumers with a better understanding of the seawater source heat pump system and provides data to support the promotion of its application.