燃气机热泵余热除霜方法理论分析Defrosting Process and Theory Analysis of Gas Engine-driven Heat Pump System
李应林,张小松,贡志林,刘飞
LI Ying-lin1,ZHANG Xiao-song1,GONG Zhi-lin2,LIU Fei2(1.Southeast University
摘要(Abstract)：
提出了一种新型的燃气机热泵机组余热除霜方法,并阐述了该余热除霜方法的运行机理和运行过程。从系统可操作性和能量平衡两个角度分析了余热除霜方法的可行性,结果表明在系统除霜过程中,保温水箱热水温度波动一般在16~25℃范围内,保温水箱中的热水温度最低可保持在55℃以上,表明余热除霜方式是可行的;与逆向除霜方式、显热除霜方式等相比较,在相同的结霜条件下,余热除霜方式的融霜耗功最低,系统供热量最高,系统平均性能系数最高,结果表明余热除霜是一种有效的节能的除霜方法。
A new heat-recycling defrosting method on the gas engine-driven heat pump is represented and the defrosting theory and operating process are given.From the two aspects of systemic operating reliability and energy balance,the feasibility of the heat-recycling defrosting method is discussed,the results show that,during the systemic defrosting,the fluctuation of heat water temperature in the heat-preserved water tank is between 16 ℃ to 25 ℃,also the heat water temperature in the water tank can be kept over 55 ℃,so the heat-recycling defrosting method is feasible.Furthermore,comparing with reverse defrosting and sensible heat defrosting,the consumed energy for defrosting is the lowest,and the heat supplying and the average performance coefficient is the highest,hence the heat-recycling defrosting is an effective and energy-saving defrosting method.
关键词(KeyWords)：
燃气热泵;发动机;除霜;余热
gas engine-driven heat pump;engine;defrost;recovery heat
基金项目(Foundation):
作者(Author):
李应林,张小松,贡志林,刘飞
LI Ying-lin1,ZHANG Xiao-song1,GONG Zhi-lin2,LIU Fei2(1.Southeast University
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