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	Experiment investigation of reverse cycle defrosting methods on air source heat pump with TXV as the throttle regulator
	Yanjun Ding ; Guoyuan Ma ; Qinhu Chai ; Yi Jiang
	2010-05-11 ; 2010-05-11
关键词	Practical Experimental/ air heat pumps solenoids switches thermal expansion valves/ reverse cycle defrosting method air source heat pump ASHP thermal expansive valve TXV throttle regulator temperature fluctuation heating mode low-pressure switch by-pass solenoid valve/ A8630R Thermal energy conversion (heat engines and heat pumps) A6570 Thermal expansion and thermomechanical effects B8550 Air conditioning
中文摘要	Reverse-cycle defrosting technique is one of the simplest and most widely used defrosting methods for air source heat pumps (ASHP). However, there are still some problems if thermal expansive valve (TXV) is used as throttle regulator in the unit: the defrosting process might last so long that users would feel uncomfortable due to the fluctuation of the indoor temperature: the system cannot resume heating mode smoothly after the defrosting process, the system often breaks down due to the triggering of low-pressure switch. In this paper the authors proposed that these two problems can be greatly relieved if there is a by-pass solenoid valve in the system which can by-pass the TXV used in the defrosting mode, and best performance can be addressed if the by-pass valve is energized during the whole defrosting process.
语种	英语 ; 英语
出版者	Elsevier for Int. Inst. Refrigeration ; UK
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25923]
专题	清华大学
推荐引用方式 GB/T 7714	Yanjun Ding,Guoyuan Ma,Qinhu Chai,et al. Experiment investigation of reverse cycle defrosting methods on air source heat pump with TXV as the throttle regulator[J],2010, 2010.
APA	Yanjun Ding,Guoyuan Ma,Qinhu Chai,&Yi Jiang.(2010).Experiment investigation of reverse cycle defrosting methods on air source heat pump with TXV as the throttle regulator..
MLA	Yanjun Ding,et al."Experiment investigation of reverse cycle defrosting methods on air source heat pump with TXV as the throttle regulator".(2010).

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