空气源热泵溶液除霜及冷冻再生技术研究
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摘要
针对空气源热泵结霜/除霜导致机组制热性能衰减及可靠性低等问题,提出了一种基于溶液除霜和溶液冷冻再生的空气源热泵系统。基于溶液化学势理论,分析了溶液除霜和溶液冷冻再生的机理,设计了空气源热泵溶液除霜及冷冻再生系统,确定了除霜溶液的种类及应用浓度范围,并搭建了实验台。实验测试结果表明:在一个结霜/除霜周期内,溶液除霜及冷冻再生方式的平均制热性能系数及制热量较常规逆循环除霜方式分别提高了11.3%和16.5%,并能实现机组连续制热。
Aiming at the problems of heating performance attenuation and low reliability of air-source heat pump caused by frosting and defrosting,presents an air-source heat pump system based on solution defrosting and freezing regeneration.According to the solution chemical potential theory,analyses the mechanism of solution defrosting and freezing regeneration.Designs an air-source heat pump system with solution defrosting and freezing regeneration. Determines the kind of defrosting solution and the application concentration range,and develops an experimental platform.The experimental test results show that in a frosting/defrosting cycle,the average heating performance coefficient and capacity of the solution defrosting and freezing regeneration method are increased by 11.3% and 16.5% respectively,compared with the conventional reverse circulation defrosting method,and the continuous heating can be realized.
Aiming at the problems of heating performance attenuation and low reliability of air-source heat pump caused by frosting and defrosting,presents an air-source heat pump system based on solution defrosting and freezing regeneration.According to the solution chemical potential theory,analyses the mechanism of solution defrosting and freezing regeneration.Designs an air-source heat pump system with solution defrosting and freezing regeneration. Determines the kind of defrosting solution and the application concentration range,and develops an experimental platform.The experimental test results show that in a frosting/defrosting cycle,the average heating performance coefficient and capacity of the solution defrosting and freezing regeneration method are increased by 11.3% and 16.5% respectively,compared with the conventional reverse circulation defrosting method,and the continuous heating can be realized.
引文
[1]顾泽波,黄东,袁秀玲.空气源热泵冷(热)水机组的逆循环除霜性能研究[J].制冷与空调,2008,8(3):40-43
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[9]JIANG Y Q,FU H Y,YAO Y,et al.Experimental study on concentration change of spray solution used for a novel non-frosting air source heat pump system[J].Energy and Buildings,2014,68:707-712
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[11]余延顺,孙成龙,孙家正,等.一种冷冻再生的溶液除霜型热泵机组:201510218768.0[P].2017-05-17
[12]孙家正.空气源热泵溶液除霜及冷冻再生技术的研究[D].南京:南京理工大学,2016:18-21
[13]傅献彩,沈文霞,姚天扬,等.物理化学(上册)[M].5版.北京:高等教育出版社,2005:408-410
[14]LONGO G A,GASPARELLA A.Experimental and theoretical analysis of heat and mass transfer in a packed column dehumidifier/regenerator with liquid desiccant[J].International Journal of Heat and Mass Transfer,2005,48(25):5240-5254
[15]LONGO G A,GASPARELLA A.Three years experimental comparative analysis of a desiccant based air conditioning system for a flower greenhouse:assessment of different desiccants[J].Applied Thermal Engineering,2015,78(3):584-590
[2]罗鸣,谢军龙,沈国民.风冷热泵机组中的热气除霜方法[J].节能,2003(5):12-14
[3]韩志涛,姚杨,马最良,等.空气源热泵蓄能热气除霜新系统与实验研究[J].哈尔滨工业大学学报,2007,39(6):901-903
[4]HU W J,JIANG Y Q,QU M L,et al.An experimental study on the operating performance of a novel reverse-cycle hot gas defrosting method for air source heat pumps[J].Applied Thermal Engineering,2011,31(2):363-369
[5]HUANG D,LI Q X,YUAN X L.Comparison between hot-gas bypass defrosting and reverse-cycle defrosting methods on an air-to-water heat pump[J].Applied Energy,2009,86(9):1697-1703
[6]QU M L,XIA L,DENG S M,et al.Improved indoor thermal comfort during defrost with a novel reverse-cycle defrosting method for air source heat pumps[J].Building and Environment,2010,45(11):2354-2361
[7]姚杨,姜益强,高强.无霜空气源热泵系统初步实验研究[J].建筑科学,2012,28(2):198-199
[8]王志华,王沣浩,郑煜鑫,等.一种新型无霜空气源热泵热水器实验研究[J].制冷学报,2015,36(1):52-58
[9]JIANG Y Q,FU H Y,YAO Y,et al.Experimental study on concentration change of spray solution used for a novel non-frosting air source heat pump system[J].Energy and Buildings,2014,68:707-712
[10]付慧影.无霜空气源热泵系统除湿溶液再生方式及特性研究[D].哈尔滨:哈尔滨工业大学,2012:60-65
[11]余延顺,孙成龙,孙家正,等.一种冷冻再生的溶液除霜型热泵机组:201510218768.0[P].2017-05-17
[12]孙家正.空气源热泵溶液除霜及冷冻再生技术的研究[D].南京:南京理工大学,2016:18-21
[13]傅献彩,沈文霞,姚天扬,等.物理化学(上册)[M].5版.北京:高等教育出版社,2005:408-410
[14]LONGO G A,GASPARELLA A.Experimental and theoretical analysis of heat and mass transfer in a packed column dehumidifier/regenerator with liquid desiccant[J].International Journal of Heat and Mass Transfer,2005,48(25):5240-5254
[15]LONGO G A,GASPARELLA A.Three years experimental comparative analysis of a desiccant based air conditioning system for a flower greenhouse:assessment of different desiccants[J].Applied Thermal Engineering,2015,78(3):584-590