热管式真空管和平板型集热器在兰州地区太阳能热水系统中的热性能对比分析
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摘要
利用TRNSYS软件对兰州市某住宅小区别墅用户建立热管式真空管太阳能集热器及平板型太阳能集热器热水系统模型,并结合兰州地区气象参数,选择在兰州最冷月的太阳辐射强度最小日及太阳辐射强度最大日对系统进行了仿真模拟,得到了热管式真空管太阳能集热器热水系统和平板型太阳能集热器热水系统的太阳能辐射强度、有效的热量、太阳能保证率及系统效率的分布。分析发现在同样的气象条件下,热管式真空管集热器太阳能热水系统的太阳能保证率及系统效率都要比平板型集热器太阳能热水系统高,说明热管式真空管集热器的性能更优。
In this article,hot-water system model for heat pipe vacuum tube solar collector and flat panel solar collector was built by TRNSYS in a residential district of Lanzhou,and it is simulated in the days that solar radiation intensity is minumum and maximum in coldest winter month in consideration of meteorological parameter in Lanzhou.As a result,distribution curve of solar radiation intensity,valid heat gain,solar fraction and system efficiency were got for hot pipe type vacuum tube solar collector hot water system and flat plate solar collector hot water system.Under same meteorological condition,solar fraction and system efficiency of hot pipe type vacuum tube solar collector hot water system were higher than that of flat plate solar collector hot water system after analysis,as showing the former has more superior property.
In this article,hot-water system model for heat pipe vacuum tube solar collector and flat panel solar collector was built by TRNSYS in a residential district of Lanzhou,and it is simulated in the days that solar radiation intensity is minumum and maximum in coldest winter month in consideration of meteorological parameter in Lanzhou.As a result,distribution curve of solar radiation intensity,valid heat gain,solar fraction and system efficiency were got for hot pipe type vacuum tube solar collector hot water system and flat plate solar collector hot water system.Under same meteorological condition,solar fraction and system efficiency of hot pipe type vacuum tube solar collector hot water system were higher than that of flat plate solar collector hot water system after analysis,as showing the former has more superior property.
引文
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[16]Ayompe L M,Duffy A,Mccormack S,et al.Validated TRNSYS Model for Forced Circulation Solar Water Heating Systems with Flat Plate and Heat Pipe Evacuated Tube Collectors[J].Applied Thermal Engineering,2011,31(8-9):1536-1542.
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[20]夏亚莉.兰州地区机械加工厂房太阳能热风供热系统的数值模拟研究[D].兰州:兰州理工大学,2014.
[2]Gunerhan H,Hepbasli A.Exergetic Modeling and Performance Evaluation of Solar Water Heating Systems for Building Applications[J].Energy and Buildings,2007,39(5):509-516.
[3]Wang X W,Hua B.Exergy Analysis of Domestic-Scale Solar Water Heaters[J].Renewable and Sustainable Energy Reviews,2005,9(6):638-645.
[4]Azad E.Theoretical and Experimental Investigation of Heat Pipe Solar Collector[J].Experimental Thermal and Fluid Science,2008,32(8):1666-1672.
[5]Hussein H M S.Theoretical and Experimental Investigation of Wickless Heat Pipes Flat Plate Solar Collector with Cross Flow Heat Exchanger[J].Energy Conversion and Management,2007,48(4):1266-1272.
[6]Riffat S B,Zhao X,Doherty P S.Developing a Theoretical Model to Investigate Thermal Performance of a Thin Membrane Heat-pipe Solar Collector[J].Applied Thermal Engineering,2005,25(5-6):899-915.
[7]Bong T Y,Ng K C,Bao H.Thermal Performance of a Flatplate Heat-pipe Collector Array[J].Solar Energy,1993,50(6):491-498.
[8]Ezekwe C I.Thermal Performance of Heat Pipe Solar Energy Systems[J].Solar&Wind Technology,1990,7(4):349-354.
[9]Bojic M,Kalogirou S,Petronijevic K.Simulation of a Solar Domestic Water Heating System Using a Time Marching Model[J].Renewable Energy,2002,27(3):441-452.
[10]Kalogirou S A.Use of TRNSYS for Modelling and Simulation of a Hybrid PV-thermal Solar System for Cyprus[J].Renewable Energy,2001,23(2):247-260.
[11]Kalogirou S A.Solar Energy Engineering:Processes and Systems[M].2nd Edition.New York:Academic Press,2013.
[12]German Solar Energy Society.Planning and Installing Solar Thermal Systems:A Guide for Installers,Architects and Engineers[M].2nd Edition.London:Earthscan Ltd.,2010.
[13]Sukhatme S P,Nayak J K.Solar Energy:Principles of Thermal Collection and Storage[M].3rd Edition.New Delhi:McGraw-Hill Education,2009.
[14]Duffie J A,Beckman W A.Solar Engineering of Thermal Processes[M].4th Edition.New Jersey:John Wiley&Sons,2013.
[15]Ayompe L M,Duffy A,Mc Keever M,et al.Comparative Field Performance Study of Flat Plate and Heat Pipe Evacuated Tube Collectors(ETCs)for Domestic Water Heating Systems in a Temperate Climate[J].Energy,2011,36(5):3370-3378.
[16]Ayompe L M,Duffy A,Mccormack S,et al.Validated TRNSYS Model for Forced Circulation Solar Water Heating Systems with Flat Plate and Heat Pipe Evacuated Tube Collectors[J].Applied Thermal Engineering,2011,31(8-9):1536-1542.
[17]郑瑞澄.民用建筑太阳能热水系统工程技术手册[M].第2版.北京:化学工业出版社,2011.
[18]中华人民共和国住房和城乡建设部.建筑给水排水设计规范:GB50015-2003[S].2009版.北京:中国计划出版社,2003.
[19]中国建筑标准设计研究院.太阳能集中热水系统选用与安装:GJBT-960[S].北京:中国计划出版社,2006.
[20]夏亚莉.兰州地区机械加工厂房太阳能热风供热系统的数值模拟研究[D].兰州:兰州理工大学,2014.