石蜡复合混凝土太阳能相变蓄能炕系统的热性能研究
|
摘要
设计了一种以相变材料石蜡与混凝土相结合相变蓄能炕采暖系统,并将其与传统火炕、纯混凝土炕和纯石蜡炕进行了对比分析.在供热温度35℃、供热流量0.95L/min实验条件下,测试了系统炕面温度、石蜡温度、进出口温度和炕面热流密度等参数.实验结果表明:石蜡混凝土炕面温度分布均匀,其炕头、炕中和炕尾温度无明显差异,供热效果与纯石蜡炕相近,且系统初投资比纯石蜡炕节省了30%.石蜡混凝土炕面平均温度为33.29℃,比传统火炕高10℃,炕面降温速率却仅为传统火炕的15%.与纯混凝土炕相比,由于结构不同,石蜡混凝土炕体在炕面平均温度、夜间温度下降速率、炕面热流密度和供回水温差特性上均优于纯混凝土炕.
The phase change storage kangheating system is designed by using phase change material composited by paraffin and concrete(Paraffin-concrete),and comparisons have been made of the new heating system with the traditional kang,pure concrete kangand pure paraffin kang.At the set temperature of 35 ℃ and the flow rate of 0.95 L/min,the temperature of each monitoring point is measured.The results show that the paraffin-concrete kangsurface temperature is evenly distributed,heating effect is remarkable same as pure paraffin kang,and 30% initial investment can be saved compared with the pure paraffin kang.Paraffin-concrete kang surface average temperature can reached 33.29 ℃,10 ℃ higher than the traditional kang,paraffin-concrete kangsurface cooling rate is only 15% compared with traditional kang.For the characteristics of kangsurface temperature,temperature cooling rate in the night,kangsurface thermal flux and temperature difference between supply and back-water pipes,the paraffin-concrete kangis better than the pure concrete kangdue to the different structures.
The phase change storage kangheating system is designed by using phase change material composited by paraffin and concrete(Paraffin-concrete),and comparisons have been made of the new heating system with the traditional kang,pure concrete kangand pure paraffin kang.At the set temperature of 35 ℃ and the flow rate of 0.95 L/min,the temperature of each monitoring point is measured.The results show that the paraffin-concrete kangsurface temperature is evenly distributed,heating effect is remarkable same as pure paraffin kang,and 30% initial investment can be saved compared with the pure paraffin kang.Paraffin-concrete kang surface average temperature can reached 33.29 ℃,10 ℃ higher than the traditional kang,paraffin-concrete kangsurface cooling rate is only 15% compared with traditional kang.For the characteristics of kangsurface temperature,temperature cooling rate in the night,kangsurface thermal flux and temperature difference between supply and back-water pipes,the paraffin-concrete kangis better than the pure concrete kangdue to the different structures.
引文
[1]赵文元,刘泽勤.我国寒冷地区农村供暖方式及节能技术解析[J].建筑节能,2017(4):14-19.ZHAO Wenyuan,LIU Zeqin.Analysis of heating mode and energy saving technology in rural areas in cold regions of China[J].Journal of Building Energy Conservation,2017(4):14-19.
[2]张玲.寒冷地区农居太阳能炕采暖系统设计研究[D].济南:山东建筑大学,2010.ZHANG Ling.Study on the heating system design of solar bed in rural areas in cold regions of China[D].Jinan:Shandong University of Architecture,2010.
[3]冯国会,王茜,李刚,等.太阳能炕采暖系统的试验研究[J].可再生能源,2013(3):11-13.FENG Guohui,WANG Qian,LI Gang,et al.Experimental Study on Heating System of Solar Kang[J].Renewable Energy,2013(3):11-13.
[4]李刚,池兰,冯国会,等.相变蓄能火炕热舒适性的试验[J].农业工程学报,2016(11):244-249.LI Gang,CHI Lan,FENG Guohui,et al.Experiment on thermal comfort of phase change energy storage bed[J].Journal of Agricultural Engineering,2016(11):244-249
[5]江清阳,何伟,季杰,等.太阳能炕的蓄热特性研究及其对睡眠热舒适度的影响[J].中国科学技术大学学报,2012(4):335-344.JIANG Qingyang,HE Wei,JI Jie,et al.Research on thermal storage characteristics of solar bed and its effect on sleep thermal comfort[J].Journal of University of Science and Technology of China,2012(4):335-344.
[6]崔玉清,季杰,何伟,等.太阳能炕和Trombe墙相结合的新型太阳能采暖系统的数值研究[J].太阳能学报,2011(1):66-71.Cui Yuqing,JI Jie,HE Wei,et al.Numerical study of a new solar heating system combined with solar Kang and Trombe wall[J].Journal of Solar Energy,2011(1):66-71.
[7]郭敏,马秀琴,葛梦媛,等.太阳能相变材料蓄能炕设计与实验初探[J].能源与节能,2017(2):62-64,99.GUO Min,MA Xiuqin,GE Mengyuan,et al.Design and experiment of phase change materials for solar energy storage bed[J].Energy and Energy Conservation,2017(2):62-64,99.
[8]张仁远,相变材料与相变储热技术[M].北京:科学出版社,2009.ZHANG Renyuan.Phase change materials and phase change heat storage technology[M].Beijing:Science Press,2009.
[9]王芳,方修睦,刘婷婷,等.火炕热工性能评价指标及检测方法的试验验证分析[J].建筑科学,2014(6):124-127.WANG Fang,FANG Xiumu,LIU Tingting,et al.Experimental verification and analysis of thermal performance evaluation index and test method of fire Kang[J].Architectural Science,2014(6):124-127.
[10]端木琳,赵洋,王宗山.火炕热工性能的研究及其评价方法[J].建筑科学,2009,25(12):30-38.DUANMU Lin,ZHAO Yang,WANG Zongshan.Study on the thermal properties of fire Kang and its evaluation method[J].Architectural Science,2009,25(12):30-38.
[11]李安桂,石金凤.村镇住宅建筑太阳能供热系统技术经济分析[J].太阳能学报,2010,12(31):1615-1620.LI Angui,SHI Jinfeng.Technical and economic analysis of solar heating systems for residential buildings in villages and towns[J].Journal of Solar Energy,2010,12(31):1615-1620
[12]卢梅,王贤君.太阳能热水系统在建筑全寿命期的经济效益评价研究[J].建筑经济,2013(1):98-101.LU Mei,WANG Xianjun.Study on the Economic benefit Evaluation of Solar Water heating system in the whole Life of build-ings[J].Construction Economy,2013(1):98-101.
[2]张玲.寒冷地区农居太阳能炕采暖系统设计研究[D].济南:山东建筑大学,2010.ZHANG Ling.Study on the heating system design of solar bed in rural areas in cold regions of China[D].Jinan:Shandong University of Architecture,2010.
[3]冯国会,王茜,李刚,等.太阳能炕采暖系统的试验研究[J].可再生能源,2013(3):11-13.FENG Guohui,WANG Qian,LI Gang,et al.Experimental Study on Heating System of Solar Kang[J].Renewable Energy,2013(3):11-13.
[4]李刚,池兰,冯国会,等.相变蓄能火炕热舒适性的试验[J].农业工程学报,2016(11):244-249.LI Gang,CHI Lan,FENG Guohui,et al.Experiment on thermal comfort of phase change energy storage bed[J].Journal of Agricultural Engineering,2016(11):244-249
[5]江清阳,何伟,季杰,等.太阳能炕的蓄热特性研究及其对睡眠热舒适度的影响[J].中国科学技术大学学报,2012(4):335-344.JIANG Qingyang,HE Wei,JI Jie,et al.Research on thermal storage characteristics of solar bed and its effect on sleep thermal comfort[J].Journal of University of Science and Technology of China,2012(4):335-344.
[6]崔玉清,季杰,何伟,等.太阳能炕和Trombe墙相结合的新型太阳能采暖系统的数值研究[J].太阳能学报,2011(1):66-71.Cui Yuqing,JI Jie,HE Wei,et al.Numerical study of a new solar heating system combined with solar Kang and Trombe wall[J].Journal of Solar Energy,2011(1):66-71.
[7]郭敏,马秀琴,葛梦媛,等.太阳能相变材料蓄能炕设计与实验初探[J].能源与节能,2017(2):62-64,99.GUO Min,MA Xiuqin,GE Mengyuan,et al.Design and experiment of phase change materials for solar energy storage bed[J].Energy and Energy Conservation,2017(2):62-64,99.
[8]张仁远,相变材料与相变储热技术[M].北京:科学出版社,2009.ZHANG Renyuan.Phase change materials and phase change heat storage technology[M].Beijing:Science Press,2009.
[9]王芳,方修睦,刘婷婷,等.火炕热工性能评价指标及检测方法的试验验证分析[J].建筑科学,2014(6):124-127.WANG Fang,FANG Xiumu,LIU Tingting,et al.Experimental verification and analysis of thermal performance evaluation index and test method of fire Kang[J].Architectural Science,2014(6):124-127.
[10]端木琳,赵洋,王宗山.火炕热工性能的研究及其评价方法[J].建筑科学,2009,25(12):30-38.DUANMU Lin,ZHAO Yang,WANG Zongshan.Study on the thermal properties of fire Kang and its evaluation method[J].Architectural Science,2009,25(12):30-38.
[11]李安桂,石金凤.村镇住宅建筑太阳能供热系统技术经济分析[J].太阳能学报,2010,12(31):1615-1620.LI Angui,SHI Jinfeng.Technical and economic analysis of solar heating systems for residential buildings in villages and towns[J].Journal of Solar Energy,2010,12(31):1615-1620
[12]卢梅,王贤君.太阳能热水系统在建筑全寿命期的经济效益评价研究[J].建筑经济,2013(1):98-101.LU Mei,WANG Xianjun.Study on the Economic benefit Evaluation of Solar Water heating system in the whole Life of build-ings[J].Construction Economy,2013(1):98-101.