绝热坑槽内土壤热湿迁移的实验研究
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摘要
以太阳能在地下土壤蓄热为背景,通过实验研究了绝热坑槽内土壤的热湿迁移问题.实验中分别测试了不同蓄热温度、不同初始含湿量下土壤温度场和湿度场的变化过程,分析了蓄热温度和含湿量对土壤温度场和湿度场的影响,得到热湿迁移过程中温度场和湿度场变化是同步进行、相互影响的结论.当初始含湿量为0.2m3/m3时,坑槽内土壤的整体温升最大.蓄热温度越高,坑槽内土壤的整体温升越高,越有利于坑槽的蓄热.
Based on solar energy stored in the soil,the thesis is on the transfer between the heat and moisture in adiabatic pit slot soil by experiments.It tests the variation of temperature and humidity of the field at different heat storages and different initial moisture contents,and analyzes the influence that temperature of heat storage and content of different initial moisture acts on soil temperature field and humidity field,and then comes to the conclusion that the variation of heat field and moisture field in the process of heat transfer is synchronized and influences each other.When the initial moisture content is 0.2m3/m3,the overall temperature of soil in pit slot reaches the highest pot.The higher heat storage temperature,the faster overall temperature in soil pit rises,and more favorable to the heat storage of pit slot.
Based on solar energy stored in the soil,the thesis is on the transfer between the heat and moisture in adiabatic pit slot soil by experiments.It tests the variation of temperature and humidity of the field at different heat storages and different initial moisture contents,and analyzes the influence that temperature of heat storage and content of different initial moisture acts on soil temperature field and humidity field,and then comes to the conclusion that the variation of heat field and moisture field in the process of heat transfer is synchronized and influences each other.When the initial moisture content is 0.2m3/m3,the overall temperature of soil in pit slot reaches the highest pot.The higher heat storage temperature,the faster overall temperature in soil pit rises,and more favorable to the heat storage of pit slot.
引文
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[2]韩晓平.科学用能:应对能源的挑战[J].电力需求侧管理,2005,7(1):22-25.HAN Xiao-ping.Scientific energy utility to deal with energy challenge[J].Power Demand Side Management,2005,7(1):22-25.
[3]李岚红.我国能源消费现状分析[J].经营与管理,2010(7):24-25.LI Lan-hong.The energy consumption analysis of the situation in our country[J].Management and Administration,2010(7):24-25.
[4]Lottner V,Schulz M E,Hahne E.Solar-assisted district heating plants:Status of the German programme solarthermie-2000[J]Solar Energy,2000,69(6):449-459.
[5]崔俊奎,赵军,李新国,等.跨季节蓄热地源热泵地下蓄热特性的理论研究[J].太阳能学报,2008,29(8):920-926.CUI Jun-kui,ZHAO Jun,LI Xin-guo,et al.Theoretical research on underground heat storage performance of ground coupled heat pump system with seasonal storage[J].Acta Energiae Solaris Sinica,2008,29(8):920-926.
[6]刘莹.封闭空间半无限大土体的热湿耦合研究[D].西安:西安建筑科技大学,2011.LIU Ying.Research of thermal and humidity coupled transfar of the earth under the enclosed space[D].Xi’an:Xi’an University of Architecture and Technology,2011.
[7]张小彬,朱卫兵,谭斯鹏.一维多孔介质热湿耦合传递问题的解析解[J].哈尔滨工程大学学报,2011,32(8):984-987.ZHANG Xiao-bin,ZHU Wei-bin,TAN Si-peng.Theoretical analysis of computing coupled heat and moisture transfer in a one-dimensional porous medium[J].Journal of Harbin Engineering University,2011,32(8):984-987.
[8]王华军,齐承英,王恩宇,等.土壤高温储热热湿迁移过程的初步研究[J].太阳能学报,2009,30(12):1683-1687.WANG Hua-jun,QI Cheng-ying,WANG En-yu,et al.Preliminary study of heat and moisture transfer during high-temperature thermal storage of soils[J].Acta Energiae Solaris Sinica,2009,30(12):1683-1687.
[9]杜梅霞.热湿传递综合作用下地源热泵运行特性分析[D].邯郸:河北工程大学,2011.DU Mei-xia.The operating performance analysis of GSHP with the heat and moisture transfer in unsaturated soil[D].Handan:Hebei University of Engineering,2011.