[1]杨卫波,施明恒,陈振乾.太阳能-U形埋管土壤蓄热特性数值模拟与实验验证[J].东南大学学报(自然科学版),2008,38(4):651-656.[doi:10.3969/j.issn.1001-0505.2008.04.021]
 Yang Weibo,Shi Mingheng,Chen Zhenqian.Numerical simulation and experimental validation of energy storage characteristics of solar-U-tube soil[J].Journal of Southeast University (Natural Science Edition),2008,38(4):651-656.[doi:10.3969/j.issn.1001-0505.2008.04.021]
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太阳能-U形埋管土壤蓄热特性数值模拟与实验验证()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第4期
页码:
651-656
栏目:
能源与动力工程
出版日期:
2008-07-20

文章信息/Info

Title:
Numerical simulation and experimental validation of energy storage characteristics of solar-U-tube soil
作者:
杨卫波1 施明恒2 陈振乾2
1 扬州大学能源与动力工程学院, 扬州 225009; 2 东南大学能源与环境学院, 南京 210096
Author(s):
Yang Weibo1 Shi Mingheng2 Chen Zhenqian2
1 School of Energy and Power Engineering, Yangzhou University, Yangzhou 225009, China
2 School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
太阳能 U形埋管 土壤蓄热
Keywords:
solar energy U-tube soil energy storage
分类号:
TU83
DOI:
10.3969/j.issn.1001-0505.2008.04.021
摘要:
为了探讨利用太阳能-地源热泵系统中现有钻孔U形埋管进行太阳能跨季节性土壤蓄热的可行性及其特性,基于多孔介质传热传质及地下水渗流理论,建立了考虑地下水渗流与热湿迁移影响的准三维U形埋管土壤蓄热的数学模型.基于对模型的数值求解,探讨了间歇蓄热运行模式及地下水渗流对U形埋管土壤蓄热特性的影响,结果显示:间歇蓄热方式有利于土壤温度的恢复,从而可提高蓄热效率; 同时,地下水渗流的存在可以强化地下埋管的换热效果,但不利于用埋管作为蓄热装置.实验验证表明,埋管日平均出口温度及日蓄热的计算值与实验值随时间的变化规律一致,其平均相对误差为5.6%.所建模型为U形埋管土壤蓄热及其传热特性的研究提供了理论基础.
Abstract:
In order to discuss the feasibility and characteristics of solar energy storage through the U-tubes of solar-ground source heat pump system, a quasi three-dimensional U-tube soil energy storage model, which considers the effects of the ground water advection and heat-moisture transfer, is developed based on the theory of heat and mass transfer in porous medium and ground water advection. Based on the numerical solution of the model, the effects of the intermittent energy storage mode of U-tube and ground water advection on energy storage characteristics are analyzed. The results indicate that the intermittent energy storage mode helps to resume the temperature of soil around U-tube and thus can improve the energy storage efficiency. At the same time, the existence of ground water advection can intensify heat transfer effect of U-tube, but it is unfavorable to the energy storage using U-tube. The experimental validations show that the calculated values of day-average outlet temperature of U-tube and energy storage amount agree with the corresponding experimental values, and the predicted average relative error is 5.6%. The model provides a theoretical basis for the study of characteristics of U-tube energy storage and heat transfer.

参考文献/References:

[1] Metz P D.The use of ground-coupled tanks in solar-assisted heat pump system[J]. Journal of Solar Energy Engineering,1982,104(4):366-372.
[2] 余延顺,廉乐明.寒冷地区太阳能-土壤源热泵系统运行方式的探讨[J].太阳能学报,2003,24(1):111-115.
  Yu Yanshun,Lian Leming.Approach of operation condition in solar-ground source heat pump system in cold climate[J].Acta Energiae Solaris Sinica,2003,24(1):111-115.(in Chinese)
[3] Chiasson A D,Yavuzturk C.Assessment of the viability of hybrid geothermal heat pump system with solar thermal collector[J]. ASHRAE Transactions,2003,109(2):487-500.
[4] Bi Yuehong,Guo Tingwei,Zhang Liang,et al.Solar and ground source heat pump system[J]. Applied Energy,2004,78(2):231-245.
[5] Ozgener O,Hepbasli A.Experimental performance analysis of a solar assisted ground-source heat pump greenhouse heating system[J].Energy and Buildings,2005,37(1):101-110.
[6] 杨卫波,施明恒,董华.太阳能-土壤源热泵系统联合供暖运行模式的探讨[J].暖通空调,2005,35(8):25-31.
  Yang Weibo,Shi Mingheng,Dong Hua.Combined heating mode of solar-earth source heat pump systems[J]. Journal of HV&AC,2005,35(8):25-31.(in Chinese)
[7] Yang Weibo,Shi Mingheng,Dong Hua.Numerical simulation of the performance of a solar-earth source heat pump system[J]. Applied Thermal Engineering,2006,26(18):2367-2376.
[8] 杨卫波,施明恒.基于遗传算法的太阳能-地热复合源热泵系统的优化[J].暖通空调,2007,37(2):12-17.
  Yang Weibo,Shi Mingheng.Optimization of solar-ground source heat pump systems based on genetic algorithm[J]. Journal of HV&AC,2007,37(2):12-17.(in Chinese)
[9] Gu Yian,O’Neal Denni L.Modeling the effect of backfills on U-tube ground coil performance[J].ASHRAE Transactions,1998,104(2):356-365.
[10] Chiasson Andrew D.Advances in modeling of ground-source heat pump systems[D].Stiilwater:Oklahoma State University,1999.
[11] Yuill G K,Mikler V.Analysis of the effect of induced groundwater flow on heat transfer from a vertical open-hole concentric-tube thermal well[J]. ASHRAE Transactions,1995,101(1):173-185.
[12] 孔祥言.高等渗流力学[M].合肥:中国科技大学出版社,1999.
[13] Piechowski M.Heat and mass transfer model of a ground heat exchanger:validation and sensitivity analysis[J].International Journal of Energy Research,1998,22(11):965-979.
[14] 杨卫波.太阳能-地源热泵系统的理论与实验研究[D].南京:东南大学能源与环境学院,2007.

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备注/Memo

备注/Memo:
作者简介: 杨卫波(1975—),男,博士,讲师,yangwb2004@163.com.
基金项目: 国家自然科学基金资助项目(50276013)、建设部2008年科学技术项目计划资助项目(2008-K1-26).
引文格式: 杨卫波,施明恒,陈振乾.太阳能-U形埋管土壤蓄热特性数值模拟与实验验证[J].东南大学学报:自然科学版,2008,38(4):651-656.
更新日期/Last Update: 2008-07-20