Underground energy storage and release characteristics of ground source heat pump with seasonal energy storage

被引：0
|
作者：
Yang W. [1 ,3 ]
Chen Z. [1 ,2 ]
Shi M. [1 ]
机构：
[1] School of Energy and Environment, Southeast University
[2] International Institute for Urban Systems Engineering, Southeast University
[3] School of Energy and Power Engineering, Yangzhou University
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 05期
关键词：
Energy release; Ground heat balance; Ground heat exchanger; Ground source heat pump; Seasonal energy storage;
D O I：
10.3969/j.issn.1001-0505.2010.05.018
中图分类号：
学科分类号：
摘要：
In order to investigate the underground energy storage and release characteristics of ground source heat pump with seasonal energy storage, a quasi three-dimensional heat transfer model was developed for the underground energy storage region with vertical U-bend ground heat exchangers. The variation of soil thermal interference radius and energy storage rate with energy storage operation time and the dynamic variation law of soil temperature during a year were analyzed. The effects of soil type and heat release rate on the characteristics of energy storage and release and ground heat balance during a year were investigated. The results indicate that the soil temperature at different radius would increase during the energy storage, the thermal interference radius can increase and gradually tends to be steady with the duration of operation time. At the same time, the soil thermal diffuse radius and velocity are affected by the soil type, and the ground heat balance of a year is also affected by the load imbalance rate and soil type. The experimental validations show that the developed mathematical model can be used to simulate effectively the process of underground energy storage and release. The research results can provide a significant guiding for the optimization design and operation of ground source heat pump with seasonal energy storage.
引用
收藏
页码：973 / 978
页数：5
相关论文
共 10 条
  • [1] Sanner B., A Different Approach to Shallow Geothermal Energy-underground Thermal Energy Storage, (2001)
  • [2] Sanner B., Karytsas C., Mendrinos D., Et al., Current status of ground source heat pumps and underground thermal energy storage in Europe, Geothermics, 32, 4, pp. 579-588, (2003)
  • [3] Gao Q., Li M., Yu M., Et al., Review of development from GSHP to UTES in China and other countries, Renewable and Sustainble Energy Reviews, 13, 6-7, pp. 1383-1394, (2009)
  • [4] Wang H., Zhao J., Song Z., Central solar heating plant with seasonal storage, Solar Energy, 27, 4, pp. 27-31, (2005)
  • [5] Muraya N.K.D.L., Heffington W.M., Thermal interference of adjacent legs in vertical U-tube heat exchanger for a ground-coupled heat pump, ASHRARE Transactions, 102, 2, pp. 12-21, (1996)
  • [6] Gu Y., O'Neal Denni L., Development of an equivalent diameter expression for vertical U-tubes used in ground-coupled heat pumps, ASHRAE Transactions, 104, 2, pp. 347-355, (1998)
  • [7] Chiasson Andrew D., Advances in modeling of ground-source heat pump systems, (1999)
  • [8] (1995)
  • [9] (2001)
  • [10] (2007)
1