Seasonal Underground Storage of SGSHP System Design Based on Equilibrium Geothermal Temperature

Abstract:

Constant geothermal temperature is necessary to the long-term efficient operation of the ground source heat pump. SGSHP (Solar-Ground Source Heat Pump) system adopts solar energy as assistant heat source to maintain the geothermal temperature in cold regions. A design method based on equilibrium geothermal temperature was illustrated with an example of a villa in Beijing, China. Flowchart and control strategy of the combined system were introduced. Average heat collection efficiency and necessary area of the solar collector were derived on the basis of energy balance equation. Geothermal temperature variation was also researched to test if the solar energy and geothermal energy were reasonably matched. Results show that the combined system can maintain a constant geothermal temperature if it is well designed. The solar-ground source heat pump system is efficient, reliable and energy-saving.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 864-868
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.864
• Online since: May 2012
• Authors: Tao Yu, Peng Liu, Guang Ming Chu, Yong Feng Li
• Keywords: Equilibrium Geothermal Temperature, Ground Source Heat Pump (GSHP), Heat Storage System, Solar Energy

References

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[2] Jun Zhao, Yan Chen and Xinguo Li: Front Energy Power Eng. China Vol. 2 (2008), p.298

[3] Kongkun Charoenvisal: submitted to the Virginia Polytechnic Institute and State University for the degree of Master (2008)

[4] Yanshun Yu: submitted to the Harbin Institute of Technology for the degree of Master (2001)

[5] Fangfang Zhang: submitted to Shandong Jianzhu University for the degree of Master (2010)