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Energies 2015, 8(12), 13378-13394; doi:10.3390/en81212365

Study on the Performance of a Ground Source Heat Pump System Assisted by Solar Thermal Storage

1
Department of Architectural Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735, Korea
2
Department of Architectural Engineering, Cheongju University, 298, Daeseong-ro, Cheongwon-gu, Cheongju 360-764, Korea
3
Department of Architecture, Cheongju University, 298, Daeseong-ro, Cheongwon-gu, Cheongju 360-764, Korea
4
Department of Architectural Engineering, Hanbat National University, San 16-1, Dukmyung-Dong, Yuseong-Gu, Daejeon 305-719, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Timothy Anderson
Received: 20 September 2015 / Revised: 4 November 2015 / Accepted: 6 November 2015 / Published: 25 November 2015
(This article belongs to the Special Issue Solar Heating & Cooling)
View Full-Text   |   Download PDF [8673 KB, uploaded 25 November 2015]   |  

Abstract

A ground source heat pump system (GSHPS) utilizes a relatively stable underground temperature to achieve energy-saving for heating and cooling in buildings. However, continuous long-term operation will reduce the soil temperature in winter, resulting in a decline in system performance. In this research, in order to improve the system performance of a GSHPS, a ground heat pump system integrated with solar thermal storage was developed. This solar-assisted ground heat pump system (SAGHPS) can both maintain the balance of the soil temperature effectively and achieve higher system performance than the conventional system. In this paper, in order to examine the characteristics of the system, a dynamic simulation was conducted under various conditions. The results of our case study provide specific operation data such as heat exchange rate, heat source temperature, and heat pump COP. As a result, the heat pump COP of SAGHPS was 4.7%, 9.3% higher than that of the GSHPS. View Full-Text
Keywords: solar thermal storage; ground source heat pump system; simulation; case study; LCC solar thermal storage; ground source heat pump system; simulation; case study; LCC
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nam, Y.J.; Gao, X.Y.; Yoon, S.H.; Lee, K.H. Study on the Performance of a Ground Source Heat Pump System Assisted by Solar Thermal Storage. Energies 2015, 8, 13378-13394.

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