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Energies 2015, 8(9), 9320-9343; doi:10.3390/en8099320

Development of the Hybrid Operation Method of a Multi-Geothermal Heat Pump System and Absorption Chiller-Heater

1
Department of Architectural Engineering, Graduate School of Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
2
Department of Architectural Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon 22212, Korea
3
Division of Architecture and Urban Planning, Incheon national University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea
4
School of Architecture, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Hossam A. Gabbar (Gaber)
Received: 8 June 2015 / Revised: 5 August 2015 / Accepted: 6 August 2015 / Published: 31 August 2015
(This article belongs to the Special Issue Energy Conservation in Infrastructures)
View Full-Text   |   Download PDF [3921 KB, uploaded 31 August 2015]   |  

Abstract

Considerable efforts have been made to reduce the energy consumption of buildings due to the energy crisis, and, the Korean government has supported the use of renewable energy through various grants. Among the possible renewable energy sources, geothermal energy can be used regardless of the outside weather. Therefore, energy consumption can be reduced considerably in summer and winter. Despite the increasing use of renewable energy, the use of renewables has not been operating appropriately. Therefore, this study examined some of the problems of the operation of renewable energy and some possible improvements. The aim of the study is to evaluate a building containing an actual installed multi-geothermal heat pump (Multi-GHP) system, in terms of the energy efficiency. In addition, this study evaluated the present control system and the method of complex operation regarding existing heat sources systems and GHP systems through a simulation. The results can be regarded as the result of a hybrid operation method for the improvement of an existing operation. Therefore, the Multi-GHP system energy use of a hybrid operation condition of the Multi-GHP systems and the absorption (ABS) chiller-heater system was reduced compared to the operation condition of the Multi-GHP system, and the total energy consumption of the heat source equipment was reduced. The proposed operation plan was evaluated after applying the system to a building. These results showed that the efficient operation of a Multi-GHP hybrid operation method is possible. As a result, the GHP energy use of Multi-GHP systems and the ABS chiller-heater system was reduced by 30% compared to existing operation and the total energy consumption of heat source equipment was reduced by 78%. View Full-Text
Keywords: renewable energy; multi-geothermal heat pump (Multi-GHP) system; building energy; transient system simulation program (TRNSYS); hybrid operation; absorption (ABS) chiller-heater renewable energy; multi-geothermal heat pump (Multi-GHP) system; building energy; transient system simulation program (TRNSYS); hybrid operation; absorption (ABS) chiller-heater
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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

Jung, Y.-J.; Kim, H.-J.; Shin, K.-J.; Jo, J.-H.; Kim, Y.-S.; Cho, Y.-H. Development of the Hybrid Operation Method of a Multi-Geothermal Heat Pump System and Absorption Chiller-Heater. Energies 2015, 8, 9320-9343.

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