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Energies 2014, 7(8), 4781-4801; doi:10.3390/en7084781

The Potential and Utilization of Unused Energy Sources for Large-Scale Horticulture Facility Applications under Korean Climatic Conditions

1
Department of Architectural Engineering, Hanbat National University, San 16-1, Dukmyung-Dong, Yuseong-Gu, Daejeon 305-719, Korea
2
Department of Architectural Engineering, Cheongju University, 298, Daesungro, Sangdang-Gu, Cheongju 360-764, Korea
*
Author to whom correspondence should be addressed.
Received: 7 May 2014 / Revised: 12 June 2014 / Accepted: 16 July 2014 / Published: 24 July 2014
(This article belongs to the Special Issue Renewable Energy for Agriculture)
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Abstract

As the use of fossil fuel has increased, not only in construction, but also in agriculture due to the drastic industrial development in recent times, the problems of heating costs and global warming are getting worse. Therefore, introduction of more reliable and environmentally-friendly alternative energy sources has become urgent and the same trend is found in large-scale horticulture facilities. In this study, among many alternative energy sources, we investigated the reserves and the potential of various different unused energy sources which have infinite potential, but are nowadays wasted due to limitations in their utilization. In addition, we utilized available unused energy as a heat source for a heat pump in a large-scale horticulture facility and analyzed its feasibility through EnergyPlus simulation modeling. Accordingly, the discharge flow rate from the Fan Coil Unit (FCU) in the horticulture facility, the discharge air temperature, and the return temperature were analyzed. The performance and heat consumption of each heat source were compared with those of conventional boilers. The result showed that the power load of the heat pump was decreased and thus the heat efficiency was increased as the temperature of the heat source was increased. Among the analyzed heat sources, power plant waste heat which had the highest heat source temperature consumed the least electric energy and showed the highest efficiency. View Full-Text
Keywords: unused energy sources; geothermal; sea water; river; power plant waste heat; large-scale horticulture facility unused energy sources; geothermal; sea water; river; power plant waste heat; large-scale horticulture facility
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Hyun, I.T.; Lee, J.H.; Yoon, Y.B.; Lee, K.H.; Nam, Y. The Potential and Utilization of Unused Energy Sources for Large-Scale Horticulture Facility Applications under Korean Climatic Conditions. Energies 2014, 7, 4781-4801.

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