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2018 Vol.38, Issue 5 Preview Page

Research Article

Economic Evaluation of Glass Greenhouse Heating Solar Thermal System Applied with Seasonal Borehole Thermal Energy Storage System

BTES 방식의 계간축열 시스템을 적용한 유리온실의 난방용 태양열시스템의 경제성 평가

Sang-Mi Park1
,
Tae-Beom Seo2*
박 상미1
,
서 태범2*
1Department of Mechanical Engineering, Inha University, Master’s Course
2Department of Mechanical Engineering, Inha University, Professor
1인하대학교 기계공학과, 석사과정
2인하대학교 기계공학과, 교수
*Corresponding Author 
30 October 2018. pp. 63-74
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Abstract

The heating performance of a solar thermal seasonal storage system applied to a 1,320 m2 glass greenhouse was analyzed numerically, and the economic feasibility depending upon the number of boreholes was evaluated. For this study, the gardening 16th and 19th zucchini greenhouse of Jeollanam-do agricultural research & extension services was selected. And the heating load of the glass greenhouse selected was 1,147 GJ. BTES(Borehole Thermal Energy Storage) was considered as a seasonal storage, which is relatively economical. The number of boreholes was selected from 25 to 150. The TRNSYS was used to predict and analyze the dynamic performance of the solar thermal system. Numerical simulation was performed by modelling the solar thermal seasonal storage system consisting of flat plate solar collector, BTES system, short-term storage tank, boiler, heat exchanger, pump and controller. As a result of the analysis, when the number of boreholes was from 25 to 50, the thermal efficiency of BTES system and the solar fraction was the highest. When the number of boreholes was from 25 to 50, it was analyzed that the payback period was from 5.2 years to 6.2 years. Therefore it was judged to be the number of boreholes of the proposed system was from 25 to 50, which is the most efficient and economical.

Keywords
Glass Greenhouse
Borehole Thermal Energy Storage
Transient System Simulation
Solar Thermal Seasonal Storage System

키워드
유리온실
BTES
TRNSYS
태양열 계간축열 시스템
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 38
  • No :5
  • Pages :63-74
  • Received Date : 2018-10-02
  • Revised Date : 2018-10-15
  • Accepted Date : 2018-10-16
  • DOI :https://doi.org/10.7836/kses.2018.38.5.063
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