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2023 Vol.17, Issue 4

Research Article

Simulation Analysis of Waste Heat Recovery Effects from Fuel Cells for District Heating Networks

지역난방 시스템과 연계한 연료전지 폐열 회수 효과 분석

Jin-A Jeong1
,
In-Su Kim2
,
Kyu-Chan Cho2
,
Eui-Jong Kim3*
정 진아1
,
김 인수2
,
조 규찬2
,
김 의종3*
1Master Student, Department of Architectural Engineering, Inha University, Incheon, Korea
2Undergraduate Student, Department of Architectural Engineering, Inha University, Incheon, Korea
3Associate Professor, Department of Architectural Engineering, Inha University, Incheon, Korea
1인하대학교 대학원 건축공학과 석사과정
2인하대학교 건축학부 건축공학전공 학부연구생
3인하대학교 건축공학과 부교수
*Corresponding Author
30 August 2023. pp. 167-180
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Abstract

This study proposes a district heating network that uses the existing 3rd generation district heating but modifies the configuration of heat exchangers to enable a low temperature network in the second loop. By lowering the supply temperature, the system can increase the use of renewable energy such as fuel cells. The study aims to quantitatively calculate the effectiveness of the proposed method through simulation. Results show that the proposed district heating system decreases the source-side total flow rates compared to the existing 3rd generation district heating. In addition, installation of fuel cells in the proposed model can reduce energy consumption by 23% with 10% of the capacity of the whole district heating system. The proposed model has the potential to induce efficiency improvement of the entire district heating system, reduce energy loss of the long-distance heat pipe network, and increase the efficiency of the heat supply facility.

Keywords
지역난방
신재생에너지
연료전지
트랜시스
키워드
district heating
renewable energy
fuel cell
TRNSYS
References
1
Cha, K.S., Kim, H.S. (2014). A study on monitoring energy performance of 1kW Proton Exchange Membrane Fuel Cell in case of proof applied to house units. Journal of KIAEBS, 8(5), 269-274.
2
Cho, S.H., Hong, S.K., Lee, S.J. (2015). Actual Energy Consumption Analysis on Temperature Control Strategies (Set-point Control, Outdoor Temperature Reset Control and Outdoor Temperature Predictive Control) of Secondary Side Hot Water of District Heating System. Korean Journal of Air-Conditioning and Refrigeration Engineering, 27(3), 137-145. 10.6110/KJACR.2015.27.3.137
3
Kwag, H.J., Song, H.W., Yun. S.P., Han, S.H. (2021). Transition to the 4th Low Temperature District Heating Systems in SEOUL District Heating System. Transactions of the Korean Society of Mechanical Engineers, 45(12), 691-699. 10.3795/KSME-B.2021.45.12.691
4
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5
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6
Yeom, G.H., Lee, C.U., Jung, D.E., Do, S.L. (2020). Determination of Optimal Set-point Temperature with Load Dissatisfaction and Energy Consumptions for Outdoor Temperature Reset Control of Heating Supply Systems in Apartment Buildings. Korean Journal of Air-Conditioning and Refrigeration Engineering, 32(4), 179-190. 10.6110/KJACR.2020.32.4.179
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8
Yoon, S.M., Kim, J.H., Kim, Y.K, Min, K.C., Yi, J.Y. (2019). Thermal Load and Heat Supply Analysis for Building District Heating-Renewable Energy Hybrid Heat Supply System. Conference of the Korean Journal of Air-Conditioning and Refrigeration Engineering, 224-227.
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 17
  • No :4
  • Pages :167-180
  • Received Date : 2023-03-29
  • Revised Date : 2023-07-31
  • Accepted Date : 2023-08-01
  • DOI :https://doi.org/10.22696/jkiaebs.20230014
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