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2025 Vol.45, Issue 6 Preview Page

Research Article

Solar Integrated Heat Supply and Smart O&M System for Industrial Process Heat Supply

산업공정용 열공급을 위한 태양열 융합 열공급 및 스마트 O&M 시스템

DeokGeun Kim1
,
YoonSu Kim2
,
YongSoo Yoon2
,
HiKi Hong3
,
JaeMan Song3*
김 덕근1
,
김 윤수2
,
윤 용수2
,
홍 희기3
,
송 재만3*
1Graduate Student, Department of Mechanical Engineering, Kyung Hee University
2Researcher, Department of Mechanical Engineering, Kyung Hee University
3Professor, Department of Mechanical Engineering, Kyung Hee University
1경희대학교 기계공학과, 석사과정
2경희대학교 기계공학과, 연구원
3경희대학교 기계공학과, 교수
*Corresponding Author
30 December 2025. pp. 93-105
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Abstract

Solar heat pump hybrid systems must operate stably and their performance must be managed to meet the medium- and low-temperature thermal demands of industrial processes using renewable energy. However, solar thermal systems may experience heat source temperatures and failures due to solar radiation fluctuations and equipment aging, necessitating real-time monitoring-based operation and maintenance systems. In this study, a monitoring system for measuring, storing energy, and analyzing solar thermal heat pump hybrid systems in industrial processes in real-time was developed by applying an RS485-based controller and a Python data processing environment. The solar thermal energy storage (STES) was stably maintained within the 40 – 65°C range, and the high-temperature thermal energy storage (HTES) remained within the 70 – 80°C range. The daily performance was analyzed, indicating a system coefficient of performance (SCOP) of 1.9 – 2.1. The renewable fraction (RF) averaged 77%, and the solar fraction (SF) averaged 43%, confirming that 84.3% of the total heat load was covered by renewable energy. The auxiliary boiler heat source covered 15.7% of the total heat load, substantially reducing the dependency on fossil fuels. The established monitoring system is configured to reliably collect key data in 10-second intervals and automatically calculate performance indicators, accurately capturing the operational status. The RS485-Python based architecture facilitates future sensor expansion and field implementation. These results provide foundational data for increasing the operational reliability of the processes of industrial renewable energy heat supply systems and establishing smart operation and maintenance (O&M) frameworks.

Keywords
Solar thermal
Industrial process
Heat pump
Thermal energy supply system
Energy independence
키워드
태양열
산업공정
히트펌프
열공급시스템
에너지 자립
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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 : 45
  • No :6
  • Pages :93-105
  • Received Date : 2025-11-03
  • Revised Date : 2025-12-08
  • Accepted Date : 2025-12-08
  • DOI :https://doi.org/10.7836/kses.2025.45.6.093
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