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Optimizing solar-assisted industrial heating and cooling system for cost-effective installation

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Abstract
Integrating solar thermal collectors into industrial processes could be a viable way to replace the use of conventional fuels and achieve economic and environmental goals. However, there is a need to consider the detailed dynamic operation of a system with storage on a systematic control scale to fully optimize realistic system performance under variable conditions by minimizing excess energy production and maximizing annual lifecycle cost savings. In this study, we developed a TRNSYS-based dynamic statistical optimization model and evaluated FPC-based solar-assisted heating systems to develop a cost-effective system design for two industries: MOHA soft drinks and Sheba leather factories in the Tigray region, Ethiopia. Three operating loads were compared: process heat, utility heat, and utility heat and chilled water. The optimized designs resulted in significant annual life-cycle cost savings, high solar fractions, and a good margin on temperature trends where solar collector size has a greater impact. Annual cost savings per unit area of solar collector for process and utility heat were in the range of $51-90/m2 for a collector mass flow rate and storage volume of 0.01-0.02 m3/h-m2 and 0.04-0.08 m3/m2, respectively. For the utility heat and chilled water loads, the values were $49/m2 for a mass flow rate of 0.04 m3/h-m2 and a storage volume of 0.07 m3/m2. Thus, the study supports the transient analysis of solar-assisted industrial heat. The case studies have shown that the method provides optimal solutions for the use of solar thermal energy. As investment and financial sourcing remain a priority challenge, the model and case study results could help in decision-making for similar and other production capacities, regions, industries, and solar technologies.
Keywords
Industrial and Manufacturing Engineering, Energy Engineering and Power Technology, Solar thermal, Industry, Optimization, TRNSYS, Ethiopia, EVACUATED TUBE COLLECTOR, DESIGN OPTIMIZATION, ENERGY-PERFORMANCE, TEMPERATURE

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Citation

Please use this url to cite or link to this publication:

MLA
Hiben, Yacob, et al. “Optimizing Solar-Assisted Industrial Heating and Cooling System for Cost-Effective Installation.” APPLIED THERMAL ENGINEERING, vol. 230, no. Part B, 2023, doi:10.1016/j.applthermaleng.2023.120778.
APA
Hiben, Y., Bayray, M., & Lauwaert, J. (2023). Optimizing solar-assisted industrial heating and cooling system for cost-effective installation. APPLIED THERMAL ENGINEERING, 230(Part B). https://doi.org/10.1016/j.applthermaleng.2023.120778
Chicago author-date
Hiben, Yacob, Mulu Bayray, and Johan Lauwaert. 2023. “Optimizing Solar-Assisted Industrial Heating and Cooling System for Cost-Effective Installation.” APPLIED THERMAL ENGINEERING 230 (Part B). https://doi.org/10.1016/j.applthermaleng.2023.120778.
Chicago author-date (all authors)
Hiben, Yacob, Mulu Bayray, and Johan Lauwaert. 2023. “Optimizing Solar-Assisted Industrial Heating and Cooling System for Cost-Effective Installation.” APPLIED THERMAL ENGINEERING 230 (Part B). doi:10.1016/j.applthermaleng.2023.120778.
Vancouver
1.
Hiben Y, Bayray M, Lauwaert J. Optimizing solar-assisted industrial heating and cooling system for cost-effective installation. APPLIED THERMAL ENGINEERING. 2023;230(Part B).
IEEE
[1]
Y. Hiben, M. Bayray, and J. Lauwaert, “Optimizing solar-assisted industrial heating and cooling system for cost-effective installation,” APPLIED THERMAL ENGINEERING, vol. 230, no. Part B, 2023.
@article{01H18M1YS0MVJDQ2Y9EV1QJFAM,
  abstract     = {{Integrating solar thermal collectors into industrial processes could be a viable way to replace the use of conventional fuels and achieve economic and environmental goals. However, there is a need to consider the detailed dynamic operation of a system with storage on a systematic control scale to fully optimize realistic system performance under variable conditions by minimizing excess energy production and maximizing annual lifecycle cost savings. In this study, we developed a TRNSYS-based dynamic statistical optimization model and evaluated FPC-based solar-assisted heating systems to develop a cost-effective system design for two industries: MOHA soft drinks and Sheba leather factories in the Tigray region, Ethiopia. Three operating loads were compared: process heat, utility heat, and utility heat and chilled water. The optimized designs resulted in significant annual life-cycle cost savings, high solar fractions, and a good margin on temperature trends where solar collector size has a greater impact. Annual cost savings per unit area of solar collector for process and utility heat were in the range of $51-90/m2 for a collector mass flow rate and storage volume of 0.01-0.02 m3/h-m2 and 0.04-0.08 m3/m2, respectively. For the utility heat and chilled water loads, the values were $49/m2 for a mass flow rate of 0.04 m3/h-m2 and a storage volume of 0.07 m3/m2. Thus, the study supports the transient analysis of solar-assisted industrial heat. The case studies have shown that the method provides optimal solutions for the use of solar thermal energy. As investment and financial sourcing remain a priority challenge, the model and case study results could help in decision-making for similar and other production capacities, regions, industries, and solar technologies.}},
  articleno    = {{120778}},
  author       = {{Hiben, Yacob and Bayray, Mulu and Lauwaert, Johan}},
  issn         = {{1359-4311}},
  journal      = {{APPLIED THERMAL ENGINEERING}},
  keywords     = {{Industrial and Manufacturing Engineering,Energy Engineering and Power Technology,Solar thermal,Industry,Optimization,TRNSYS,Ethiopia,EVACUATED TUBE COLLECTOR,DESIGN OPTIMIZATION,ENERGY-PERFORMANCE,TEMPERATURE}},
  language     = {{eng}},
  number       = {{Part B}},
  pages        = {{18}},
  title        = {{Optimizing solar-assisted industrial heating and cooling system for cost-effective installation}},
  url          = {{http://doi.org/10.1016/j.applthermaleng.2023.120778}},
  volume       = {{230}},
  year         = {{2023}},
}

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