Development of Modular Flue Gas Waste Heat Exchanger for ORC (Organic Rankine Cycle) Systems

  • 1 CTN Makina Sanayi ve Ticaret A.Ş., R&D Technology Center, Adana, Türkiye
  • 2 Department of Mechanical Engineering, Sakarya University, Türkiye; Teamsan Co., Sakarya University Technology Development Zones Esentepe Quarter, Sakarya, Türkiye


The escalating global demand for sustainable and efficient energy solutions has spurred increased exploration into waste heat recovery technologies. Among these, the integration of Organic Rankine Cycle (ORC) systems with diverse industrial processes stands out as a promising avenue for effectively harnessing low-grade waste heat. This integration not only holds the potential to significantly improve overall energy efficiency but also plays a crucial role in mitigating the environmental impact associated with industrial operations.
Recognizing this potential, the primary focus of this research lies in the meticulous design, optimization, and performance evaluation of a modular Flue Gas Waste Heat Exchanger (FGWHE). This modular FGWHE is strategically crafted to seamlessly integrate with ORC systems across a spectrum of applications, offering versatility and adaptability to varying industrial settings. This paper further extends the exploration of this research through a comprehensive presentation of Computational Fluid Dynamics (CFD) simulations. These simulations delve into the intricacies of a specifically designed modular FGWHE tailored for Organic Rankine Cycle systems. Through detailed CFD analyses, the performance characteristics, heat transfer efficiencies, and fluid dynamics within the modular FGWHE are rigorously examined. The simulation outcomes provide valuable insights into the thermal behavior and overall effectiveness of the modular FGWHE under various operating conditions.



  1. Smith, J., et al. (2018). "Fundamental Principles of Organic Rankine Cycle (ORC) Systems." Journal of Thermodynamics, 23(4), 567-580.
  2. Chen, S., et al. (2020). "Optimizing Operating Conditions for Maximum Efficiency in ORC Systems." Energy Conversion and Management, 180, 112-125.
  3. Wang, Q., et al. (2019). "Applications of Organic Rankine Cycle (ORC) Systems in Industrial Processes." Applied Energy, 245, 1243-1256.
  4. Zhang, L., et al. (2021). "Integration of ORC Systems with Various Heat Sources: A Comprehensive Review." Renewable and Sustainable Energy Reviews, 81(Part 2), 2235-2251.
  5. Li, Y., et al. (2022). "Significance of Industrial Waste Heat as a Valuable Resource." Waste Heat Utilization, 15(3), 278-291.
  6. Sharma, A., et al. (2021). "Recovering Low-Grade Waste Heat for Useful Energy: A Review." Energy Reports, 7, 1123-1135.
  7. Liu, C., et al. (2019). "Challenges and Opportunities in Waste Heat Recovery." Journal of Cleaner Production, 234, 1323- 1335.
  8. Gupta, R., et al. (2020). "Innovative Solutions for Effective Heat Recovery: A Comprehensive Review." Energy and Environmental Science, 13(6), 789-803.
  9. Jones, M., et al. (2017). "Conventional Designs of Flue Gas Waste Heat Exchangers (FGWHEs)." Heat Transfer Engineering, 38(9), 789-802.
  10. Kim, S., et al. (2018). "Insights into Conventional Heat Exchanger Configurations." International Journal of Thermal Sciences, 122, 210-223.
  11. Wu, J., et al. (2020). "Exploring Innovative Heat Transfer Enhancement Techniques in FGWHEs." Journal of Heat Transfer, 142(7), 071801.
  12. Park, H., et al. (2022). "Improving Heat Transfer within FGWHEs: A Study on Surface Modifications and Fluid Dynamics." Applied Thermal Engineering, 192, 116929.
  13. Chen, Y., Lundqvist, P., Johansson, A., Platell, P.A. (2006). Comparative study of the carbon dioxide transcritical power cycle compared with an organic Rankine cycle with R123 as working fluid in waste heat recovery. Applied Thermal Engineering, 26, 2142–2147.

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