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Optimization of hydrogen production and system efficiency enhancement through exhaust heat utilization in hydrogen-enriched internal combustion engine

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  • Shahid, Muhammad Ihsan
  • Farhan, Muhammad
  • Rao, Anas
  • Salam, Hamza Ahmad
  • Chen, Tianhao
  • Xiao, Qiuhong
  • Li, Xin
  • Ma, Fanhua

Abstract

The increasing fuel prices driven by the depletion of fossil fuel reserves have sparked renewed interest in methods to enhance the thermal efficiency of engines. One promising approach to improving system efficiency is converting engine waste heat into a more useful form of energy. This study uses exhaust heat to investigate hydrogen production and improve overall system efficiency in hydrogen-enriched compressed natural gas (HCNG) engines. The experiment analyzes the exhaust heat at hydrogen ratios of 20 %, EGR (Exhaust gas recirculation) ratios of 20 %, engine load at 75 %, and speed at 1200 rpm under stoichiometric conditions. The objective is to produce hydrogen via the steam methane reforming (SMR) method using ASPEN Plus software. The heat duties of the heat exchangers and reformer components in the SMR process were also evaluated. At the specified operating conditions, the engine's exhaust reached a maximum temperature of 974 K, with an exhaust mass flow rate of 0.1640 kg/s and an available exhaust heat of 134 kW. The hydrogen production rate increased by 23.31 % by rising reformer temperature from 973K to 1273K. Hydrogen was produced at a rate of 5.62 kg/h, with a steam temperature of 873 K and a reformer temperature of 1273 K, utilizing an additional heat duty of 72 kW for the reformer. The engine efficiency under these conditions was 36.44 %, while the overall system efficiency reached 62.23 % after hydrogen production.

Suggested Citation

  • Shahid, Muhammad Ihsan & Farhan, Muhammad & Rao, Anas & Salam, Hamza Ahmad & Chen, Tianhao & Xiao, Qiuhong & Li, Xin & Ma, Fanhua, 2025. "Optimization of hydrogen production and system efficiency enhancement through exhaust heat utilization in hydrogen-enriched internal combustion engine," Energy, Elsevier, vol. 319(C).
    • Handle: RePEc:eee:energy:v:319:y:2025:i:c:s0360544225006930
    DOI: 10.1016/j.energy.2025.135051
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    References listed on IDEAS

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    1. Coskun, C. & Oktay, Z. & Ilten, N., 2009. "A new approach for simplifying the calculation of flue gas specific heat and specific exergy value depending on fuel composition," Energy, Elsevier, vol. 34(11), pages 1898-1902.
    2. Farhan, Muhammad & Chen, Tianhao & Rao, Anas & Shahid, Muhammad Ihsan & Liu, Yongzheng & Ma, Fanhua, 2024. "Comparative knock analysis of HCNG fueled spark ignition engine using different heat transfer models and prediction of knock intensity by artificial neural network fitting tool," Energy, Elsevier, vol. 304(C).
    3. Pashchenko, Dmitry & Mustafin, Ravil & Karpilov, Igor, 2022. "Thermochemical recuperation by steam methane reforming as an efficient alternative to steam injection in the gas turbines," Energy, Elsevier, vol. 258(C).
    4. Pashchenko, Dmitry, 2018. "First law energy analysis of thermochemical waste-heat recuperation by steam methane reforming," Energy, Elsevier, vol. 143(C), pages 478-487.
    5. Popov, S.K. & Svistunov, I.N. & Garyaev, A.B. & Serikov, E.A. & Temyrkanova, E.K., 2017. "The use of thermochemical recuperation in an industrial plant," Energy, Elsevier, vol. 127(C), pages 44-51.
    6. Katebah, Mary & Abousrafa, Aya & Al-Rawashdeh, Ma'moun & Linke, Patrick, 2022. "Hydrogen production using piston reactor technology: Process design and integration for CO2 emission reduction," Energy, Elsevier, vol. 259(C).
    7. Farhan, Muhammad & Chen, Tianhao & Rao, Anas & Shahid, Muhammad Ihsan & Xiao, Qiuhong & Salam, Hamza Ahmad & Ma, Fanhua, 2024. "An experimental study of knock analysis of HCNG fueled SI engine by different methods and prediction of knock intensity by particle swarm optimization-support vector machine," Energy, Elsevier, vol. 309(C).
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