Sign in Subscribe
Energy industries

Harnessing Low-Temperature Waste Heat for Sustainable Energy

Strategic Insights

— 1 min read

Research conducted at the Indian Institute for Technology has identified the potential of low-temperature waste heat in advancing sustainable energy solutions. By integrating a proton exchange membrane fuel cell (PEMFC) with a dual-stage thermoelectric generator (TEG), researchers have successfully recovered and converted low-temperature waste heat into usable power, enhancing net-energy performance and contributing to more sustainable energy systems. The study's findings have significant implications for the optimization of energy systems and the reduction of greenhouse gas emissions.

Key Takeaways:

  • The integration of PEMFC and TEG enables efficient recovery and conversion of low-temperature waste heat into useable power, enhancing net-energy performance.
  • A comprehensive mathematical model of the standalone system and hybrid system has been developed using MATLAB to evaluate its thermodynamic and operational performance.
  • The fuel cell generates 23.34W of power at 22A current and 353K (80 degrees C).
  • When waste heat is utilized in the hybrid system, the output increases to 28.4W, boosting overall efficiency from 59.37% to 60.43% and enhancing sustainability performance.
  • The use of an energy-exergy and sustainability approach provides insights into system parameters and their performance.
  • The standalone system and hybrid system have been developed and implemented using a parametric and thermodynamic analysis.

Statistics:

  • 23.34W of power generated by the fuel cell at 22A current and 353K (80 degrees C).
  • 28.4W of output generated by the hybrid system, representing a 21% increase in efficiency.
  • 59.37% efficiency of the standalone system.
  • 60.43% efficiency of the hybrid system.
  • 80 degrees C (353K) operating temperature of the fuel cell.
  • 22A current generated by the fuel cell.

Sources:

  • Vertical News, "New Study on Sustainability Research - Sustainable Energy" (October 17, 2025).
  • International Journal of Hydrogen Energy, "Waste Heat Recovery and Performance Assessment of Low Temperature Fuel Cell Integrated With Thermoelectric Generator" (2025; 175).
  • NewsRx, "Investigators from Indian Institute for Technology Have Reported New Data on Sustainable Energy" (October 17, 2025).

Read more