Review of Liquid-Based Systems to Recover Low-Grade Waste Heat for Electrical Energy Generation

Chun Cheng, Yawen Dai, Jie Yu, Chang Liu, Sijia Wang, Shien Ping Feng, Meng Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)


A large amount of low-grade waste heat from industry is usually discarded. In order to recover the huge amount of waste heat for a sustainable society, extensive efforts have been made to develop high-performance and low-cost thermoelectric generators based on the Seebeck effect of solid semiconductors. In addition, liquid-based heat-to-electricity systems have been developed and demonstrated a good potential for practical applications. This Review aims to provide an overview of the newly developed liquid-based technologies for waste heat recovery, including thermo-electrochemical cells (TECs), thermally regenerative electrochemical cycles (TRECs), and thermo-osmotic energy conversion (TOEC) systems. The working principles of these technologies will be introduced, and the key factors affecting their performance will be discussed. A perspective to discuss the current challenges and application potential of each system and future research directions will be provided.

Original languageEnglish
Pages (from-to)161-175
Number of pages15
JournalEnergy and Fuels
Issue number1
Publication statusPublished - 7 Jan 2021

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology


Dive into the research topics of 'Review of Liquid-Based Systems to Recover Low-Grade Waste Heat for Electrical Energy Generation'. Together they form a unique fingerprint.

Cite this