Chapter 10 - Thermal Energy Harvesting Using Thermomagnetic Effect

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Low-grade thermal energy, either in the form of waste heat or nature heat, is available abundantly around us. Since Carnot efficiency reduces with decrease in operating temperature difference, there are very limited practical options for low-grade thermal energy conversion. Thermomagnetic effect is the effect of heat on magnetic properties of a material. This phenomenon can be used to generate electricity using either direct thermal to electrical energy conversion or indirect thermal to mechanical energy conversion. This chapter provides a broad overview of various aspects of thermomagnetic energy conversion. We first explain the working principle behind the thermomagnetic energy harvesting. We then formulate mathematical equations needed to calculate the work output and energy conversion efficiency of a thermomagnetic cycle. Based on this formulation, we provide a list of working materials that can be employed in the thermomagnetic harvesters. At last, we describe various thermomagnetic harvesters proposed in the literature.

Original languageAmerican English
Title of host publicationLow-Grade Thermal Energy Harvesting: Advances in Materials, Devices, and Emerging Applications
Subtitle of host publicationWoodhead Publishing Series in Electronic and Optical Materials
EditorsS. Wang
Number of pages20
ISBN (Electronic)9780128236901
ISBN (Print)9780128236918
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd. All rights reserved.

NREL Publication Number

  • NREL/CH-5500-78513


  • Energy harvesting
  • Gadolinium
  • Low-grade heat
  • Thermal energy
  • Thermomagnetic


Dive into the research topics of 'Chapter 10 - Thermal Energy Harvesting Using Thermomagnetic Effect'. Together they form a unique fingerprint.

Cite this