Chapter 10 - Thermal Energy Harvesting Using Thermomagnetic Effect

Kishore, Ravi Anant

doi:10.1016/B978-0-12-823690-1.00012-5

Chapter 10 - Thermal Energy Harvesting Using Thermomagnetic Effect

Book · 25 March 2022

DOI:https://doi.org/10.1016/B978-0-12-823690-1.00012-5· OSTI ID:1897998

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.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE National Renewable Energy Laboratory (NREL)

DOE Contract Number:: AC36-08GO28308

OSTI ID:: 1897998

Report Number(s):: NREL/CH-5500-78513; MainId:32430; UUID:1f34d025-92f7-4c9f-bf7f-0d48663ae2a9; MainAdminID:67773

Country of Publication:: United States

Language:: English

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Chapter 10 - Thermal Energy Harvesting Using Thermomagnetic Effect

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