Shape memory alloy engine for high efficiency low-temperature gradient thermal to electrical conversion

Prashant Kumar, Ravi Anant Kishore, Deepam Maurya, Colin J. Stewart, Reza Mirzaeifar, Eckhard Quandt, Shashank Priya

Research output: Contribution to journalArticle

Abstract

More than half of the energy generated worldwide is lost as unused thermal energy because of the lack of efficient methodology for harnessing the low-grade heat. Here we demonstrate that shape-memory alloy can be an effective mechanism for recovering low-grade heat. Shape memory alloys exhibit thermally induced martensite to austenite phase transformation and super-elasticity (stress-induced martensitic transformation). Employing these two characteristics, we demonstrate a thermal engine for harnessing waste energy through all modes of heat transfer: convection, conduction, and radiation. In this work, we performed material and heat transfer analysis for achieving high frequency, sustainable and efficient operation of our engine. An optimized shape memory alloy engine generated 36 W per kilogram or 234 kW of electricity per cubic meter of active material. A continuous three-day operation of several SMA engines could generate 7.2 kWh of electricity when installed on a 500 m long hot pipe network. This generated power can potentially reduce the carbon footprint by 5.1 kg of CO2 illustrating the promise of this technology for addressing climate change.

Original languageEnglish (US)
Article number113277
JournalApplied Energy
Volume251
DOIs
StatePublished - Oct 1 2019

Fingerprint

Shape memory effect
Thermal gradients
temperature gradient
engine
Engines
heat transfer
electricity
Electricity
energy
Carbon footprint
Heat convection
carbon footprint
Martensitic transformations
Thermal energy
Martensite
Climate change
Austenite
elasticity
Elasticity
pipe

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Cite this

Kumar, Prashant ; Kishore, Ravi Anant ; Maurya, Deepam ; Stewart, Colin J. ; Mirzaeifar, Reza ; Quandt, Eckhard ; Priya, Shashank. / Shape memory alloy engine for high efficiency low-temperature gradient thermal to electrical conversion. In: Applied Energy. 2019 ; Vol. 251.
@article{a021dbd466014d869d3f4c702031a4f3,
title = "Shape memory alloy engine for high efficiency low-temperature gradient thermal to electrical conversion",
abstract = "More than half of the energy generated worldwide is lost as unused thermal energy because of the lack of efficient methodology for harnessing the low-grade heat. Here we demonstrate that shape-memory alloy can be an effective mechanism for recovering low-grade heat. Shape memory alloys exhibit thermally induced martensite to austenite phase transformation and super-elasticity (stress-induced martensitic transformation). Employing these two characteristics, we demonstrate a thermal engine for harnessing waste energy through all modes of heat transfer: convection, conduction, and radiation. In this work, we performed material and heat transfer analysis for achieving high frequency, sustainable and efficient operation of our engine. An optimized shape memory alloy engine generated 36 W per kilogram or 234 kW of electricity per cubic meter of active material. A continuous three-day operation of several SMA engines could generate 7.2 kWh of electricity when installed on a 500 m long hot pipe network. This generated power can potentially reduce the carbon footprint by 5.1 kg of CO2 illustrating the promise of this technology for addressing climate change.",
author = "Prashant Kumar and Kishore, {Ravi Anant} and Deepam Maurya and Stewart, {Colin J.} and Reza Mirzaeifar and Eckhard Quandt and Shashank Priya",
year = "2019",
month = "10",
day = "1",
doi = "10.1016/j.apenergy.2019.05.080",
language = "English (US)",
volume = "251",
journal = "Applied Energy",
issn = "0306-2619",
publisher = "Elsevier BV",

}

Shape memory alloy engine for high efficiency low-temperature gradient thermal to electrical conversion. / Kumar, Prashant; Kishore, Ravi Anant; Maurya, Deepam; Stewart, Colin J.; Mirzaeifar, Reza; Quandt, Eckhard; Priya, Shashank.

In: Applied Energy, Vol. 251, 113277, 01.10.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Shape memory alloy engine for high efficiency low-temperature gradient thermal to electrical conversion

AU - Kumar, Prashant

AU - Kishore, Ravi Anant

AU - Maurya, Deepam

AU - Stewart, Colin J.

AU - Mirzaeifar, Reza

AU - Quandt, Eckhard

AU - Priya, Shashank

PY - 2019/10/1

Y1 - 2019/10/1

N2 - More than half of the energy generated worldwide is lost as unused thermal energy because of the lack of efficient methodology for harnessing the low-grade heat. Here we demonstrate that shape-memory alloy can be an effective mechanism for recovering low-grade heat. Shape memory alloys exhibit thermally induced martensite to austenite phase transformation and super-elasticity (stress-induced martensitic transformation). Employing these two characteristics, we demonstrate a thermal engine for harnessing waste energy through all modes of heat transfer: convection, conduction, and radiation. In this work, we performed material and heat transfer analysis for achieving high frequency, sustainable and efficient operation of our engine. An optimized shape memory alloy engine generated 36 W per kilogram or 234 kW of electricity per cubic meter of active material. A continuous three-day operation of several SMA engines could generate 7.2 kWh of electricity when installed on a 500 m long hot pipe network. This generated power can potentially reduce the carbon footprint by 5.1 kg of CO2 illustrating the promise of this technology for addressing climate change.

AB - More than half of the energy generated worldwide is lost as unused thermal energy because of the lack of efficient methodology for harnessing the low-grade heat. Here we demonstrate that shape-memory alloy can be an effective mechanism for recovering low-grade heat. Shape memory alloys exhibit thermally induced martensite to austenite phase transformation and super-elasticity (stress-induced martensitic transformation). Employing these two characteristics, we demonstrate a thermal engine for harnessing waste energy through all modes of heat transfer: convection, conduction, and radiation. In this work, we performed material and heat transfer analysis for achieving high frequency, sustainable and efficient operation of our engine. An optimized shape memory alloy engine generated 36 W per kilogram or 234 kW of electricity per cubic meter of active material. A continuous three-day operation of several SMA engines could generate 7.2 kWh of electricity when installed on a 500 m long hot pipe network. This generated power can potentially reduce the carbon footprint by 5.1 kg of CO2 illustrating the promise of this technology for addressing climate change.

UR - http://www.scopus.com/inward/record.url?scp=85066078091&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066078091&partnerID=8YFLogxK

U2 - 10.1016/j.apenergy.2019.05.080

DO - 10.1016/j.apenergy.2019.05.080

M3 - Article

AN - SCOPUS:85066078091

VL - 251

JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

M1 - 113277

ER -