Performance Results of a High-Power-Density Thermoelectric Generator: Beyond the Couple

Crane, Doug; LaGrandeur, John; Harris, Fred R.; Bell, Lon E.

doi:10.1007/s11664-009-0674-x

Cited by 36 publications

(22 citation statements)

References 4 publications

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“…Scaling this to 10 ° C gives a power density of 3.05 × 10 5 erg/cm 3 s . A recent high power thermoelectric device [ 28 ] exhibited a measured 250 W/ = 2.5 × 10 6 erg/cm 3 s power density (not including fl uid manifolds), achieved at a temperature difference of 180 ° C. Scaling proportionately to 10 ° C, this is 1. 3 , and a predicted voltage of 502 mV with R = 10 k ohm .…”

Section: Comparison Between Theory and Experiments And Optimizationmentioning

confidence: 98%

“…Peak values of zT for the the material of best thermoelectric devices is near 1. The whole device effi ciency is often measured by ZT , also of order 1 in the best devices, [ 28 ] and the effi ciency is given by (10) where T and T max are the temperature difference and maximum temperature in a thermal cycle of the device. [ 27 ] With T = 10 K , ZT = 1 , and T = 300 K , we get an effi ciency of 0.57%.…”

Section: Comparison Between Theory and Experiments And Optimizationmentioning

confidence: 99%

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The Direct Conversion of Heat to Electricity Using Multiferroic Alloys

Srivastava

Song

Bhatti

et al. 2010

Advanced Energy Materials

170

125

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We demonstrate a new method for the direct conversion of heat to electricity using the recently discovered multiferroic alloy, Ni45Co5Mn40Sn101. This alloy undergoes a low hysteresis, reversible martensitic phase transformation from a nonmagnetic martensite phase to a strongly ferromagnetic austenite phase upon heating. When biased by a suitably placed permanent magnet, heating through the phase transformation causes a sudden increase of the magnetic moment to a large value. As a consequence of Faraday’s law of induction, this drives a current in a surrounding circuit. Theory predicts that under optimal conditions the performance compares favorably with the best thermoelectrics. Because of the low hysteresis of the alloy, a promising area of application of this concept appears to be energy conversion at small ΔT, suggesting a possible route to the conversion of the vast amounts of energy stored on earth at small temperature difference. We postulate other new methods for the direct conversion of heat to electricity suggested by the underlying theory.

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Section: Comparison Between Theory and Experiments And Optimizationmentioning

confidence: 98%

Section: Comparison Between Theory and Experiments And Optimizationmentioning

confidence: 99%

The Direct Conversion of Heat to Electricity Using Multiferroic Alloys

Srivastava

Song

Bhatti

et al. 2010

Advanced Energy Materials

170

125

View full text Add to dashboard Cite

show abstract

“…The thermoelectric power generation modules deployed on the surface of the gas tank have cool temperature at the other end due to the cooling effect of the cooling channel. Therefore, the temperature difference is formed at two ends of the thermoelectric power generation modules, allowing power output [13][14][15]. Fig.1 shows the three-dimensional model of cylindrical automobile exhaust thermoelectric generator system.…”

Section: Model Of the Cylindrical Automobile Exhaust Thermoelectric Gmentioning

confidence: 99%

Simulation Study of Cylindrical Automobile Exhaust Thermoelectric Generator System

Zhou¹

2015

IJHT

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A three-dimensional model of cylindrical automobile exhaust thermoelectric generator system is established. The fluid simulation software Fluent is employed to simulate the heat transfer performance of smooth exhaust channel and exhaust channel with fin. The influence of thickness, height and numbers of fins are studied. According to the simulation result and based on pressure drop of the channel, it is found that when the fins are 5mm in thickness, 15mm in height and 16 in number, the channel with such fins is the optimal one. The computing results provide theoretical support for designing the cylindrical automobile exhaust thermoelectric generator system dealing with automobile exhaust.

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“…1,2 In order to estimate thermal performance at the system level more effectively, the operating model was modified from a steady-state model to a transient model. This model takes into account the thermal time constants of the device.…”

Section: Device and System Modelingmentioning

confidence: 99%

“…While the long-term goal is to provide a design that is suitable for the automotive environment, a threshold of 100 cycles with no degradation in power output was established as the phase 3 and 4 prototype minimum requirement. Single-material (Bi 2 Te 3 ) TE subassembly thermal cycling was introduced in Crane et al 2 TE subassemblies for high-and mediumtemperature banks were also tested in phase 3 with no degradation in power output shown for each type of subassembly for over 100 cycles.…”

Section: Subassembly Thermal Cyclingmentioning

confidence: 99%

Progress Report on BSST-Led US Department of Energy Automotive Waste Heat Recovery Program

Crane¹,

LaGrandeur²

2009

Journal of Elec Materi

Self Cite

111

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As global consumption of energy continues to increase at an exponential rate, the need to find technologies that can help reduce this rate of consumption, particularly in passenger vehicles, is imperative. This paper provides a progress report on the BSST-led US Department of Energy-sponsored automotive thermoelectric waste heat recovery project, which has transitioned from phase 3 and is completing phase 4. Thermoelectric generator (TEG) development will be discussed, including modeling and thermal cycling of subassemblies. The design includes the division of the TEG into different temperature zones, where the subassembly materials and aspect ratios are optimized to match the temperature gradients for the particular zone. Test results for a phase 3 quarter-scale device of the phase 4 high-temperature TEG will be discussed, where power outputs of up to 125 W were achieved on a 600°C hot-air test bench. The design of the TEG, which uses high-powerdensity segmented thermoelectric elements, has evolved from a planar design in phase 3 to a cylindrical design in phase 4. The culmination of phase 4 includes testing of the generator on a dynamometer at the National Renewable Energy Laboratory with a high-performance production engine.

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Performance Results of a High-Power-Density Thermoelectric Generator: Beyond the Couple

Cited by 36 publications

References 4 publications

The Direct Conversion of Heat to Electricity Using Multiferroic Alloys

The Direct Conversion of Heat to Electricity Using Multiferroic Alloys

Simulation Study of Cylindrical Automobile Exhaust Thermoelectric Generator System

Progress Report on BSST-Led US Department of Energy Automotive Waste Heat Recovery Program

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