Asymmetric Conductance Thermoelectric Cooling Modules for Cryogenic Applications, Phase I

Metadata Updated: November 12, 2020

Thermoelectric coolers (TECs) have long been noted for their compact construction, high reliability, and clean, quiet operation, and they are now widely used in consumer products. However, TECs are inefficient devices requiring large electrical currents to provide a refrigerant effect. Even modest improvements in TEC performance would vastly increase the market potential of thermoelectric cooling, expanding its role into maintaining space science instrument components at cryogenic temperatures (<90K), as well as increasing adoption in consumer appliances such as refrigerators and air conditioners. microVection has identified a means of improving the efficiencies of TECs with minor design and fabrication changes. This involves shifting the peak temperature location through modification of the conductance in a simple and controlled manner. This was demonstrated first analytically and then by using a small cell of 3 couples (6 legs), and the results showed a significant (~30%) increase in the temperature differential of the cell at no heat load. The simplicity of the concept suggests that it offers a near-term, affordable cooling solution that can take advantage of both advanced materials and reductions in scale to improve temperature differentials by as much as 30%. Conversely, the same temperature differential can be achieved at lower input power levels, or at higher cold-side heat fluxes, with input power being reduced by as much as 60%. The overarching goal of the proposed effort is to bring high-performance thermoelectric cooling technology to a maturity suitable for the space science and commercial marketplaces, and to demonstrate analytically and experimentally that asymmetric conductance TEC designs offer significant advantages over conventional thermoelectric devices. The specific objective of the Phase I is to show that asymmetric conductance thermoelectric devices offer near-term improvements to thermoelectric coolers in high current design scenarios.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
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Identifier TECHPORT_93385
Data First Published 2017-12-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Homepage URL https://techport.nasa.gov/view/93385
Program Code 026:027
Source Datajson Identifier True
Source Hash 2ee736a537db731f88bc12f43e4a0e7782f7f0d1
Source Schema Version 1.1

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