Ultra-efficient Thermoelectric Cooling Module for Satellite Thermal Management

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9453-14-M-0050
Agency Tracking Number: F131-074-1553
Amount: $149,959.00
Phase: Phase I
Program: SBIR
Awards Year: 2014
Solitcitation Year: 2013
Solitcitation Topic Code: AF131-074
Solitcitation Number: 2013.1
Small Business Information
Sheetak Inc.
4020 S. Industrial Drive, Suite 100, Austin, TX, 78744-
Duns: 004648989
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Uttam Ghoshal
 CEO/CTO
 (512) 413-8955
 ghoshal@sheetak.com
Business Contact
 Himanshu Pokharna
Title: Vice President Business Development
Phone: (408) 464-8007
Email: pokharna@sheetak.com
Research Institution
N/A
Abstract
ABSTRACT: Current waste heat management technologies from satellite payload including the sensor, control and actuators, are bulky and energy inefficient because they cannot provide on-demand site-specific cooling. Fluidic systems are not desirable for satellite applications due to leakage issues. High ZT thin film thermoelectric (TFTE) devices have the potential to overcome all these issues. However, earlier attempts to integrate these TFTE devices have shown poor system performance due to suboptimal heat flux management and integration issues such as high contact resistances. Sheetak proposes to develop a TFTE module based on its nanostructured high ZT TE material and hemispherical distributed devices. Implementing a large thin film device in terms of an array of small hemispherical devices with constricted contacts can lead to a 30-fold reduction in temperature drop in the underlying substrate compared to the large thin film device. Sheetak will demonstrate high efficiency on-demand and site specific cooling with system level ZT>1 which has never been demonstrated before for waste heat management from electronics/optoelectronics devices. The goal of this SBIR is to develop an actual satellite payload waste heat management system with hotspot heat flux>200 W/cm2, hotspot temperature<76 C and component power>50 W. BENEFIT: Higher performance computers, Improvement in sensors, actuators, communication hardware. Also, the technology can be used to generate power for the onboard electronics on a satellite. In general, the proposed technology can be used for refrigeration, heat pumping and waste heat to electricity generation

* information listed above is at the time of submission.

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