NASA SBIR 2005 Solicitation

FORM B - PROPOSAL SUMMARY


PROPOSAL NUMBER:05 S6.07-8373
SUBTOPIC TITLE:Thermal Control for Instruments
PROPOSAL TITLE:Miniature Loop Heat Pipe with Multiple Evaporators and Multiple Condensers

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
TTH Research
14300 Cherry Lane Ct., Suite 215
Laurel ,MD 20707 - 4990
(301) 490 - 1800

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Triem T. Hoang
thoang@tthresearch.com
14300 Cherry Lane Ct., Suite 215
Laurel, MD  20707 -4990
(301) 641 - 2954

TECHNICAL ABSTRACT (LIMIT 200 WORDS)
Cooling electronic components in the space environment still remains a challenge for thermal engineers. In the current
design practice, copper straps are used to transfer the waste heat from various high-power dissipating components to
the side walls of the electronic box. Another heat transport device then collects the waste heat from the box mounting
plate and carries it the space radiators for rejection. As the heat load of next generation electronics increases at a very
fast rate, a more efficient heat transfer mechanism at the box level must be developed. Loop Heat Pipes (LHP) become
popular heat transport devices for space-based thermal control systems for they are highly reliable and maintenancefree.
Almost all LHPs in service at the present time contain one capillary pump. Thus one LHP provides only a "single
point" heat acquisition. In addition, when redundancy is required for the mission long lifetime, many LHPs are
therefore needed to provide adequate cooling for the electronic components. Miniature LHPs with multiple evaporators
and multiple condensers will solve the aforementioned cooling problem without complicating the integration process.

POTENTIAL NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
With its operational reliability and robustness, the proposed miniature LHP system is perfect for space-based thermal
control at the electronic box level. In addition, it can be used in applications such as high-power electronic cooling or
even in personal protection equipment (helmets, clothing).

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
Terrestrial applications include: cooling of sport gears (shoes, ski jackets) and firefighters' protective clothing, laptop
computer thermal management.

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

TECHNOLOGY TAXONOMY MAPPING
Cooling
Instrumentation


Form Printed on 09-19-05 13:12