VCHP Radiators for Lunar and Martian Environments

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,796.00
Award Year:
2008
Program:
SBIR
Phase:
Phase I
Contract:
NNX08CC11P
Agency Tracking Number:
075522
Solicitation Year:
2007
Solicitation Topic Code:
X11.01
Solicitation Number:
n/a
Small Business Information
Advanced Cooling Technologies, Inc.
1046 New Holland Avenue, Lancaster, PA, 17601-5688
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
126288336
Principal Investigator:
William Anderson
Principal Investigator
(717) 295-6104
bill.anderson@1-ACT.com
Business Contact:
Jon Zuo
President
(717) 295-6058
jon.zuo@1-ACT.com
Research Institution:
n/a
Abstract
Long-term Lunar and Martian systems present challenges to thermal control systems, including changes in thermal load, and large changes in the thermal environment between Lunar (or Martian) day and night. The Lunar thermal environment typically includes long periods in extremely cold thermal environments. A variable conductance heat pipe (VCHP) radiator will be developed that passively accommodates the changing thermal load and environment. In a VCHP, a non-condensable gas is added that blocks a portion of the condenser. The gas charge blocks more of the condenser as the heat pipe evaporator temperature changes. This allows the heat pipe evaporators (and any attached heat exchanger) to remain at an almost constant temperature. In addition to passively controlling the thermal load, the gas allows the fluid in the heat pipe to freeze in a controlled fashion as the heat pipe is shut down, avoiding damage. In addition, the gas in the VCHP will help with start-up from a frozen condition.

* information listed above is at the time of submission.

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