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VCHP Radiators for Lunar and Martian Environments

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2008 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Advanced Cooling Technologies
1046 New Holland Ave. Lancaster, PA 17601-5606
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2008
Title: VCHP Radiators for Lunar and Martian Environments
Agency: NASA
Contract: NNX08CC11P
Award Amount: $99,796.00


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.

Principal Investigator:

William G. Anderson
Principal Investigator

Business Contact:

Jon Zuo
Small Business Information at Submission:

Advanced Cooling Technologies, Inc.
1046 New Holland Avenue Lancaster, PA 17601

EIN/Tax ID: 571146896
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No