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The Design and Testing of the LSSIF Advanced Thermal Control SystemThe Life Support Systems Integration Facility (LSSIF) provides a platform to design and evaluate advanced manned space systems at NASA Johnson Space Center (JSC). The LSSIF Early Human Testing Initiative requires the integration of such subsystems to enable human occupancy of the 6 meter chamber for a 90 day closed volume test. The Advanced Thermal Control System (TCS) is an important component of the integrated system by supplying coolant to the subsystems within the chamber, such as the Air Revitalization System. The TCS incorporates an advanced high efficiency, heat pump to reject waste heat from the chamber to an external sink or 'lift' temperature that emulates a Lunar environment. The heat pump is the High Lift Heat Pump, developed by Foster-Miller, Inc., and is the main test article of the TCS. The heat pump prototype utilizes a non-CFC refrigerant in a design where the thermal requirements exceed existing terrestrial technology. These operating requirements provide a unique opportunity to design and test an advanced integrated thermal system and the associated controls. The design, control, and systems integration of the heat pump and the TCS also have terrestrial technology application. This paper addresses the design of the TCS and the heat pump, along with the control scheme to fully test the heat pump. Design approaches utilized in the LSSIF TCS are promoted for implementation in terrestrial thermal systems. The results of the preliminary thermal and fluid analyses used to develop the control of the thermal systems will also be discussed. The paper includes objectives for the 90 day human test and the test setup. Finally, conclusions will be drawn and recommendations for Earth design application are submitted.
Document ID
19970001714
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Henson, Robert A.
(Lockheed Engineering and Sciences Co. Houston, TX United States)
Keller, John R.
(Lockheed Engineering and Sciences Co. Houston, TX United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1995
Subject Category
Man/System Technology And Life Support
Report/Patent Number
AIAA Paper 95-1051
NASA-TM-111797
NAS 1.15:111797
Meeting Information
Meeting: Life Sciences and Space Medicine Conference
Location: Houston, TX
Country: United States
Start Date: April 3, 1995
End Date: April 5, 1995
Accession Number
97N11488
Distribution Limits
Public
Copyright
Public Use Permitted.
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