Passive Freeze Protection for the International Space Station Photovoltaic Radiators

Due to the extreme cold conditions in space, the International Space Station (ISS) Photovoltaic Radiators (PVR) were in danger of freezing the ammonia within the fluid loops. This would be catastrophic since the pressure buildup during thaw could potentially break the fluid flow lines. Design changes needed to be made to the radiators to insure their worthiness. Freeze tolerant flow tubes, optical coating changes to the manifold covers, multilayer insulation (MLI) around the fluid lines, and thermal isolation of manifold covers by mesh screen isolators are being combined to achieve an acceptable passive design.

• Record URL:
  • https://doi.org/10.4271/981731
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Steinfeld, David E
  • Blaser, Allen N
• Conference:
  • International Conference On Environmental Systems
  • Location: San Francisco California, United States
  • Date: 2008-6-29 to 2008-7-2
• Publication Date: 1998-7-13

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Manifolds; Radiators; Solar energy
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01792965
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 981731
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:13AM