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Development of a High Output Fluorescent Light Module for the Commercial Plant Biotechnology FacilityTo maximize the use of available resources provided onboard the International Space Station, the development of an efficient lighting 1 system is critical to the overall performance of the CPBF. Not only is it important to efficiently generate photon energy, but thermal loads on the CPBF Temperature and Humidity Control System must be minimized. By utilizing optical coatings designed to produce highly diffuse reflectance in the visible wavelengths while minimizing reflectance in the infrared region, the design of the fluorescent light module for the CPBF is optimized for maximum photon flux, spatial uniformity and energy efficiency. Since the Fluorescent Light Module must be fully enclosed to meet (ISS) requirements for containment of particulates and toxic materials, heat removal from the lights presented some unique design challenges. By using the Express Rack moderate C, temperature-cooling loop, heat is rejected by means of a liquid/air coolant manifold. Heat transfer to the manifold is performed by conduction using copper fins, by forced air convection using miniature fans, and by radiation using optically selective coatings that absorb in the infrared wavelengths. Using this combination of heat transfer mechanisms builds in redundancy to prevent thermal build up and premature bulb failure.
Document ID
20010082944
Acquisition Source
Ames Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Turner, Mark
(NASA Ames Research Center Moffett Field, CA United States)
Zhou, Wei-Jia
(NASA Ames Research Center Moffett Field, CA United States)
Doty, Laura
Date Acquired
August 20, 2013
Publication Date
January 7, 2000
Subject Category
Space Processing
Funding Number(s)
PROJECT: RTOP 493-36-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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