Contamination effects on radiant cooler

Hongyan Xu; Deping Dong; Rongjian Xie

doi:10.1117/12.868761

4 November 2010 Contamination effects on radiant cooler

Hongyan Xu, Deping Dong, Rongjian Xie

Proceedings Volume 7854, Infrared, Millimeter Wave, and Terahertz Technologies; 78542G (2010) https://doi.org/10.1117/12.868761
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The radiant cooler is used to cool optics and detectors to reduce signal noise in infrared (IR) telescopes. In-orbit radiant cooler could be contaminated by excessive molecular, particulate and outgassing. The contamination can change the emittance, solar absorptance and scattering of the surface of optical reflector and earth shield. The paper calculates the effection of contamination on the thermal properties of radiant cooler. The working performance degrades a lot when the optical screens are contaminated. Anti-contamination is emphasized for the radiant cooler through design, manufacture, tests and flight procedure for quantitative applications of remote sensing data. Low outgassing materials, reasonable outgassing channels and outgassing heaters are applied to the radiant cooler to reduce the potential contaminants. The flight performance of the cooler meets with the design requirements.

Citation Download Citation

Hongyan Xu, Deping Dong, and Rongjian Xie "Contamination effects on radiant cooler", Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78542G (4 November 2010); https://doi.org/10.1117/12.868761

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available