If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Evaluation of Space Radiator Performance by Simulation of Infrared Emission

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

The total performance of a droplet space radiator has been predicted by simulation of infrared emission spectra. Emission spectra for a droplet are simulated with the use of exact optical theory from the optical constant spectra of a low-molecular-weight silicone, which is a candidate for use as an emission medium of the radiator. Emissive power and total emittance are calculated from the simulated emission spectra for a droplet at different temperatures. It is found that the fourth-power temperature dependence of the emissive power of the blackbody and the temperature dependence of the emissivity inherent to the materials govern the emissive power of the droplet. The progressive decreases in temperature of a droplet and a droplet sheet in space are also simulated. A droplet with a diameter of 1 μm is predicted to cool from 500 K to 252 K in two seconds. The effects of the size of a droplet and the number density of the droplets in the sheet on the cooling rate are estimated. A smaller droplet is essential for obtaining effective radiation in the liquid droplet radiator. A dense cloud of the droplet sheet will retard the cooling rate of the droplets because of the reabsorption of the emitted light.

Keywords: Emission spectra; Infrared; Space radiator; Spectral simulation

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702884428635

Affiliations: 1: Department of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106; permanent address: Government Industrial Research Institute of Osaka, Midorigaoka, Ikeda, Osaka 563, Japan 2: Department of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106

Publication date: January 1, 1988

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more