Thermal Model of an Absolute Solar Radiometer Designed for Future Satellite Missions
Author:
Shen, Y. J.1, Chen, and D. H.1, Zhang Z. M.1
Affiliation:
1. Department of Mechanical Engineering, University of Florida, Gainesville, FL 32611
Abstract
This paper describes a finite-element thermal model of an absolute radiometer designed for total solar irradiance (TSI) measurement in future satellite missions. The cavity-type absolute radiometer employs the electrical-substitution technique and active temperature control to determine the radiant power entering the receiving cavity. The nonequivalence between the shutter-open mode and shutter-closed mode due to different temperature distributions is a major factor that affects the radiometric accuracy. The analysis shows that the nonequivalence is a function of sensor positions and can be minimized by properly choosing the electrical heating method and the temperature sensor location.
Publisher
ASME International
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
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