This work represents theoretical and experimental studies on a passively actuated bimetallic heat switch for space applications. The working principle of the heat switch is based on the differential thermal expansion of distinct metals. Analytical one-dimensional and two-dimensional heat conduction models are developed to predict the thermal resistance of the heat switch, which is a function of temperature. A non-dimensional parametric analysis is performed in order to study how the design parameters affect the total thermal resistance of the heat switch. The theoretical models are also compared with experimental data obtained from a prototype of the heat switch. The agreement between theory and experiments is good.
Theoretical and experimental studies of a bi-metallic heat switch for space applications
International Journal of Heat and Mass Transfer ; 46 , 24 ; 4573-4586
2003
14 Seiten, 21 Quellen
Aufsatz (Zeitschrift)
Englisch
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