scholarly journals Numerical analysis of thermal processes in the system protective clothing - biological tissue subjected to an external heat flux

2016 ◽  
Vol 15 (2) ◽  
pp. 85-93 ◽  
Author(s):  
Bohdan Mochnacki ◽  
◽  
Mateusz Duda ◽  
Keyword(s):  
Heat Flux ◽  
Numerical Analysis ◽  
Biological Tissue ◽  
Protective Clothing ◽  
External Heat ◽  
Thermal Processes ◽  
External Heat Flux

The Application of IRAs Optimizing Design in Vacuum Thermal Test

2013 ◽  
Vol 390 ◽  
pp. 708-713
Author(s):  
Yu Wei Sun ◽  
Xiao Ning Yang
Keyword(s):  
Heat Flux ◽  
Heated Surface ◽  
Design Guidelines ◽  
External Heat ◽  
Simulation Test ◽  
Thermal Tests ◽  
Typical Structure ◽  
Infra Red ◽  
Optimizing Design ◽  
External Heat Flux

The thermal vacuum environment simulation test is indispensible for the development of spacecrafts. And the simulation of the external heat flux exerted onto the spacecraft is one of the determining elements of the simulation test. In China, the infra-red simulation is a common method that used as simulation equipment of the external heat flux. The planar infra-red arrays is the most typical structure elements for planar spacecraft surface, but the margin effect of infra-red arrays influences the flux uniformity on heated surface severely. Based on Monte Carlo theory, some optimizing design guidelines had been drawn about planar infra-red arrays in past investigation. This paper introduces some testing and experiment that could confirm these guidelines, and these guidelines had been applied in some vacuum thermal tests of spacecrafts successfully.

Experimental study of commercial flame-retardant polycarbonate under external heat flux

2017 ◽  
Vol 131 (2) ◽  
pp. 1463-1470 ◽  
Author(s):  
Xuelin Zhang ◽  
Teng Zhang ◽  
Changhai Li ◽  
Hongshuang Wang ◽  
Xiao Chen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Flux ◽  
Flame Retardant ◽  
External Heat ◽  
External Heat Flux

Effectiveness-NTU Relationship for a Counterflow Heat Exchanger Subjected to an External Heat Transfer

2004 ◽  
Vol 127 (9) ◽  
pp. 1071-1073 ◽  
Author(s):  
Gregory F. Nellis ◽  
John M. Pfotenhauer
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Heat Exchanger ◽  
Numerical Model ◽  
Analytical Solution ◽  
Convenient Method ◽  
Process Engineering ◽  
External Heat ◽  
External Heat Transfer ◽  
External Heat Flux

This paper presents the analytical solution for the effectiveness of a counterflow heat exchanger subjected to a uniformly distributed, external heat flux. The solution is verified against conventional ε-NTU relations in the limit of zero external heat flux. This situation is of interest in applications such as cryogenic and process engineering, and the analytical solution provides a convenient method for treating differential elements of a heat exchanger in a numerical model.

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