Exact(7)
Radiator temperature distribution and cooling performance was predicted using theoretical calculations, then validated using CFD simulation results.
A mathematical model for the TPV devices was developed to describe the effect of cell bandgap and radiator temperature on electric power output and cell efficiency.
An electric power density of 5.4×103 W m−2 was produced at a radiator temperature of 1463 K for the small cogeneration system.
The short circuit current of the InGaAsSb cells increased more rapidly than that of the GaSb cells in radiator temperature range 930 1215 °C.
Due to the high thermal convection of the high-density atmosphere, the heat rejection temperature was assumed to be at a 500 °C radiator temperature, 50 °C above ambient.
The results indicated that the modified 1D PhC would lead to 21.0 5.9% increase of the spectral efficiency and 14.8 5.3% increase of the power density at 1200 1800 K radiator temperature.
Similar(53)
Radiator temperatures ranged from 250 to 350 K with sky temperatures from 185 to 248 K.
Simulations were performed with various levels of detail and the calculated indoor temperatures and radiator return temperatures were compared to temperatures measured in the case house.
Then the heat emitted from the radiator at temperatures from 45 K up to 250 K was used for the absorptivity measurement.
The TPV device under study involves a spectrally selective radiator at a temperature of 2000 K, a gallium antimonide cell, and a cell thermal management system characterized by a fluid temperature and a heat transfer coefficient of 293 K and 600 Wm−2 K−1.
The heat emitters used were a high and a medium high temperature radiator, a floor heating system and large wall heating surfaces at low temperature.
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