Abstract
The paper describes tests intended to examine the occurrence of natural
convection within the space occupied by 40×20 mm rectangular steel
sections. Within these tests the bed of four layers of section was heated
by the electric palate heater. Depending on the manner in which the heater
was positioned, the tests were divided into two series. In the case of
heating from above, the heat flowing through the bed is transferred only
by conduction and radiation. When heating the bed from below, in addition
to conduction and radiation, also a convective heat transfer will occur.
Should this be the case, it will result in the intensification of the heat
exchange. The results of measurements carried out have not demonstrated
that the occurrence of any possible natural convection would influence the
development of a temperature field in this type of charge.
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