Abstract
Mathematical modelling of unsteady convective-conductive heat exchange in premises, heated by infrared radiant heater is passed. Heat flux density from infrared radiant heater was calculated accounting energy distribution along horizontal and vertical building envelope. Comparison between zonal method and Lambert's law radiant energy distribution was done.
Highlights
The expedience of radiant heating systems using is described in detail in many papers both Russian [1] and foreign scientists [2]
The experimental study of premises heating by gas infrared radiator (GIR) requires considerable means consumption, so in some cases using mathematical modelling methods is more preferred
Mathematical modelling of conductive – convective heat transfer in the conjugate formulation [3, 4] is a priority for such problems, because models based on the heat balance of premises [5] do not show the dynamics of heat transfer completely
Summary
The expedience of radiant heating systems using is described in detail in many papers both Russian [1] and foreign scientists [2]. Mathematical modelling of conductive – convective heat transfer in the conjugate formulation [3, 4] is a priority for such problems, because models based on the heat balance of premises [5] do not show the dynamics of heat transfer completely. Introduced algorithm for calculating the radiant heating systems [6] does not account convective streams of air and heat conduction of enclosure structures. In the mathematical model of conductive – convective unsteady heat transfer process of radiant heating one of the internal borders of closed rectangular area in the conjugate formulation [8] was assumed that the heat flux was evenly distributed along the inner surfaces. The aim this study is the numerical simulation the unsteady process of closed rectangular area radiant heating in conjugate formulation with accounting energy distribution along horizontal and vertical enclosure structures.
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