Abstract
The paper presents the results of the simulation of convectional heat transfer in buildings with radiant gas heating. The study is provided by numerical researches based on existing buildings and numerical studies with the use of modern software ANSYS Multiphysics Fluent, Autodesk Inventor. The data reliability is ensured by the use of fundamental laws in regards to numerical researches and approved mathematic models application; certificated measuring equipment; licensed software products; matching of numerical and experimental researches; matching of the simulation with other works. The simulation of luminous infrared gas emitters of all thermal powers (5, 10, 15, 20, 30, 40 kW) in pre-wall and central placements at heights of 4, 5, 6, 7, 8, 9, 10 m was conducted. Gas-fired infrared heat emitters with heat output of 5, 10, 15, 20, 30, 40 kW were studied. Obtained function of IR-heated zone diameter is close to logarithmic function of thermal output. Effective emitter placement heights and least horizontal pitch for the given room volume were determined.
Highlights
It’s essential to know the thermal performance [1,2] when designing and operating a radiant gas heating that is the radiant heat flow during the operation of infrared gas emitters [3 – 5]
Together with the fact that buildings with radiant gas heating have high thermal performance [7, 8], they have a number of drawbacks [9, 10]: their upper zone is overheated; their walls are often covered by smut leading to subsequent destruction
Problem solving is provided by numerical researches based on existing buildings and numerical studies with the use of modern software ANSYS Multiphysics Fluent [10 – 15], Autodesk Inventor
Summary
It’s essential to know the thermal performance [1,2] when designing and operating a radiant gas heating that is the radiant heat flow during the operation of infrared gas emitters [3 – 5]. The aim of the work is to identify the dependences, which describe the thermal rate and heat flow density distribution during the operation of infrared gas burners. Another aim is to determine the effective spots for emitters in terms of the room space. Together with the fact that buildings with radiant gas heating have high thermal performance [7, 8], they have a number of drawbacks [9, 10]: their upper zone is overheated; their walls are often covered by smut leading to subsequent destruction. To solve the problems assigned, several numerical, experimental and analytic researches were executed. Problem solving is provided by numerical researches based on existing buildings and numerical studies with the use of modern software ANSYS Multiphysics Fluent [10 – 15], Autodesk Inventor
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