Mathematical Solutions for Mean Radiant Temperature Calculation in a Rectangular or Non-rectangular Geometry
Thermal environments of human body are affected by the mutual radiate heat exchange among the internal
surfaces. This study describes an effective calculation method for view factors between non-rectangular surfaces in
non-rectangular enclosures. The impact of room shape and different surface temperatures (windows and floor) on thermal
comfort for a human body is estimated by computer simulation. For this purpose are rooms with two different shapes, two
different floor surface temperatures, and two different window sizes considered to see the impact. A theoretical procedure for
numerical approach of MRT (Mean Radiant Temperature) or OT (Operative Temperature) in rectangular spaces can be found
in some literature. Author developed the method and program (COMFORT) for MRT calculation in a non-rectangular space.
MRT distribution is provided as a function of the boundary condition of a model room and room shape.
Key words - Angle factor, Mathematical solution, Geometry, Non-rectangular.