The Study of Flat Convective Stream Formed by Use of Recessed Flood Convection Heaters with Natural Air Circulation in High Height Rooms with Continuous Glassing

Convection heaters built into a floor prevent descending cold airflow from vertical translucent structures from entering serviced room zone. The study assumes a convection heater with natural air circulation installed near a glassing. Convection heater’s length is equal to glassing’s length. The height of a room is assumed to be typical for public buildings and is equal to 6 m. Convection heater’s heat flow is equal to heat loss through glassing. The computational model is developed and recessed floor convection heater’s operation simulation in “ANSYS Fluent 14.5” software package with different distances from a glassing to a convection heater is produced. Studies are carried out for “long” heat source given that convection heater’s finned section length is equal to glassing’s length. Temperature and velocity fields in the room are calculated. Room’s natural convective streams (descending cold airflow near the glassing and ascending warm airflow from the convection heater) are described. The conditions for use of recessed floor convection heaters with natural air circulation are determined. It is recommended that the convection heater should be installed no further than 300 mm from the glassing (distance of 200 mm is optimal). Under such conditions warm airflow adheres to the glassing and uniform temperature field in room’s volume is established.