A Computational Model Based Study To Control The Flow Of Heat Radiation From The Sun In Reinforce Concrete Slab

Abstract

It has been found from the past studies approximately 30% heat is getting transferred inside the buildings through the concrete slab. In this research, an attempt is made to study and identify a suitable heat controlling barrier in the RC slab. The study aims to find the heat flow through the RC slab into the building by constructing two RC slabs with different heat guarding techniques and one slab as control unit.  Slab 1 without weathering course (Without WC – control unit), Slab 2 with weathering course (with WC), Slab 3 with barrier made of air transient layer as heat barrier (Hollow pipe).  Initially, a computation study was carried using COMSOL 4.3 a FEM based soft tool to find the thickness and location of air transient layer to provide in RC slab 3.  The slabs were kept in ambient environment and day temperatures were measured at six different time slots (8 am, 11 am, 01 pm, 03 pm and 06 pm) in different depths in the slab (0.2 mm to 0.8 mm from bottom).  Based on the data collected for about six weeks the suitable heat controlling barrier in RC slab was identified and reported.