Vol. 10, Special Issue 11 (2021)

Author(s):
Amit, Subhasish Sahu, Rakesh Kumar, Komal, Devender Singh Bidhan, SK Chhikara, Vishal Sharma and Spandan Shashwat Dash

Abstract:
An attempt was made to study the difference in surface temperature (both inside and outside) of different roof types during summer at the buffalo farm of LPM, LUVAS, Hisar (Haryana). The experiment was divided into four treatments viz. T₁ (control): Corrugated asbestos roof; T₂: Corrugated asbestos roof painted white on upper side; T₃: Corrugated asbestos roof having EPE (Expanded polyethylene) sheet on lower side and T₄: Corrugated asbestos roof painted white on upper side and EPE sheet on lower side. The recording of surface temperature of each roof (both inside and outside) was done at weekly intervals. The overall outside ST at 7:00 AM was significantly higher (P<0.01) in T₁ and T₃ as compared to T₂ and T₄. Similarly, the overall outside ST at 2:00 PM differed significantly (P<0.01) between the treatments except T₁ and T₃ which did not differ significantly and highest values were seen in T₃ and lowest in T₂, whereas; the overall inside ST was significantly (P<0.01) high in asbestos roof as compared to other treatments both at 7:00 AM and 2:00 PM but corresponding values did not differ significantly for T₂, T₃ and T₄ at 7:00 AM and T₃ and T₄ at 2:00 PM. So it can be concluded that different roof types where EPE sheets were used as thermal insulation can reduce the temperature beneath shed upto 7 ⁰C, while white paint with EPE sheets can lower down the temperature of shed upto 15 ⁰C.