Question

According to Indian Standards, overall thermal transmittance of a wall should not be more than __________ kcal/m^2 h deg C.

(a) 1.3

(b) 2.2

(c) 3.7

(d) 4.6

This question was posed to me by my college professor while I was bunking the class.

My question comes from Thermal Insulation topic in section Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

Answer 1

Correct option is (b) 2.2

To explain I would say: According to Indian Standards, overall thermal transmittance of a wall should not be more than 2.2 kcal/m^2 h deg C. Heat insulation of exposed walls can be achieved by increasing the thickness of the wall.