Question: A new building to be located in a cold climate is being designed with a basement that has an L=200 mm thick wall. Inner and

A new building to be located in a cold climate is being designed with a basement that has an L=200 mm thick wall. Inner and outer basement wall temperatures are Ti=20 c and To=0 c respectively. the architect can specify the wall material to be either aerated concrete block with k= 0.35 W/m.K or stone mix concrete. To reduce the conduction heat flux through the stone mix wall to a level equivalent to that of the aerated concrete wall, a) what thickness of extruded polystyrene sheet (Rho = 35 Kg/m^3) must be applied onto the inner surface of the stone mix concrete wall? Floor dimensions of the basement are 20 m * 30 m, and the expected rental rate is $50/m2/month. b) What is the yearly cost,in the terms of lost rental income, if the stone mix concrete wall with polystyrene insulation is specified

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