You want to heat a house on a very cold day as shown in the figure. To do this, you want to use photovoltaic panels as an energy source. It would be about using 15 panels each with an area of ​​1.5...

You want to heat a house on a very cold day as shown in the figure. To do this, you want to use photovoltaic panels as an energy source. It would be about using 15 panels each with an area of ​​1.5 m2. These panels would be connected to an electrical resistance that would heat the house as shown in the figure. The house is losing heat through the walls and ceiling as shown in the figure. The panels are receiving solar radiation at a rate of 800 W / m2 and if their efficiency is 15%. How much will the temperature of the house rise after an hour? The house is hermetically sealed. Assume that the specific heats of air, cv and cp, are constant as shown in the figure.

sol = sun

fuga = leakage

aire = air

Extracted text: T =-15 C exterior Q = 1.5 kW fuga n = 15 % panel G = 800 W/m? sol aire c,= 0.718 kJ/kg.K c,= 1.005 kJ/kg.K V = 200 m3 To - 10 C 111