A glass roof panel, of dimensions 0.75m × 0.65m, in an attic room transmits 90% of the incident visible sunlight, which accounts for about 40% of solar energy, and is opaque to infrared light. On a sunny day, when the incident solar energy is 340 W/m ² , a person with a basal metabolic rate of 85W is working in the room on a computer that is using 65W. Calculate the net ventilation rate required in litres/second if the temperature is to remain constant in the room, assuming: 30W are lost by heat transfer through the floor & walls; the energy lost via th ventilated aire is 20 KJ/kgl and air has a density of 1.20 kg/m ³ . Give your answer to two decimal places.

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Area of Roof panel 075m 065m 04875m 2 Incident Solar energy ... View the full answer