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Materials and Chemical Engineering
Why is solar radiation equal to long wavelength emission?
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[QUOTE="CWatters, post: 6083076, member: 423469"] Yes, if solar gain increases then the temperature will rise and it will radiate more. While temperature is rising solar gain > radiated loss. When temperature is stable solar gain = radiated loss. The exact amount of gain/loss depends on the temperature and other factors. While temperature is falling solar gain < radiated loss.Consider a house in winter. If you set the thermostat to 18C the house will eventually reach 18C. When its stable at 18C the power going into the house will be equal to the power lost through the walls. Let's say they are both 10kW. If you turn up the thermostat to 20C the heating system will increase its output delivering more heat than the house is loosing and the temperature will rise and the losses increase. Once the temperature is stable at 20C the power going into the house will again be equal to the power lost. However the loss will be greater because the temperature gradient through the wall will be higher. They might both be 11kW. [/QUOTE]
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Why is solar radiation equal to long wavelength emission?
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