Hourly Diffuse Component in Solar Energy Systems Formulas

Hourly diffuse component is defined as the part of total radiation that reaches earth’s surface after a change of its directions due to scattering by the atmosphere per hour. And is denoted by I_d. Hourly Diffuse Component is usually measured using the Joule per Second per Square Meter for Heat Flux Density. Note that the value of Hourly Diffuse Component is always negative.

Solar Energy Systems formulas that make use of Hourly Diffuse Component

fxInstantaneous collection efficiency of concentrating collectorGo

fxUseful heat gain when collection efficiency is presentGo

fxFlux absorbed in compound parabolic collectorGo

FAQ

What is the Hourly Diffuse Component?

Hourly diffuse component is defined as the part of total radiation that reaches earth’s surface after a change of its directions due to scattering by the atmosphere per hour. Hourly Diffuse Component is usually measured using the Joule per Second per Square Meter for Heat Flux Density. Note that the value of Hourly Diffuse Component is always negative.

Can the Hourly Diffuse Component be negative?

Yes, the Hourly Diffuse Component, measured in Heat Flux Density can be negative.

What unit is used to measure Hourly Diffuse Component?

Hourly Diffuse Component is usually measured using the Joule per Second per Square Meter[J/sm²] for Heat Flux Density. Watt per Square Meter[J/sm²], Kilowatt per Square Meter[J/sm²], Watt per Square Centimeter[J/sm²] are the few other units in which Hourly Diffuse Component can be measured.

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