Bottom Loss Coefficient in Solar Energy Systems Formulas

Bottom loss coefficient is evaluated by considering conduction and convection losses from the absorber plate in the downward direction. And is denoted by U_b. Bottom Loss Coefficient is usually measured using the Watt per Square Meter per Kelvin for Heat Transfer Coefficient. Note that the value of Bottom Loss Coefficient is always negative.

Formulas to find Bottom Loss Coefficient in Solar Energy Systems

fxBottom loss coefficientGo

Solar Energy Systems formulas that make use of Bottom Loss Coefficient

fxIncident flux when flow is between Cover and Absorber plateGo

List of variables in Solar Energy Systems formulas

fx Thermal Conductivity of Insulation Go

fx Thickness of Insulation Go

FAQ

What is the Bottom Loss Coefficient?

Bottom loss coefficient is evaluated by considering conduction and convection losses from the absorber plate in the downward direction. Bottom Loss Coefficient is usually measured using the Watt per Square Meter per Kelvin for Heat Transfer Coefficient. Note that the value of Bottom Loss Coefficient is always negative.

Can the Bottom Loss Coefficient be negative?

Yes, the Bottom Loss Coefficient, measured in Heat Transfer Coefficient can be negative.

What unit is used to measure Bottom Loss Coefficient?

Bottom Loss Coefficient is usually measured using the Watt per Square Meter per Kelvin[W/m²*K] for Heat Transfer Coefficient. Watt per Square Meter per Celcius[W/m²*K], Joule per Second per Square Meter per Kelvin[W/m²*K], Kilocalorie (IT) per Hour per Square Foot per Celcius[W/m²*K] are the few other units in which Bottom Loss Coefficient can be measured.

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