Incident flux when flow is between Cover and Absorber plate Solution

STEP 0: Pre-Calculation Summary
Formula Used
Flux Absorbed by Plate = Convective Heat Transfer Coeff of Solar*(Average Temperature of Absorber Plate-Inlet Fluid Temperature Flat Plate Collector)+(Equivalent Radiative Heat Transfer Coefficient*(Average Temperature of Absorber Plate-Temperature of Cover))+(Bottom Loss Coefficient*(Average Temperature of Absorber Plate-Ambient Air Temperature))
Sflux = hfp*(Tpm-Tfi)+(hr*(Tpm-Tc))+(Ub*(Tpm-Ta))
This formula uses 8 Variables
Variables Used
Flux Absorbed by Plate - (Measured in Watt per Square Meter) - Flux Absorbed by Plate is the amount of solar energy absorbed by the plate in a solar air heater, which is used to heat the air for various applications.
Convective Heat Transfer Coeff of Solar - (Measured in Watt per Square Meter per Kelvin) - Convective Heat Transfer Coeff of Solar is the rate of heat transfer between the solar air heater and the surrounding air.
Average Temperature of Absorber Plate - (Measured in Kelvin) - Average Temperature of Absorber Plate is the average temperature of the absorber plate in a solar air heater, which affects the overall system efficiency.
Inlet Fluid Temperature Flat Plate Collector - (Measured in Kelvin) - Inlet Fluid Temperature Flat Plate Collector is the temperature of the fluid entering the flat plate collector in a solar air heater system.
Equivalent Radiative Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - Equivalent Radiative Heat Transfer Coefficient is the rate of heat transfer between the solar air heater and its surroundings through radiation.
Temperature of Cover - (Measured in Kelvin) - Temperature of Cover is the temperature of the cover or glazing material used in a solar air heater to trap heat and improve its efficiency.
Bottom Loss Coefficient - (Measured in Watt per Square Meter per Kelvin) - Bottom Loss Coefficient is the measure of heat loss from the bottom of a solar air heater to the surroundings, affecting its overall efficiency.
Ambient Air Temperature - (Measured in Kelvin) - Ambient Air Temperature is the temperature of the air surrounding the solar air heater, which affects the system's overall performance and efficiency.
STEP 1: Convert Input(s) to Base Unit
Convective Heat Transfer Coeff of Solar: 4.5 Watt per Square Meter per Kelvin --> 4.5 Watt per Square Meter per Kelvin No Conversion Required
Average Temperature of Absorber Plate: 107.69 Kelvin --> 107.69 Kelvin No Conversion Required
Inlet Fluid Temperature Flat Plate Collector: 3.06 Kelvin --> 3.06 Kelvin No Conversion Required
Equivalent Radiative Heat Transfer Coefficient: 1.162423 Watt per Square Meter per Kelvin --> 1.162423 Watt per Square Meter per Kelvin No Conversion Required
Temperature of Cover: 172.30744 Kelvin --> 172.30744 Kelvin No Conversion Required
Bottom Loss Coefficient: 0.7 Watt per Square Meter per Kelvin --> 0.7 Watt per Square Meter per Kelvin No Conversion Required
Ambient Air Temperature: 300 Kelvin --> 300 Kelvin No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Sflux = hfp*(Tpm-Tfi)+(hr*(Tpm-Tc))+(Ub*(Tpm-Ta)) --> 4.5*(107.69-3.06)+(1.162423*(107.69-172.30744))+(0.7*(107.69-300))
Evaluating ... ...
Sflux = 261.10520154288
STEP 3: Convert Result to Output's Unit
261.10520154288 Watt per Square Meter -->261.10520154288 Joule per Second per Square Meter (Check conversion ​here)
FINAL ANSWER
261.10520154288 261.1052 Joule per Second per Square Meter <-- Flux Absorbed by Plate
(Calculation completed in 00.004 seconds)

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Created by ADITYA RAWAT
DIT UNIVERSITY (DITU), Dehradun
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Solar Air Heater Calculators

Effective heat transfer coefficient for variation
​ LaTeX ​ Go Effective Heat Transfer Coefficient = Convective Heat Transfer Coeff of Solar*(1+(2*Fin Height*Fin Effectiveness*Convective Heat Transfer Coeff of Solar Fin)/(Distance between Fins*Convective Heat Transfer Coeff of Solar))+(Equivalent Radiative Heat Transfer Coefficient*Convective Heat Transfer Coeff of Solar Bottom)/(Equivalent Radiative Heat Transfer Coefficient+Convective Heat Transfer Coeff of Solar Bottom)
Effective heat transfer coefficient
​ LaTeX ​ Go Effective Heat Transfer Coefficient = Convective Heat Transfer Coeff of Solar+(Equivalent Radiative Heat Transfer Coefficient*Convective Heat Transfer Coeff of Solar Bottom)/(Equivalent Radiative Heat Transfer Coefficient+Convective Heat Transfer Coeff of Solar Bottom)
Equivalent radiative heat transfer coefficient
​ LaTeX ​ Go Equivalent Radiative Heat Transfer Coefficient = (4*[Stefan-BoltZ]*(Average Temperature of Absorber Plate+Mean Temperature of Plate below)^3)/((1/Emissivity of Absorber Plate Surface)+(1/Emissivity of Bottom Plate Surface)-1*(8))
Collector efficiency factor
​ LaTeX ​ Go Collector Efficiency Factor = (1+Overall Loss Coefficient/Effective Heat Transfer Coefficient)^-1

Incident flux when flow is between Cover and Absorber plate Formula

​LaTeX ​Go
Flux Absorbed by Plate = Convective Heat Transfer Coeff of Solar*(Average Temperature of Absorber Plate-Inlet Fluid Temperature Flat Plate Collector)+(Equivalent Radiative Heat Transfer Coefficient*(Average Temperature of Absorber Plate-Temperature of Cover))+(Bottom Loss Coefficient*(Average Temperature of Absorber Plate-Ambient Air Temperature))
Sflux = hfp*(Tpm-Tfi)+(hr*(Tpm-Tc))+(Ub*(Tpm-Ta))

What is Incident Flux?

Radiative flux, also known as radiative flux density or radiation flux (or sometimes power flux density), is the amount of power radiated through a given area, in the form of photons or other elementary particles.

How to Calculate Incident flux when flow is between Cover and Absorber plate?

Incident flux when flow is between Cover and Absorber plate calculator uses Flux Absorbed by Plate = Convective Heat Transfer Coeff of Solar*(Average Temperature of Absorber Plate-Inlet Fluid Temperature Flat Plate Collector)+(Equivalent Radiative Heat Transfer Coefficient*(Average Temperature of Absorber Plate-Temperature of Cover))+(Bottom Loss Coefficient*(Average Temperature of Absorber Plate-Ambient Air Temperature)) to calculate the Flux Absorbed by Plate, Incident flux when flow is between Cover and Absorber plate formula is defined as the rate of energy transfer per unit area from the absorber plate to the flowing fluid in a solar air heater, influenced by factors such as plate temperatures, heat transfer coefficients, and fluid flow rates. Flux Absorbed by Plate is denoted by Sflux symbol.

How to calculate Incident flux when flow is between Cover and Absorber plate using this online calculator? To use this online calculator for Incident flux when flow is between Cover and Absorber plate, enter Convective Heat Transfer Coeff of Solar (hfp), Average Temperature of Absorber Plate (Tpm), Inlet Fluid Temperature Flat Plate Collector (Tfi), Equivalent Radiative Heat Transfer Coefficient (hr), Temperature of Cover (Tc), Bottom Loss Coefficient (Ub) & Ambient Air Temperature (Ta) and hit the calculate button. Here is how the Incident flux when flow is between Cover and Absorber plate calculation can be explained with given input values -> 201.0166 = 4.5*(107.69-3.06)+(1.162423*(107.69-172.30744))+(0.7*(107.69-300)).

FAQ

What is Incident flux when flow is between Cover and Absorber plate?
Incident flux when flow is between Cover and Absorber plate formula is defined as the rate of energy transfer per unit area from the absorber plate to the flowing fluid in a solar air heater, influenced by factors such as plate temperatures, heat transfer coefficients, and fluid flow rates and is represented as Sflux = hfp*(Tpm-Tfi)+(hr*(Tpm-Tc))+(Ub*(Tpm-Ta)) or Flux Absorbed by Plate = Convective Heat Transfer Coeff of Solar*(Average Temperature of Absorber Plate-Inlet Fluid Temperature Flat Plate Collector)+(Equivalent Radiative Heat Transfer Coefficient*(Average Temperature of Absorber Plate-Temperature of Cover))+(Bottom Loss Coefficient*(Average Temperature of Absorber Plate-Ambient Air Temperature)). Convective Heat Transfer Coeff of Solar is the rate of heat transfer between the solar air heater and the surrounding air, Average Temperature of Absorber Plate is the average temperature of the absorber plate in a solar air heater, which affects the overall system efficiency, Inlet Fluid Temperature Flat Plate Collector is the temperature of the fluid entering the flat plate collector in a solar air heater system, Equivalent Radiative Heat Transfer Coefficient is the rate of heat transfer between the solar air heater and its surroundings through radiation, Temperature of Cover is the temperature of the cover or glazing material used in a solar air heater to trap heat and improve its efficiency, Bottom Loss Coefficient is the measure of heat loss from the bottom of a solar air heater to the surroundings, affecting its overall efficiency & Ambient Air Temperature is the temperature of the air surrounding the solar air heater, which affects the system's overall performance and efficiency.
How to calculate Incident flux when flow is between Cover and Absorber plate?
Incident flux when flow is between Cover and Absorber plate formula is defined as the rate of energy transfer per unit area from the absorber plate to the flowing fluid in a solar air heater, influenced by factors such as plate temperatures, heat transfer coefficients, and fluid flow rates is calculated using Flux Absorbed by Plate = Convective Heat Transfer Coeff of Solar*(Average Temperature of Absorber Plate-Inlet Fluid Temperature Flat Plate Collector)+(Equivalent Radiative Heat Transfer Coefficient*(Average Temperature of Absorber Plate-Temperature of Cover))+(Bottom Loss Coefficient*(Average Temperature of Absorber Plate-Ambient Air Temperature)). To calculate Incident flux when flow is between Cover and Absorber plate, you need Convective Heat Transfer Coeff of Solar (hfp), Average Temperature of Absorber Plate (Tpm), Inlet Fluid Temperature Flat Plate Collector (Tfi), Equivalent Radiative Heat Transfer Coefficient (hr), Temperature of Cover (Tc), Bottom Loss Coefficient (Ub) & Ambient Air Temperature (Ta). With our tool, you need to enter the respective value for Convective Heat Transfer Coeff of Solar, Average Temperature of Absorber Plate, Inlet Fluid Temperature Flat Plate Collector, Equivalent Radiative Heat Transfer Coefficient, Temperature of Cover, Bottom Loss Coefficient & Ambient Air Temperature and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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