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Effective heat transfer coefficient for variation Formula

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Effective Heat Transfer Coefficient is the rate of heat transfer between the solar air heater and the surrounding air, affecting its overall performance. Check FAQs

h e = h fp \cdot (1 + \frac{2 \cdot L f \cdot Φ f \cdot h ff}{W \cdot h fp}) + \frac{h r \cdot h fb}{h r + h fb}

h_e - Effective Heat Transfer Coefficient?h_fp - Convective Heat Transfer Coeff of Solar?L_f - Fin Height?Φ_f - Fin Effectiveness?h_ff - Convective Heat Transfer Coeff of Solar Fin?W - Distance between Fins?h_r - Equivalent Radiative Heat Transfer Coefficient?h_fb - Convective Heat Transfer Coeff of Solar Bottom?

Effective heat transfer coefficient for variation Example

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Here is how the Effective heat transfer coefficient for variation equation looks like with Values.

Here is how the Effective heat transfer coefficient for variation equation looks like with Units.

Here is how the Effective heat transfer coefficient for variation equation looks like.

5.354 = 4.5 \cdot (1 + \frac{2 \cdot 12 \cdot 0.01 \cdot 0.16}{30 \cdot 4.5}) + \frac{1.1624 \cdot 3.2}{1.1624 + 3.2}

5.354W/m²*K = 4.5W/m²*K \cdot (1 + \frac{2 \cdot 12mm \cdot 0.01 \cdot 0.16W/m²*K}{30mm \cdot 4.5W/m²*K}) + \frac{1.1624W/m²*K \cdot 3.2W/m²*K}{1.1624W/m²*K + 3.2W/m²*K}

5.354 = 4.5 \cdot (1 + \frac{2 \cdot 12 \cdot 0.01 \cdot 0.16}{30 \cdot 4.5}) + \frac{1.1624 \cdot 3.2}{1.1624 + 3.2}

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Effective heat transfer coefficient for variation Solution

Follow our step by step solution on how to calculate Effective heat transfer coefficient for variation?

FIRST Step Consider the formula

h e = h fp \cdot (1 + \frac{2 \cdot L f \cdot Φ f \cdot h ff}{W \cdot h fp}) + \frac{h r \cdot h fb}{h r + h fb}

Next Step Substitute values of Variables

∴

h e = 4.5W/m²*K \cdot (1 + \frac{2 \cdot 12mm \cdot 0.01 \cdot 0.16W/m²*K}{30mm \cdot 4.5W/m²*K}) + \frac{1.1624W/m²*K \cdot 3.2W/m²*K}{1.1624W/m²*K + 3.2W/m²*K}

Next Step Convert Units

∴

h e = 4.5W/m²*K \cdot (1 + \frac{2 \cdot 0.012m \cdot 0.01 \cdot 0.16W/m²*K}{0.03m \cdot 4.5W/m²*K}) + \frac{1.1624W/m²*K \cdot 3.2W/m²*K}{1.1624W/m²*K + 3.2W/m²*K}

Next Step Prepare to Evaluate

∴

h e = 4.5 \cdot (1 + \frac{2 \cdot 0.012 \cdot 0.01 \cdot 0.16}{0.03 \cdot 4.5}) + \frac{1.1624 \cdot 3.2}{1.1624 + 3.2}

Next Step Evaluate

∴

h e = 5.35396063184153W/m²*K

LAST Step Rounding Answer

∴

h e = 5.354W/m²*K

Effective heat transfer coefficient for variation Formula Elements

Variables

Effective Heat Transfer Coefficient

Effective Heat Transfer Coefficient is the rate of heat transfer between the solar air heater and the surrounding air, affecting its overall performance.

Symbol: h_e

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value can be positive or negative.

Formulas to find Effective Heat Transfer Coefficient

Convective Heat Transfer Coeff of Solar

Convective Heat Transfer Coeff of Solar is the rate of heat transfer between the solar air heater and the surrounding air.

Symbol: h_fp

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value should be greater than 0.

Formulas to find Convective Heat Transfer Coeff of Solar

Fin Height

Fin Height is the vertical distance of the fins in a solar air heater, which affects the heat transfer and overall efficiency of the system.

Symbol: L_f

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Fin Height

Fin Effectiveness

Fin Effectiveness is the measure of a solar air heater's ability to absorb heat from the sun and transfer it to the air being heated.

Symbol: Φ_f

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Fin Effectiveness

Convective Heat Transfer Coeff of Solar Fin

Convective Heat Transfer Coeff of Solar Fin is the rate of heat transfer between the solar fin and the surrounding air in a solar air heater.

Symbol: h_ff

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value can be positive or negative.

Formulas to find Convective Heat Transfer Coeff of Solar Fin

Distance between Fins

Distance between Fins is the space between the fins in a solar air heater that facilitates airflow and heat transfer from the absorber plate.

Symbol: W

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Distance between Fins

Equivalent Radiative Heat Transfer Coefficient

Equivalent Radiative Heat Transfer Coefficient is the rate of heat transfer between the solar air heater and its surroundings through radiation.

Symbol: h_r

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value can be positive or negative.

Formulas to find Equivalent Radiative Heat Transfer Coefficient

Convective Heat Transfer Coeff of Solar Bottom

Convective Heat Transfer Coeff of Solar Bottom is the rate of heat transfer between the solar absorber plate and the surrounding air in a solar air heater.

Symbol: h_fb

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value should be greater than 0.

Formulas to find Convective Heat Transfer Coeff of Solar Bottom

Other Formulas to find Effective Heat Transfer Coefficient

Go Effective heat transfer coefficient

h e = h fp + \frac{h r \cdot h fb}{h r + h fb}

Other formulas in Solar Air Heater category

Go Equivalent radiative heat transfer coefficient

h r = \frac{4 \cdot [Stefan-BoltZ] \cdot {(T pm + T bm)}^{3}}{(\frac{1}{ε p}) + (\frac{1}{ε b}) - 1 \cdot (8)}

Go Collector efficiency factor

F′ = {(1 + \frac{U l}{h e})}^{- 1}

How to Evaluate Effective heat transfer coefficient for variation?

Effective heat transfer coefficient for variation evaluator uses 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) to evaluate the Effective Heat Transfer Coefficient, Effective heat transfer coefficient for variation formula is defined as a measure of the overall heat transfer ability of a solar air heater, taking into account the effects of various factors such as the plate and fin geometries, flow rates, and thermal properties of the working fluid. Effective Heat Transfer Coefficient is denoted by h_e symbol.

How to evaluate Effective heat transfer coefficient for variation using this online evaluator? To use this online evaluator for Effective heat transfer coefficient for variation, enter Convective Heat Transfer Coeff of Solar (h_fp), Fin Height (L_f), Fin Effectiveness (Φ_f), Convective Heat Transfer Coeff of Solar Fin (h_ff), Distance between Fins (W), Equivalent Radiative Heat Transfer Coefficient (h_r) & Convective Heat Transfer Coeff of Solar Bottom (h_fb) and hit the calculate button.

FAQs on Effective heat transfer coefficient for variation

What is the formula to find Effective heat transfer coefficient for variation?

The formula of Effective heat transfer coefficient for variation is expressed as 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). Here is an example- 5.353961 = 4.5*(1+(2*0.012*0.01*0.16)/(0.03*4.5))+(1.162423*3.2)/(1.162423+3.2).

How to calculate Effective heat transfer coefficient for variation?

With Convective Heat Transfer Coeff of Solar (h_fp), Fin Height (L_f), Fin Effectiveness (Φ_f), Convective Heat Transfer Coeff of Solar Fin (h_ff), Distance between Fins (W), Equivalent Radiative Heat Transfer Coefficient (h_r) & Convective Heat Transfer Coeff of Solar Bottom (h_fb) we can find Effective heat transfer coefficient for variation using the formula - 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).

What are the other ways to Calculate Effective Heat Transfer Coefficient?

Here are the different ways to Calculate Effective Heat Transfer Coefficient-

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)

Can the Effective heat transfer coefficient for variation be negative?

Yes, the Effective heat transfer coefficient for variation, measured in Heat Transfer Coefficient can be negative.

Which unit is used to measure Effective heat transfer coefficient for variation?

Effective heat transfer coefficient for variation 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 Effective heat transfer coefficient for variation can be measured.

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Effective heat transfer coefficient for variation Formula

​GoEffective heat transfer coefficient Formula

Effective heat transfer coefficient for variation Example

Effective heat transfer coefficient for variation Solution

Effective heat transfer coefficient for variation Formula Elements

Other Formulas to find Effective Heat Transfer Coefficient

Other formulas in Solar Air Heater category

How to Evaluate Effective heat transfer coefficient for variation?

FAQs on Effective heat transfer coefficient for variation

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GoEffective heat transfer coefficient Formula