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Shape Factor 12 given Area of Both Surface and Shape Factor 21 Formula

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Radiation Shape Factor 12 is the fraction of radiation energy radiated by one surface which is incident on another surface when both surfaces are placed in a non-absorbing medium. Check FAQs

F 12 = (\frac{A 2}{A 1}) \cdot F 21

F₁₂ - Radiation Shape Factor 12?A₂ - Surface Area of Body 2?A₁ - Surface Area of Body 1?F₂₁ - Radiation Shape Factor 21?

Shape Factor 12 given Area of Both Surface and Shape Factor 21 Example

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Here is how the Shape Factor 12 given Area of Both Surface and Shape Factor 21 equation looks like with Values.

Here is how the Shape Factor 12 given Area of Both Surface and Shape Factor 21 equation looks like with Units.

Here is how the Shape Factor 12 given Area of Both Surface and Shape Factor 21 equation looks like.

0.5901 = (\frac{50}{34.74}) \cdot 0.41

0.5901 = (\frac{50m²}{34.74m²}) \cdot 0.41

0.5901 = (\frac{50}{34.74}) \cdot 0.41

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Shape Factor 12 given Area of Both Surface and Shape Factor 21 Solution

Follow our step by step solution on how to calculate Shape Factor 12 given Area of Both Surface and Shape Factor 21?

FIRST Step Consider the formula

F 12 = (\frac{A 2}{A 1}) \cdot F 21

Next Step Substitute values of Variables

∴

F 12 = (\frac{50m²}{34.74m²}) \cdot 0.41

Next Step Prepare to Evaluate

∴

F 12 = (\frac{50}{34.74}) \cdot 0.41

Next Step Evaluate

∴

F 12 = 0.590097869890616

LAST Step Rounding Answer

∴

F 12 = 0.5901

Shape Factor 12 given Area of Both Surface and Shape Factor 21 Formula Elements

Variables

Radiation Shape Factor 12

Radiation Shape Factor 12 is the fraction of radiation energy radiated by one surface which is incident on another surface when both surfaces are placed in a non-absorbing medium.

Symbol: F₁₂

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Radiation Shape Factor 12

Surface Area of Body 2

The Surface Area of Body 2 is the area of body 2 upon which the radiation takes place.

Symbol: A₂

Measurement: AreaUnit: m²

Note: Value can be positive or negative.

Formulas to find Surface Area of Body 2

Surface Area of Body 1

The Surface Area of Body 1 is the area of body 1 through which the radiation takes place.

Symbol: A₁

Measurement: AreaUnit: m²

Note: Value can be positive or negative.

Formulas to find Surface Area of Body 1

Radiation Shape Factor 21

Radiation Shape Factor 21 is the fraction of radiation energy radiated by one surface which is incident on another surface when both surfaces are placed in a non-absorbing medium.

Symbol: F₂₁

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Radiation Shape Factor 21

Other formulas in Radiation Formulas category

Go Absorptivity given Reflectivity and Transmissivity

α = 1 - ρ - 𝜏

Go Area of Surface 1 given Area 2 and Radiation Shape Factor for Both Surfaces

A 1 = A 2 \cdot (\frac{F 21}{F 12})

Go Area of Surface 2 given Area 1 and Radiation Shape Factor for Both Surfaces

A 2 = A 1 \cdot (\frac{F 12}{F 21})

Go Emissive Power of Blackbody

E b = [Stefan-BoltZ] \cdot (T^{4})

How to Evaluate Shape Factor 12 given Area of Both Surface and Shape Factor 21?

Shape Factor 12 given Area of Both Surface and Shape Factor 21 evaluator uses Radiation Shape Factor 12 = (Surface Area of Body 2/Surface Area of Body 1)*Radiation Shape Factor 21 to evaluate the Radiation Shape Factor 12, The Shape Factor 12 given Area of Both Surface and Shape Factor 21 formula is defined as the product of shape factor 21 and the ratio of Surface area 2 by surface area 1. Radiation Shape Factor 12 is denoted by F₁₂ symbol.

How to evaluate Shape Factor 12 given Area of Both Surface and Shape Factor 21 using this online evaluator? To use this online evaluator for Shape Factor 12 given Area of Both Surface and Shape Factor 21, enter Surface Area of Body 2 (A₂), Surface Area of Body 1 (A₁) & Radiation Shape Factor 21 (F₂₁) and hit the calculate button.

FAQs on Shape Factor 12 given Area of Both Surface and Shape Factor 21

What is the formula to find Shape Factor 12 given Area of Both Surface and Shape Factor 21?

The formula of Shape Factor 12 given Area of Both Surface and Shape Factor 21 is expressed as Radiation Shape Factor 12 = (Surface Area of Body 2/Surface Area of Body 1)*Radiation Shape Factor 21. Here is an example- 0.590098 = (50/34.74)*0.41.

How to calculate Shape Factor 12 given Area of Both Surface and Shape Factor 21?

With Surface Area of Body 2 (A₂), Surface Area of Body 1 (A₁) & Radiation Shape Factor 21 (F₂₁) we can find Shape Factor 12 given Area of Both Surface and Shape Factor 21 using the formula - Radiation Shape Factor 12 = (Surface Area of Body 2/Surface Area of Body 1)*Radiation Shape Factor 21.

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