FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

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

Fx Copy

LaTeX Copy

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. Check FAQs

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

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

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

With values

With units

Only example

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

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

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

0.4099 = 0.59 \cdot (\frac{34.74}{50})

0.4099 = 0.59 \cdot (\frac{34.74m²}{50m²})

0.4099 = 0.59 \cdot (\frac{34.74}{50})

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Chemical Engineering » Category

Heat Transfer » fx Shape Factor 21 given Area of Both Surface and Shape Factor 12

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

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

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

F 21 = 0.59 \cdot (\frac{34.74m²}{50m²})

Next Step Prepare to Evaluate

∴

F 21 = 0.59 \cdot (\frac{34.74}{50})

Next Step Evaluate

∴

F 21 = 0.409932

LAST Step Rounding Answer

∴

F 21 = 0.4099

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

Variables

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

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 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

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

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 21 given Area of Both Surface and Shape Factor 12?

Shape Factor 21 given Area of Both Surface and Shape Factor 12 evaluator uses Radiation Shape Factor 21 = Radiation Shape Factor 12*(Surface Area of Body 1/Surface Area of Body 2) to evaluate the Radiation Shape Factor 21, The Shape Factor 21 given Area of Both Surface and Shape Factor 12 formula is defined as the product of shape factor 12 and the ratio of Surface area 1 by surface area 2. Radiation Shape Factor 21 is denoted by F₂₁ symbol.

How to evaluate Shape Factor 21 given Area of Both Surface and Shape Factor 12 using this online evaluator? To use this online evaluator for Shape Factor 21 given Area of Both Surface and Shape Factor 12, enter Radiation Shape Factor 12 (F₁₂), Surface Area of Body 1 (A₁) & Surface Area of Body 2 (A₂) and hit the calculate button.

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

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

The formula of Shape Factor 21 given Area of Both Surface and Shape Factor 12 is expressed as Radiation Shape Factor 21 = Radiation Shape Factor 12*(Surface Area of Body 1/Surface Area of Body 2). Here is an example- 0.409932 = 0.59*(34.74/50).

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

With Radiation Shape Factor 12 (F₁₂), Surface Area of Body 1 (A₁) & Surface Area of Body 2 (A₂) we can find Shape Factor 21 given Area of Both Surface and Shape Factor 12 using the formula - Radiation Shape Factor 21 = Radiation Shape Factor 12*(Surface Area of Body 1/Surface Area of Body 2).

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit