Diffuse Radiation Exchange from Surface 2 to Surface 1 Calculator

✖Diffuse Radiosity for Surface 2 represents the rate at which radiation energy leaves a unit area of a surface in all directions.ⓘ Diffuse Radiosity for Surface 2 [J_2D]			+10% -10%
✖The Surface Area of Body 2 is the area of body 2 upon which the radiation takes place.ⓘ Surface Area of Body 2 [A₂]			+10% -10%
✖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.ⓘ Radiation Shape Factor 21 [F₂₁]			+10% -10%
✖Specular Component of Reflectivity of Surface 1 is a type of surface reflectance often described as a mirror-like reflection of light from the surface.ⓘ Specular Component of Reflectivity of Surface 1 [ρ_1s]			+10% -10%

✖Heat Transfer from Surface 2 to 1 is the amount of heat that is transferred per unit of time in some material, usually measured in watts (joules per second).ⓘ Diffuse Radiation Exchange from Surface 2 to Surface 1 [q_2->1]

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Diffuse Radiation Exchange from Surface 2 to Surface 1 Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Transfer from Surface 2 to 1 = Diffuse Radiosity for Surface 2*Surface Area of Body 2*Radiation Shape Factor 21*(1-Specular Component of Reflectivity of Surface 1)
q_2->1 = J_2D*A₂*F₂₁*(1-ρ_1s)
This formula uses 5 Variables

Variables Used

Heat Transfer from Surface 2 to 1 - (Measured in Watt) - Heat Transfer from Surface 2 to 1 is the amount of heat that is transferred per unit of time in some material, usually measured in watts (joules per second).
Diffuse Radiosity for Surface 2 - (Measured in Watt per Square Meter) - Diffuse Radiosity for Surface 2 represents the rate at which radiation energy leaves a unit area of a surface in all directions.
Surface Area of Body 2 - (Measured in Square Meter) - The Surface Area of Body 2 is the area of body 2 upon which the radiation takes place.
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.
Specular Component of Reflectivity of Surface 1 - Specular Component of Reflectivity of Surface 1 is a type of surface reflectance often described as a mirror-like reflection of light from the surface.

STEP 1: Convert Input(s) to Base Unit

Diffuse Radiosity for Surface 2: 44 Watt per Square Meter --> 44 Watt per Square Meter No Conversion Required
Surface Area of Body 2: 50 Square Meter --> 50 Square Meter No Conversion Required
Radiation Shape Factor 21: 0.41 --> No Conversion Required
Specular Component of Reflectivity of Surface 1: 0.53 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

q_2->1 = J_2D*A₂*F₂₁*(1-ρ_1s) --> 44*50*0.41*(1-0.53)

Evaluating ... ...

q_2->1 = 423.94

STEP 3: Convert Result to Output's Unit

423.94 Watt --> No Conversion Required

FINAL ANSWER

423.94 Watt <-- Heat Transfer from Surface 2 to 1

(Calculation completed in 00.004 seconds)

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Created by Ayush gupta

University School of Chemical Technology-USCT (GGSIPU), New Delhi

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< Radiation Exchange with Specular Surfaces Calculators

Net Heat Lost by Surface given Diffuse Radiosity

LaTeX Go Heat Transfer = ((Emissivity*Area)/(Diffuse Component of Reflectivity))*((Emissive Power of Blackbody*(Emissivity+Diffuse Component of Reflectivity))-Diffuse Radiosity)

Net Heat Lost by Surface

LaTeX Go Heat Transfer = Area*((Emissivity*Emissive Power of Blackbody)-(Absorptivity*Irradiation))

Diffuse Radiosity

LaTeX Go Diffuse Radiosity = ((Emissivity*Emissive Power of Blackbody)+(Diffuse Component of Reflectivity*Irradiation))

Reflectivity given Specular and Diffuse Component

LaTeX Go Reflectivity = Specular Component of Reflectivity+Diffuse Component of Reflectivity

< Important Formulas in Gas Radiation, Radiation Exchange with Specular Surfaces and more Special Cases Calculators

Initial Radiation Intensity

LaTeX Go Initial Radiation Intensity = Radiation Intensity at Distance x/exp(-(Monochromatic Absorption Coefficient*Distance))

Monochromatic Transmissivity

LaTeX Go Monochromatic Transmissivity = exp(-(Monochromatic Absorption Coefficient*Distance))

Monochromatic Absorption Coefficient if Gas is Non-Reflecting

LaTeX Go Monochromatic Absorption Coefficient = 1-Monochromatic Transmissivity

Monochromatic Transmissivity if Gas is Non Reflecting

LaTeX Go Monochromatic Transmissivity = 1-Monochromatic Absorption Coefficient

Diffuse Radiation Exchange from Surface 2 to Surface 1 Formula

LaTeX Go

What is Radiation?

Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.

What is Reflectivity?

A measure of the ability of a surface to reflect radiation, equal to the reflectance of a layer of material sufficiently thick for the reflectance not to depend on the thickness.

How to Calculate Diffuse Radiation Exchange from Surface 2 to Surface 1?

Diffuse Radiation Exchange from Surface 2 to Surface 1 calculator uses Heat Transfer from Surface 2 to 1 = Diffuse Radiosity for Surface 2*Surface Area of Body 2*Radiation Shape Factor 21*(1-Specular Component of Reflectivity of Surface 1) to calculate the Heat Transfer from Surface 2 to 1, The Diffuse Radiation Exchange from Surface 2 to Surface 1 formula is defined as the function of Diffuse radiosity, surface area, shape factor specular component of reflectivity. In this arrangement any diffuse radiation leaving surface 1 that is specularly reflected by 2 will not be reflected directly back to 1. This is an important point, for in eliminating such reflections we are considering only the direct diffuse exchange between the two surfaces. Heat Transfer from Surface 2 to 1 is denoted by q_2->1 symbol.

How to calculate Diffuse Radiation Exchange from Surface 2 to Surface 1 using this online calculator? To use this online calculator for Diffuse Radiation Exchange from Surface 2 to Surface 1, enter Diffuse Radiosity for Surface 2 (J_2D), Surface Area of Body 2 (A₂), Radiation Shape Factor 21 (F₂₁) & Specular Component of Reflectivity of Surface 1 (ρ_1s) and hit the calculate button. Here is how the Diffuse Radiation Exchange from Surface 2 to Surface 1 calculation can be explained with given input values -> 423.94 = 44*50*0.41*(1-0.53).

FAQ

What is Diffuse Radiation Exchange from Surface 2 to Surface 1?

The Diffuse Radiation Exchange from Surface 2 to Surface 1 formula is defined as the function of Diffuse radiosity, surface area, shape factor specular component of reflectivity. In this arrangement any diffuse radiation leaving surface 1 that is specularly reflected by 2 will not be reflected directly back to 1. This is an important point, for in eliminating such reflections we are considering only the direct diffuse exchange between the two surfaces and is represented as q_2->1 = J_2D*A₂*F₂₁*(1-ρ_1s) or Heat Transfer from Surface 2 to 1 = Diffuse Radiosity for Surface 2*Surface Area of Body 2*Radiation Shape Factor 21*(1-Specular Component of Reflectivity of Surface 1). Diffuse Radiosity for Surface 2 represents the rate at which radiation energy leaves a unit area of a surface in all directions, The Surface Area of Body 2 is the area of body 2 upon which the radiation takes place, 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 & Specular Component of Reflectivity of Surface 1 is a type of surface reflectance often described as a mirror-like reflection of light from the surface.

How to calculate Diffuse Radiation Exchange from Surface 2 to Surface 1?

The Diffuse Radiation Exchange from Surface 2 to Surface 1 formula is defined as the function of Diffuse radiosity, surface area, shape factor specular component of reflectivity. In this arrangement any diffuse radiation leaving surface 1 that is specularly reflected by 2 will not be reflected directly back to 1. This is an important point, for in eliminating such reflections we are considering only the direct diffuse exchange between the two surfaces is calculated using Heat Transfer from Surface 2 to 1 = Diffuse Radiosity for Surface 2*Surface Area of Body 2*Radiation Shape Factor 21*(1-Specular Component of Reflectivity of Surface 1). To calculate Diffuse Radiation Exchange from Surface 2 to Surface 1, you need Diffuse Radiosity for Surface 2 (J_2D), Surface Area of Body 2 (A₂), Radiation Shape Factor 21 (F₂₁) & Specular Component of Reflectivity of Surface 1 (ρ_1s). With our tool, you need to enter the respective value for Diffuse Radiosity for Surface 2, Surface Area of Body 2, Radiation Shape Factor 21 & Specular Component of Reflectivity of Surface 1 and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Heat Transfer from Surface 2 to 1?

In this formula, Heat Transfer from Surface 2 to 1 uses Diffuse Radiosity for Surface 2, Surface Area of Body 2, Radiation Shape Factor 21 & Specular Component of Reflectivity of Surface 1. We can use 2 other way(s) to calculate the same, which is/are as follows -

Heat Transfer from Surface 2 to 1 = Surface Area of Body 2*Radiation Shape Factor 21*Radiosity of 2nd Body
Heat Transfer from Surface 2 to 1 = Surface Area of Body 2*Radiation Shape Factor 21*Radiosity of 2nd Body

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