Direct Diffuse Radiation from Surface 2 to Surface 1 Calculator

✖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%
✖Radiosity of 2nd Body represents the rate at which radiation energy leaves a unit area of a surface in all directions.ⓘ Radiosity of 2nd Body [J₂]			+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).ⓘ Direct Diffuse Radiation from Surface 2 to Surface 1 [q_2->1]

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Direct Diffuse Radiation from Surface 2 to Surface 1 Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Transfer from Surface 2 to 1 = Surface Area of Body 2*Radiation Shape Factor 21*Radiosity of 2nd Body
q_2->1 = A₂*F₂₁*J₂
This formula uses 4 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).
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.
Radiosity of 2nd Body - (Measured in Watt per Square Meter) - Radiosity of 2nd Body represents the rate at which radiation energy leaves a unit area of a surface in all directions.

STEP 1: Convert Input(s) to Base Unit

Surface Area of Body 2: 50 Square Meter --> 50 Square Meter No Conversion Required
Radiation Shape Factor 21: 0.41 --> No Conversion Required
Radiosity of 2nd Body: 49 Watt per Square Meter --> 49 Watt per Square Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

q_2->1 = A₂*F₂₁*J₂ --> 50*0.41*49

Evaluating ... ...

q_2->1 = 1004.5

STEP 3: Convert Result to Output's Unit

1004.5 Watt --> No Conversion Required

FINAL ANSWER

1004.5 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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University of Hawaiʻi at Mānoa (UH Manoa), Hawaii, USA

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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

Direct Diffuse Radiation from Surface 2 to Surface 1 Formula

LaTeX Go

Heat Transfer from Surface 2 to 1 = Surface Area of Body 2*Radiation Shape Factor 21*Radiosity of 2nd Body
q_2->1 = A₂*F₂₁*J₂

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 Direct Diffuse Radiation from Surface 2 to Surface 1?

Direct Diffuse Radiation from Surface 2 to Surface 1 calculator uses Heat Transfer from Surface 2 to 1 = Surface Area of Body 2*Radiation Shape Factor 21*Radiosity of 2nd Body to calculate the Heat Transfer from Surface 2 to 1, The Direct Diffuse Radiation from Surface 2 to Surface 1 formula is defined as the function of Surface area, shape factor and radiosity. Direct radiation has a definite direction but diffuse radiation follows a much more scattered, uncertain path. Because when the radiation is direct, the rays are all travelling in the same direction, an object can block them all at once. Therefore, it can be noted that shadows are only produced when direct radiation is blocked. Heat Transfer from Surface 2 to 1 is denoted by q_2->1 symbol.

How to calculate Direct Diffuse Radiation from Surface 2 to Surface 1 using this online calculator? To use this online calculator for Direct Diffuse Radiation from Surface 2 to Surface 1, enter Surface Area of Body 2 (A₂), Radiation Shape Factor 21 (F₂₁) & Radiosity of 2nd Body (J₂) and hit the calculate button. Here is how the Direct Diffuse Radiation from Surface 2 to Surface 1 calculation can be explained with given input values -> 1004.5 = 50*0.41*49.

FAQ

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

The Direct Diffuse Radiation from Surface 2 to Surface 1 formula is defined as the function of Surface area, shape factor and radiosity. Direct radiation has a definite direction but diffuse radiation follows a much more scattered, uncertain path. Because when the radiation is direct, the rays are all travelling in the same direction, an object can block them all at once. Therefore, it can be noted that shadows are only produced when direct radiation is blocked and is represented as q_2->1 = A₂*F₂₁*J₂ or Heat Transfer from Surface 2 to 1 = Surface Area of Body 2*Radiation Shape Factor 21*Radiosity of 2nd Body. 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 & Radiosity of 2nd Body represents the rate at which radiation energy leaves a unit area of a surface in all directions.

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

The Direct Diffuse Radiation from Surface 2 to Surface 1 formula is defined as the function of Surface area, shape factor and radiosity. Direct radiation has a definite direction but diffuse radiation follows a much more scattered, uncertain path. Because when the radiation is direct, the rays are all travelling in the same direction, an object can block them all at once. Therefore, it can be noted that shadows are only produced when direct radiation is blocked is calculated using Heat Transfer from Surface 2 to 1 = Surface Area of Body 2*Radiation Shape Factor 21*Radiosity of 2nd Body. To calculate Direct Diffuse Radiation from Surface 2 to Surface 1, you need Surface Area of Body 2 (A₂), Radiation Shape Factor 21 (F₂₁) & Radiosity of 2nd Body (J₂). With our tool, you need to enter the respective value for Surface Area of Body 2, Radiation Shape Factor 21 & Radiosity of 2nd Body 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 Surface Area of Body 2, Radiation Shape Factor 21 & Radiosity of 2nd Body. We can use 2 other way(s) to calculate the same, which is/are as follows -

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)
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)

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