Emissivity given heat transfer coefficient by radiation Calculator

✖Heat Transfer Coefficient by Radiation is the heat transferred per unit area per kelvin.ⓘ Heat Transfer Coefficient by Radiation [h_r]			+10% -10%
✖Wall Temperature is the temperature at the wall.ⓘ Wall Temperature [T_wa]			+10% -10%
✖Saturation Temperature is the temperature for a corresponding saturation pressure at which a liquid boils into its vapor phase.ⓘ Saturation Temperature [T_s]			+10% -10%

✖Emissivity is the ability of an object to emit infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic or oxidized surfaces have emissivity close to 0.95.ⓘ Emissivity given heat transfer coefficient by radiation [ε]

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Emissivity given heat transfer coefficient by radiation Solution

STEP 0: Pre-Calculation Summary

Formula Used

Emissivity = Heat Transfer Coefficient by Radiation/([Stefan-BoltZ]*((Wall Temperature^4-Saturation Temperature^4)/(Wall Temperature-Saturation Temperature)))
ε = h_r/([Stefan-BoltZ]*((T_wa^4-T_s^4)/(T_wa-T_s)))
This formula uses 1 Constants, 4 Variables

Constants Used

[Stefan-BoltZ] - Stefan-Boltzmann Constant Value Taken As 5.670367E-8

Variables Used

Emissivity - Emissivity is the ability of an object to emit infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic or oxidized surfaces have emissivity close to 0.95.
Heat Transfer Coefficient by Radiation - (Measured in Watt per Square Meter per Kelvin) - Heat Transfer Coefficient by Radiation is the heat transferred per unit area per kelvin.
Wall Temperature - (Measured in Kelvin) - Wall Temperature is the temperature at the wall.
Saturation Temperature - (Measured in Kelvin) - Saturation Temperature is the temperature for a corresponding saturation pressure at which a liquid boils into its vapor phase.

STEP 1: Convert Input(s) to Base Unit

Heat Transfer Coefficient by Radiation: 1.5 Watt per Square Meter per Kelvin --> 1.5 Watt per Square Meter per Kelvin No Conversion Required
Wall Temperature: 300 Kelvin --> 300 Kelvin No Conversion Required
Saturation Temperature: 200 Kelvin --> 200 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

ε = h_r/([Stefan-BoltZ]*((T_wa^4-T_s^4)/(T_wa-T_s))) --> 1.5/([Stefan-BoltZ]*((300^4-200^4)/(300-200)))

Evaluating ... ...

ε = 0.406974064940119

STEP 3: Convert Result to Output's Unit

0.406974064940119 --> No Conversion Required

FINAL ANSWER

0.406974064940119 ≈ 0.406974 <-- Emissivity

(Calculation completed in 00.007 seconds)

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Emissivity given heat transfer coefficient by radiation Formula

LaTeX Go

What is boiling?

Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.

How to Calculate Emissivity given heat transfer coefficient by radiation?

Emissivity given heat transfer coefficient by radiation calculator uses Emissivity = Heat Transfer Coefficient by Radiation/([Stefan-BoltZ]*((Wall Temperature^4-Saturation Temperature^4)/(Wall Temperature-Saturation Temperature))) to calculate the Emissivity, The Emissivity given heat transfer coefficient by radiation formula is defined as the measure of an object's ability to emit infrared energy. Emissivity is denoted by ε symbol.

How to calculate Emissivity given heat transfer coefficient by radiation using this online calculator? To use this online calculator for Emissivity given heat transfer coefficient by radiation, enter Heat Transfer Coefficient by Radiation (h_r), Wall Temperature (T_wa) & Saturation Temperature (T_s) and hit the calculate button. Here is how the Emissivity given heat transfer coefficient by radiation calculation can be explained with given input values -> 0.406974 = 1.5/([Stefan-BoltZ]*((300^4-200^4)/(300-200))).

FAQ

What is Emissivity given heat transfer coefficient by radiation?

The Emissivity given heat transfer coefficient by radiation formula is defined as the measure of an object's ability to emit infrared energy and is represented as ε = h_r/([Stefan-BoltZ]*((T_wa^4-T_s^4)/(T_wa-T_s))) or Emissivity = Heat Transfer Coefficient by Radiation/([Stefan-BoltZ]*((Wall Temperature^4-Saturation Temperature^4)/(Wall Temperature-Saturation Temperature))). Heat Transfer Coefficient by Radiation is the heat transferred per unit area per kelvin, Wall Temperature is the temperature at the wall & Saturation Temperature is the temperature for a corresponding saturation pressure at which a liquid boils into its vapor phase.

How to calculate Emissivity given heat transfer coefficient by radiation?

The Emissivity given heat transfer coefficient by radiation formula is defined as the measure of an object's ability to emit infrared energy is calculated using Emissivity = Heat Transfer Coefficient by Radiation/([Stefan-BoltZ]*((Wall Temperature^4-Saturation Temperature^4)/(Wall Temperature-Saturation Temperature))). To calculate Emissivity given heat transfer coefficient by radiation, you need Heat Transfer Coefficient by Radiation (h_r), Wall Temperature (T_wa) & Saturation Temperature (T_s). With our tool, you need to enter the respective value for Heat Transfer Coefficient by Radiation, Wall Temperature & Saturation Temperature and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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