Stack Height of Furnace given Design Pressure and Flue Gas Temperature Calculator

✖Draft pressure, also known as chimney draft or flue draft, refers to the pressure difference between the inside and outside of a combustion system or chimney.ⓘ Draft Pressure [P_Draft]			+10% -10%
✖Atmospheric Pressure is the pressure exerted by the atmosphere on to the surface of Earth.ⓘ Atmospheric Pressure [P_Atm]			+10% -10%
✖Ambient Temperature refers to the temperature of the surrounding air or environment at a specific location.ⓘ Ambient Temperature [T_Ambient]			+10% -10%
✖Flue gas temperature refers to the temperature of the gases that are produced as a byproduct of combustion in various processes, such as in industrial furnaces.ⓘ Flue Gas Temperature [T_{Flue Gas}]			+10% -10%

✖Stack Height is the height of chimney/ furnace which is used to vent the combustion gases and emissions produced during heating/combustion.ⓘ Stack Height of Furnace given Design Pressure and Flue Gas Temperature [L_s]

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Formula

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Stack Height of Furnace given Design Pressure and Flue Gas Temperature

Formula

L s = \frac{P Draft}{0.0342 \cdot P Atm \cdot (\frac{1}{T Ambient} - \frac{1}{T Flue Gas})}

Example

6522.086 mm = \frac{11083.03 mm}{0.0342 \cdot 100000 Pa \cdot (\frac{1}{298.15 K} - \frac{1}{350 K})}

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Stack Height of Furnace given Design Pressure and Flue Gas Temperature Solution

STEP 0: Pre-Calculation Summary

Formula Used

Stack Height = Draft Pressure/(0.0342*Atmospheric Pressure*(1/Ambient Temperature-1/Flue Gas Temperature))
L_s = P_Draft/(0.0342*P_Atm*(1/T_Ambient-1/T_{Flue Gas}))
This formula uses 5 Variables

Variables Used

Stack Height - (Measured in Meter) - Stack Height is the height of chimney/ furnace which is used to vent the combustion gases and emissions produced during heating/combustion.
Draft Pressure - (Measured in Meter) - Draft pressure, also known as chimney draft or flue draft, refers to the pressure difference between the inside and outside of a combustion system or chimney.
Atmospheric Pressure - (Measured in Pascal) - Atmospheric Pressure is the pressure exerted by the atmosphere on to the surface of Earth.
Ambient Temperature - (Measured in Kelvin) - Ambient Temperature refers to the temperature of the surrounding air or environment at a specific location.
Flue Gas Temperature - (Measured in Kelvin) - Flue gas temperature refers to the temperature of the gases that are produced as a byproduct of combustion in various processes, such as in industrial furnaces.

STEP 1: Convert Input(s) to Base Unit

Draft Pressure: 11083.03 Millimeter --> 11.08303 Meter (Check conversion here)
Atmospheric Pressure: 100000 Pascal --> 100000 Pascal No Conversion Required
Ambient Temperature: 298.15 Kelvin --> 298.15 Kelvin No Conversion Required
Flue Gas Temperature: 350 Kelvin --> 350 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

L_s = P_Draft/(0.0342*P_Atm*(1/T_Ambient-1/T_{Flue Gas})) --> 11.08303/(0.0342*100000*(1/298.15-1/350))

Evaluating ... ...

L_s = 6.5220856839342

STEP 3: Convert Result to Output's Unit

6.5220856839342 Meter -->6522.0856839342 Millimeter (Check conversion here)

FINAL ANSWER

6522.0856839342 ≈ 6522.086 Millimeter <-- Stack Height

(Calculation completed in 00.004 seconds)

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Home » Engineering » Chemical Engineering » Process Equipment Design » Heat Exchangers » Basic Formulas of Heat Exchanger Designs » Stack Height of Furnace given Design Pressure and Flue Gas Temperature

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Stack Height of Furnace given Design Pressure and Flue Gas Temperature Formula

Stack Height = Draft Pressure/(0.0342*Atmospheric Pressure*(1/Ambient Temperature-1/Flue Gas Temperature))
L_s = P_Draft/(0.0342*P_Atm*(1/T_Ambient-1/T_{Flue Gas}))

What is Pressure Draft in Furnace?

In the context of a furnace, Pressure Draft (also known as forced draft or positive pressure draft) is a method used to create a controlled flow of air or combustion gases within the furnace system. The pressure draft is achieved by using mechanical means, such as fans or blowers, to force air into the furnace and maintain a positive pressure inside the combustion chamber.

What is Significance of Pressure Draft in Furnace?

In a pressure draft system, the air is pushed into the furnace, ensuring that the pressure inside the combustion chamber is higher than the atmospheric pressure outside. This positive pressure helps to prevent any leakage of combustion gases and ensures that the flames and combustion process remain contained within the furnace.

How to Calculate Stack Height of Furnace given Design Pressure and Flue Gas Temperature?

Stack Height of Furnace given Design Pressure and Flue Gas Temperature calculator uses Stack Height = Draft Pressure/(0.0342*Atmospheric Pressure*(1/Ambient Temperature-1/Flue Gas Temperature)) to calculate the Stack Height, The Stack Height of Furnace given Design Pressure and Flue Gas Temperature formula is defined as the vertical distance from the base of the furnace or the ground level to the top of the chimney or stack through which the combustion gases and byproducts are expelled into the atmosphere. Stack Height is denoted by L_s symbol.

How to calculate Stack Height of Furnace given Design Pressure and Flue Gas Temperature using this online calculator? To use this online calculator for Stack Height of Furnace given Design Pressure and Flue Gas Temperature, enter Draft Pressure (P_Draft), Atmospheric Pressure (P_Atm), Ambient Temperature (T_Ambient) & Flue Gas Temperature (T_{Flue Gas}) and hit the calculate button. Here is how the Stack Height of Furnace given Design Pressure and Flue Gas Temperature calculation can be explained with given input values -> 6.5E+6 = 11.08303/(0.0342*100000*(1/298.15-1/350)).

FAQ

What is Stack Height of Furnace given Design Pressure and Flue Gas Temperature?

The Stack Height of Furnace given Design Pressure and Flue Gas Temperature formula is defined as the vertical distance from the base of the furnace or the ground level to the top of the chimney or stack through which the combustion gases and byproducts are expelled into the atmosphere and is represented as L_s = P_Draft/(0.0342*P_Atm*(1/T_Ambient-1/T_{Flue Gas})) or Stack Height = Draft Pressure/(0.0342*Atmospheric Pressure*(1/Ambient Temperature-1/Flue Gas Temperature)). Draft pressure, also known as chimney draft or flue draft, refers to the pressure difference between the inside and outside of a combustion system or chimney, Atmospheric Pressure is the pressure exerted by the atmosphere on to the surface of Earth, Ambient Temperature refers to the temperature of the surrounding air or environment at a specific location & Flue gas temperature refers to the temperature of the gases that are produced as a byproduct of combustion in various processes, such as in industrial furnaces.

How to calculate Stack Height of Furnace given Design Pressure and Flue Gas Temperature?

The Stack Height of Furnace given Design Pressure and Flue Gas Temperature formula is defined as the vertical distance from the base of the furnace or the ground level to the top of the chimney or stack through which the combustion gases and byproducts are expelled into the atmosphere is calculated using Stack Height = Draft Pressure/(0.0342*Atmospheric Pressure*(1/Ambient Temperature-1/Flue Gas Temperature)). To calculate Stack Height of Furnace given Design Pressure and Flue Gas Temperature, you need Draft Pressure (P_Draft), Atmospheric Pressure (P_Atm), Ambient Temperature (T_Ambient) & Flue Gas Temperature (T_{Flue Gas}). With our tool, you need to enter the respective value for Draft Pressure, Atmospheric Pressure, Ambient Temperature & Flue Gas 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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