Modified Heat Transfer Coefficient under Influence of Pressure Calculator

✖Heat Transfer Coefficient at Atmospheric Pressure is the heat transferred per unit area per kelvin.ⓘ Heat Transfer Coefficient at Atmospheric Pressure [h₁]			+10% -10%
✖System Pressure is the pressure that is being exerted on the system.ⓘ System Pressure [p_s]			+10% -10%
✖Standard Atmospheric Pressure is the pressure that is being exerted on the system by the atmosphere.ⓘ Standard Atmospheric Pressure [p₁]			+10% -10%

✖Heat Transfer Coefficient at Some Pressure P is the heat transferred per unit area per kelvin.ⓘ Modified Heat Transfer Coefficient under Influence of Pressure [h_p]

⎘ Copy

👎

Formula

✖

Modified Heat Transfer Coefficient under Influence of Pressure

Formula

`"h"_{"p"} = ("h"_{"1"})*(("p"_{"s"}/"p"_{"1"})^(0.4))`

Example

`"44.95387W/m²*K"=("10.9W/m²*K")*(("3.5Pa"/"0.101325Pa")^(0.4))`

Calculator

LaTeX

Reset

👍

Download Boiling Formulas PDF

Modified Heat Transfer Coefficient under Influence of Pressure Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4))
h_p = (h₁)*((p_s/p₁)^(0.4))
This formula uses 4 Variables

Variables Used

Heat Transfer Coefficient at Some Pressure P - (Measured in Watt per Square Meter per Kelvin) - Heat Transfer Coefficient at Some Pressure P is the heat transferred per unit area per kelvin.
Heat Transfer Coefficient at Atmospheric Pressure - (Measured in Watt per Square Meter per Kelvin) - Heat Transfer Coefficient at Atmospheric Pressure is the heat transferred per unit area per kelvin.
System Pressure - (Measured in Pascal) - System Pressure is the pressure that is being exerted on the system.
Standard Atmospheric Pressure - (Measured in Pascal) - Standard Atmospheric Pressure is the pressure that is being exerted on the system by the atmosphere.

STEP 1: Convert Input(s) to Base Unit

Heat Transfer Coefficient at Atmospheric Pressure: 10.9 Watt per Square Meter per Kelvin --> 10.9 Watt per Square Meter per Kelvin No Conversion Required
System Pressure: 3.5 Pascal --> 3.5 Pascal No Conversion Required
Standard Atmospheric Pressure: 0.101325 Pascal --> 0.101325 Pascal No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

h_p = (h₁)*((p_s/p₁)^(0.4)) --> (10.9)*((3.5/0.101325)^(0.4))

Evaluating ... ...

h_p = 44.9538684871627

STEP 3: Convert Result to Output's Unit

44.9538684871627 Watt per Square Meter per Kelvin --> No Conversion Required

FINAL ANSWER

44.9538684871627 ≈ 44.95387 Watt per Square Meter per Kelvin <-- Heat Transfer Coefficient at Some Pressure P

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Chemical Engineering » Heat Transfer » Boiling and Condensation » Boiling » Modified Heat Transfer Coefficient under Influence of Pressure

Credits

Created by Ayush gupta

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

Ayush gupta has created this Calculator and 300+ more calculators!

Verified by Prerana Bakli

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

Prerana Bakli has verified this Calculator and 1600+ more calculators!

< 14 Boiling Calculators

Radius of Vapour Bubble in Mechanical Equilibrium in Superheated Liquid

Go Radius of Vapor Bubble = (2*Surface Tension*[R]*(Saturation Temperature^2))/(Pressure of Superheated Liquid*Enthalpy of Vaporization of Liquid*(Temperature of Superheated Liquid-Saturation Temperature))

Critical Heat Flux by Zuber

Go Critical Heat Flux = ((0.149*Enthalpy of Vaporization of Liquid*Density of Vapor)* (((Surface Tension*[g])*(Density of Liquid-Density of Vapor))/ (Density of Vapor^2))^(1/4))

Radiation Heat Transfer Coefficient

Go Radiation Heat Transfer Coefficient = (([Stefan-BoltZ]*Emissivity*(((Plate Surface Temperature)^4)-((Saturation Temperature)^4)))/(Plate Surface Temperature-Saturation Temperature))

Total Heat Transfer Coefficient

Go Total Heat Transfer Coefficient = Heat Transfer Coefficient in Film Boiling Region* ((Heat Transfer Coefficient in Film Boiling Region/Heat Transfer Coefficient)^(1/3))+Radiation Heat Transfer Coefficient

Modified Heat of Vaporization

Go Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapor)*((Plate Surface Temperature-Saturation Temperature)/2))

Modified Heat Transfer Coefficient under Influence of Pressure

Go Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4))

Correlation for Heat Flux proposed by Mostinski

Go Heat Transfer Coefficient For Nucleate Boiling = 0.00341*(Critical Pressure^2.3)*(Excess Temperature in Nucleate Boiling^2.33)*(Reduced Pressure^0.566)

Heat Transfer Coefficient for Forced Convection Local Boiling Inside Vertical Tubes

Go Heat Transfer Coefficient for Forced Convection = (2.54*((Excess Temperature)^3)*exp((System Pressure in Vertical Tubes)/1.551))

Heat Flux in Fully Developed Boiling State for Higher Pressures

Go Rate of Heat Transfer = 283.2*Area*((Excess Temperature)^(3))*((Pressure)^(4/3))

Heat Transfer Coefficient given Biot Number

Go Heat Transfer Coefficient = (Biot Number*Thermal Conductivity)/Thickness of Wall

Saturated Temperature given Excess Temperature

Go Saturation Temperature = Surface Temperature-Excess Temperature in Heat Transfer

Surface Temperature given Excess Temperature

Go Surface Temperature = Saturation Temperature+Excess Temperature in Heat Transfer

Excess Temperature in Boiling

Go Excess Temperature in Heat Transfer = Surface Temperature-Saturation Temperature

Heat Flux in Fully Developed Boiling State for Pressure upto 0.7 Megapascal

Go Rate of Heat Transfer = 2.253*Area*((Excess Temperature)^(3.96))

Modified Heat Transfer Coefficient under Influence of Pressure Formula

Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4))
h_p = (h₁)*((p_s/p₁)^(0.4))

What is Heat Transfer?

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes.

Define Thermal Conductivity & Factors affecting it?

Thermal conductivity is defined as the ability of a substance to conduct heat. Factors Affecting The Thermal Conductivity are: Moisture, Density of material, Pressure, Temperature & Structure of material.

How to Calculate Modified Heat Transfer Coefficient under Influence of Pressure?

Modified Heat Transfer Coefficient under Influence of Pressure calculator uses Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4)) to calculate the Heat Transfer Coefficient at Some Pressure P, The Modified Heat Transfer Coefficient under Influence of Pressure formula is a function of Heat Transfer Coefficient at Atmospheric Pressure, System Pressure & Standard Atmospheric Pressure. The modified heat transfer coefficient is affected by a number of factors, including the fluid flow velocity, the fluid properties, the surface roughness, and the presence of any fouling. In general, the modified heat transfer coefficient increases with increasing fluid flow velocity and decreasing surface roughness. Heat Transfer Coefficient at Some Pressure P is denoted by h_p symbol.

How to calculate Modified Heat Transfer Coefficient under Influence of Pressure using this online calculator? To use this online calculator for Modified Heat Transfer Coefficient under Influence of Pressure, enter Heat Transfer Coefficient at Atmospheric Pressure (h₁), System Pressure (p_s) & Standard Atmospheric Pressure (p₁) and hit the calculate button. Here is how the Modified Heat Transfer Coefficient under Influence of Pressure calculation can be explained with given input values -> 44.95387 = (10.9)*((3.5/0.101325)^(0.4)).

FAQ

What is Modified Heat Transfer Coefficient under Influence of Pressure?

The Modified Heat Transfer Coefficient under Influence of Pressure formula is a function of Heat Transfer Coefficient at Atmospheric Pressure, System Pressure & Standard Atmospheric Pressure. The modified heat transfer coefficient is affected by a number of factors, including the fluid flow velocity, the fluid properties, the surface roughness, and the presence of any fouling. In general, the modified heat transfer coefficient increases with increasing fluid flow velocity and decreasing surface roughness and is represented as h_p = (h₁)*((p_s/p₁)^(0.4)) or Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4)). Heat Transfer Coefficient at Atmospheric Pressure is the heat transferred per unit area per kelvin, System Pressure is the pressure that is being exerted on the system & Standard Atmospheric Pressure is the pressure that is being exerted on the system by the atmosphere.

How to calculate Modified Heat Transfer Coefficient under Influence of Pressure?

The Modified Heat Transfer Coefficient under Influence of Pressure formula is a function of Heat Transfer Coefficient at Atmospheric Pressure, System Pressure & Standard Atmospheric Pressure. The modified heat transfer coefficient is affected by a number of factors, including the fluid flow velocity, the fluid properties, the surface roughness, and the presence of any fouling. In general, the modified heat transfer coefficient increases with increasing fluid flow velocity and decreasing surface roughness is calculated using Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4)). To calculate Modified Heat Transfer Coefficient under Influence of Pressure, you need Heat Transfer Coefficient at Atmospheric Pressure (h₁), System Pressure (p_s) & Standard Atmospheric Pressure (p₁). With our tool, you need to enter the respective value for Heat Transfer Coefficient at Atmospheric Pressure, System Pressure & Standard Atmospheric Pressure and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search