Sai Venkata Phanindra Chary Arendra
Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology (VNRVJIET), Hyderabad
Sai Venkata Phanindra Chary Arendra has created this Calculator and 50+ more calculators!
Vinay Mishra
Indian Institute for Aeronautical Engineering and Information Technology (IIAEIT), Pune
Vinay Mishra has verified this Calculator and 100+ more calculators!

11 Other formulas that you can solve using the same Inputs

Radial Heat flowing through a cylinder
Heat=(Thermal Conductivity*2*pi*(outer radius-inner radius)*Temperature Difference*length of cylinder)/((ln(outer radius/inner radius))*(outer radius-inner radius)) GO
Heat Transfer by Conduction at Base
Heat transfer=((Thermal Conductivity*Cross sectional area*Perimeter*Heat transfer coefficient)^0.5)*(Base Temperature-Ambient Temperature) GO
Heat Transfer Through Plane Wall or Surface
Heat Rate=-Thermal Conductivity*Original cross sectional area*(Outside Temperature-Inside Temperature)/Width GO
Critical Radius of Insulation of a Sphere
Critical Radius of Insulation=2*Thermal Conductivity/External convection heat transfer coefficient GO
Critical Radius of Insulation of a Cylinder
Critical Radius of Insulation=Thermal Conductivity/External convection heat transfer coefficient GO
One dimensional heat flux
Heat flux= -(Thermal Conductivity/Wall thickness)*(Temperature of wall 2-Temperature of wall 1) GO
Capacitance of a Cylindrical Capacitor
Capacitance=dielectric constant*length of cylinder/(2*[Coulomb]*(outer radius-inner radius)) GO
Critical Thickness of Insulation for a Cylinder
Critical Thickness of Insulation=Thermal Conductivity/Heat transfer coefficient GO
Prandtl Number
Prandtl number=Specific Heat Capacity*Dynamic viscosity/Thermal Conductivity GO
Thermal Diffusivity
Thermal Diffusivity=Thermal Conductivity/(Density*Specific Heat Capacity) GO
Heat flux
Heat flux=Thermal Conductivity*(Temperature/Length) GO

7 Other formulas that calculate the same Output

Heat flow rate through a cylindrical composite wall of 3 layers
heat flow rate=(inner surface temperature -outer surface temperature)/(((ln(radius2/radius1))/(2*pi*thermal conductivity 1*length of cylinder))+((ln(radius 3/radius2))/(2*pi*thermal conductivity 2*length of cylinder))+((ln(radius4/radius 3))/(2*pi*thermal conductivity 3*length of cylinder))) GO
Heat flow rate through a cylindrical composite wall of 2 layers
heat flow rate=(inner surface temperature -outer surface temperature)/(((ln(radius2/radius1))/(2*pi*thermal conductivity 1*length of cylinder))+((ln(radius 3/radius2))/(2*pi*thermal conductivity 2*length of cylinder))) GO
Heat flow rate through a spherical composite wall of 2 layers in series
heat flow rate=(inner surface temperature -outer surface temperature)/(((1/(4*pi*thermal conductivity 1))*((1/radius1)-(1/radius2)))+((1/(4*pi*thermal conductivity 2))*((1/radius2)-(1/radius 3)))) GO
Heat flow rate through a composite wall of 3 layers in series
heat flow rate=(inner surface temperature -outer surface temperature)/((length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area))+(length 3/(thermal conductivity 3*Area))) GO
Heat flow rate through a composite wall of 2 layers in series
heat flow rate=(inner surface temperature -outer surface temperature)/((length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area))) GO
Heat flow rate through a spherical wall
heat flow rate=(inner surface temperature -outer surface temperature)/((radius2-radius1)/(4*pi*radius1*radius2*Thermal Conductivity)) GO
Heat flow required
heat flow rate=Area*Overall Heat Transfer Coefficient*Logarithmic mean temperature difference GO

Heat flow rate through a cylindrical wall Formula

heat flow rate=(inner surface temperature -outer surface temperature)/((ln(radius2/radius1))/(2*pi*Thermal Conductivity*length of cylinder))
Q=(Ti-To)/((ln(r2/r1))/(2*pi*k*l))
More formulas
Thermal resistance for radial heat conduction offered by a cylinder wall GO
Total thermal resistance of 2 cylindrical resistances connected in series. GO
Total thermal resistance of 3 cylindrical resistances connected in series GO
Thermal conductivity of a cylindrical wall for a given temperature difference GO
Length of the cylindrical wall for a given heat flow rate GO
Outer surface temperature of a cylindrical wall for a given heat flow rate GO
Inner surface temperature of a cylindrical wall for a given heat flow rate GO
Heat flow rate through a cylindrical composite wall of 2 layers GO
Outer surface temperature of the cylindrical composite wall of 2 layers GO
Heat flow rate through a cylindrical composite wall of 3 layers GO
Total thermal resistance of a cylindrical wall with convection either side GO
Convection resistance for a cylindrical layer GO
Thickness of the cylindrical wall to maintain a given temperature difference GO

What is heat flow rate?

The rate of heat flow is the amount of heat that is transferred per unit of time in some material, usually measured in watt. Heat is the flow of thermal energy driven by thermal non-equilibrium.

How to Calculate Heat flow rate through a cylindrical wall?

Heat flow rate through a cylindrical wall calculator uses heat flow rate=(inner surface temperature -outer surface temperature)/((ln(radius2/radius1))/(2*pi*Thermal Conductivity*length of cylinder)) to calculate the heat flow rate, The Heat flow rate through a cylindrical wall formula is defined as the rate of heat flow through a cylindrical wall in the radial direction when inner and outer surface temperatures, length of the cylinder, inner and outer radii and thermal conductivity are known. heat flow rate and is denoted by Q symbol.

How to calculate Heat flow rate through a cylindrical wall using this online calculator? To use this online calculator for Heat flow rate through a cylindrical wall, enter inner surface temperature (Ti), outer surface temperature (To), radius2 (r2), radius1 (r1), Thermal Conductivity (k) and length of cylinder (l) and hit the calculate button. Here is how the Heat flow rate through a cylindrical wall calculation can be explained with given input values -> NaN = (1-1)/((ln(1/1))/(2*pi*10*1)).

FAQ

What is Heat flow rate through a cylindrical wall?
The Heat flow rate through a cylindrical wall formula is defined as the rate of heat flow through a cylindrical wall in the radial direction when inner and outer surface temperatures, length of the cylinder, inner and outer radii and thermal conductivity are known and is represented as Q=(Ti-To)/((ln(r2/r1))/(2*pi*k*l)) or heat flow rate=(inner surface temperature -outer surface temperature)/((ln(radius2/radius1))/(2*pi*Thermal Conductivity*length of cylinder)). Inner surface temperature is the temperature at the inner surface of the wall (either plane wall or cylindrical wall or spherical wall, etc.), outer surface temperature is the temperature at the outer surface of the wall (either plane wall or cylindrical wall or spherical wall, etc.) , radius2 is the radius of the second concentric circle or circle, Radius1 is the distance from the centre of the concentric circles to any point on the first/smallest concentric circle or the radius of the first circle, Thermal Conductivity is the rate at which heat passes through a specified material, expressed as the amount of heat that flows per unit time through a unit area with a temperature gradient of one degree per unit distance and The length of cylinder.
How to calculate Heat flow rate through a cylindrical wall?
The Heat flow rate through a cylindrical wall formula is defined as the rate of heat flow through a cylindrical wall in the radial direction when inner and outer surface temperatures, length of the cylinder, inner and outer radii and thermal conductivity are known is calculated using heat flow rate=(inner surface temperature -outer surface temperature)/((ln(radius2/radius1))/(2*pi*Thermal Conductivity*length of cylinder)). To calculate Heat flow rate through a cylindrical wall, you need inner surface temperature (Ti), outer surface temperature (To), radius2 (r2), radius1 (r1), Thermal Conductivity (k) and length of cylinder (l). With our tool, you need to enter the respective value for inner surface temperature , outer surface temperature, radius2, radius1, Thermal Conductivity and length of cylinder 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 flow rate?
In this formula, heat flow rate uses inner surface temperature , outer surface temperature, radius2, radius1, Thermal Conductivity and length of cylinder. We can use 7 other way(s) to calculate the same, which is/are as follows -
  • heat flow rate=(inner surface temperature -outer surface temperature)/((length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area)))
  • heat flow rate=(inner surface temperature -outer surface temperature)/((length 1/(thermal conductivity 1*Area))+(length 2/(thermal conductivity 2*Area))+(length 3/(thermal conductivity 3*Area)))
  • heat flow rate=(inner surface temperature -outer surface temperature)/(((ln(radius2/radius1))/(2*pi*thermal conductivity 1*length of cylinder))+((ln(radius 3/radius2))/(2*pi*thermal conductivity 2*length of cylinder)))
  • heat flow rate=(inner surface temperature -outer surface temperature)/(((ln(radius2/radius1))/(2*pi*thermal conductivity 1*length of cylinder))+((ln(radius 3/radius2))/(2*pi*thermal conductivity 2*length of cylinder))+((ln(radius4/radius 3))/(2*pi*thermal conductivity 3*length of cylinder)))
  • heat flow rate=(inner surface temperature -outer surface temperature)/((radius2-radius1)/(4*pi*radius1*radius2*Thermal Conductivity))
  • heat flow rate=(inner surface temperature -outer surface temperature)/(((1/(4*pi*thermal conductivity 1))*((1/radius1)-(1/radius2)))+((1/(4*pi*thermal conductivity 2))*((1/radius2)-(1/radius 3))))
  • heat flow rate=Area*Overall Heat Transfer Coefficient*Logarithmic mean temperature difference
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