FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Total Thermal Resistance Formula

Fx Copy

LaTeX Copy

Total Thermal Resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Check FAQs

ΣR thermal = \frac{1}{U overall \cdot A}

ΣR_thermal - Total Thermal Resistance?U_overall - Overall Heat Transfer Coefficient?A - Area?

Total Thermal Resistance Example

With values

With units

Only example

Here is how the Total Thermal Resistance equation looks like with Values.

Here is how the Total Thermal Resistance equation looks like with Units.

Here is how the Total Thermal Resistance equation looks like.

0.0033 = \frac{1}{6 \cdot 50}

0.0033K/W = \frac{1}{6W/m²*K \cdot 50m²}

0.0033 = \frac{1}{6 \cdot 50}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Chemical Engineering » Category

Heat Transfer » fx Total Thermal Resistance

Total Thermal Resistance Solution

Follow our step by step solution on how to calculate Total Thermal Resistance?

FIRST Step Consider the formula

ΣR thermal = \frac{1}{U overall \cdot A}

Next Step Substitute values of Variables

∴

ΣR thermal = \frac{1}{6W/m²*K \cdot 50m²}

Next Step Prepare to Evaluate

∴

ΣR thermal = \frac{1}{6 \cdot 50}

Next Step Evaluate

∴

ΣR thermal = 0.00333333333333333K/W

LAST Step Rounding Answer

∴

ΣR thermal = 0.0033K/W

Total Thermal Resistance Formula Elements

Variables

Total Thermal Resistance

Total Thermal Resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow.

Symbol: ΣR_thermal

Measurement: Thermal ResistanceUnit: K/W

Note: Value should be greater than 0.

Formulas to find Total Thermal Resistance

Overall Heat Transfer Coefficient

The Overall Heat Transfer Coefficient is a measure of the overall ability of a series of conductive and convective barriers to transfer heat.

Symbol: U_overall

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value should be greater than 0.

Formulas to find Overall Heat Transfer Coefficient

Area

The area is the amount of two-dimensional space taken up by an object.

Symbol: A

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Area

Other formulas in Thermal Resistance category

Go Biot Number using Characteristic Length

Bi = \frac{h transfer \cdot L char}{k fin}

Go Correction Length for Cylindrical Fin with Non-Adiabatic Tip

L cylindrical = L fin + (\frac{d fin}{4})

Go Correction Length for Square Fin with Non-Adiabatic Tip

L sqaure = L fin + (\frac{w fin}{4})

Go Correction Length for Thin Rectangular Fin with Non-Adiabatic Tip

L rectangular = L fin + (\frac{t fin}{2})

How to Evaluate Total Thermal Resistance?

Total Thermal Resistance evaluator uses Total Thermal Resistance = 1/(Overall Heat Transfer Coefficient*Area) to evaluate the Total Thermal Resistance, The Total Thermal Resistance formula is defined as a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Total Thermal Resistance is denoted by ΣR_thermal symbol.

How to evaluate Total Thermal Resistance using this online evaluator? To use this online evaluator for Total Thermal Resistance, enter Overall Heat Transfer Coefficient (U_overall) & Area (A) and hit the calculate button.

FAQs on Total Thermal Resistance

What is the formula to find Total Thermal Resistance?

The formula of Total Thermal Resistance is expressed as Total Thermal Resistance = 1/(Overall Heat Transfer Coefficient*Area). Here is an example- 0.003333 = 1/(6*50).

How to calculate Total Thermal Resistance?

With Overall Heat Transfer Coefficient (U_overall) & Area (A) we can find Total Thermal Resistance using the formula - Total Thermal Resistance = 1/(Overall Heat Transfer Coefficient*Area).

Can the Total Thermal Resistance be negative?

No, the Total Thermal Resistance, measured in Thermal Resistance cannot be negative.

Which unit is used to measure Total Thermal Resistance?

Total Thermal Resistance is usually measured using the Kelvin per Watt[K/W] for Thermal Resistance. Degree Fahrenheit hour per Btu (IT)[K/W], Degree Fahrenheit Hour per Btu (th)[K/W], Kelvin per Milliwatt[K/W] are the few other units in which Total Thermal Resistance can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Total Thermal Resistance Formula

Total Thermal Resistance Example

Total Thermal Resistance Solution

Total Thermal Resistance Formula Elements

Other formulas in Thermal Resistance category

How to Evaluate Total Thermal Resistance?

FAQs on Total Thermal Resistance

Variable Name