Heat Transfer Coefficient Formula

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Heat Transfer Coefficient is the heat transferred per unit area per kelvin. Thus, area is included in the equation as it represents the area over which the transfer of heat takes place. Check FAQs
hcoeff=kmA𝜏
hcoeff - Heat Transfer Coefficient?k - Specific Heat?m - Mass?A - Thermal Contact Area?𝜏 - Thermal Time Constant?

Heat Transfer Coefficient Example

With values
With units
Only example

Here is how the Heat Transfer Coefficient equation looks like with Values.

Here is how the Heat Transfer Coefficient equation looks like with Units.

Here is how the Heat Transfer Coefficient equation looks like.

11.8333Edit=35.5Edit35Edit10.5Edit10Edit
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Heat Transfer Coefficient Solution

Follow our step by step solution on how to calculate Heat Transfer Coefficient?

FIRST Step Consider the formula
hcoeff=kmA𝜏
Next Step Substitute values of Variables
hcoeff=35.5J/(kg*K)35kg10.510s
Next Step Prepare to Evaluate
hcoeff=35.53510.510
Next Step Evaluate
hcoeff=11.8333333333333W/m²*K
LAST Step Rounding Answer
hcoeff=11.8333W/m²*K

Heat Transfer Coefficient Formula Elements

Variables
Heat Transfer Coefficient
Heat Transfer Coefficient is the heat transferred per unit area per kelvin. Thus, area is included in the equation as it represents the area over which the transfer of heat takes place.
Symbol: hcoeff
Measurement: Heat Transfer CoefficientUnit: W/m²*K
Note: Value should be greater than 0.
Specific Heat
Specific Heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.
Symbol: k
Measurement: Specific Heat CapacityUnit: J/(kg*K)
Note: Value should be greater than 0.
Mass
Mass is the quantity of matter in a body regardless of its volume or of any forces acting on it.
Symbol: m
Measurement: WeightUnit: kg
Note: Value should be greater than 0.
Thermal Contact Area
Thermal Contact Area is the interface region between two contacting surfaces where thermal conduction occurs.
Symbol: A
Measurement: AreaUnit:
Note: Value should be greater than 0.
Thermal Time Constant
Thermal Time Constant refers to the time it takes for a system or material to reach a certain percentage (usually 63.2%) of its final temperature after experiencing a change in heat input.
Symbol: 𝜏
Measurement: TimeUnit: s
Note: Value should be greater than 0.

Other formulas in Temperature Measurement category

​Go Thermal time constant
𝜏=kmAhcoeff
​Go Area of thermal contact
A=kmhcoeff𝜏

How to Evaluate Heat Transfer Coefficient?

Heat Transfer Coefficient evaluator uses Heat Transfer Coefficient = (Specific Heat*Mass)/(Thermal Contact Area*Thermal Time Constant) to evaluate the Heat Transfer Coefficient, The Heat transfer coefficient formula is defined as the proportionality constant between the heat flux and the thermodynamic driving force. Heat Transfer Coefficient is denoted by hcoeff symbol.

How to evaluate Heat Transfer Coefficient using this online evaluator? To use this online evaluator for Heat Transfer Coefficient, enter Specific Heat (k), Mass (m), Thermal Contact Area (A) & Thermal Time Constant (𝜏) and hit the calculate button.

FAQs on Heat Transfer Coefficient

What is the formula to find Heat Transfer Coefficient?
The formula of Heat Transfer Coefficient is expressed as Heat Transfer Coefficient = (Specific Heat*Mass)/(Thermal Contact Area*Thermal Time Constant). Here is an example- 14.66667 = (35.5*35)/(10.5*10).
How to calculate Heat Transfer Coefficient?
With Specific Heat (k), Mass (m), Thermal Contact Area (A) & Thermal Time Constant (𝜏) we can find Heat Transfer Coefficient using the formula - Heat Transfer Coefficient = (Specific Heat*Mass)/(Thermal Contact Area*Thermal Time Constant).
Can the Heat Transfer Coefficient be negative?
No, the Heat Transfer Coefficient, measured in Heat Transfer Coefficient cannot be negative.
Which unit is used to measure Heat Transfer Coefficient?
Heat Transfer Coefficient is usually measured using the Watt per Square Meter per Kelvin[W/m²*K] for Heat Transfer Coefficient. Watt per Square Meter per Celcius[W/m²*K], Joule per Second per Square Meter per Kelvin[W/m²*K], Kilocalorie (IT) per Hour per Square Foot per Celcius[W/m²*K] are the few other units in which Heat Transfer Coefficient can be measured.
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