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By Pass Factor is the inability of a coil to cool or heat the air to its temperature. Check FAQs
BPF=exp(-UAcmairc)
BPF - By Pass Factor?U - Overall Heat Transfer Coefficient?Ac - Surface Area of Coil?mair - Mass of Air?c - Specific Heat Capacity?

By-Pass Factor of Cooling Coil Example

With values
With units
Only example

Here is how the By-Pass Factor of Cooling Coil equation looks like with Values.

Here is how the By-Pass Factor of Cooling Coil equation looks like with Units.

Here is how the By-Pass Factor of Cooling Coil equation looks like.

0.8803Edit=exp(-50Edit64Edit6Edit4.184Edit)
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By-Pass Factor of Cooling Coil Solution

Follow our step by step solution on how to calculate By-Pass Factor of Cooling Coil?

FIRST Step Consider the formula
BPF=exp(-UAcmairc)
Next Step Substitute values of Variables
BPF=exp(-50W/m²*K646kg4.184kJ/kg*K)
Next Step Convert Units
BPF=exp(-50W/m²*K646kg4184J/(kg*K))
Next Step Prepare to Evaluate
BPF=exp(-506464184)
Next Step Evaluate
BPF=0.880320066293238
LAST Step Rounding Answer
BPF=0.8803

By-Pass Factor of Cooling Coil Formula Elements

Variables
Functions
By Pass Factor
By Pass Factor is the inability of a coil to cool or heat the air to its temperature.
Symbol: BPF
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Overall Heat Transfer Coefficient
Overall heat transfer coefficient is the overall convective heat transfer between a fluid medium (a fluid) and the surface (wall) flowed over by the fluid.
Symbol: U
Measurement: Heat Transfer CoefficientUnit: W/m²*K
Note: Value can be positive or negative.
Surface Area of Coil
The Surface Area of Coil is the total area of the coil through which any fluid passes.
Symbol: Ac
Measurement: AreaUnit:
Note: Value should be greater than 0.
Mass of Air
Mass of Air is both a property of air and a measure of its resistance to acceleration when a net force is applied.
Symbol: mair
Measurement: WeightUnit: kg
Note: Value should be greater than 0.
Specific Heat Capacity
Specific Heat Capacity is the heat required to raise the temperature of the unit mass of a given substance by a given amount.
Symbol: c
Measurement: Specific Heat CapacityUnit: kJ/kg*K
Note: Value can be positive or negative.
exp
n an exponential function, the value of the function changes by a constant factor for every unit change in the independent variable.
Syntax: exp(Number)

Other Formulas to find By Pass Factor

​Go By-Pass Factor of Heating Coil
BPF=exp(-UAcmairc)

Other formulas in By Pass Factor category

​Go Overall Heat Transfer Coefficient given By-Pass Factor
U=-ln(BPF)maircAc
​Go Surface Area of Coil given By-Pass Factor
Ac=-ln(BPF)maircU
​Go Mass of Air Passing over Coil given By-Pass Factor
mair=-(UAccln(BPF))
​Go Sensible Heat given Out by Coil using By-Pass Factor
SH=UAc(Tf-Ti)ln(1BPF)

How to Evaluate By-Pass Factor of Cooling Coil?

By-Pass Factor of Cooling Coil evaluator uses By Pass Factor = exp(-(Overall Heat Transfer Coefficient*Surface Area of Coil)/(Mass of Air*Specific Heat Capacity)) to evaluate the By Pass Factor, By-Pass Factor of Cooling Coil formula is defined as a measure of the proportion of air that bypasses the cooling coil in an air conditioning system, affecting the overall cooling performance and efficiency of the system. By Pass Factor is denoted by BPF symbol.

How to evaluate By-Pass Factor of Cooling Coil using this online evaluator? To use this online evaluator for By-Pass Factor of Cooling Coil, enter Overall Heat Transfer Coefficient (U), Surface Area of Coil (Ac), Mass of Air (mair) & Specific Heat Capacity (c) and hit the calculate button.

FAQs on By-Pass Factor of Cooling Coil

What is the formula to find By-Pass Factor of Cooling Coil?
The formula of By-Pass Factor of Cooling Coil is expressed as By Pass Factor = exp(-(Overall Heat Transfer Coefficient*Surface Area of Coil)/(Mass of Air*Specific Heat Capacity)). Here is an example- 0.88032 = exp(-(50*64)/(6*4184)).
How to calculate By-Pass Factor of Cooling Coil?
With Overall Heat Transfer Coefficient (U), Surface Area of Coil (Ac), Mass of Air (mair) & Specific Heat Capacity (c) we can find By-Pass Factor of Cooling Coil using the formula - By Pass Factor = exp(-(Overall Heat Transfer Coefficient*Surface Area of Coil)/(Mass of Air*Specific Heat Capacity)). This formula also uses Exponential Growth (exp) function(s).
What are the other ways to Calculate By Pass Factor?
Here are the different ways to Calculate By Pass Factor-
  • By Pass Factor=exp(-(Overall Heat Transfer Coefficient*Surface Area of Coil)/(Mass of Air*Specific Heat Capacity))OpenImg
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