Heat Gain through Partition, Floor or Ceiling Calculator

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✖Heat Transfer Coefficient for Interior Structure is a measure of the overall ability of a series of conductive and convective barriers to transfer heat.ⓘ Heat Transfer Coefficient for Interior Structure [U_i]			+10% -10%
✖Surface area of duct is the sum of the areas of all faces of the duct.ⓘ Surface Area of Duct [SA_Duct]			+10% -10%
✖Cooling Load Temperature Difference is an equivalent temperature difference used for calculating the instantaneous external cooling load across a wall or roof.ⓘ Cooling Load Temperature Difference [CLTD]			+10% -10%

✖Heat gain is the term given to a temperature rise within a space due to heat from the sun (solar radiation).ⓘ Heat Gain through Partition, Floor or Ceiling [Q_gain]

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Heat Gain through Partition, Floor or Ceiling

Formula

`"Q"_{"gain"} = "U"_{"i"}*"SA"_{"Duct"}*"CLTD"`

Example

`"87960.6Btu/h"="1.5BTU(IT)/h*ft²*°F"*"120ft²"*"29°F"`

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Heat Gain through Partition, Floor or Ceiling Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Gain = Heat Transfer Coefficient for Interior Structure*Surface Area of Duct*Cooling Load Temperature Difference
Q_gain = U_i*SA_Duct*CLTD
This formula uses 4 Variables

Variables Used

Heat Gain - (Measured in Watt) - Heat gain is the term given to a temperature rise within a space due to heat from the sun (solar radiation).
Heat Transfer Coefficient for Interior Structure - (Measured in Watt per Square Meter per Kelvin) - Heat Transfer Coefficient for Interior Structure is a measure of the overall ability of a series of conductive and convective barriers to transfer heat.
Surface Area of Duct - (Measured in Square Meter) - Surface area of duct is the sum of the areas of all faces of the duct.
Cooling Load Temperature Difference - (Measured in Kelvin) - Cooling Load Temperature Difference is an equivalent temperature difference used for calculating the instantaneous external cooling load across a wall or roof.

STEP 1: Convert Input(s) to Base Unit

Heat Transfer Coefficient for Interior Structure: 1.5 Btu (IT) per Hour per Square Foot per Fahrenheit --> 8.51739501160224 Watt per Square Meter per Kelvin (Check conversion here)
Surface Area of Duct: 120 Square Foot --> 11.1483648000892 Square Meter (Check conversion here)
Cooling Load Temperature Difference: 29 Fahrenheit --> 271.483327150345 Kelvin (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_gain = U_i*SA_Duct*CLTD --> 8.51739501160224*11.1483648000892*271.483327150345

Evaluating ... ...

Q_gain = 25778.7065878854

STEP 3: Convert Result to Output's Unit

25778.7065878854 Watt -->87960.5979967118 Btu (IT) per Hour (Check conversion here)

FINAL ANSWER

87960.5979967118 ≈ 87960.6 Btu (IT) per Hour <-- Heat Gain

(Calculation completed in 00.004 seconds)

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Created by Rudrani Tidke

Cummins College of Engineering for Women (CCEW), Pune

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Verified by Rushi Shah

K J Somaiya College of Engineering (K J Somaiya), Mumbai

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< 12 Cooling Loads Calculators

Corrected Cooling Load Temperature Difference given Cooling Load Temperature Difference

Go Corrected cooling load Temperature difference = Cooling Load Temperature Difference+Latitude Month Correction+(78-Room Temperature)+(Average Outside Temperature-85)

Solar radiation cooling load for glass

Go Solar Radiation Cooling Load for Glass = Maximum Solar Heat Gain Factor*Area of Glass*Shading coefficient*Cooling Load Factor for Glass

Duct Heat Gain

Go Duct Heat Gain = Overall Heat Transfer Coefficient*Surface Area of Duct*Temperature change between Outdoor and Inside air

Heat Gain through Partition, Floor or Ceiling

Go Heat Gain = Heat Transfer Coefficient for Interior Structure*Surface Area of Duct*Cooling Load Temperature Difference

Cooling load for roof, wall or glass given Corrected Cooling Load Temperature Difference

Go Cooling load = Overall Heat Transfer Coefficient*Area of Roof*Corrected cooling load Temperature difference

Total heat removed from ventilation air

Go Total Heat removed from Ventilation Air = Sensible cooling loads from ventilation air+Latent cooling loads from ventilation air

Cooling load from lighting

Go Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting

Average outside temperature on design day

Go Outside Temperature = Outside design dry Bulb Temperature-(Daily temperature range/2)

Air infiltration rate into room (CFM)

Go Air Infiltration Rate into Room = Number of air changes per hour*(Room Volume/60)

Total Cooling Load due to Equipment

Go Total Cooling Load = Sensible Cooling Load*Latent Factor

Equipment Total Cooling Load

Go Total Cooling Load = Sensible Cooling Load*Latent Factor

Cooling load Heat Gain through windows

Go Sensible Cooling Load = Area of Glass*Glass Load Factor

Heat Gain through Partition, Floor or Ceiling Formula

Heat Gain = Heat Transfer Coefficient for Interior Structure*Surface Area of Duct*Cooling Load Temperature Difference
Q_gain = U_i*SA_Duct*CLTD

What causes heat gain?

Heat gain, also known as thermal or solar gain, occurs in several ways: Conduction, when heat travels through walls and ceilings. Radiation, when sunlight penetrates windows and skylights. Infiltration, where warm air and moisture penetrate through cracks in walls.

How to Calculate Heat Gain through Partition, Floor or Ceiling?

Heat Gain through Partition, Floor or Ceiling calculator uses Heat Gain = Heat Transfer Coefficient for Interior Structure*Surface Area of Duct*Cooling Load Temperature Difference to calculate the Heat Gain, The Heat Gain through Partition, Floor or Ceiling formula is defined as the term given to a temperature rise within a space due to heat from the sun (solar radiation), heat from surfaces (long-wave infrared radiation), heat originating from other sources within the space (such as heating appliances, ovens, people, mechanical systems, lights and computers) and so on. Heat Gain is denoted by Q_gain symbol.

How to calculate Heat Gain through Partition, Floor or Ceiling using this online calculator? To use this online calculator for Heat Gain through Partition, Floor or Ceiling, enter Heat Transfer Coefficient for Interior Structure (U_i), Surface Area of Duct (SA_Duct) & Cooling Load Temperature Difference (CLTD) and hit the calculate button. Here is how the Heat Gain through Partition, Floor or Ceiling calculation can be explained with given input values -> 300134 = 8.51739501160224*11.1483648000892*271.483327150345.

FAQ

What is Heat Gain through Partition, Floor or Ceiling?

The Heat Gain through Partition, Floor or Ceiling formula is defined as the term given to a temperature rise within a space due to heat from the sun (solar radiation), heat from surfaces (long-wave infrared radiation), heat originating from other sources within the space (such as heating appliances, ovens, people, mechanical systems, lights and computers) and so on and is represented as Q_gain = U_i*SA_Duct*CLTD or Heat Gain = Heat Transfer Coefficient for Interior Structure*Surface Area of Duct*Cooling Load Temperature Difference. Heat Transfer Coefficient for Interior Structure is a measure of the overall ability of a series of conductive and convective barriers to transfer heat, Surface area of duct is the sum of the areas of all faces of the duct & Cooling Load Temperature Difference is an equivalent temperature difference used for calculating the instantaneous external cooling load across a wall or roof.

How to calculate Heat Gain through Partition, Floor or Ceiling?

The Heat Gain through Partition, Floor or Ceiling formula is defined as the term given to a temperature rise within a space due to heat from the sun (solar radiation), heat from surfaces (long-wave infrared radiation), heat originating from other sources within the space (such as heating appliances, ovens, people, mechanical systems, lights and computers) and so on is calculated using Heat Gain = Heat Transfer Coefficient for Interior Structure*Surface Area of Duct*Cooling Load Temperature Difference. To calculate Heat Gain through Partition, Floor or Ceiling, you need Heat Transfer Coefficient for Interior Structure (U_i), Surface Area of Duct (SA_Duct) & Cooling Load Temperature Difference (CLTD). With our tool, you need to enter the respective value for Heat Transfer Coefficient for Interior Structure, Surface Area of Duct & Cooling Load Temperature Difference and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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