Cooling load from lighting Calculator

⤿

Air Conditioning Systems

Air Refrigeration Cycles

Air Refrigeration Systems

Ducts

Enthalpy of Saturated Air

Heat Transfer

Psychrometry

Refrigerant Compressors

Thermodynamics Factor

⤿

Cooling Loads

Heat Gain

Sensible Cooling Loads

✖Lighting capacity is W is the rated capacity of the lights in use.ⓘ Lighting Capacity [W]			+10% -10%
✖The Ballast Factor is a number, typically between 0.70 and 1.2, that tells you how much light a lamp will emit with that ballast.ⓘ Ballast Factor [BF]			+10% -10%
✖Cooling Load Factor for Lighting is used to represent the temperature difference between indoor and outdoor air with the inclusion of the heating.ⓘ Cooling Load Factor for Lighting [CLF_L]			+10% -10%

✖Cooling load from lighting is cooling load due to heat gain from lighting.ⓘ Cooling load from lighting [Q_lighting]

⎘ Copy

👎

Formula

✖

Cooling load from lighting

Formula

`"Q"_{"lighting"} = 3.4*"W"*"BF"*"CLF"_{"L"}`

Example

`"2203.2Btu/h"=3.4*"45Btu/h"*"1.2"*"12"`

Calculator

LaTeX

Reset

👍

Download Refrigeration and Air Conditioning Formula PDF PDF Image

Cooling load from lighting Solution

STEP 0: Pre-Calculation Summary

Formula Used

Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting
Q_lighting = 3.4*W*BF*CLF_L
This formula uses 4 Variables

Variables Used

Cooling Load from Lighting - (Measured in Watt) - Cooling load from lighting is cooling load due to heat gain from lighting.
Lighting Capacity - (Measured in Watt) - Lighting capacity is W is the rated capacity of the lights in use.
Ballast Factor - The Ballast Factor is a number, typically between 0.70 and 1.2, that tells you how much light a lamp will emit with that ballast.
Cooling Load Factor for Lighting - Cooling Load Factor for Lighting is used to represent the temperature difference between indoor and outdoor air with the inclusion of the heating.

STEP 1: Convert Input(s) to Base Unit

Lighting Capacity: 45 Btu (IT) per Hour --> 13.1881981577502 Watt (Check conversion here)
Ballast Factor: 1.2 --> No Conversion Required
Cooling Load Factor for Lighting: 12 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_lighting = 3.4*W*BF*CLF_L --> 3.4*13.1881981577502*1.2*12

Evaluating ... ...

Q_lighting = 645.69418180345

STEP 3: Convert Result to Output's Unit

645.69418180345 Watt -->2203.19999999999 Btu (IT) per Hour (Check conversion here)

FINAL ANSWER

2203.19999999999 ≈ 2203.2 Btu (IT) per Hour <-- Cooling Load from Lighting

(Calculation completed in 00.004 seconds)

You are here -

Home » Physics » Refrigeration and Air Conditioning » Air Conditioning Systems » Cooling Loads » Cooling load from lighting

Credits

Created by Rudrani Tidke

Cummins College of Engineering for Women (CCEW), Pune

Rudrani Tidke has created this Calculator and 100+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Calculator and 2500+ more calculators!

< 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

Sensible Cooling load from ventilation air

Go Sensible cooling loads from ventilation air = 1.1*Air ventilation rate in Cubic foot per minute*Temperature change between Outdoor and Inside air

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

Sensible Cooling Load due to infiltrating air

Go Sensible Cooling Load = 1.1*Air Infiltration Rate into Room*Temperature change between Outdoor and Inside air

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)

Sensible Cooling load due to Equipment

Go Sensible Cooling Load = Total Cooling Load/Latent Factor

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 from lighting Formula

Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting
Q_lighting = 3.4*W*BF*CLF_L

What is the difference between heating load and cooling load?

The heating load is the amount of heat energy that would need to be added to a space to maintain the temperature in an acceptable range. The cooling load is the amount of heat energy that would need to be removed from a space (cooling) to maintain the temperature in an acceptable range.

How to Calculate Cooling load from lighting?

Cooling load from lighting calculator uses Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting to calculate the Cooling Load from Lighting, Cooling load from lighting formula is defined as Heat generated in the space or room by lightings in a room. Cooling Load from Lighting is denoted by Q_lighting symbol.

How to calculate Cooling load from lighting using this online calculator? To use this online calculator for Cooling load from lighting, enter Lighting Capacity (W), Ballast Factor (BF) & Cooling Load Factor for Lighting (CLF_L) and hit the calculate button. Here is how the Cooling load from lighting calculation can be explained with given input values -> 7517.63 = 3.4*13.1881981577502*1.2*12.

FAQ

What is Cooling load from lighting?

Cooling load from lighting formula is defined as Heat generated in the space or room by lightings in a room and is represented as Q_lighting = 3.4*W*BF*CLF_L or Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting. Lighting capacity is W is the rated capacity of the lights in use, The Ballast Factor is a number, typically between 0.70 and 1.2, that tells you how much light a lamp will emit with that ballast & Cooling Load Factor for Lighting is used to represent the temperature difference between indoor and outdoor air with the inclusion of the heating.

How to calculate Cooling load from lighting?

Cooling load from lighting formula is defined as Heat generated in the space or room by lightings in a room is calculated using Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting. To calculate Cooling load from lighting, you need Lighting Capacity (W), Ballast Factor (BF) & Cooling Load Factor for Lighting (CLF_L). With our tool, you need to enter the respective value for Lighting Capacity, Ballast Factor & Cooling Load Factor for Lighting and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search