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Cooling load from lighting Formula

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Cooling load from lighting is cooling load due to heat gain from lighting. Check FAQs

Q l = 3.4 \cdot W \cdot BF \cdot CLF L

Q_l - Cooling Load from Lighting?W - Lighting Capacity?BF - Ballast Factor?CLF_L - Cooling Load Factor for Lighting?

Cooling load from lighting Example

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Here is how the Cooling load from lighting equation looks like with Values.

Here is how the Cooling load from lighting equation looks like with Units.

Here is how the Cooling load from lighting equation looks like.

2203.2 = 3.4 \cdot 45 \cdot 1.2 \cdot 12

2203.2Btu/h = 3.4 \cdot 45Btu/h \cdot 1.2 \cdot 12

2203.2 = 3.4 \cdot 45 \cdot 1.2 \cdot 12

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Cooling load from lighting Solution

Follow our step by step solution on how to calculate Cooling load from lighting?

FIRST Step Consider the formula

Q l = 3.4 \cdot W \cdot BF \cdot CLF L

Next Step Substitute values of Variables

∴

Q l = 3.4 \cdot 45Btu/h \cdot 1.2 \cdot 12

Next Step Convert Units

∴

Q l = 3.4 \cdot 13.1882W \cdot 1.2 \cdot 12

Next Step Prepare to Evaluate

∴

Q l = 3.4 \cdot 13.1882 \cdot 1.2 \cdot 12

Next Step Evaluate

∴

Q l = 645.69418180345W

Next Step Convert to Output's Unit

∴

Q l = 2203.19999999999Btu/h

LAST Step Rounding Answer

∴

Q l = 2203.2Btu/h

Cooling load from lighting Formula Elements

Variables

Cooling Load from Lighting

Cooling load from lighting is cooling load due to heat gain from lighting.

Symbol: Q_l

Measurement: PowerUnit: Btu/h

Note: Value can be positive or negative.

Formulas to find Cooling Load from Lighting

Lighting Capacity

Lighting capacity is W is the rated capacity of the lights in use.

Symbol: W

Measurement: PowerUnit: Btu/h

Note: Value can be positive or negative.

Formulas to find Lighting Capacity

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.

Symbol: BF

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Ballast Factor

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.

Symbol: CLF_L

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Cooling Load Factor for Lighting

Other formulas in Cooling Loads category

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

Q = U o \cdot A r \cdot CLTD c

Go Corrected Cooling Load Temperature Difference given Cooling Load Temperature Difference

CLTD c = CL Δt + LM + (78 - t r) + (t a - 85)

Go Average outside temperature on design day

t o = t od - (\frac{DR}{2})

Go Total heat removed from ventilation air

Q t = Q s + Q lv

How to Evaluate Cooling load from lighting?

Cooling load from lighting evaluator uses Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting to evaluate the Cooling Load from Lighting, Cooling load from lighting formula is defined as the total heat gain generated by artificial lighting systems in a building, taking into account the wattage of the lighting, the building's thermal characteristics, and the type of lighting fixtures used, to determine the required cooling capacity of the air conditioning system. Cooling Load from Lighting is denoted by Q_l symbol.

How to evaluate Cooling load from lighting using this online evaluator? To use this online evaluator for Cooling load from lighting, enter Lighting Capacity (W), Ballast Factor (BF) & Cooling Load Factor for Lighting (CLF_L) and hit the calculate button.

FAQs on Cooling load from lighting

What is the formula to find Cooling load from lighting?

The formula of Cooling load from lighting is expressed as Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting. Here is an example- 7517.63 = 3.4*13.1881981577502*1.2*12.

How to calculate Cooling load from lighting?

With Lighting Capacity (W), Ballast Factor (BF) & Cooling Load Factor for Lighting (CLF_L) we can find Cooling load from lighting using the formula - Cooling Load from Lighting = 3.4*Lighting Capacity*Ballast Factor*Cooling Load Factor for Lighting.

Can the Cooling load from lighting be negative?

Yes, the Cooling load from lighting, measured in Power can be negative.

Which unit is used to measure Cooling load from lighting?

Cooling load from lighting is usually measured using the Btu (IT) per Hour[Btu/h] for Power. Watt[Btu/h], Kilowatt[Btu/h], Milliwatt[Btu/h] are the few other units in which Cooling load from lighting can be measured.

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Cooling load from lighting Formula

Cooling load from lighting Example

Cooling load from lighting Solution

Cooling load from lighting Formula Elements

Other formulas in Cooling Loads category

How to Evaluate Cooling load from lighting?

FAQs on Cooling load from lighting

Variable Name