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Lighting Calculations for PELMATP

This document provides sample lighting calculations for a shopping mall project. It includes general project information like the average maintained illuminance of 400 lux or 37.17 fc. It also includes lamp and luminaire data for a 26W TC-D compact fluorescent lamp and 200mm downlight luminaire with a light output of 1800 lumens and 50% light efficiency. The calculations involve determining the room cavity ratio based on the length, width and height provided, and obtaining the effective cavity reflectance from the reflectance values given for the ceiling, walls and floor.

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Hansika Rajapaksha
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267 views1 page

Lighting Calculations for PELMATP

This document provides sample lighting calculations for a shopping mall project. It includes general project information like the average maintained illuminance of 400 lux or 37.17 fc. It also includes lamp and luminaire data for a 26W TC-D compact fluorescent lamp and 200mm downlight luminaire with a light output of 1800 lumens and 50% light efficiency. The calculations involve determining the room cavity ratio based on the length, width and height provided, and obtaining the effective cavity reflectance from the reflectance values given for the ceiling, walls and floor.

Uploaded by

Hansika Rajapaksha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Sample Calculations Sample Calculations

Sample Calculation 3. Given are the following :


General Information:
Project Identification: Shopping Mall
Width = 15 m
Average maintained Illuminance: 400 lux or 400 lux /1lux x 10.76fc
Length = 100 m
= 37.17 fc
Ceiling height = 3.5 m
Lamp data: 26W TC-D (compact fluorescent lamp)
Desired Illumination = 400 lux
Lamp flux: 1800 lumen (as per manufacturer’s data)
Type of Luminaire = 200mf Downlight w/ 26W TC-D Lamp
Luminaire data:
Manufacturer: Zumtobel Staff (Fumaco)
Model No: Panos HG 2/26W TC-D VVG 200
ñw = 50%

Module 4 –Lighting Calculations Philippine Efficient Lighting Market Module 4 –Lighting Calculations Philippine Efficient Lighting Market
Transformation Project (PELMATP) Transformation Project (PELMATP)

Sample Calculations Sample Calculations


Selection of Coefficient of Utilization:
Step 2: Determine Cavity Ratio

Step 1: Fill in all information in sketch If from manufacturer’s data, CU table are given based on
Room Cavity Ratio

L (Length) = 100 m

W (width) = 15 m

h (height) = 3.5 m

Module 4 –Lighting Calculations Philippine Efficient Lighting Market Module 4 –Lighting Calculations Philippine Efficient Lighting Market
Transformation Project (PELMATP) Transformation Project (PELMATP)

Sample Calculations Sample Calculations


If from manufacturer's data, CU table are given based on Step 3: Obtain effective cavity reflectance:
Room Index

Ceiling : cc = 70%
where:

Wall : w = 50%

Floor : fc = 20%

Module 4 –Lighting Calculations Philippine Efficient Lighting Market Module 4 –Lighting Calculations Philippine Efficient Lighting Market
Transformation Project (PELMATP) Transformation Project (PELMATP)

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