Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
A 20 ft by 24 ft office has a 14 ft ceiling height, with room surface reflectances of 80% ceiling, 50% walls, and 20% floor. Technical information for the luminaire that you selected to light this space is shown below, and from that you have determined that each luminaire has 4500 lumens. The luminaires are pendant mounted and hang 2 ft below the ceiling. How many luminaires are needed to produce an average of 30 footcandles on the desks (30" AFF) in the office? Show your work and keep track of units as you set up and solve the equations. Specifically, show the values of the RCR and CU as part of your work.

A 20 ft by 24 ft office has a 14 ft ceiling height, with room surface reflectances of 80% ceiling, 50% walls, and 20% floor. Technical information for the luminaire that you selected to light this space is shown below, and from that you have determined that each luminaire has 4500 lumens. The luminaires are pendant mounted and hang 2 ft below the ceiling. How many luminaires are needed to produce an average of 30 footcandles on the desks (30" AFF) in the office? Show your work and keep track of units as you set up and solve the equations. Specifically, show the values of the RCR and CU as part of your work.

EBK ELECTRICAL WIRING RESIDENTIAL
EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN:9781337516549
Author:Simmons
Publisher:Simmons
Chapter7: Luminaires, Ballasts, And Lamps
Section: Chapter Questions
Problem 20R: Circle the correct answer for the following statements. a. When selecting a trim for a recessed...
See similar textbooks
icon
Related questions
Question
-) A 20 ft by 24 ft office has a 14 ft ceiling height, with room surface reflectances of 80% ceiling, 50% walls, and 20% floor. Technical information for the luminaire that you selected to light this space is shown below, and from that you have determined that each luminaire has 4500 lumens. The luminaires are pendant mounted and hang 2 ft below the ceiling. How many luminaires are needed to produce an average of 30 footcandles on the desks (30" AFF) in the office? Show your work and keep track of units as you set up and solve the equations. Specifically, show the values of the RCR and CU as part of your work.
Transcribed Image Text:-) A 20 ft by 24 ft office has a 14 ft ceiling height, with room surface reflectances of 80% ceiling, 50% walls, and 20% floor. Technical information for the luminaire that you selected to light this space is shown below, and from that you have determined that each luminaire has 4500 lumens. The luminaires are pendant mounted and hang 2 ft below the ceiling. How many luminaires are needed to produce an average of 30 footcandles on the desks (30" AFF) in the office? Show your work and keep track of units as you set up and solve the equations. Specifically, show the values of the RCR and CU as part of your work.
Catalog # Project LKW for This lomatice Comments Prepared by C2-30.1T5 APPEARATHO 4500 Lemens Efficiency 90.9% Test Report TL5:17895 Coefficients of Utilization AGA 0 NATDONI 2 9 Effective floor cavity reflectance 70 50 30 10 70 50 30 10 Zonal Lumen Summary Lumens Limp Fixture 5509 CORELITE™ 2009 10000 MAA D DE P Type Date Angle in Del PEN N!!! 3100 P 50 30 10 50 30 JE TE JE 57 55- 54 411 41 51 48 15 45 12 30 41 37 31 332 33:29 26 Luminance Data MODE 0 Dig 45 Dog CUSM 2810 14320 31 28 27 20-25-9 25-24 21 23-20 18 27-20-20-2018 16 24 2017 10 0 10 925 18-16 2017-10- 1255 12-11 78 POT MP BE 102 P 201 29-31 J 78 25 24 24 25 2 P 20-TE 1 18 17 15 17-15-0 15-12-19 IQ D 252523CÓÓÓÓĆ Candela Angle 0 5 85 15 TE 15 15 Element Along II 44-4 125 720 FIT 151
Transcribed Image Text:Catalog # Project LKW for This lomatice Comments Prepared by C2-30.1T5 APPEARATHO 4500 Lemens Efficiency 90.9% Test Report TL5:17895 Coefficients of Utilization AGA 0 NATDONI 2 9 Effective floor cavity reflectance 70 50 30 10 70 50 30 10 Zonal Lumen Summary Lumens Limp Fixture 5509 CORELITE™ 2009 10000 MAA D DE P Type Date Angle in Del PEN N!!! 3100 P 50 30 10 50 30 JE TE JE 57 55- 54 411 41 51 48 15 45 12 30 41 37 31 332 33:29 26 Luminance Data MODE 0 Dig 45 Dog CUSM 2810 14320 31 28 27 20-25-9 25-24 21 23-20 18 27-20-20-2018 16 24 2017 10 0 10 925 18-16 2017-10- 1255 12-11 78 POT MP BE 102 P 201 29-31 J 78 25 24 24 25 2 P 20-TE 1 18 17 15 17-15-0 15-12-19 IQ D 252523CÓÓÓÓĆ Candela Angle 0 5 85 15 TE 15 15 Element Along II 44-4 125 720 FIT 151
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 7 steps with 20 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Electric heating unit
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
EBK ELECTRICAL WIRING RESIDENTIAL
EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:
9781337516549
Author:
Simmons
Publisher:
CENGAGE LEARNING - CONSIGNMENT
SEE MORE TEXTBOOKS