You are required to design lighting system for a large space to meet the uniformity and...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
You are required to design lighting system for a large space to meet the uniformity and illumination requirements. This is for an office space of 20m by 15m area with a ceiling hight of 3.5m. The working surface is 0.70m high. The reflectance of the space is defined by 0.7 ceiling, 0.5 walls and 0.2 floor. The average daily usage of the lamp is 15 hours. The Luminaire units used are dust proof and has 0.6x0.6 m² illumination opening. Each luminaire contains 3 LED tubes of 20watt per tube rating with efficacy of 150 Lumen/watt. The Luminaire's walls are micro-prism polycarbonate diffusers. Light Output Ratio LOR=0.80. The required maintained average illuminance at the working height is E = 500 Lux. The space to height ratio SHR@70% for both directions = 1.5. The Office and Luminaries cleaned every year. This is to satisfy the Glare Requirement. The LLMF for the L70 50,000h lamp used is 0.9. Use the LED lamp L70 50,000h characteristic curve, and the LMF, RSMF and Utilization Factors data tables offered by Appendix1 below for your solution and work out the followings: 1. The number of luminaires needed and possible uniform distribution over the space. 2. The number of luminaires required to satisfy the illumination at workspace level of E=500 Lux. 3. The workspace illumination that results from using the arrangements you have decided on for the uniform distribution in 1 above. You are required to design lighting system for a large space to meet the uniformity and illumination requirements. This is for an office space of 20m by 15m area with a ceiling hight of 3.5m. The working surface is 0.70m high. The reflectance of the space is defined by 0.7 ceiling, 0.5 walls and 0.2 floor. The average daily usage of the lamp is 15 hours. The Luminaire units used are dust proof and has 0.6x0.6 m² illumination opening. Each luminaire contains 3 LED tubes of 20watt per tube rating with efficacy of 150 Lumen/watt. The Luminaire's walls are micro-prism polycarbonate diffusers. Light Output Ratio LOR=0.80. The required maintained average illuminance at the working height is E = 500 Lux. The space to height ratio SHR@70% for both directions = 1.5. The Office and Luminaries cleaned every year. This is to satisfy the Glare Requirement. The LLMF for the L70 50,000h lamp used is 0.9. Use the LED lamp L70 50,000h characteristic curve, and the LMF, RSMF and Utilization Factors data tables offered by Appendix1 below for your solution and work out the followings: 1. The number of luminaires needed and possible uniform distribution over the space. 2. The number of luminaires required to satisfy the illumination at workspace level of E=500 Lux. 3. The workspace illumination that results from using the arrangements you have decided on for the uniform distribution in 1 above.
Expert Answer:
Answer rating: 100% (QA)
1 The number of luminaires required for the space is 20 luminaires The number of luminaires needed c... View the full answer
Related Book For
Auditing An International Approach
ISBN: 978-0071051415
6th edition
Authors: Wally J. Smieliauskas, Kathryn Bewley
Posted Date:
Students also viewed these programming questions
-
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
-
Case Study: Quick Fix Dental Practice Technology requirements Application must be built using Visual Studio 2019 or Visual Studio 2017, professional or enterprise. The community edition is not...
-
A family run restaurant has 6 employees - an owner, two chefs, and three waiters. The owner pays himself a base salary of $15,000/month and partakes of 60% of the profit every month. The chefs each...
-
Given that, VDD = 5V, VTN = 0.4 V, kn = 100 A/V, An = 0.02 V-, () = 80, R = 4 kN, R = 0.5 MN, R3 = 4.5 M, and assume that the current through R and R3 is negligible compared to IDs. 1) Find Vo. For...
-
Alpha, Inc., owns Beta Corp. Te two companies individual balance sheets follow: Requirements 1. Prepare a consolidated balance sheet of Alpha, Inc. It is sufficient to complete the consolidation work...
-
Solve Problem 2.21 using an annual cost analysis instead of a present worth analysis. Problem 2.21 A pipeline engineer is considering alternative natural gas pipeline routings. The first route is...
-
Calculate the standard Gibbs free energy change and the equilibrium constant at 1 bar and \(298.15 \mathrm{~K}\) for the ammonia synthesis reaction \[ \mathrm{C}_{2} \mathrm{H}_{5}...
-
Spray drying is a process in which a liquid containing dissolved or suspended solids is injected into a chamber through a spray nozzle or centrifugal disk atomizer. The resulting mist is contacted...
-
Explain the "elements of value" concept and note how firms use this concept to increase revenue. Provide a detail answer.
-
Table 3.1 in the previous chapter presents financial statements for R&E Supplies for the period 2018 through 2021, and Table 3.5 presents a pro forma financial forecast for 2022. Use the information...
-
Patterson, Inc. has provided detals of Its actual cost data for the month. The Controller has asked you to compute the basic variances and the impact of those variances on unit costs. Use the...
-
Sandy drove 5,632 personal kilometres in 2023. What is the operating cost benefit ? Mary works in Alberta and is paid $700 weekly . In My she received a bonus of $ 800 for meeting her previous year's...
-
A project costs 100,000 with a planned life of 12 years. The benefits have been forecast to be 15,000 per year. What will be the IRR (to the nearest integer) for this project?
-
Altira Corporation provides the following information related to its inventory during the month of August 2024: August 1 Inventory on hand-2,300 units; cost $6.40 each. August 8 Purchased 11,500...
-
You have just purchased an investment that generates the following cash flows for the next four years. You are able to reinvest these cash flows at 9.6 percent, compounded annually. End of year 1....
-
Haunted Forest, Inc.is selling fog machines. Use the following information about Haunted Forest, Inc. to answer the following questions. Average selling price per unit $335. Variable cost per unit...
-
A car moving at speed v = 60 km/h crashes into a streetlight. The driver's upper body of mass m = 40 kg hits the airbag and moves forward by 45 cm before coming to a full stop. What is the magnitude...
-
In order to get an idea on current buying trends, a real estate agent collects data on 10 recent house sales in the area. Specifically, she notes the number of bedrooms in each house as follows: a....
-
What three general descriptions can be given to manipulations that produce materially misleading financial statements?
-
The strengths of the IT general controls collectively provide an appropriate foundation for maintaining the integrity of information, the security of data, and the efficient operation of application...
-
Johnson & Company, PAs, audited the Guaranteed Trust Company. M. Johnson had the assignment of evaluating the collectability of real estate loans. Johnson was working on two particular loans: (1) A...
-
The mean free path \(\lambda\) of a molecule of gas is the average distance it travels before collision with another molecule. It is given by \[\lambda=C \frac{m}{ho d^{2}}\] where \(m\) and \(d\)...
-
A rectangular gate (width \(w=2 \mathrm{~m}\) ) is hinged as shown, with a stop on the lower edge. At what depth \(H\) will the gate tip? Water H 0.55 m 0.45 m P3.46 Hinge Stop
-
Gates in the Poe Lock at Sault Ste. Marie, Michigan, close a channel \(W=34 \mathrm{~m}\) wide, \(L=360 \mathrm{~m}\) long, and \(D=10 \mathrm{~m}\) deep. The geometry of one pair of gates is shown;...
Study smarter with the SolutionInn App