CANOPY DAYLIGHTING EVALUATION - BCIT Commons · Daylighting Evaluation Report ERP Canopy, BCIT...

CANOPY DAYLIGHTING EVALUATION

British Columbia Institute of Technology (BCIT) Prepared for: Alexandre Hebert Prepared by: Adam Franklin, EIT, LEED Green Assoc. Project No. 2014151 Date: May 15, 2014

Daylighting Evaluation Report ERP Canopy, BCIT

Prism Engineering Ltd. i

TABLE OF CONTENTS

1. EXECUTIVE SUMMARY ...............................................................................................1

2. METHODOLOGY ............................................................................................................3

2.1 OBJECTIVES ......................................................................................................................... 3 2.2 EVALUATION METHODOLOGY ............................................................................................ 3

3. EXISTING CONDITIONS ...............................................................................................4

3.1 LIGHTING SYSTEMS DESCRIPTION ...................................................................................... 4 3.2 ILLUMINATION LEVELS ....................................................................................................... 5

4. PROPOSED UPGRADES .................................................................................................6

4.1 PURPOSE OF PROPOSED UPGRADES .................................................................................... 6 4.2 GENERAL UPGRADE OVERVIEW ......................................................................................... 6 4.3 IMPACT OF MODIFICATIONS ON LIGHTING LEVELS ............................................................ 6 4.4 UPGRADE OPTIONS AND ESTIMATED COSTS ...................................................................... 6 4.5 ADDITIONAL AND RELATED COSTS .................................................................................... 7

5. DAYLIGHTING SIMULATION RESULTS ..................................................................9

5.1 EXISTING CONDITIONS ........................................................................................................ 9 5.2 DAYLIGHTING OPTION #1: SOLATUBES .............................................................................. 9 5.3 DAYLIGHTING OPTION #2: SKYLIGHTS ............................................................................. 10 5.4 DAYLIGHTING OPTION #3: SOLATUBES AND SKYLIGHTS ................................................. 10

6. ENERGY & COST SAVINGS ANALYSIS ..................................................................11

6.1 ENERGY CONSUMPTION .................................................................................................... 11 6.2 ESTIMATED ENERGY SAVINGS .......................................................................................... 11 6.3 ECONOMIC ANALYSIS ....................................................................................................... 11

7. RECOMMENDATIONS .................................................................................................13

8. IMPLEMENTATION AND MONITORING ...............................................................14

8.1 IMPLEMENTATION OF RETROFIT ....................................................................................... 14

LIST OF APPENDICES

APPENDIX A: CONTACT INFORMATION APPENDIX B: LIGHTING SIMULATION RESULTS


Prism Engineering Ltd. 1

1. EXECUTIVE SUMMARY

The following report details the daylighting feasibility review conducted by Prism Engineering

for the Carpentry Practicum Area Canopy located at the BCIT Burnaby Campus, 3700

Willingdon Avenue, in Burnaby BC.

In this report we outline the existing conditions of the current lighting system, evaluate the energy

saving potential and cost effectiveness of different daylighting options, and provide

recommendations for the implementation of the project.

The intent of this project is increase the amount of daylight provided to the carpentry area to

offset and reduce the need for artificial lighting. The proposed strategy is to install skylights

and/or “Solatube” daylighting systems in the existing canopy.

The options and recommendations presented in the report are designed to maximize energy

savings through daylight harvesting. The potential annual energy and costs savings for each

option are outlined in the table below. We recommend implementing the Solatubes and Skyllights

option, shown below in bold.

Table 1: Summary of Potential Energy and Cost Savings

Daylighting

Option Lighting Option

Demand

Savings

(kW)

Annual

Energy

Savings

(kWh)

Annual

Energy

Savings

(%)

Annual

Electrical Cost

Savings

($)

Annual

Maintenance

Cost Savings

($)

No Change

Controls Only - 16,394 55% $1,475 -

HID Bi-level - 19,145 64% $1,723 -

New LED

Luminaires 10 25,342 85% $3,316 $2,000

Solatubes

Controls Only - 20,203 68% $1,818 -

HID Bi-level - 24,386 82% $2,195 -

New LED

Luminaires 10 27,540 92% $3,514 $2,000

Skylights

Controls Only - 20,203 68% $1,818 -

HID Bi-level - 22,639 76% $2,037 -

New LED

Luminaires 10 26,807 90% $3,448 $2,000

Solatubes &

Skylights

Controls Only - 22,687 76% $2,042 -

HID Bi-level - 26,042 87% $2,344 -

New LED

Luminaires 10 28,238 95% $3,577 $2,000

Maintenance cost savings are an estimate and are based on today’s market and labour rates and

will vary depending on lighting usage.

The estimated implementation costs and financial performance of each upgrade option is

summarized in the table below.



Table 2: Summary of Project Costs and Financial Performance

Daylighting


Total

Budget

Costs

($)

Total

Annual

Cost

Savings ($)

Simple

Payback

(yrs)

NPV

(20 yr)

IRR

(20 yr)

No Change

Controls Only $10,000 $1,475 6.8 $9,723 15%

HID Bi-level $22,000 $1,723 12.8 $1,032 7%

New LED

Luminaires $35,000 $5,316 6.6 $32,266 15%

Solatubes

Controls Only $130,000 $1,818 71.5 -$105,694 -8%

HID Bi-level $142,000 $2,195 64.7 -$112,663 -7%

New LED

Luminaires $155,000 $5,514 28.1 -$85,090 -2%

Skylights

Controls Only $60,000 $1,818 33.0 -$35,694 -3%

HID Bi-level $72,000 $2,037 35.3 -$44,764 -3%

New LED

Luminaires $85,000 $3,448 15.6 -$15,972 4%

Solatubes &

Skylights

Controls Only $140,000 $2,042 68.6 -$112,706 -8%

HID Bi-level $152,000 $2,344 64.9 -$120,671 -8%

New LED

Luminaires $165,000 $5,577 29.6 -$94,251 -2%

Simple payback, net present value (NPV), and internal rate of return (IRR) are all calculated

based on the Total Budget Costs.

The IRR and NPV are based on a 20 year equipment life and include a 2.5% escalation in utility

rates. Additionally, the NPV includes a 6% discount rate.

The lighting upgrade recommendations were selected based on the following criteria:

Energy savings potential;

Costs of maintenance; and

Improving illumination conditions (as need be).

In addition to the energy cost savings, other benefits will be generated by implementation of

recommendations contained in this report; including reduced greenhouse gas production

(indirectly).



2. METHODOLOGY

2.1 Objectives

This evaluation was defined to meet the following objectives:

to review the lighting systems and determine the electrical energy consumption for lighting in

the area;

to investigate the viability of installing a Solatube Daylighting System and/or activating the

unfinished skylights;

to analyze the existing lighting systems and propose energy savings measures;

to recommend cost effective lighting and daylight harvesting controls upgrades;

to determine project costing and carry out financial analysis.

2.2 Evaluation Methodology

2.2.1 Lighting Audit and Analysis

The lighting audit consisted of on-site verification of quantities, wattages, and control methods of

the existing lighting system. Additionally, light levels were recorded throughout the area in order

to determine the existing illumination conditions and estimate the amount of daylight

contribution.

2.2.2 Daylighting Simulations

Daylight simulations were conducted for the existing conditions and all potential upgrade options

for variety of different times and weather conditions. The results were used to determine the

amount of artificial lighting required to meet the target illumination levels as recommended by

the Illuminating Engineering Society of North America (IESNA).

2.2.3 Energy Analysis

Lighting energy use was determined based on the verified quantities and wattages of the existing

luminaires and estimates of operating hours. Potential energy savings for the various options were

determined based on the daylighting simulation results and the corresponding anticipated

reduction in operating hours.

2.2.4 Measure Selection Criteria

Measures proposed for implementation on this project have been selected based on the viability

of the measure against the following criteria:

appropriateness for tasks performed in the space;

condition of existing lighting systems;

cost to retrofit existing system vs. cost to replace systems;

low maintenance requirements;

overall impact on occupants and general acceptance of changes.

The intent of the outlined criteria is to provide guidelines to determine which lighting measure is

appropriate for the tasks performed.

2.2.5 Cost/Benefit Analysis

Lighting retrofit alternatives were evaluated. Measures were selected and omitted to maximize

energy savings and minimize overall project costs.



3. EXISTING CONDITIONS

3.1 Lighting Systems Description

The canopy covering the carpentry practicum area is also referred to as the Elevated Research

Platform (ERP) and is a 1,300 m2 (14,000 ft

2) structure that was constructed in 2007.

Figure 1: Carpentry Canopy / ERP

The canopy also acts as a green roof where plant experiments and other horticulture research take

place, as can be seen in Figure 2.

Figure 2: Green Roof Located on Top of the ERP

More recently, a living wall has been installed on the vertical wall structure of the North stairway

that provides access to the top of the canopy. The living wall can be seen in Figure 3 below.

Figure 3: Living Wall



The lighting inside the practicum area is provided by 45 high bay luminaires that utilize 320 watt

pulse-start metal halide lamps.

The canopy is open to the North and South sides, with smaller clerestory breaks in the structure

along the West and East side near buildings NE2 and NE4 that allow for daylight infiltration to

the space.

Additionally, there are five 8’ x 9’ skylights that are not being utilized and are currently capped

off with plywood. These skylights were included as part of initial design of the canopy, however,

they were never fully completed and no glazing has been installed.

3.2 Illumination Levels

Illumination levels were measured throughout the canopy. The time period, weather conditions,

and recorded illumination levels, along with the target levels as recommended by the IESNA, are

outlined in tables below. The high bay lighting system was ‘ON’ at the time of the measurements.

Table 3: Time Period and Weather Conditions During Illumination Level Measurements

Day Time Weather Conditions

April 22, 2014 2:10 PM – 2:30 PM Sunny with Light Clouds

Table 4: Recorded and Recommended Illumination Levels

Area Measured Levels (Lux)

IESNA

Recommended Illumination

Levels (Average Lux)

North End 1,500 – 2,580 500 – 1000

Center 807 – 1,400 500 – 1000

South End 1,507 – 80,730 500 – 1000

Living Wall 6,458 – 8,611 N/A



4. PROPOSED UPGRADES

4.1 Purpose of Proposed Upgrades

The purpose of the proposed modifications are as follows:

Provide supplemental daylight to the work areas under the canopy;

Utilize daylight harvesting controls to reduce the operating hours of the artificial light sources;

Reduce energy consumption; and

Improve the visual environment and quality of lighting for occupants.

4.2 General Upgrade Overview

We have reviewed several potential upgrade options. The proposed upgrades typically include

one or more of the following actions:

Install new daylight harvesting control system;

Uncap existing skylights and install required lensing;

Install new Solatube Daylighting Systems;

Install bi-level HID controllers on existing luminaires to enable bi-level (High / Low) control;

Replace existing luminaires with new lower wattage LED high bay luminaires.

4.3 Impact of Modifications on Lighting Levels

The impact of the modifications on existing lighting levels should be neutral, with little change

evident to occupants. Although in illumination level may decrease in certain areas, typically

levels will be maintained or increased throughout the carpentry area.

4.4 Upgrade Options and Estimated Costs

4.4.1 Daylighting Option #1: Solatubes

This daylighting option includes the following actions:

Install 25 – 29” Solatube light pipes in the main area; and

Install 1 – 29” Solatube light pipe above the Living Wall feature on the North side.

The budget costs (material and labour) for this option is: $120,000

4.4.2 Daylighting Option #2: Skylights

This daylighting option includes the following actions:

Install skylight panels in the five existing skylight wells; and

Install 1 – 29” Solatube light pipe above the Living Wall feature on the North side.

The panels would be a Kalwall high-performance translucent skyroof system that would control

direct glare, reduce solar gain, and offer greater diffusion of light entering the space from the

skylights. Diffuse lighting is more controlled and more usable than direct sunlight penetration

entering into a space.


4.4.3 Daylighting Option #3: Solatubes and Skylights

This daylighting option combines the Solatube and Skylight options described above and includes

the following actions:



Install 16 – 29” Solatube light pipes in the main area;

Install 1 – 29” Solatube light pipe at the Living Wall feature on the North side; and

Install skylight panels in the five existing skylight wells.


4.4.4 Lighting Option #1: Daylight Harvesting

This lighting option includes the following actions:

Install photosensors and a control system configured to create three control zones within

the space;

Create and install a lighting zone map above the low voltage switches.

The low voltage control system with integrated daylight harvesting photosensors would switch

the existing HID luminaires ‘On’ and ‘Off’ based on the amount of ambient daylight contribution

in each of the three zones. The center zone will be re-wired into three sub zones to allow for

further control.


4.4.5 Lighting Option #2: HID Bi-level retrofit and Daylight Harvesting


Install bi-level HID controllers on all 45 metal halide highbays;

Install photosensors and a control system configured to create three control zones within

the space; and

Create and install a lighting zone map above the low voltage switches.

As the first threshold for daylight contribution is reached, all luminaires in the two rows of lights

at the North and South zones at the ends of the canopy would turn off. At the second threshold

level, half of the luminaires in the center zone will switch to ‘low’ mode operation. The third

threshold will trigger the remaining luminaires in the centre zone to switch to ‘low’ mode

operation.

The metal halide highbays would operate at 100% light output and 100% system power in ‘high’

mode operation, then drop to 45% light output and 55% system power in ‘low’ mode operation.


4.4.6 Lighting Option #3: New LED High-bays and Daylight Harvesting


Replace the existing luminaires with 45 new 155W LED highbay luminaires complete

with integrated daylight sensors and 0-10V dimming control;

Create and install a lighting zone map above the low voltage switches

This option will allow each individual luminaire to dim and switch ‘Off’ independently according

to the amount of ambient daylight contribution in each area of the canopy.


4.5 Additional and Related Costs

Solatube pricing includes materials for tubes, collectors and mounting cap / curb, and installation

labour for the tubes.



Roofing costs have been included as part of the budget costs for each options. These costs include

the work to cut the holes to accommodate the light tubes, building of the mounting surround or

curb from roof to the mounting cap, and roofing work to seal the membrane and waterproof the

installation. These costs are estimates only and should be verified by a roofing or general

contractor.

Cost estimates do not include permit costs of an estimated 7% of project value.

Costs associated with additional architectural, structural engineering, or other consulting services

have not been included in the budget costs.

RJC (Reed Jones Cristoffersen Consulting Engineers) has previously performed consulting on the

envelope and roofing for this structure and other structures at BCIT; therefore, it is recommended

that they be engaged to review the structure in light of the intent of this project. They would be

able to advise of any impediments to implementation that should be taken into account and any

additional, yet unidentified costs related to the items / concerns that they may find from an

assessment.

Taxes are not included in pricing.



5. DAYLIGHTING SIMULATION RESULTS

We conducted daylight simulations for each of the three daylighting options. The results are

detailed in the following sections.

The carpentry area was divided into three separate calculation zones, North, Center, and South, in

order to more accurately estimate the ambient daylight contribution in each area. Detailed

drawings illustrating the three calculation zone, lighting layout, and simulation results can be

found in Appendix B.

Table 5 below outlines the various parameters utilized for the daylighting simulations and

analysis.

Table 5: Parameters for Daylighting Simulations

Location: Vancouver, BC

Date: March 21

Sky Conditions: Overcast

Times: 9:00AM / 12:00PM / 3:00PM

Target Illumination Level (average): 750 lux

March 21 represents an average day that occurs most frequently throughout the year. The amount

of daylight contribution will typically increase during the summer months and decrease during

the winter months.

5.1 Existing Conditions

Time of

Day

North Center South

Avg lux Avg lux Avg lux

9:00AM 1138 366 1328

12:00PM 1839 576 2153

3:00PM 1384 451 1617

Under the existing conditions the luminaires in the two outside rows at North and South ends are

typically not required for the majority of an average day. The Center area requires between 50%

and 100% of the artificial lighting throughout the day to meet the target light levels.

5.2 Daylighting Option #1: Solatubes

Time of

Day

North Center South


9:00AM 1260 610 1511

12:00PM 1972 825 2339

3:00PM 1529 696 1802

For this option the Center area requires between 10% and 75% of the artificial lighting during the

morning hours. During the afternoon hours all three zones can be shut ‘Off’ while still meeting

the target light levels. The North and South zones can be ‘Off’ during the morning hours as well.



5.3 Daylighting Option #2: Skylights

Time of

Day

North Center South


9:00AM 1230 494 1382

12:00PM 1926 745 2213

3:00PM 1456 599 1679

For this option the Center area requires between 25% and 100% of the artificial lighting during

the morning hours. During the afternoon hours all three zones can be shut ‘Off’ while still

meeting the target light levels. The North and South zones can be ‘Off’ during the morning hours

as well.

5.4 Daylighting Option #3: Solatubes and Skylights

Time of

Day

North Center South


9:00AM 1263 702 1456

12:00PM 2034 953 2295

3:00PM 1445 808 1863

For this option the Center area requires between 10% and 75% of the artificial lighting until

approximately 10:00 AM. After 10:00 Am all three zones can be shut ‘Off’ while still meeting

the target light levels. The North and South zones can be ‘Off’ during the majority of the day.



6. ENERGY & COST SAVINGS ANALYSIS

6.1 Energy Consumption

The existing HID system currently consumes an estimated 29,810 kWh annually. This estimate is

based on the current system operating 8 hours a day, 5 days a week, 45 weeks per year.

6.2 Estimated Energy Savings

The potential energy savings for each of the upgrade options are presented in the table below.

Table 6: Summary of Potential Energy and Cost Savings for Lighting Upgrade Options

Daylighting


Demand

Savings

(kW)

Annual Energy

Savings

(kWh)

Annual Energy

Savings

(%)

Annual Electrical

Cost Savings

($)

No Change

Controls Only - 16,394 55% $1,475

HID Bi-level - 19,145 64% $1,723

New LED

Luminaires 10 25,342 85% $3,316

Solatubes

Controls Only - 20,203 68% $1,818

HID Bi-level - 24,386 82% $2,195

New LED

Luminaires 10 27,540 92% $3,514

Skylights

Controls Only - 20,203 68% $1,818

HID Bi-level - 22,639 76% $2,037

New LED

Luminaires 10 26,807 90% $3,448

Solatubes &

Skylights

Controls Only - 22,687 76% $2,042

HID Bi-level - 26,042 87% $2,344

New LED

Luminaires 10 28,238 95% $3,577

6.3 Economic Analysis

The estimated implementation costs and financial performance for each of the lighting options are

summarized in the table below.

Table 7: Summary of Lighting Upgrade Costs and Financial Performance

Daylighting


Budget

Costs

($)

Annual

Energy Cost

Savings

($)

Annual

Maintenance

Cost Savings

($)

Simple

Payback

(yrs)

NPV

(20 yr)

IRR

(20 yr)

No Change

Controls Only $10,000 $1,475 - 6.8 $9,723 15%

HID Bi-level $22,000 $1,723 - 12.8 $1,032 7%

New LED

Luminaires $35,000 $3,316 $2,000 6.6 $32,266 15%



Daylighting


Budget

Costs

($)

Annual

Energy Cost

Savings

($)

Annual

Maintenance

Cost Savings

($)

Simple

Payback

(yrs)

NPV

(20 yr)

IRR

(20 yr)

Solatubes

Controls Only $10,000 $1,818 - 5.5 $14,306 19%

HID Bi-level $22,000 $2,195 - 10.0 $7,337 10%

New LED

Luminaires $35,000 $3,514 $2,000 6.3 $34,910 16%

Skylights

Controls Only $10,000 $1,818 - 5.5 $14,306 19%

HID Bi-level $22,000 $2,037 - 10.8 $5,236 9%

New LED

Luminaires $35,000 $3,448 $2,000 6.4 $34,028 16%

Solatubes

& Skylights

Controls Only $10,000 $2,042 - 4.9 $17,294 22%

HID Bi-level $22,000 $2,344 - 9.4 $9,329 10%

New LED

Luminaires $35,000 $3,577 $2,000 6.3 $35,749 16%

The following table outlines the economic analysis with the budget costs for the different

daylighting options included.

Table 8: Summary of Total Project Budget Costs and Financial Performance

Daylighting


Total Budget

Costs

($)

Simple Payback

(yrs)

NPV

(20 yr)

IRR

(20 yr)

No Change

Controls Only $10,000 6.8 $9,723 15%

HID Bi-level $22,000 12.8 $1,032 7%

New LED

Luminaires $35,000 6.6 $32,266 15%

Solatubes

Controls Only $130,000 71.5 -$105,694 -8%

HID Bi-level $142,000 64.7 -$112,663 -7%

New LED

Luminaires $155,000 28.1 -$85,090 -2%

Skylights

Controls Only $60,000 33.0 -$35,694 -3%

HID Bi-level $72,000 35.3 -$44,764 -3%

New LED

Luminaires $85,000 15.6 -$15,972 4%

Solatubes &

Skylights

Controls Only $140,000 68.6 -$112,706 -8%

HID Bi-level $152,000 64.9 -$120,671 -8%

New LED

Luminaires $165,000 29.6 -$94,251 -2%



7. RECOMMENDATIONS

Based on the results of our investigation, we recommend that BCIT implement the following

options:

Daylighting Option #3: Solatubes and Skylights

Lighting Option #3: New LED High-bays and Daylight Harvesting

The total estimated budget cost for these options is: $165,000

Utilizing the Solatube Daylighting Systems in addition to activating the skylights will maximize

the amount of daylight entering the space. As a result, the amount of artificial illumination

required to meet the IESNA recommended light levels will be minimized.

LED technology offers a number of advantages over the existing metal halide system, including:

Higher lamp efficacy (65 to 100+ lumens per watt or greater)

Long life expectancy (L70 rated life of 50,000+ hours)

Full Dimming Capability is Typically Standard

Instant On Operation

Zero Mercury Content

Additionally, the LED high-bay luminaires with individual daylight sensors provide more

potential for energy savings as each luminaire can dim and turn ‘Off’ independently throughout

the day based on the amount of daylight in each area. This also simplifies the installation as no

additional control system or re-wiring for zoning would be required.

Furthermore, the LED luminaires can significantly reduce maintenance costs compared to the

existing systems. The LED luminaires have a rated life of 50,000+ hours compared to 20,000

hours for metal halide lamps. Moreover, the life expectancy of LED systems is not impacted by

frequent dimming or switching as is typically the case for HID systems.



8. IMPLEMENTATION AND MONITORING

8.1 Implementation of Retrofit

The next phase of the project is the implementation of the energy management measures. This

would include design, specification, tender, and commissioning of the project.

The following steps outline a potential approach:

8.1.1 Designs and Specifications

Prism will provide detailed designs and specifications for the purchase and installation of

equipment for the project. Furthermore, test areas can be set up to demonstrate the suitability of

certain retrofit measures.

Separate specifications will be provided for the lighting and mechanical measures. The tender

packages will include product specifications and installation standards. The specifications will

also include general terms and conditions addressing issues such as contractor liability, contractor

insurance requirements and proper disposal of obsolete equipment.

We will meet with your assigned representative to review the designs and specification and to

address your specific needs. Prism’s familiarity with the building and recommended measures

will ensure that all measures are implemented according to the intent of the study.

8.1.2 Lighting Drawing Preparation

Prior to the implementation of the project, drawings will be produced to assist in the installation

of new lighting, repositioning of lighting or removal of excess lighting. These drawings will be

provided on an as required basis.

8.1.3 Tender and Contract Preparation

Contractor(s) invited to submit pricing will be selected based on their ability to perform the work

taking into account the Owner’s preferences. The tender will include a site meeting between

Prism and the invited contractors to thoroughly review the specification documents and scope of

work. Proposed equipment will be pre-approved by Prism Engineering prior to acceptance.

8.1.4 Tender Review and Recommendation

The bid review will include an evaluation of all tenders submitted by the invited contractors,

including compliance, price, installation schedule and contractor experience. Our

recommendations will be based on the fact that we are not affiliated with any products, suppliers

or contractors.

8.1.5 Installation Overview

We will review shop drawings submitted by contractors and will conduct field reviews to ensure

the installation complies with the specifications. We will assist in resolving any issues that might

occur during the course of the installation. Emphasis will be given regarding site clean up and

non-interference with occupants use of the building during the project.

8.1.6 Review and Testing

We will provide a final review of the equipment installed as part of the project to ensure

compliance with the specification requirements.

8.1.7 Project Management

Prism will work with Building’s project management team. We will meet with you to report on

the project as required and will make recommendations on contractor payment of various stages

of the project.


Prism Engineering Ltd.

APPENDIX A: CONTACT INFORMATION

CLIENT CONTACT British Columbia Institute of Technology (BCIT)

Address 3700 Willingdon Ave, Burnaby, BC, V5G 3H2

Contact Name Alexandre Hebert

Title Energy and Sustainability Manager

Telephone (604) 451-7011

Email [email protected]

CONSULTANT CONTACT PRISM ENGINEERING LTD.

Address 320 – 3605 Gilmore Way, Burnaby, BC, V5G 4X5

Telephone (604) 298-4858

Fax (604) 298-8143

Website www.prismengineering.com

Contact Name Casey Gaetz, LC

Title Associate

Telephone (604) 205-5501


Contact Name Adam Franklin, EIT, LEED Green Associate

Title Electrical Engineer

Telephone (604) 205-5518


Contact Name

Alison Bodine

Title Electrical Designer

Telephone (604) 205-5525



Prism Engineering Ltd.

APPENDIX B: LIGHTING SIMULATION RESULTS

BCIT E

RP C

ANOPY D

AYLIGHTING S

IMULATION

SKYLIGHTS A

ND S

OLATUBES

MARCH 2

1 9

:00AM O

VERCAST S

KY

Designer

AB & AF

Date

08/05/2014

Scale

Not to Scale

Drawing No.

1 of 1

Luminaire Schedule

Symbol QTY DescriptionLumens Per

LampLLF Wattage

17 Solatube SkyVault Daylighting System 9902 0.92 0

45 320W PS MH High Bay 22000 0.65 365

Statistics

Description Symbol Avg Max Min Max/Min Avg/Min Avg/Max

Centre 702 lux 880 lux 339 lux 2.6:1 2.1:1 0.8:1

North 1263 lux 2682 lux 246 lux 10.9:1 5.1:1 0.5:1

South 1456 lux 3180 lux 339 lux 9.4:1 4.3:1 0.5:1

Simulation Results (Daylight Only)

BCIT E

RP C

ANOPY D

AYLIGHTING S

IMULATION

SOLATUBES O

NLY

MARCH 2

1 9

:00AM O

VERCAST S

KY

Designer

AB & AF

Date

15/05/2014

Scale

Not to Scale

Drawing No.

1 of 1

Luminaire Schedule


LampLLF Wattage

26Solatube SkyVault Daylighting System with

Single-Glazed Dome9902 0.92 0

45 320W PS MH High Bay 22000 0.65 365


Statistics



North 1260 lux 2651 lux 260 lux 10.2:1 4.8:1 0.5:1

South 1511 lux 3387 lux 261 lux 13.0:1 5.8:1 0.4:1

BCIT E

RP C

ANOPY D

AYLIGHTING S

IMULATION

SKYLIGHTS O

NLY

MARCH 2

1 9

:00AM O

VERCAST S

KY

Designer

AB & AF

Date

15/05/2014

Scale

Not to Scale

Drawing No.

1 of 1

Luminaire Schedule


LampLLF Wattage

1Solatube SkyVault Daylighting System with

Single-Glazed Dome9902 0.92 0

45 320W PS MH High Bay 22000 0.65 365

Statistics



North 1230 lux 2706 lux 236 lux 11.5:1 5.2:1 0.5:1

South 1382 lux 3280 lux 284 lux 11.5:1 4.9:1 0.4:1


BCIT ERP DAYLIGHT SIMULTION

EXISTING CONDITIONS

MARCH 21 9:00AM OVERCAST SKY

Designer

AB & AF

Date

15/05/2014

Scale

Not to Scale

Drawing No.

2 of 2

Luminaire Schedule


LampLLF Wattage

45 320W PS MH High Bay 22000 0.65 365

Statistics



North 1168 lux 2660 lux 208 lux 12.8:1 5.6:1 0.4:1

South 1328 lux 3281 lux 201 lux 16.3:1 6.6:1 0.4:1


CANOPY DAYLIGHTING EVALUATION - BCIT Commons · Daylighting Evaluation Report ERP Canopy, BCIT...

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