Lighting Design & Specification

Nov 27, 2020

EIN AEA virtual 400By Blake Marchand

The Alberta Electrical Association (AEA) held their first virtual Learning Expo this past week, which allowed them to continue their programming safely and bring a sense of normal in the otherwise uncertain times of a global pandemic.

The Expo featured ten seminars alongside its virtual trade show floor where 30 manufacturers were represented.

On day one of the two-day event, Ben Rajewski, P.Eng., LC, WELL AP - Team Lead, Electrical with Williams Engineering Canada gave an interesting presentation on UV-C Lighting, discussing the different forms and applications, as well as providing insight on how it works.

With respect to the latter, he explained, “when exposing microorganisms to UV-C light, the light penetrates through the cell wall and disrupts the structure of the DNA molecules, prohibiting reproduction.”

One interesting note was that UV-C light does not make it through the Ozone Layer, so exposure to sunlight does not provide protection from viruses/bacteria.

More importantly, safety is a primary concern when utilizing UV-C light, because exposure to skin is harmful. There are currently no approvals for surface applications in Canada. Rajewski explained research is still being done to ensure it's safe, “but initial results are promising.” Surface UV-C lighting solutions require an additional level of lighting control to ensure UV-C fixtures are off when the room is occupied. The exception is for Far UV-C light, although the technology is still being researched.

Rajewski stressed that dose and duration of exposure, and distance from the sirface are key considerations. The closer the light gets to the surface the less dose/exposure is required. Direct exposure is necessary to kill bacteria, meaning anywhere the light doesn’t directly touch won’t be disinfected. Another important safety note is that UV-C light shouldn’t replace physical cleaning methods. It should be utilized as a supplement to enhance sanitation.

There are four types of UV-C light: Low Pressure Mercury, Pulsed Xenon, UV-C LED, and Far UV-C (or Excimer Lamp).

Low Pressure Mercury and Pulsed Xenon can’t be used in occupied spaces. A key note for UV-C LED, which may be utilized more in the future as the technology improves, is that they will need to be replaced on a regular basis because their effectiveness can’t be easily monitored as the fixture ages.

For Rajewski, the most promising technology, particularly with respect to public/occupied spaces, is Far UV-C, because it kills bacteria without penetrating skin, and therefore is (potentially) safe for use in occupied spaces. “This is where the future lies in fixtures,” he said. “If we can prove it's safe, this will change how we design buildings.”

Rajewski also discussed applications. Interestingly, UV-C has applications for air and water quality. Buildings can use UV-C light to disinfect the air being circulated by HVAC systems. There is also upper room UV disinfection. Which is currently being utilized in healthcare, emergency rooms, and operating rooms. But there are applications in public buildings, stores, restaurants, etc., Rajewski explained.

With upper room disinfection, units are installed above the 7ft mark in a room and are directed upwards, disinfecting the air at the top of the room that is then circulated throughout the room. This method is safe because it avoids direct contact.

It can also be used in water treatment plants to disinfect water. Although, it is only effective on clear liquids.

Surface applications are yet to be approved by Health Canada and applications are limited until Far UV-C is available.

Disinfection Chambers is one of the few UV-C applications approved in Canada, generally used for sterilization of PPE.

Portable disinfection robots are currently being developed for health care facilities as well as hotels. As previously mentioned, UV-C light only disinfects the surfaces it comes in contact with. Mobile robots are able to be flexible enough to get areas that regular fixtures won’t reach and can be operated remotely. They’re also closer to the surface, meaning they can disinfect at a quicker rate.

 

 

Ultimately, Rajewski said UV-C is poised to become a prominent technology in lighting as research continues and government approvals are established. Responding to an attendant question regarding government grants for UV-C applications, Rajewski commented that once Health Canada approves the various technologies, there will likely be government funding programs available.

Again, the key when it comes to public/standard lighting applications is Far UV-C lighting. That’s where the general public can really benefit from the technology, although there is still work to be done to ensure safety.

Retrofit it Your Way with Visioneering’s LRK-TRH

Changing Scene

  • Prev
The Lighting Research Center (LRC) recently released its latest publication, Lighting Answers: UV ...
TPL Lighting, a full service supplier of architectural lighting and controls for the Greater ...
The LIT Lighting Design Awards was created to recognize the efforts of talented international ...
From designers of custom and modular systems to cultivators and processors, the need for certified, ...
Signify Canada will now refer to a select collection of Signify North America luminaire brands as ...
The Northern Lighting Awards recognises exemplary lighting and controls as designed and integrated ...
The International Association of Lighting Designers (IALD) has announced the ...
Signify Canada has added Jean-Francois Ouellet as Eastern Zone Sales Leader for Signify Canada ...
A new edition of UL 8802, the Outline of Investigation for Germicidal Systems, titled UV ...
The DesignLights Consortium (DLC) today issued a Request for Proposals (RFP) seeking consultant ...

Changing Scene

Leviton Business PortalLeviton Canada announced the availability of its second generation eBusiness platform, Leviton B2B. The new online ordering system is designed with several enhanced features to simplify the critical needs of distributor procurement and sales professionals.

“We have designed our eBusiness platform with our distribution partners’ operational needs in mind,” said Jason Prevost, President and Chief Operating Officer at Leviton Canada. “We have improved the user experience on our new B2B portal allowing them to be more efficient.”


Read More


 

Design

  • Prev
“Authentic design” is an important concept that we value at LightForm. Well, of course we do: we ...
 The Lighting Control Innovation Award was created in 2011 as part of the Illuminating ...
Located on an island within the San Francisco Bay, Naval Air Station Alameda was decommissioned in ...
Ottawa’s River Dental location, adjacent to the Rideau River and Rideau Canal, inspired an office ...
When it comes to establishing a trend and setting a mood, Fiona Rimmer, Interior Designer ...
The light installation Het Licht van Jan (Jan's light) was unveiled today in an ...
A leading urban trend is the creation of signature dynamic lighting designs for iconic downtown ...
In Part 1 of this interview with Leora Radetsky, we covered smart lighting, ...
For years, officials in Calgary, Alberta have been concerned with improving the perceived sense of ...
In a recent article on LEDs, we covered numerous topics and questions to help consumers buy ...

LED Technology

  • Prev
The Alberta Electrical Association (AEA) held their first virtual Learning Expo this past week, ...
Some of the recent blog posts have described different components in Networked Lighting Control ...
The Northwest Energy Efficiency Alliance (NEEA) recently published a study seeking to compare ...
Consumer UVC germicidal devices are entering the market rapidly because of an increased demand for ...
Scientists at the Circadian Light Research Center have identified the narrow band of blue light ...
Pierre Longtin, President of Nyx Hemera, was proud to announce the installation of TLACS-A, ...

New Products

Lighting Controls AssociationThis month, we explore a dynamic lighting controls installation at an automated distribution center in Ontario. Lighting control design by Hammerschlag and Joffe Inc. Photography by Terri Nowik, Light Monkeys.

The design team was presented multiple objectives for this 200,000 sq.ft. pharmaceutical Distribution Centre renovation, including fitting out a class A 10,000 sq.ft. office for executives and employees.



 

 

Read More


 

New Products

  • Prev
The new WSXA Series offers all the benefits of the WSX Series but with improved functionality and ...
The new AimLite LED backlit panel lights P14BR series utilize next-generation backlit technology, ...
SKYE is a high-performance, easy to install residential grade downlight solution that offers good ...
The eLumigen High CRI C1D2 LED Fixture is the ideal light source replacement for Paint Booth, ...
The eLumigen LED Linear Vapor Tight fixtures are designed for installation at mounting heights of ...
Introducing the new in-sourced, upgraded, and expanded vapor tight LED High Bay -- the ...
Liteline Corporation's 4¼" aluminum remodel housing is now available in black in addition to ...
Aculux 2" LED Precision Luminaires With the diminutive 2"Aculux LED precision luminaire, you can ...
Enjoy faster, simpler installation with preconfigured wireless occupancy sensor kits, resulting in ...
Philips Hue Phoenix from Royal Philips is the first in a new range of white ambience connected ...
Kerrwil Publications Great Place to Work. Certified December 2019 - December 2020

538 Elizabeth Street, Midland,Ontario, Canada L4R2A3 +1 705 527 7666
©2021 All rights reserved

Use of this Site constitutes acceptance of our Privacy Policy (effective 1.1.2016)
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Kerrwil