Another interesting study into the quality of light and the potential need for everyone to have some access to natural daylight, or its artificial equivalent, during their work time? Read More Here
Peter R. Boyce, Ph.D., FIES, FSLL, Professor Emeritus, School of Architecture, Rensselaer Polytechnic Institute, Troy, New York, 2009 Paper summarising the issues needed to be considered in relation to physical impacts of (in)appropriate lighting. Read More Here
Jennifer Veitcha, PhD, a senior research officer at the National Research Council of Canada, in Ottawa, helps design offices that promote health and productivity. Read More Here and
There is no doubt that significant direct energy savings are achieved using smart lighting solutions with intelligent light fixtures. However, there are also indirect energy savings. For example dimmed lights will generate less heat reducing cooling loads on HVAC plant. So are there any studies that have evidenced such and what are the indicative numbers?
I recently asked this question on one of my LinkedIN threads and here are the best of the replies:
Indirect heating and cooling load impact, here are some links that might help …
http://www.lightsearch.com/resources/lightguides/hvac.html
http://www.csemag.com/single-article/integration-lighting-and-hvac-systems/6cdbfda10abe16e6fd87.html p23 and following of http://isites.harvard.edu/fs/docs/icb.topic3.files/07%20ASHRAE%20Standard%2090.1-2010.pdf
This link takes you to an on-line calculator, which claims to determine anticipated heating load from a given lighting deployment, http://liacs.omslighting.com/
Additional comments were as follows:
Unless a software is used (like is nowadays mandatory in many parts of the world) to do a real calculation a rule of thumb is to count with 5% extra savings due to reduction of needed HVAC when using controls relative to not using controls (in new construction, usually the lighting upgrade itself will cut away the biggest heat load by using more efficient sources and fixtures in renovations).
It is also suggested that the heat introduced into your space by lighting is the plug power times the usage time(if undimmed) = conservation of energy, even the light emitted will be converted to heat eventually !!! Unless of course you have ventilation and especially if you have air extraction over the luminaires … a good luminaire supplier will be able to give you data on their luminaires about noise, pressure drop and heat load reduction as a function of air flow …
Did you know that energy use is many times the largest single line item on an expense statement, according to Schneider Electric?
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Enhanced Capital Allowances (ECAs) are a straightforward way for a business to improve its cash flow through accelerated tax relief.
Reduce your operating costs -
Businesses are often tempted to opt for equipment with the lowest purchase cost. Such immediate cost savings often prove to be a false economy. Considering the future operating cost of the equipment before investing can help make the right investment decision – one that reduces future expense.
Investing in ETL equipment reduces operating costs. Improved energy efficiency results in lower energy bills, reduced climate change levy payments and shortens payback periods.
So the next time you’re thinking about investing in plant or machinery, think about future operating costs – not lowest purchase cost – and see your utility bills fall.
Download this ECA Guide to learn more or visit the Energy Technology List Website
“Incorporating day-lighting and lighting controls with a building automation system (BAS) can result in significant energy savings. There are other benefits as well, including compliance with energy codes, U.S. Green Building Council (USGBC) LEED, credits, and Energy Star.
A successful BAS design that incorporates day-lighting and lighting controls will help meet energy codes, achieve LEED prerequisites and credits, save energy while maintaining appropriate lighting levels for the building occupants, and provide the facility manager with a system to collect and analyze data relating to lighting energy usage. The designer should advise the facility’s owner of the added design and implementation costs of the system against the calculated energy savings and return on investment.”
Michael Chow is the founder and owner of Metro CD Engineering.
Click here for more information
The President has called for a new Better Buildings Initiative that would reduce energy usage in commercial buildings by 20 percent over 10 years. This initiative would catalyze private sector investment to upgrade the efficiency of commercial buildings. Enhancing the current deduction for energy efficient commercial building property –which is primarily used by taxpayers constructing new buildings –and allowing a new deduction based on the energy savings performance of commercial building property installed in existing buildings would encourage private sector investments in energy efficiency improvements. See more …..President’s 2014 Budget Proposes to Extend, Enhance §179D Energy…
What is the 179D federal tax deduction?
Section 179D of the Federal Tax Code provides a tax deduction for energy efficiency improvements to commercial buildings. A building may qualify for a tax deduction under Section 179D not to exceed $1.80/ft² for whole building performance or $0.60/ft² for a partially qualifying property for envelope, heating, ventilating, and air conditioning (HVAC), or lighting improvements. In addition, a building may qualify with a reduced installed lighting power under the interim lighting rule. Energy simulations are required to show compliance with the energy and power cost savings requirements…. see more What is the 179D federal tax deduction?
Is the advantage to having motorized exterior shades worth the cost of installation, integration and maintenance? Or further, is there definitely an advantage over “static” shades? Daren Whistler of Somfy, a worldwide supplier of automated exterior shade control solutions offers his thoughts to these questions. Read the full article here
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Download the Press Release, also see the MBS report on the project
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