Skip to main content

Flawed modeling to blame for green buildings failure to live up to hype on energy efficiency

Flawed energy efficiency modeling is the reason many green buildings fail to live up to expectations on energy efficiency, according to a U.K. researcher.

David Coley, a University of Bath specialist, led a team that surveyed 108 architects, engineers, and energy consultants who routinely use energy performance models. They asked participants to look at a typical British semi-detached home recently updated to meet current building codes. Then they asked test subjects to rank which improvements made the most difference to energy performance.

Their answers didn’t match up with reality, suggesting a performance gap between modeling and the real world. There were cases where the modelers produced a savings measure that was more than the energy use of the house.

Energy models showing unreasonable results are evident at the preliminary stage on half of projects going through the LEED certification process, according to a U.S. Green Building Council official. Designers have a tendency to accept outputs without evaluating the reasonability of the results, she said.

Part of the reason for the performance gap is that modelers do not usually go onsite to see how the building operates and compare that to the design. Typically there is no expectation that they’ll even talk to the building manager at year one and ask how energy usage compares with the original model.

Interesting read originally from BDC Network

Comments

Post a Comment

Popular posts from this blog

Cooking Outside the Box - Fine Homebuilding

Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Designed by a passionate Dutchman who longed for a more functional kitchen, PITT Cooking’s independent gas burners take kitchen layout to a whole new level. Unlike the fixed grid of burners in a typical cooktop, PITT burners sit in individual holes in a countertop in a custom layout of your choosing (as long as they are at least 3-3/16-in. apart). This lets you match the spacing precisely to the way you cook. Plus you get the striking combination of a professional-grade kitchen with minimalist modern aesthetic. 3 burner sizes: small (2 kW), medium (3 kW), and combined wok/simmer (5 kW) 31 different kits with 1 to 6 burners each Available in aluminum or brass with cast-iron pan supports Burners easily disassemble for cleaning Pricing available on request pittcooking.com PITT Cooking’s wok ring slips right over the 5kW burners to perfectly support round-bottom pots or pans...
Post a Comment
Read more

The Walk-in Shower Specialists In Los Angeles California

If you wish to look for a walk-in showering system, we're just a call away. We have been the shop to consider if you'd like custom bath and showering systems and we've been a popular choice for more than 12 years. Our designs are elegant and spacious and it could be equipped with popular features that will provide you with a calming spa-like experience every time you hit the shower. You could check out our extensive list of walk-in showers in Los Angeles CA from the best brands like Ella, Sterling and Dreamline and they come in various sizes that will fit any type of bathroom. These brands also provide selections for safety features such as comfortably positioned and easy-to-hold grab-bar, low floor threshold and a high weight supporting seating area. You could enjoy an energizing shower experience with our walk-in shower which can be customized to blend into any theme or background. We are also proud of our installation team because they're friendly and fast. All ...
Post a Comment
Read more

Right On Hue - Ideas For Incorporating Color In Your Kitchen Remodel - Dover Home Remodelers

Right On Hue. Ideas for incorporating color in your kitchen remodel When it comes to bringing color into the kitchen, many homeowners take an all-or-nothing approach. What I hear most often from customers during the design stage of a kitchen remodel is that their overwhelming fear is committing to a color that will lock them in—and adversely affect resale. But it doesn’t have to be that way. If you’d like to add color to your kitchen, there are options for creatively incorporating your favorite hues into your remodel without being completely landlocked. Start by identifying your color personality and tolerance. Then add color to your space in a way that suits your taste and stays within your comfort zone. The Minimalist. Clean, simple and classic: These homeowners are drawn to the all-white kitchen trend with quartz or marble countertops, white cabinets and white subway tile. Easy (and non-permanent) ways to add contrasting color in these spaces include: Textiles: Kitchen towels...
Post a Comment
Read more