In SWA’s second contribution to Green Energy Times, we examine the certification programs, operational strategies, and occupant behavior trends that contribute to enhanced indoor air quality (IAQ). The full article is featured below, or on page 29 of the April-June edition of Green Energy Times.
Posts by Heather Breslin
It Can Take Years – A Market Adoption Story
Earlier this year, at the AHR Expo in Orlando, the biggest trade show for HVAC professionals, Aeroseal’s duct sealing technology was declared the Product of the Year, the top honor of the Innovation Awards. Aeroseal was recognized as “a groundbreaking solution to an industry-wide problem.”
The unique appeal of the Aeroseal technology is that it seals ducts from the inside. Walls and ceilings do not need to be removed or damaged to gain access for traditional mastic sealing. Aerosolized vinyl polymer particles from 2 to 20 micrometers are injected into a pressurized duct system. The particles stay suspended in the air stream until they reach the leaks, where they are deposited and built up at the leak edges until the leaks are sealed.
The Aeroseal technology has been around for more than two decades. It was developed at Lawrence Berkeley National Laboratory in the early nineties and patented in 1997. It has received many awards over the years including the Best of What’s New award from Popular Science magazine in 1996 and the Energy 100 award from the U.S. Department of Energy.
So what’s the big deal?
HUD Innovation in Affordable Housing (IAH) Update – Santa Barbara Site Visit
On March 9, the four finalist teams from this year’s HUD Innovation in Affordable Housing Student Design and Planning Competition (IAH) visited the Housing Authority of the City of Santa Barbara, California (HACSB) project site. Multi-disciplinary teams of graduate students are competing to develop a holistic solution that would allow the HACSB to meet its goal of offering safe and sustainable affordable housing to area residents. Teams are given the option of rehabilitating the current structure, or demolishing and rebuilding. The winning project proposal will thoroughly address design, community development, and finance in their solution.
Hotels, Motels, Reining Emissions In
I’ll save the long-winded introduction and get straight to the facts. Based on New York City’s publicly available Local Law 84 (LL84) benchmarking data for 2015, hotels emit 32% more greenhouse gas (GHG) per square foot than the average for all buildings. I also want to qualify this by making a few statements about the data:
- There are 13,973 buildings on the Department of Finance list; of which 2,353 did not comply with LL84 or are not required to comply.
- We removed the outliers. Weather-normalized source energy use intensity (EUI) over 550 and under 100 (kBtu/ft2) typically indicates erroneous data. Most likely either the building’s benchmarking activities or report filed with NYC were completed incorrectly.
- A significant portion of the list comprises the buildings with erroneous data: 4950. Seems a little crazy, no? Leaving us with a good topic for another day….
- For clarity, that means we analyzed the remaining 6,654 buildings.
The good news – for the sake of this post – is that the hotel market had one of the higher rates of correctly reported compliance data. Out of 187 buildings, 143 reported with numbers that were in a normal range. The average for the sector however, reflects EUI and GHG emissions per square foot that are much higher than other similar building types. Multifamily buildings, for example, have an average of 42% lower GHG emissions/ft2 than hotels (see table below). (more…)
NYC Walks the Line Toward Hurricane Joaquin
It’s October and a burgeoning category 3 hurricane is forecasted to make its way up the East Coast within the coming week. Somehow this all seems familiar.
It’s been 3 years since Superstorm Sandy came ashore in the New York Metro Area. Much of the damage has been repaired and structures rebuilt, but have we done enough to mitigate the impact of a similar catastrophe? I think we can all agree that likely, we have not. However, progress has been made, and at SWA, we have been working hard over the past 3 years to improve the strength of our buildings through providing resiliency assessments and remediation planning. It’s not a fix-all for the region, but it has helped some buildings to implement upgrades that might make a big difference in the next week. (more…)
Innovation in Affordable Housing Competition Results in Bicoastal Winners
On April 21st the four finalist teams from the 2015 HUD Innovation in Affordable Housing (IAH) Student Design and Planning Competition gathered at the HUD headquarters in Washington, DC to take part in the Final Four Jury and Awards Presentation (you can read more about the competition here). There, the graduate student teams presented their final submissions to the jury and audience for either the rehabilitation or redevelopment of Bayou Towers, a 300-unit residential high-rise that is home to over 500 senior citizens of the Houma-Terrebonne Parish in Louisiana.
CT Zero Energy Challenge (Part 2) – An Alphabet Soup of Certifications
Earlier this week, we posted a video about the CT Zero Energy Challenge’s first-place winner, the Benker/Wegner Residence. Today we bring you the story of the third-place winner in this year’s challenge, the Taft School’s Residence. Aside from housing faculty members, the home is serving as a teaching aid for Taft students to study the design details of a high-performance home, and to understand the experience of living in one.
After installation of a 13kW photovoltaic (PV) system, the home achieved a HERS Index of -14! The SWA team is providing certification support for a slew of exciting green building programs including the stringent Passive House US™ Certification, LEED for Homes, Living Building Challenge™, and ENERGY STAR v3.1.
Question? Comment? Submit it below; we would love to hear from you!
CT Zero Energy Challenge (Part 1) – How Low Can You Go?
There were 11 projects entered into this year’s CT Zero Energy Challenge, sponsored by EnergizeCT. The single- and multi-family homes taking part in this competition are designed and constructed utilizing innovative techniques in order to try and reach the illustrious goal of net-zero energy-use.
I’m excited to report that SWA worked with 4 of the homes entered into this year’s competition, including the first- and third-place winners! For each of the three winning projects, EnergizeCT has created a video to showcase the story behind the homes, and to highlight some of the most notable features.
Today’s video is about the first-place winner, a single-family home in South Glastonbury, CT, constructed by Glastonbury Housesmith. The owners, Carl Benker and Elizabeth Wegner are first-time homebuyers who wanted to be able to live as close to “off the grid” as possible. Check out SWA’s HERS-rater extraordinaire, Karla Donnelly, discussing the competition, and how this home came to achieve an amazing HERS Index Rating of a -23!
(Right-click and select “run this plug-in” if you cannot see the video below)
The project also won the 2015 RESNET Cross Border Challenge for lowest HERS score with photovoltaics (PV)!
You can read more information on SWA’s project here.
What We’re Looking Forward to at Building Energy Boston ’15
Never fear, the first sign of spring is about to appear in Beantown! NESEA’s Building Energy Conference is just around the corner on March 3-5, bringing experts from around the country to share their knowledge about new trends and innovative solutions within the realm of building science and renewable energy.
We’re sure it will rejuvenate and reinvigorate Bostonians and all Northeasterners alike. Note: Northeasterners like the people, not northeasters like the storm, just to be clear.
As with most of the Building Energy Conferences, there will be many speakers from SWA there to lead workshops and sessions about improving the efficiency of buildings and their systems (You can read more about that here). Today though, we want to talk about the other presenters and topics that we’re excited to see!
Here are a few of our recommendations that we can’t wait to check out:
- We have been preaching about addressing building resiliency and energy efficiency, want to hear it from another trusted voice? Attend Alex Wilson’s session Putting Attention Where it is Needed Most – Building Resiliency In Multifamily Affordable Housing. March 4, 11am – 12:30 pm
- Codes are raising the bar, owners are seeing the benefits of building more efficient housing and more owners are addressing energy use at the time of capital upgrades and refi, all great news. The next wave we will see is the increase in multifamily Passive House construction and renovation using techniques where possible. Want to know how to incorporate passive house to your next project, you can talk to SWA’s Lois Arena, and you can also hear it from Katrin Klingenberg at her session The Building Science of multifamily Passive House. March 4, 4pm – 5:30 pm
- Water makes up a sizable portion of utility bills, we recommend attending Reinventing the Water Grid Part 1: Science, Behavior and Dollars. Water reduction strategies and monitoring can save money and reduce operations and maintenance costs through leak detection. We will be attending this session to reinforce what we are recommending and to see if there are new applicable techniques or recommendations we can incorporate into our projects. March 5, 10:30am – 12pm
To attend Building Energy 2015 in Boston, register here. We look forward to seeing everyone there!