Wednesday, September 10, 2014

Green Buildings Set the New Standard

by Jessica Roche, Massachusetts Biotechnology Council

Cambridge has joined Boston in enacting a building energy disclosure ordinance, under which owners of buildings more than 50,000 square feet will be required to report their energy use beginning in May 2015. 

Life sciences spaces have higher necessary energy use than typical residential or office buildings, as they must accommodate complex air ventilation and water flow systems, as well as meet stringent safety requirements. But lab developers and users have long worked
toward greater energy efficiency, and impressive developments in lab design and operations have made new lab spaces in Massachusetts showcase projects for replication throughout the world. 


The Center for Life Science (above), an 18-floor research building in Boston, utilizes energy sub-metering that allows users to closely monitor use. It was no small effort; it required substantial investment in new systems, consensus protocols among users, and intensive data mapping. 

“With more transparency and accountability, tenants are dialing down on their equipment usage,” said Peter Damiano, Sr. Facility Manager of BioMed Realty Trust, the company that owns the Center for Life Science. The system has changed operating conventions,
reduced energy consumption, and become a roadmap for BioMed in improving efficiencies within its global building portfolio.

At MIT’s Koch Institute building in Cambridge, completed in 2011, cutting-edge efficiency design was at the forefront. The building is oriented east to west to maximize heat and light from the sun. Light-shelves bounce sunlight to the ceiling, bringing ambient light deep into the building to reduce dependence on electric lighting. Its ventilation system uses a “cascading design” by which office cooling air is reused in lab hoods, air flow rates are at a reduced 80 feet per minute, and labs are aligned to reduce duct work. Electrical systems were “right-sized,” not overbuilt. 

The results are striking. Anticipated 14.6 watts per square foot usage are at 3.8 watts instead. Steam heat that was projected at 35,000 pounds per hour for the coldest days is at 20,000 pounds. The building reduces total energy use by more than 30 percent as
compared to a standard laboratory facility. Walt Henry, MIT’s Director of Engineering at the time, explained in an MIT News article, “To get a building that performs well requires only that you make intelligent choices.”



Intelligent choices like those made by Biogen Idec, which has already surpassed its goal of reducing its overall environmental footprint by 15 percent by 2015 even as it adds in facility square footage. Biogen Idec’s greenhouse gas intensity goal is to reduce Scope 1 and 2 emissions by 80 percent by 2020. Its two new Cambridge buildings achieved LEED Gold and Platinum certifications from the U.S. Green Building Council. Biogen Idec’s
campus is powered by its cogeneration plant, which produces 75 percent of the campus’ electricity and 100 percent of its steam. Cogeneration has helped lower emissions by more than 150,000 metric tons of CO2e on the campus since 2006. 

These examples of recent lab developments provide models in energy efficiency that set the standard and point the way for energy sustainability.

[This article originally appeared in the summer edition of MassBio News]

Monday, September 8, 2014

Bring the Outside In! 10/2 in Boston

Buildings are designed to shelter us from the harshness of nature, but the most comfortable and energy-efficient indoor environments are those that use the free resources of the outdoors for heating and cooling. For many architects, using the outdoors to create more comfortable indoor environments means using operable windows for natural ventilation. For mechanical engineers, bringing the outside in means using an airside or waterside economizer. However, these simplified versions of climate responsive building design ignore other possibilities for harvesting outdoor thermal resources to maintain indoor comfort.


 Although opening windows and using economizers have their benefits, they can also create new problems, such as indoor pollution through the introduction of outdoor particulates. These deficiencies can be overcome by smart design strategies that make better use of the exterior thermal resource. Strategies that enable the design team to minimize building energy consumption without compromising occupant comfort include:

  • Dividing free cooling into two components: humidity control and sensible cooling. This way, free sensible cooling can be provided, even when energy-consuming indoor dehumidification is required.
  • Achieving thermal comfort not only by convective heat exchange between the human body and the air but also by radiant exchange with building surfaces.  Use free natural resources to cool interior surfaces to maintain comfort.
  • Recognize that the outdoor thermal resource also has three components: sensible, evaporative and radiant.  Create systems that can use each of these components as they are available and are not dependent on their simultaneous availability.
  • Recognize that outdoor thermal resources may not be available coincidentally with indoor thermal requirements.  Add controllable capacitance (thermal storage) to the system to harvest outdoor thermal resources when available for later delivery for indoor comfort maintenance.
Attend this great educational session on Thursday morning, October 2nd – “Bring the Outside Inside: Using the Outdoors to Create Indoor Comfort”, with Thornton Tomasetti’s Gunnar Hubbard, principal, and Syska Henessy's Daniel Nall, vice president and regional director of high performance solutions, who will talk about how to make better use of available environmental resources to increase indoor comfort.

Friday, September 5, 2014

The Weekly Bulletin to 9/5/14

USGBC MA Chapter is moving full steam ahead! Lots going on. And you could be our 500th "Like" on facebook - like us right now! Thanks.


Coming up:

This Monday the 8th: Residential Green Building Committee. They will be hosting a presentation about sustainable forestry and timber construction from Michael Sigmon and Jack Mackin of Chapter Sponsor Sterritt Lumber. 

Our Combined Committees Quarterly Gathering will be Thursday, Sept. 11th, and will be our official "Open House" at our new offices. All Chapter working group and committee leaders are invited to attend. This is a great opportunity to come and meet other green building activists and change agents. We will be discussing the topic "Leadership," exploring how to succeed with our Q4 Membership Drive, and breaking out into working groups (committees etc.) to start the 2015 budgeting process. If you haven't yet come over to our new space at 50 Milk Street right in Downtown Crossing, this is a great opportunity to visit.

Don't delay in signing up for a Green Apple Day of Service opportunity: there are a lot of projects just waiting for volunteers like you. Use this link to look up a project near you in Massachusetts - by zip code. It is going to be a lot of fun - there are projects on many dates throughout the coming weeks.

And now for something completely different: 





And surely you are already thinking about it: Tuesday the 30th of September: The LEED Project Showcase! Reach out to your colleagues now! We want their certified projects to be in our show. This is a major fundraiser for the Chapter and it's going to be an excellent time for all. If you know someone who is "on the fence" - put them in touch with Grey. Thank you to the many existing sponsors so far:
  • National Grid
  • NStar
  • Boston Properties
  • Richard Moore
  • Chapman Construction
  • Columbia Construction
  • and over a dozen project sponsors...
And more are signing up every day!


Hope you're enjoying the post-labor day "Still Summer!" weather:

Do you know this pond? Hint: Western New Hampshire

Tuesday, September 2, 2014

Zero Net Energy: the latest trend in high-performance buildings

by Suzanne Abbott, Gilbane Building Company

For the past century, okay decade, LEED certified buildings have been the premier standard in high performance sustainable buildings. Other standards like the Living Building Challenge, Passivhaus (more recently Passive House), and Zero Net Energy (ZNE) verified buildings were signals of over achieving designers and owners looking to make a statement. These high benchmarks were viewed as complex and expensive goals that design teams were lucky to participate in only rarely. Recently, ZNE seems to be trending throughout Massachusetts and across North America. ZNE buildings currently contribute to a small fraction of all green buildings, but if you have sat through a presentation or read an industry article lately, you know the market is changing.

North Shore Community College - Net Zero!


The New Buildings Institute (NBI) defines Zero Net Energy buildings as buildings with greatly reduced energy loads such that, averaged over a year, 100% of the buildings' energy use can be met with onsite renewable energy technologies. Project teams achieve highly energy efficient designs through thoughtful material choice, passive energy strategies and intelligent system design and sizing. Then apply renewable power generation to reach ZNE status. In the past, owners were reluctant to invest in what was a costly and time consuming project path to ZNE. Through increased incentives, more aggressive energy codes and policy, less expensive renewable energy systems, and more experienced design teams, ZNE now comes at a much smaller additional cost and is gaining market share. An experienced team will incorporate early energy analysis, and an integrated design approach to manage these costs. According to a report released in early 2014 by NBI, the number of buildings achieving or pursuing ZNE across North America has more than doubled since 2012. With those kinds of numbers if it was a product on the popular show Shark Tank, I would invest in it.

ZNE is achievable in a wide variety of regions and climate zones, working for many building types and sizes. These buildings use only a quarter of the energy of average commercial buildings, repaying incremental costs applied during design and construction as significant operational savings. Much like other sustainable building objectives, ZNE is achieved by careful design, selecting the right technology for the project's specific needs, controls, monitoring and constant feedback and commissioning. In other words, a lot of work! But the benefits in terms of energy savings and building resiliency are worth it.
NBI states that 24% of all ZNE verified projects are now renovated existing buildings, once considered a near impossible feat. This bodes well for Americas aging building stock especially in larger cities in the northeast like New York and Boston that have building energy policies, like Boston's Building Energy Reporting and Disclosure Ordinance (BERDO).

ZNE districts are also a growing trend. Communities and campuses are committing groups of buildings to achieve ZNE, taking advantage of economies of scale. Today there are currently 18 ZNE districts in the US. Community district efforts are organizing everywhere. In December 2013 the city of Cambridge, MA created the Zero Net Energy Task Force that has been charged with advancing the goal of putting Cambridge on the trajectory towards becoming a "net zero community".

In the last few years ZNE buildings have gone from impossible to improbable to finally achievable. ZNE buildings are becoming the new standard for achieving significant energy savings and reducing greenhouse gas emissions in the built environment, a market transformation tool much like LEED. Do you remember when LEED certification was a statement?

Suzanne Abbott is business development manger at Gilbane Building Company, Boston, Mass.

The Yawkey Station - slated to go net-zero by 2017