Climate Data and PHIUS+ 2015

 

Adam2smAdam Cohen is a principal at Passiv Science in Roanoke, Va, a PHIUS CPHC®, a PHIUS Builder Training instructor, the builder/developer of multiple successful passive building projects, and a member of the PHIUS Technical Committee. With the release of the PHIUS+ 2015 climate-specific standard, Adam weighs in on the importance of climate data sets.

Project teams have always needed to be discerning about climate data sets they use in energy modeling.  Whether it’s WUFI Passive, Energy Plus, PHPP or any other software, the old adage garbage in = garbage out applies. Project teams always must analyze and make a call as to how accurate the climate file is.

For example, I worked on a Houston, Texas project a number of years ago and there were several climate datasets that were close and one that was very different. As a team, we had to decide how to approach this in the most logical and reasoned way.

Recently as I analyzed a Michigan project, I determined that my two dataset choices were “just not feeling exactly right” so I asked PHIUS’ Lisa White and Graham Wright to generate a custom set. I can’t know that this one is exactly right, but I know that it’s as accurate and “right” as we can make it.

Note that when multiple data sets are candidates, it is not just altitude that matters, but location of weather station (roof, ground, behind a shed, etc.). Ryan Abendroth blogged on the subject of selecting data sets (and when to consider having a custom dataset generated) and I recommend you give his post a read.

Since PHIUS+ 2015 is a climate specific standard, it’s all the more important to use the best available.  We all know that bad data is not exclusive to PHIUS (remember the Seattle weather debacle in early versions of the PHPP).

It’s incumbent on project teams to use science, reason and judgment in interpreting climate data sets. Being on the water, in the middle of a field or in the tarmac of an airport makes a difference.

In New York City, for example, we have an oddity: There are three dataset location choices.

A satellite photo of NYC with Central Park outlined. The climate date for the Park is substantially different than that for other parts of the city.

A satellite photo of NYC with Central Park outlined.

One is Central Park, and the PHIUS+ 2015 targets for that are substantially different than the others. But, counter to a Tweet calling into question the validity of the PHIUS+ NYC target numbers, they are different because the Central Park climate data is substantially different – probably due to vegetation countering the urban heat island effect. It has a dramatic and pretty fascinating effect on the microclimate, and the U.S. DOE has a nice read on the subject.

For project teams lucky enough to have access to multiple data sets for their location, by rational comparison, they should be able to make an intelligent decision to use a canned set or to have a custom set generated.

It also more important than ever that the PHIUS+ certifiers to examine the weather data provided by a project teams to see if the project team made a logical, rather then an easy selection of climate data.

In addition, we on the PHIUS Technical Committee will continue to collect and monitor data and will tweak certification protocols as we see the need. But, I remind all my fellow CPHCs that bad climate data sets are endemic in the industry and it is important that project teams make careful decisions and that they reach out to PHIUS staff to help when climate data sets just don’t seem right.

From passive house to passive buildings–what’s new and how manufacturers are stepping it up

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Exciting times indeed for passive building in the United States: Passive design principles that originated here and in Canada are all grown up and making a furious comeback. Policy makers, researchers and scientists, builders and designers are all embracing passive building in their everyday practice.

And as always, the growth is evident here at NESEA’s annual high-performance tour de force: NESEA BE15. A quick recap: Passive Building Place–a concentration of passive building component exhibitors, and the tour of their offerings, is in its fourth consecutive year. For those who remember, we started my first blog on the NESEA trade show focusing on passive house products in 2012. Passive building was still tiny then compared to what it has grown into now.

PHIUS and its membership organization the Passive House Alliance US (PHAUS) – the leading passive building research institute and alliance in the US – is the anchor of Passive Building Place for the fourth straight year.

NESEA never stands still. In its topic selection for conference workshops and presentations it continues to ask the tough questions and pushes the boundaries. I am talking about the passive building standard adaptation work we have been doing on Tuesday in a half day workshop. On Wednesday afternoon as part of the core conference I’ll be presenting about very exciting multifamily developments specifically. The Passive Building Place has become a mainstay and is expanding every year with new manufacturers who have recognized that passive building will be a significant driver for high performing materials and components.

Larger projects like Orenco Orchards in Eugene, Ore.,  by CPHC® Dylan Lamar and GreenHammer are coming on strong–they need more manufacturers to step up to the multifamily and commercial passive building market.

But, as multifamily and commercial projects come on strong, we see hesitation amongst manufacturers regarding new components and material needed for larger building developments. This follows the past trend with single family passive homes: the architects and CPHC®s (Certified Passive House Consultants) have taken on the design of the first larger buildings find themselves ahead of the curve.

While this might sound glamorous to some, in practice it is quite a challenge for the teams. Architects are out to make ambitious reductions in energy and carbon with large buildings, and they need appropriate high performance components. In principle, much of what’s been learned and accomplished in single family applications is transferable. Ideally, however, manufacturers will develop turnkey and warranted solution packages for multifamily and other large buildings. What about superinsulated thermal bridge free airtight curtain wall systems? Is this too much to ask for?

Here’s a good place to start: At last year’s 9th Annual North American Passive House Conference in San Francisco, five leading multifamily passive building teams came together for a presentation.  The one component they all wanted was a fire-rated door, that complies with ADA requirements of a low threshold, is airtight and has exceptional thermal performance comparable to the passive house windows that have taken the BE Passive Building Place by storm over the past few years.

To see what’s cooking this year, we are back for another tour of the trade show with you! I will have the pleasure of guiding a tour on Wednesday, March 4 beginning at 5.30 pm just before the boat tour. We’ll be visiting exhibitors who offer products and components germane to the passive building community. We will stop at selected passive building place exhibitors and Passive House Alliance sponsors inside and outside Passive Building Place. Because there are so many it’s impossible to visit all–instead we’ll focus on innovations and a more in depth conversation of 5-10 minutes discussing the manufacturers’ products.

Also different this year:  We will take the investigative role and instead of highlighting the passive building products we’ve seen in past years, we will challenge vendors with a different question: What are you doing to support larger passive building developments? Are you seeing the effects from it in your practice and what are you doing to respond, to prepare for it? Are there new offerings in the pipeline? What are designers asking for, what is missing?

Our goal is to identify the gap so that we can fill it. We like to inspire manufacturers to take the growth in passive building seriously. Please join us on this tour to hear from manufacturers what they are hearing and to ask the right and tough questions to inspire more high performing systems development for larger U.S. passive buildings.

Twenty-four exhibitors are joining us this year in the Passive Building Place or elsewhere on the floor–they include sponsors of PHAUS, firms with PHIUS certified professionals on staff, firms offering PHIUS verified windows or doors, or that are collaborating with PHIUS/PHAUS otherwise. Those partners are listed here:

475 High Performance Building Supply (Booth # 759)

Auburndale Builders (Booth # 913)

Bright Build Home (Booth # 549)

Conservation Services Group (Booth # 709)

Fraunhofer CSE (Booth # 660)

H Window/Energate (Booth # 642)

Huber Engineered Woods (Booth # 743)

Klearwall Industries LLC (Booth # 862)

Intus Windows (Booth # 624) PHAUS Green Sponsor

Marvin & Integrity Windows (Booth # 939) PHAUS Silver Sponsor

Mitsubishi Electric (Booth # 707) PHAUS Silver Sponsor

New England Homes by Preferred Building Systems (Booth # 919)

Passive House Institute US/Passive House Alliance (Booth # 753)

Pinnacle Windows Solutions (Booth # 763)

PowerWise Systems (Booth # 814)

PROSOCO Inc. (Booth # 949) PHAUS Green Sponsor

Roxul (Booth # 860)

Schock (#636)

SIGA Cover, Inc. (Booth # 620)

Steven Winter Associates (#844)

Stiebel-Eltron Inc. (Booth # 749)

Yestermorrow Design/Build School (Booth # 1036)

Zehnder America, Inc. (Booth # 864) PHAUS Friend Sponsor

Zola Windows (Booth # 755) PHAUS Friend Sponsor

 

We won’t have time to stop at all passive building component vendors, but we urge you to stop check them all out as you find time. Make sure to stop by:

Dryvit (Booth # 430)

Enovative (Booth # 945)

European Architectural Supply (Booth # 727)

Fantech (Booth # 828)

Foard Panel (Booth # 830)

Green Fiber (Booth # 717)

Led Waves (Booth # 628)

Main Green Building Supply (Booth # 622)

Retrotec (Booth # 541)

Sanden International (# 563)

Schock USA (Booth # 636)

Tremco Barrier Solutions (Booth # 719)

Viessmann Manufacturing (Booth # 565)

Yaro DSI (Booth # 638)

Thank you all for participating in this and putting your weight behind this exciting emerging construction market. Again, you are true leaders in this market transformation towards high performance building products that is so needed to achieve zero/positive energy buildings through passive design. Thanks again for joining!

And have a great BE15!

A message from Chris McTaggart, QA/QC Manager, PHIUS+ Program

New PHIUS+ QA/QC Manager Chris McTaggart

PHIUS has contracted with Chris McTaggart of Building Efficiency Resources to serve as our new QA/QC manager in support of the PHIUS+ Rater program.  For more information on this transition, please read a special message from Chris below.

Dear PHIUS+ Raters and constituents,

I am thrilled to have the opportunity to work with the Passive House Institute US as the QA/QC Manager in support of the PHIUS+ Rater program. My role will be primarily in working with PHIUS+ Raters to provide technical support and quality assurance review of documentation submissions for PHIUS+ Certified projects. Additionally, I will be supporting PHIUS as an organization by participating in the PHIUS Technical Committee and helping to refine and develop the passive house program certification standards.

I would like to thank the previous PHIUS+ QA/QC Manager, John Semmelhack, for his leadership in managing and developing the PHIUS+ Rater program. John is a first-rate professional, extremely knowledgeable building scientist, and an exceptionally personable and friendly person, and PHIUS has benefited tremendously from all the effort John was able to provide to the organization. I greatly appreciate John’s recommendation to PHIUS that I succeed him, and will do my best to pick up where John left off for all of our benefit.

A bit about my background… I am the co-principal and lead RESNET Quality Assurance Delegate (QAD) for Building Efficiency Resources (BER). BER is a national third-party RESNET QA Provider that works with over 150 independent raters and rating companies in 25 states. Throughout the past 6+ years, I have worked almost exclusively in providing technical support, training and mentorship to RESNET HERS Raters to help them understand program standards and how to execute their role in providing third-party verification. Additionally in this role, my company performs QA review of energy rating files both using site verification documentation as well as in the field.

In my role as QA/QC Manager for PHIUS, I hope to achieve the following:

  1. Provide thorough and timely technical support to PHIUS+ Raters and other program constituents regarding the role of third-party verification of PHIUS+ certification standards.
  2. Review all PHIUS+ project certification submissions by PHIUS+ Raters for accuracy in order to ensure that all program certification criteria is being properly verified.
  3. Help refine and improve the PHIUS+ program certification standards and affiliated documents so that PHIUS+ Raters clearly understand their role in performing verification services for PHIUS+ Certified projects, and so that role is as streamlined and efficient as possible.

As many of you know, the PHIUS+ certification standards are being evaluated and updated to help the program achieve greater levels of consistency and participation in the marketplace. A huge part of this process will be to properly codify the role and scope of third-party verification and quality assurance oversight of these standards so that consumers and program constituents are confident in the results of PHIUS+ certification.

My role in achieving success in this development process is clear: help make the on-site verification process for PHIUS+ certified projects as clear, organized and efficient as possible for all parties involved. This will ensure that PHIUS Certified Passive House Consultants (CPHCs), Raters, and affiliated project architects, engineers, owners, etc. will all be able to understand and communicate with one another about the program certification requirements. The end goal of this process is that PHIUS+ Certification and verification criteria is uniformly achieved and projects are successfully certified.

Achieving the above will require significant effort and feedback from PHIUS constituents regarding the current certification process so that future versions of the certification standards are as clear as possible. I encourage all of your participation and communication throughout this process, and encourage you to reach out to me with any questions, technical support issues or feedback that you may have.

I look forward to working with all of you.

Sincerely,

Chris McTaggart

cmctaggart@theber.com

800-399-9620×4

The North American Passive House Conference in San Francisco – a hard act to follow for NAPHC2015 (in Chicago)

Every year we say “This was the best passive house conference ever, we better stop now, we can’t possibly top this experience, the quality of the presenters, the “meat on the building science bones” presentations, technical details and specific construction solutions, cutting edge projects of all building types showcased throughout all climate zones, policy and government role discussions and incentives… and this year in addition to the Builders’ Hootenanny the Architects’ Hootenanny which, you might have guessed, was a hoot.

Let me take this opportunity to thank our community of longstanding CPHCs, PHIUS Certified Builders and PHIUS+ Raters who have shared this passive building path with us now for almost 10 years. It has been a pleasure knowing so many great folks with their hearts in the right place and a common characteristic: a determined pioneering spirit to make the energy transition in the way we build and live happen. Thanks to all passive building practitioners and to newcomers to the conference especially the international speakers from the UK and Japan.

Together you submitted nearly 100 abstracts and we had a hell of a time to choosing the best ones. We ended up with an unprecedented total of 72 sessions in 4 tracks this year, more than ever before (we cut the plenary short upon your request to get to the meaty sessions quicker and to have more of them).

Special thanks go to Sam Rashkin from the DOE, for his invaluable contributions to the tracks on government perspective and for the great partnership he and the DOE have provided to the PHIUS+ certification program over the past couple of years. Sam took time to be with us on the Sunday tour of passive buildings in the bay area, which was a lot of fun.

I would especially like to thank all of our outstanding pre-conference workshop presenters who covered topics in great depth, most popular were the Multifamily Palooza (kicked off by Chris Benedict who currently leads the field with the most passive projects in this sector realized), Passive Building Science with Joe Lstiburek (our unofficial lounge sponsor), packed the house closely followed by Mechanical Systems and commercial applications. Many thanks to the outstanding instructors who tackled more specific technical issues and new frontiers, such as efficient water systems design by Gary Klein, and Matthias Patzold from the Fraunhofer IBP and PHIUS staff presenting on dynamic energy modeling in WUFI Passive, THERM/windows modeling and PHIUS+ certification QAQC during the rater training. To all our presenters, pre-conference and main session: Thank you all so much! It would have not been possible without you!!!!

We owe many thanks to Michael Hindle, our charismatic Master of Ceremonies, and President of the Board of Managers of Passive House Alliance US (PHAUS). His opening speech was inspiring, artful and philosophical, The Passive House Alliance is now 16 chapters strong with 7 more in formation all over the country. It is starting to develop an impressive momentum regarding advocacy for passive buildings across the nation. Michael pledged to the membership that he would keep increasing member benefits and participation opportunities and closed with a call for action to join the many committees that have been formed to get the work done.

Michael also made a very well received announcement: the PHAUS  board has moved to remove any reference to a specific passive house standard from chapter founding documents. This decision rightly recognizes that since the inception of the passive house concept in the 70s in North America, it has undergone more than just one transformation and that evolution and learning will continue. It must continue to evolve for us to be successful. PHAUS leadership supports the new climate specific Passive Building standards brought forward by PHIUS as part of such evolution.

Bill Rose followed with the most thoughtful, most provocative keynote given at the North American Passive House Conference yet. Many of you came to me afterwards expressing that sentiment. He showed a short video recording from the early 70s of the researchers credited with formalizing the superinsulation/passive concepts. They worked at the Small Homes Council, University of Illinois at Urbana-Champaign in Illinois. The video reinforced the notion that the passive house community has a longstanding history here in the United States. He then showed a document written by the Nixon administration predicting peak oil and climate change to happen in 2010. It was a stunning piece of evidence that the issues had been known then, as well as the possible remedies outlined in the document. The document, then issued a clear call for action, recognizing the emerging passive community as having the best approach for reducing the demand side of buildings.

Rose made clear that facing the climate crisis means we also need to step up to transform the supply side of the system, coming up with strategies of how to keep the fossil fuel reserves in the ground and how to challenge the current economies that are all built around such assets. He ended provocatively saying, that we need to get to a point where we will be saying: “Energy (fossil fuels), what’s that?”

After the keynote and during all breaks, the exhibit hall was buzzing. A big thank you to all exhibitors of high performance materials and technologies! Every year the cast has been expanding significantly and new useful materials and systems manufacturers join the core group of providers. Thank you, without your products and services it would be impossible to realize passive buildings as well as we now do. Of course, also thank Exhibit Hall sponsor Bayer MaterialScience and our lanyard sponsor Hayward Lumber. Bill Hayward joined us on the tour and provides some great local background. Be sure to check the Hayward Health Home, a very cool initiative.

Achilles Karagiozis delivered the closing keynote. He spoke on the view forward, the implementation of passive buildings worldwide in all different climate zones and the challenges and responsibilities that come with it. He stressed the importance of dynamic modeling for accurate energy prediction results as passive building is applied in different climate zones. He cited an astounding example: WUFI Passive is now able to predict insulation material dependence on temperature on an hourly basis. And of course, this is important to assess hygrothermal performance of enclosures as well as to get the energy balances calculated with more accurate granularity. A great new age has arrived for us designers to manage our risks in designing passive buildings, thanks to the emergence of more powerful computing capabilities that make dynamic models feasible.

At closing, maybe best of all, the incredible sense of community of people who trust each other and know each other well:  We have been coming together now for almost a decade, reuniting at this amazing annual event working together to devise solutions for the North American market, its climate zones and building sector.

And this year, for the first time, the event was held in one of the largest and most exciting metropolitan areas: the San Francisco Bay area. This meant a significant step up from the previous conferences and importance in visibility of our community to city and government leaders, in California and beyond.  Passive building has turned the corner. And so has PHIUS as we were more than once told during the event by you.

PHIUS’ Senior Scientist Graham Wright’s presentation on new North American Passive Building Standards that are currently being completed under a DOE Building America grant was very well received: “This sounds like a really good program” was consistent feedback. The interest was so large that the session had to be moved from the break out room to the ball room. Most everybody was in support, not one negative comment! Kudos to excellent work by Graham Wright and a clearly laid out and scientifically founded argument by the tech committee.

And last but not least thanks to the PHAUS San Francisco chapter and John Sarter and Lizzie Adams from PHCA for helping to organize a fantastic tour of project on a beautiful Sunday in paradise: From multiuse building to state of the art office building to residential retrofit projects, it was great!

Thank you all for coming, for your contributions, participation and feedback on what to do better next year. Keep it coming so that the next act will be better yet again… see you in Chicago, details to come!

 

 

 

 

Passive house for the rest of us

Since 2008, when PHIUS launched its consultant training program, more than 500 architects, engineers, and energy consultants have taken the training, passed the computer-based and take-home exams, and earned qualifications as a PHIUS Certified Passive House Consultant (CPHC®). This group has driven the growth of passive building in the United States and Canada.

With the advent of the new format for our CPHC training—which delivers Phase I via live virtual sessions, becoming a CPHC has become more affordable and convenient, and the number of CPHCs continues to grow. (The next virtual program begins August 20, and in-class locations for September include Washington, D.C.; Golden, Colo.; and Providence, R.I.)

CPHCs can’t do it alone, though. That’s why we launched the PHIUS Certified Builders program last year – to develop a community of builders who understand passive principles and can work side by side with CPHCs on projects.

And, now, I’m happy to report that in partnership with  the Northeast Sustainable Energy Association (NESEA), we can offer training tailored to another critical audience: firm owners, managers, policy makers, developers and other project stakeholders who want to know about passive house, but for whom full CPHC training is not appropriate.

This group of professionals are critical to the making passive building mainstream. They need to understand passive house fundamentals — to speak passive house — but don’t need the same kind of hands-on training and technical expertise that architects and builders do.

The new NESEA BE Masters program – called Passive Building Fundamentals — meets this need. I’m working with NESEA’s experienced online training team to create a series of modules. Participants have between September 23 and November 29 to complete the 10-module program on their own time and their own pace .

Like our CPHC training, Passive Building Fundamentals will give participants a firm grounding in the fundamental building science principles of passive design: Superinsulation, airtight envelopes, management of solar gain, ventilation strategies, and a look at climate-specific challenges.

Unlike CPHC training, however, the course will focus on these fundamentals, but not delve into the intricacies of passive energy modeling – a capacity that designers need, but managers and other decision makers do not.  Participants will learn everything they need to know to work with CPHCs and passive building teams, managing and quality assuring the process, managing risk–and making the sale.

Whether you own or manage an architecture firm or construction business; you’re a commercial or an affordable housing developer; a government policy maker; or you’re thinking about building your own passive house: This is the program for you!

Check it out at:

http://nesea.cammpus.com/courses/certified-passive-house-phase-1–online

And pass word along!

Regards,

Kat