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    Arts

    The Building Science Podcast

    The Building Science Podcast is a show hosted by MEP engineering firm Positive Energy principal Kristof Irwin. The show covers everything from the basics of building science to adjacent scientific disciplines to more fully understand how the built environment shapes our lives as human beings on planet earth.

    Advertise

    Copyright: © Ecoscience, LLC, DBA Positive Energy

    • Apple Podcasts
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    Latest Episodes:
    "Faster Horses" & The Future Of HVAC Oct 23, 2020
    Show notes

    When Ken Gehring began his career servicing dairy equipment, who would have guessed that he would go on to pioneer some of the most important equipment to hit the HVAC market? But that’s exactly what he did, leading the charge in the development and creation of the Therma-stor product lines, which include the Santa Fe and Ultra-Aire dehumidifiers that you’ve heard us talk about many times. Join Kristof as he and Ken explore a range of topics on human health, indoor air quality, dehumidification, ventilation, building envelope leakage, and more. Just FYI, we curse a little on this episode so if you’re around sensitive ears, be sure to stick some ear plugs in them.

    Disclaimer: Therma-stor has sponsored previous episodes of this podcast and is a current equipment sponsor of the show. Big thanks to their continued support the last 6 years that has kept this show going!

    _________

    Ken Gehring, President Emeritus, Therma-stor

    Ken Gehring is the President Emeritus and chief troublemaker at Therma-stor in Madison, Wisconsin. His career has spanned the divide between refrigeration service and engineering/product development and his expertise and leadership has led to the development of many products considered a normal part of construction in the 21st century. Ken has a treasure trove of personal stories that paint a picture of the HVAC industry’s evolution over the last 40+ years and its rapid changes in the last decade.

    _________

    HVAC Talk

    An online forum for HVAC professionals and homeowners to discuss and problem solve issues both normal and strange. You can find Ken’s username, teddy bear, via this link.

    _________

    2016 Risinger Interview With Ken

    https://www.youtube.com/watch?v=bsIq-vI_Cnc
    Team

    Hosted by Kristof Irwin
    Edited and Produced by M. Walker


    Through The Looking Glass Of High Performance Windows Sep 23, 2020
    Show notes

    What do we actually know and have available to us in the United States market when it comes to high performance windows? The answers may surprise you. Join Kristof as he interviews Sam McAfee of Zola Windows in a wide ranging conversation of window performance, market dynamics, and the future of high performance windows.

    Sam MacAfee

    Sam McAfee has been a student of green building ever since buying his first Earthship books back in 1988. Since then, he has received an MFA in Sculpture from UC Berkeley, designed web experiences for Gucci, HBO, & Showtime, and launched the green-contracting company Sumner Green that executed one of the first PH retrofit projects in NYC (2010).

    He went on to co-found 475 High-Performance Building Supply, co-design the Zola Historic Simulated-DH window being used in many landmarked Passivhaus projects around the country, and started SGbuild Consulting that worked alongside Baxt Ingui Architecture to complete the first certified Passivhaus in Manhattan (2014) and the First Landmarked Passivhaus in NYC (2014). Over the last 4 years, he was co-founder & CTO of Fentrend.com, a global window & door marketplace, and designed/developed the permit data analysis portal FenIQ (iq.fentrend.com).

    He is currently with Zola Windows (www.zolawindows.com) and in charge of their NYC client support & market development and has launched the NYC Low-Carbon Building Social Networking group focused on expanding the reach of high-performance building knowledge into other segments of the NYC real estate market.

    Zola Windows

    “Zola is committed to offering its customers products that stand apart from the competition. We are continuously innovating and improving our windows and doors to ensure that we can offer the highest performance and quality on the market. We are proud of the recognition that has brought us in the architectural and building communities.”

    https://www.zolawindows.com


    Ventilation & Virus Transmission Prevention (And Other Topics Too) Aug 07, 2020
    Show notes

    How well do we understand the behavior of the novel coronavirus in our homes? What can we do to make our homes healthier? What is a CERV? These questions open the door to a rich exploration of the role of ventilation in healthy indoor environments. And you’ll be surprised to find how intimately connected ventilation is to a future powered by solar PV. Join Kristof as he interviews Ty Newell in a broad exploration of topics relevant to any building science aficionado.

    Ty Newell, PhD, P.E.

    Professor Emeritus - University of Illinois at Urbana Champaign
    Engineer/Owner - Build Equinox

    After a distinguished career at one of the country’s finest research institutions, Ty is now the owner/engineer at Build Equinox, focused on developing technologies for sustainable, healthy and comfortable living. They are the company responsible for manufacturing the CERV ("serve") smart ventilation system for residences. He’s an all around brainiac and kind soul.


    The Westford Summer Camp Blues Aug 03, 2020
    Show notes

    For the first time in its 24 year history, the Westford Symposium on Building Science was forced to take a hiatus by the SARS-CoV-2 pandemic (it would have began as of the release of this episode). If you’ve never heard of this conference, you’ve been missing out. It’s one of the most incredible hubs of building science knowledge exchange and community building in North America. Obviously, we were sad about missing it so we decided to ask the founders and hosts of the conference for an interview. Join us as Kristof interviews Joe Lstiburek and Betsy Petit about the history, meaning, and impact of “Building Science Summer Camp.”


    Joseph Lstiburek

    Ph.D., P.Eng., ASHRAE Fellow

    Principal, Building Science Corporation

    Joseph Lstiburek is the founding principal of Building Science Corporation. Dr. Lstiburek’s work ranges widely, from providing expert witness testimony to overseeing research and development projects, to writing for the ASHRAE Journal and buildingscience.com. Dr. Lstiburek’s commitment to advancing the building industry has had a lasting impact on building codes and practices throughout the world, particularly in the areas of air barriers, vapor barriers, and vented and unvented roof assemblies. For example, his work with industry partners through the Department of Energy’s Building America program led to significant research into the wetting and drying of walls and ultimately to a major code change relaxing the requirement for vapor barriers in the International Residential Code.

    Dr. Lstiburek is also an acclaimed educator who has taught thousands of professionals over the past three decades and written countless papers as well as the best-selling Builder Guides. Fittingly, the Wall Street Journal has described him as "the dean of North American building science." He has a joy for telling tall tales to his protégés and audiences.

    Dr. Lstiburek holds a Bachelor of Applied Science in Mechanical Engineering, a Master of Engineering in Civil Engineering, and a Doctor of Philosophy (Ph.D.) in Building Science. While still an undergrad, Dr. Lstiburek worked as a residential construction manager; during his Master’s degree, he developed the Air Drywall Approach to air barriers. Other formative experiences include working on the Canada-wide Super Energy Efficient Housing R-2000 program and serving as senior engineer on commercial construction projects for Trow in Toronto. Dr. Lstiburek founded BSC in 1990 with his business partner Betsy Pettit, and he has been a key figure in establishing BSC as one of the most influential, innovative, and respected building science firms in North America.


    Betsy Pettit

    M.Arch., FAIA

    President, Building Science Corporation

    Betsy Pettit is the president of Building Science Corporation and is a registered architect with over 35 years of professional experience in the design and renovation of residential, commercial, and institutional buildings. With a particular passion for and commitment to environmentally responsible design, Ms. Pettit managed Building Science Corporation’s role in the Department of Energy’s Building America project for the past twenty years, which has involved the design of over 2,000 high performance houses throughout the United States.

    Consistent with her philosophy that environmental responsibility ought to also be economical, Ms. Pettit has done extensive work to advance the building industry in the area of energy efficient affordable housing, partnering with Habitat for Humanity, as well as developers and builders across the United States. She is the former Director of Modernization and Redevelopment in the public housing division of the Commonwealth of Massachusetts Executive Offices of Communities and Development, where she oversaw over $120 million of building improvements to Massachusetts’ 40,000 units of public housing.

    Ms. Pettit has given seminars on the subject of healthy and environmentally responsible housing to builders and architects across the country, and she has contributed to many procedural and technical manuals and papers to guide designers and contractors in the area of high performance design. She has also served as chair of the Northeast Sustainable Energy Association (NESEA) Buildings Conference, where BSC staff members are frequent presenters.

    Ms. Pettit holds a Bachelor of Applied Science in Environmental Design from Miami University and a Master of Architecture from North Carolina State University. Based on Ms. Pettit’s “notable contributions to the advancement of the profession of architecture,” she was elected to the College of Fellows of the American Institute of Architects in February 2008.




    Obsessed With Humidity Jul 18, 2020
    Show notes

    The world’s climate is changing and so the way we think about design needs to change with it. But before we know what that looks like, let’s dig into the science and understand how it might change. And as we think about expanding humid climate zones in the era of climate change, what does the cutting edge dehumidification technology look like? You’re going to find out. Join us as Kristof interviews Pamela Cabrera about the expansion of humid climate zones in the future and the development of passive, membrane-based dehumidification.

    _______

    Pamela is currently a project climate engineer at Transsolar. Cabrera’s research centers on building science and new material assemblies for passive climate control systems. Her professional experience has alternated between New York and Lima, where she co-ran the studio CE-AD for three years. She is a partner at the Peruvian NGO Construye Identidad, where she contributes with research on the development of vernacular building and materials. She has a BArch from The Cooper Union and a Master’s in Design Studies in Energy & Environment from Harvard GSD, where she received the Daniel L. Schodek Award for Technology and Sustainability.

    _______

    Abstracts For Pamela’s Research Work

    Uncovering Future Mold Risks in Existing Residential Walls with Climate Change
    Pamela. L. Cabrera1 , Holly W. Samuelson1 1 Harvard University, Graduate School of Design, Cambridge, MA, USA

    This paper exposes the vulnerability of prevalent, wood-framed residential envelopes to mold-growth in predicted future weather, a topic that is yet to be explored in scientific literature. In the U.S. and elsewhere, residential exterior walls have followed a tradition of layered construction, including interior insulation to mitigate heat loss and vapor membranes to control moisture. These building assemblies, and their defining codes, have been designed for a narrow definition of historical climate which may be ill- suited for future conditions. We combine state-of-the-art hygrothermal simulation and mold-growth computation with morphed future weather data to analyze 60 prevalent code-compliant walls in three U.S. cities: New York City, Philadelphia and Washington D.C. Our results show an imminent problem in all tested wall types indicating future mold prevalence. The work serves as a framework for considering future hygrothermal risks in building envelopes and demonstrates the widespread need for further work on building resilience.

    The Humid Threshold: Cooling hot, humid climates via membrane dehumidification
    Thesis, Master in Design Studies - Energy and Environment Pamela L. Cabrera Pardo Harvard University, Graduate School of Design, Cambridge, MA, USA

    The thesis centers on the design of a membrane material for cooling hot, humid climates via dehumidification, by selecting water vapor out of humid air. While membrane selectivity is a well-known field of study, found throughout nature and applied across industries, architecture has only regarded membranes as barriers. However, membranes have the potential to separate substances through diffusion, a passive process that is isothermal, and therefore a membrane selectivity system for dehumidification can be less energy intensive than typical vapor compression system used for cooling (Yang, Yuan, Gao, & Guo, 2015) (Woods, 2014) (Mahmud, Mahmood, Simonson, & Besant, 2010). Membrane dehumidification research has been developed over two decades for the enhancement of air mechanical units, but it has not yet been proposed as a building material. This thesis investigates the possibility of using membranes as a building screen material to dehumidify incoming air as it is drawn into a building. This application could lower the latent heat that drives air conditioning demand in humid climates, and thus increase natural ventilation potential and other passive dry-bulb cooling strategies.


    Constructal Law Meets Building Science - Flow Systems Are Everywhere Jun 05, 2020
    Show notes

    It’s not often that you get to have a discussion with someone who has uncovered a fundamental physical law of the universe, but that’s exactly what we got to do in this unmissable episode. In a very entertaining and fascinating departure from our usual discussion of building science, we dive deeply into the concepts underlying Contstructal Law with its discoverer, Professor Adrian Bejan of Duke University. Our conversation ranged from HG TV, to the golden ratio in architecture, to the evolution of Homo sapiens, to fake news, and so much more. Join us as Kristof tries to uncover the mysteries of flow structures that prevent us from creating better buildings and we’ll also learn why a duct system, river, leaf, and lightning bolt are all shaped so similarly. Buckle up and hold on to your hats, folks!


    Stewardship & The Future of Engineering May 29, 2020
    Show notes

    Engineers can fulfill a vital role in their communities through civic activism, proactive engagement in shaping public policy and leading in the civic realm. This segment of the Ideas Institute will explore the future of civic activism and leadership in the public realm for engineers. It is time for the engineering community to contribute to this re-examination in the spirit of technological and environmental stewardship. Increased leadership from the engineering community is needed to help society prepare for future crises.

    Join Kristof in an interview with members of the Engineering Change Lab USA as they explore the future of engineering.


    Passive House Accelerator Apr 03, 2020
    Show notes

    Join Kristof as he interviews Zack Semke and Michael Ingui of Passive House Accelerator on all the great work they’re doing to build community in the building science field.

    Passive House Accelerator

    Mission

    Together we can make a difference! We have seen the power of collaboration.

    The Passive House Community is creative, driven, and Collaborative. Passive House Accelerator has been created to make it easier for others to learn about Passive House, to support the community by allowing them to share ideas and solutions, to continue and expand on the incredible conversations and sessions at conferences, and to allow those who are succeeding in creating beautiful projects and/ or solutions to share their knowledge.

    Passive House Accelerator aggregates the already fantastic content from existing sites while also creating a new platform for people to share new ideas. This site will hopefully always be a work in progress.

    One of the keys to the success of Passive House Accelerator is for you to contribute -

    Create new short or long articles

    Provide a short description and a link to an existing article on your own site

    Share photos and details — lessons learned

    Upload your finished Passive House Projects

    Share an upcoming event on the calendar

    Links to sites, people, projects, features and anything else you feel can accelerate Passive House.

    If you would like to be a contributor please email info@passivehouseaccelerator.com

    Zack Semke (CPHC, LEED AP) is Director of Passive House Accelerator, VP of Marketing with Zola Windows, and owner of Semke Studio, a marketing consultancy for the high performance building industry. Part of Al Gore's Climate Reality Leadership Corps. Zack writes and speaks about the role that buildings can play in accelerating the clean energy transition. He studied human biology, with a focus on human ecology, at Stanford University (BA, ’93). Since then he’s worked as a policy advocate for progressive regional planning, a developer and leader of nonprofit community organizations, a taiko (Japanese drum) musician, and an evangelist for Passive House construction.

    Michael Ingui is a Partner at Baxt Ingui Architects, located in NYC. Baxt Ingui is a highly collaborative architectural design firm that consists of a number of talented architects and teams, most of which are also Certified Passive House Designers. Michael is active in the Passive House community, speaking at many national and international conferences. The team at Baxt Ingui have extended their collaborative efforts by opening their homes during construction to teach architects, tradespeople, homeowners, and developers to integrate better building techniques.


    A House Needs To Breathe... Or Does It? Mar 31, 2020
    Show notes

    Allison Bailes is writing a book! Allison writes the popular Energy Vanguard Blog. With a PhD in physics and thousands of hours spent in attics and crawl spaces, he knows a thing or two about houses. Join Kristof in a discussion with his old friend and colleague as they explore common myths about houses and talk about your next book purchase.

    Dr. Allison Bailes III

    With a background in physics and nearly twenty years of experience in many facets of the residential buildings industry, Allison Bailes has a good handle on what’s wrong with residential buildings and how to fix them. In 2001, he built a high-performance home and launched himself into a new career in the world of building science. Since that time, he has worked as an HVAC designer, home performance contractor, regional manager for a green-building program, and building science trainer. For most of this new career, Dr. Bailes has run his own companies. Energy Vanguard, which he started in 2008, is his current firm.
    At heart, though, Dr. Bailes is a teacher. He taught high school science for three years prior to earning a PhD in physics from the University of Florida and then taught physics for six years at the college level after his graduate education. Since leaving academia, he has focused his teaching on the principles of building science. Through short presentations, workshops, and extended classes, he has helped thousands of people understand how buildings work.
    What Dr. Bailes is most known for is writing the Energy Vanguard Blog, which gets ten thousand page views per day. He also writes regularly for Green Building Advisor and has had articles published in Fine Homebuilding, The Journal of Light Construction, Home Energy Magazine, and other publications. Dr. Bailes is also popular speaker at conferences, presenting keynote speeches, breakout sessions, and extended workshops. In addition, he is a runner, a juggler, and a skier as well as having the honor of being perhaps the only man included in Who’s Who of American Women.

    The Book!

    A House Needs to Breathe...Or Does It?

    “Of course it doesn't. But the people in the house do! That's one of many myths I'll be exploding, along with lots of advice about how to do things right (and sometimes, how not to do them wrong). And with the coronavirus on everyone's mind now, one of the topics I'll be discussing is what's most effective at combating infectious microbes in your home...and what's not.
    My goal with this book is to make it one of the most informative and readable building science books in the world. I want people who live in homes - and that's almost everyone - to know how their homes work and what they can do to be more comfortable, have better indoor air quality, and save money on their energy bills.”
    Here's some of the advance praise I've gotten for the book:

    Dr. Bailes is my favorite writer in building science and HVAC design because of how he simplifies and explains complex topics. This book is sure to be a must read.
    ~ Bryan Orr, Founder of HVAC School and host of their podcast

    I am stoked to share my excitement about the upcoming book, "A House Needs to Breathe." Manufacturers, distributors, trades, and design professionals need to get it right - right now. There's so much bad BS (building science) floating around, it needs to be sanitized before society moves into more bad houses. Dr. Allison Bailes, a designer's designer, will clean house with this one - a recommended must-read!"
    ~ Robert Bean (ret.), ASHRAE Distinguished Lecturer, Mechanical and Building Construction Engineering

    Allison Bailes makes the complex world of building science seem intuitive. He combines the penetrating analysis of a physicist with the flowing narrative of a storyteller. And the story he tells is about what your home can and should be doing to make your life better. You're going to want to read this book!

    ~ Kristof Irwin, P.E., host of the Building Science Podcast

    “If you order this book, you'll get signed copies of the book. If you order at the Six Pack level or higher, you'll also get your name listed in the book. And the top four levels have other bonuses (free consulting, webinar, workshops, or advertising in the Energy Vanguard Blog) included for the same price per book.

    Please go to the campaign page and then click the Pre-order button at the top right to pre-order your copies. And pass the link on to your family, friends, and coworkers.”

    Energy Vanguard Blog

    Southface

    Passive House Austin


    The 5 Principles Of A Healthy Home - Start With A Good Enclosure Mar 24, 2020
    Show notes

    Now, more than ever, there is a tremendous amount of attention on how interconnected we are to our immediate environmental conditions (and to each other). As building science consultants. Our family, friends, colleagues and clients have asked us for years about information that will help them reduce their exposures to pollutants, like viruses, in their homes, offices, and other indoor spaces. So as we began contemplating this episode, we heavily considered talking more about the Novel Coronavirus and how our work can help prevent potentially worse future outbreaks. What we realized in the process is that creating the future we want to see is the only way out of the old paradigm. We have to internalize the fact that buildings can improve health outcomes, both for us as human beings and also for the health of our planet.

    This podcast episode is the first of a five part series exploring what we see to be The 5 Principles Of A Healthy Home. Join Kristof and Miguel as we explore what it means to “start with a good enclosure.”

    The 5 Principles Of A Healthy Home:

    -Start with a good enclosure
    -Minimize indoor emissions
    -Keep it dry
    -Effectively capture particles
    -Ventilate


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