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PODCAST

The Building Science Podcast

Positive Energy

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.

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All Episodes

1:05:02

Green Glop & Hair Shirts - Perspectives on Client...

The Building Science Podcast ·

2023/11/27

Designing and building a sustainable passive house is a powerful moment for all involved - the client, the architect, and the planet. For the owners the process is deeply personal and emotional, with layers of financial impacts and the significant time investment involved. For architects the key is to talk in a way that clients can hear them, and listen in a way that they can hear their clients*. For both the architect and the client the first few conversations set the stage for what comes next.Join

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1:19:59

An Architectural Optimist Wrote a Book Part 2 -...

The Building Science Podcast ·

2023/11/21

Stated another way: Why is it that some firms produce a consistent stream of high-performing buildings, while others have trouble crafting a single project that moves beyond traditional practice? The answer is Practice; the environment and practices within which each particular firm carries out or exercises its professional role in the society. Join us in this episode as Corey and Kristof enjoy a thoughtful and lively discussion of architectural practice along the dimensions of Vision, Culture,

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00:54:44

Filter Feast Part 2

The Building Science Podcast ·

2023/11/07

Topics include the basics of particulate capture, the tradeoffs between filtration efficiency, clean air delivery rate, and energy use, filter media types, and electret degradation. If you want to learn about the role of filtration in delivering clean indoor air for your self, or if your role in society has agency in making sure your clients are breathing healthy air, you will appreciate what you learn here. Mark is a filter nerd with the ability to break things down and communicate clearly.

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00:54:44

Filter Feast Part 1

The Building Science Podcast ·

2023/10/18

Topics include the basics of particulate capture, the tradeoffs between filtration efficiency, clean air delivery rate, and energy use, filter media types, and electret degradation. If you want to learn about the role of filtration in delivering clean indoor air for your self, or if your role in society has agency in making sure your clients are breathing healthy air, you will appreciate what you learn here. Mark is a filter nerd with the ability to break things down and communicate clearly.

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1:14:39

The “Roaring 20s” for IAQ

The Building Science Podcast ·

2023/09/26

The 2020’s have so far been a decade of abundance and progress for society’s awareness and understanding of Indoor Air Quality (IAQ). Beyond and before the pandemic put IAQ on everyone's mind, researchers have been enjoying well funded support from various organizations, both public and private, to better understand the impacts of indoor air on our health and well being. Plus cutting edge technologies from novel mass spectrometers to real-time PCR and next-generation DNA sequencing are both

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1:06:56

An Architectural Optimist Wrote a Book

The Building Science Podcast ·

2023/09/11

There are few roles in society with the broad and lasting power of Architecture. Architecture both reflects and directs the story of a civilization and its cultural milieu by signaling what’s important, who has value, and how society functions. Recognition of the power of architecture in society sets the stage for today’s discussion with Corey Squire, a skilled sustainability consultant, a member of the AIA’s COTE Advisory Group, and an architectural optimist if there ever was one. Join us in this

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00:53:08

Making Quality Homes A(a)ffordable?

The Building Science Podcast ·

2023/08/25

In a Seattle neighborhood, close to public transportation, Dan Whitmore and his associates are putting the money where their ideals are and making affordable housing happen. Not just affordable but high-performance Passive House affordable per the Phius standards, plus they have an onsite PV array that unlocks the benefits of onsite power generation. This episode is an interview with Dan as he unpacks the topic and asks Why is this compelling social issue considered to be only one that can be

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01:18:18

The Future of Homes

The Building Science Podcast ·

2023/08/17

Today we are going to dig into The Future of Homes with two home builders intent on delivering that future in the present. How do we make truly healthy, exceptionally durable homes that also respect the environment, the new normal?What are we doing in residential construction today that we’ll look back on and say “Remember when we used to do that?” Conversely, what are we doing that is “new” and unconventional today but will come to be a widespread, mainstream practice? These are the opening topics

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01:15:29

Hempcrete Homes: A Growing Industry

The Building Science Podcast ·

2023/08/09

Why is the AEC industry still mostly ignoring hempcrete? There are a host of good reasons to use this renewable and low environmental impact material in homes and buildings - including indoor air quality, acoustics, thermal comfort, and energy performance - yet the mainstream market is still largely uninformed and continues to deliver today’s houses with yesterday's material palettes. With industrial hemp coming online fueled by new legislation, favorable economics and strong market potential - amid

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1:08:10

Architectural Solar: A New Normal

The Building Science Podcast ·

2023/08/02

The best place to generate electrical power is where it’s used. We all know that solar PV adds value for both owners and society by improving resilience, reducing energy costs and decreasing carbon emissions and climate impact. Yet traditional design practices and compressed schedules make it challenging for project teams to include integrated solar on their designs.The solution is Architectural Solar and the Architectural Solar Association knows that the key moves are early engagement and

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01:22:24

Build. Not too much. Mostly with plants.

The Building Science Podcast ·

2023/07/19

There has never been a better time or opportunity to completely rethink the way we approach the practice of architecture and construction. With climate change looming over us, becoming more visible by the day, a critical look at the materials we use and their impacts on emissions is needed. Enter natural building materials. Which ones are legit? How can we use them? Join Kristof as he interviews architect and builder, Greg Esparza, with a sweeping introduction to mass timber construction, as well as

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01:28:53

Building Science Journalism

The Building Science Podcast ·

2023/07/12

We live in the information age. The quality of the information we receive determines the quality of our decisions and the effectiveness of our actions. It is also no secret that money holds influence, and the methods through which we obtain information, as well as the economic dynamics of the building science and construction industry, are undergoing constant change.We invite you to join us in exploring the significance of Building Science Journalism in today's world. Our conversation features two

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00:56:13

Low Carbon Buildings - What’s Next? Wow. Just Wow

The Building Science Podcast ·

2023/07/05

You’re in for a feast of ideas here. Join us as Kristof talks with Bruce King about his work as a stubborn optimist and powerful motive force in the realm of low carbon buildings. Bruce joins a wise heart with a clever mind and a deep understanding of the technical aspects and implications of the role of energy and carbon in how we, as a society, deliver buildings to ourselves.Today’s interview discusses themes from Bruce’s new-at-the-time book Build Beyond Zero written along with friend and

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00:20:44

Direct DC-to-LED Lighting (Bonus Short Episode)

The Building Science Podcast ·

2023/06/30

Producer’s note: after a regrettably long COVID-19 disruption, this fun bonus short episode (recorded live in 2018) finally gets to see the light of dayAre you open to rethinking how you provide lighting to your home? What if there were a lighting system that not only saves you time, money and energy, but also enhances your experience of the living space?I think we all already know that running 120V AC around a home to power DC LEDs leads to a lot of warm AC-to-DC transformers and wasted energy. We

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01:13:53

An Introduction to Embodied Carbon & Buildings

The Building Science Podcast ·

2023/06/28

Is a building more like a river or a rock? A building seems to just sit there*, so in that sense it seems to be more like a rock. But in reality every building material, and thus the entire building itself, is a snapshot in time of a river of resources and energy flowing from natural ecosystems into our use, and then, ultimately flowing back into the environmentAll along the way, this flow of energy and resources emits carbon and other molecules into the sky, changing atmospheric chemistry and

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01:20:04

Do you like it hot? Do you want it now? Do you want...

The Building Science Podcast ·

2023/06/21

Gary Klein is in hot water and that’s a good thing. Hot water is the often-overlooked aspect of energy use in our homes and buildings and that makes zero sense. Energy for water heating is either the second largest, or in some cases the largest single energy use and does not get enough attention.As if that were not motivation enough, hot water is also the place where convenience and energy savings align perfectly because no one wants to wait for hot water and no one (arguably) wants to needlessly

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01:02:30

Building Passion For Passive

The Building Science Podcast ·

2022/11/04

Knowing how to build fantastic high performing buildings is not enough; we need to cause that to actually happen. We need high performance buildings to exist. Knowing how is necessary, but also clearly not sufficient. During this time of increasing urgency to realize new performance outcomes, we need new skills in order to fulfill our roles in society as architects, engineers, builders and trades. What this means is that we need to think about what actually works and then do a lot of that right now

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01:05:11

Proving Passive House Is Practical, Possible, &...

The Building Science Podcast ·

2022/09/26

Join Kristof as he interviews architect and Passive House nerd, Trey Farmer, in a wide ranging discussion about remodeling his personal residence. The ambitious project was an endeavor to prove to the Austin architecture and construction community that beautiful, well designed single family passive houses were not only possible in the market, but also quite practical and able to be built without breaking the bank or special products. Trey’s emphasis on community and his own business endeavors all

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00:58:44

The Business of Building Science

The Building Science Podcast ·

2022/01/12

Happy New Year! Welcome back to the 8th season of our little show. We can hardly believe it. In this episode, we ask the question “what is it actually like to run a business that focuses on building science?” Turns out, we know something about that. Join Kristof and Miguel in a discussion about the challenges, joys, and future of business model innovation as building scientists and entrepreneurs. You can learn more about our Performance Consulting and Residential MEP services on our company website

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01:12:21

Energy With Memory

The Building Science Podcast ·

2021/11/09

The famous astronomer and educator Carl Sagan once said, “If you wish to make an apple pie from scratch you must first invent the universe.” What Sagan was pointing at is the fact that for us to really do anything from scratch, we have to understand the system in which we exist.The planet and all its inhabitants exists as a massive, complex system of interconnected systems that we don’t always see. For example, the COVID-19 pandemic has clearly shown us that public health is part of a global web,

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159 results

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