Tag: integrated design

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This is a Passivhaus Basics blog post that gives an overview of a specific aspect of the Passivhaus Standard.

Windows, doors, rooflights, curtain walling and any other glazed elements often lose (or gain) significantly more heat than the surrounding walls or roof of the thermal envelope. For this reason, the international Passivhaus Standard pays particularly close attention to the design and specification of glazed elements.

This blog post looks at Passivhaus Windows as these are usually the main glazed element of a Passivhaus building. Other glazed elements can be considered along similar lines.

Reducing heat loss conserves energy, but it’s not just about energy efficiency. Reducing heat loss is also about providing optimum comfort for the people using the building. This is, after all, what the international Passivhaus Standard is all about: providing exceptional comfort whilst being radically energy efficient.

The international Passivhaus Standard also provides healthy living environments. Passivhaus buildings have plentiful clean fresh air and are free from mould. And the rigorous quality assurance of the standard results in highly durable buildings.

Passivhaus Windows have an important role in all of these aspects: Energy Efficiency, Comfort, Health and Durability.

What is a Passivhaus Window?
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This blog post is a review of “Hermann Kaufmann IZM: Illwerke Zentrum Montafon” published in April 2015, edited by Marko Sauer.

This is a beautiful book about a beautiful building. The IZM is a new 120m long, five-storey office building in the Montafon valley of the Vorarlberg region in Austria. It brings together, in a central location, both the civil and electrical engineers of the hydropower generation company, Illwerke Vorarlberg.

The Illwerke Zentrum Montafon (IZM) in Rodund is an unparalleled timber structure: with a usable floor area of over 10,000 m2, it was the largest office building made of wood in Central Europe on completion. Assembled in only six weeks, the timber construction above the concrete base is the first application of the LifeCycle Tower (LCT) system on the free market.

The building is an exemplar of integrated architecture. The alpine setting, materials research, modern technology, prefabrication, traditional craftsmanship, low energy / low carbon design, and social contribution all play their part in making the IZM a work of stunning Passivhaus architecture.

“Hermann Kaufmann IZM: Illwerke Zentrum Montafon” is an elegantly restrained monograph of essays, beautiful photographs and clear drawings. It is, in a sense, reflective of the building itself. It maintains the very high standard of presentation and technical detail that can be found in all Detail magazines and books.

Passivhaus architecture is integrated architecture. This book details an exceptionally beautiful work of integrated architecture.

031 Exceptional Integrated Architecture

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Bjarke Ingels is a “Starchitect,” an international superstar architect. He is also a great storyteller and perhaps this is why he has risen to such prominence in recent years. People love stories.

Arguably, it is the narrative that people give to buildings that elevate them to “Architecture.” The trouble I have with most “Starchitecture” is that the narrative often appears to be whimsical, egocentric and divorced from environmental context.

Bjarke Ingels is a different kind of “Starchitect.” He offers a narrative where architecture embraces environmental context. His term for this is “Vernacular 2.0.”

Vernacular architecture arises out of a direct response to the climate it inhabits and the resources available locally. And this is exactly what the Passivhaus Standard aims to ensure in a contemporary context.

So what would happen if the two were combined? Can you imagine an architecture where the “Hedonistic Sustainability” of the Bjarke Ingels Group (BIG) delivered the radical energy efficiency and exceptional comfort of the Passivhaus Standard?*

I can.

The combination of Bjarke Ingels + Passivhaus, to my mind, truly would be a “Vernacular 2.0.”

025 Bjarke Ingels Passivhaus Vernacular
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The Passivhaus Standard delivers radically energy efficient buildings with excellent occupant comfort. I have written about the comfort aspects of passivhaus before in the Gary Vaynerchuk inspired post and in one of the LovePH series.

Heating is a key element of occupant comfort. So why does the Passivhaus Standard have a limiting benchmark for heating energy of 15kWh/m2 per annum? Isn’t this contradictory?

While this may seem contradictory, there are good reasons for it. Firstly, heating makes up a significant proportion of energy consumption in buildings, so it needs to be addressed to improve energy efficiency and reduce climate change impact. Secondly, setting a very low heating energy benchmark drives a fabric first approach, which has several benefits, comfort being a key one. And thirdly, having a heating energy benchmark singled out from primary energy means it can’t be achieved by offsetting with renewables or any other energy accounting cheats.

15kWh/m2 for comfort – delivered with radical energy efficiency, fabric first design and no cheating!

022 Passivhaus Less Heating More Comfort
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Perhaps you’ve heard the oft-cited African proverb: “It takes a village to raise a child.” Passivhaus is similar; it takes a whole team to successfully deliver a passivhaus project. The Passivhaus Standard requires an integrated approach to design so everyone on the team needs to be involved and to play their part.

Structural engineers need to design structure integrated with, not compromising, the thermal envelope. Building services engineers need to design the building as a whole system not as discrete items of equipment added to a building. Architects need to be aware of building services and structure and how they integrate as elements of the architecture. The passivhaus designer needs to be aware of the building shape, form, structure, services, physics and more. And the list goes on; the team of professionals working closely together on an individual passivhaus project can be quite extensive.

And looking beyond individual projects, passivhaus professionals share many common interests and goals. They want to deliver buildings that live up to their promises. They want to help tackle climate change. And more often than not, they want to work together and help each other succeed. Whether it is on specific projects, at conferences, or on social media, passivhaus professionals are very active in honestly sharing mistakes, lessons learnt, best practice and latest developments. There is a very strong global passivhaus community.

Community is a reason to Love Passivhaus!

021 Love Passivhaus Community
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