Padraic Prendergast

4th Year Architectural Technology student @DSA_TUDublin. Academic account for my final year thesis based on sustainable materials in Passivhaus for embodied C0²

[Padraic Prendergast @padraicprender2]

Passivhaus is an energy efficient standard. Passivhaus reduces space heating demand significantly and therefor improves operational carbon expenditure. To achieve this performance for a buildings lifetime we have to emit greater amounts of embodied carbon immediately.

[Ecological Building Systems @ecologicalbuild]

Last chance to secure a place at tomorrow's #nZEB seminar. We are thrilled with the interest and turnout we have received so far - the future is green💚#construction #sustainability
https://t.co/5HHPopXJmB

[Padraic Prendergast @padraicprender2]

This is the current strategy for nZEB or Passivhaus compliance. We have no obligation to minimize the quantity of carbon emitted before a building is commissioned.

[Jane Anderson @constructionlca]

We need to get moving. At current levels of global emissions, we've only got 7 years before we have completely spent our carbon budget to stay below 1.5 degrees of global warming with 66% probablility.

[Padraic Prendergast @padraicprender2]

@WoolleyMick Hi Mick, good question.
I am comparing nZEB and passivhaus with the same build type that allows comparison at a macro stage.

[Padraic Prendergast @padraicprender2]

Passivhaus is an energy efficient standard. Passivhaus reduces space heating demand significantly and therefor improves operational carbon expenditure. To achieve this performance for a buildings lifetime we have to emit greater amounts of embodied carbon immediately.

[Mark Siddall @MarkSiddallRIBA]

INTERNATIONAL #PASSIVHAUS OWNERS CHALLENGE 
From Friday 19th Feb 2020, are you willing to turn off your space heating for 7-days (or until it gets "too cold") and each day let others know about the experience on social media?

RT to invite participants

#PassivhausChallenge 1/4

[Padraic Prendergast @padraicprender2]

nZEB in comparison, does not require the higher performing materials therefore has a lower embodied carbon. nZEB spends increased carbon amounts through the operation of the building, due to less demand on energy reduction. In your opinion, which has a bigger carbon footprint?

[Padraic Prendergast @padraicprender2]

(5/5) Feedback is welcomed, thanks. @WolfgangFeist @the_woodlouse @IrishDeclare @AECBnet @constructionlca @TimMartelAT @architectmark @AnnMarieFallon_ @IrishGBC @MarkSiddallRIBA @the_iPHA

[Padraic Prendergast @padraicprender2]

(1/5) From my research thus far, my understanding is, as the #Passivhaus standard has sufficiently dealt with operational carbon, it could become the most suitable energy standard for reducing carbon #emissions in construction if an #embodiedcarbon metric is applied.

[Padraic Prendergast @padraicprender2]

(4/4) To what extent will the construction industry choose less C0² obtrusive materials if other factors eg. price and availability are not also in their favour? Should there be a threshold applied that a project must comply with? I appreciate I am engaging with the converted.

[Padraic Prendergast @padraicprender2]

@BeattiePassive Excellent insight into factory conditions. Where do you get all of the certified passivhaus components from?

[Padraic Prendergast @padraicprender2]

(2/2) b) A broad analytical framework has the ability to cover all materials. c) Measuring material suitability will accurately determine the most suitable and justify selection. d) Environmental impact must become a crucial factor as more damage is done to the atmosphere

[Padraic Prendergast @padraicprender2]

(1/2) The article below is an insightful piece on construction materials by Quang Truong on archpaper from June 2020. The takeaways for me were a) Material selection in the industry is and should be very complex due to many contributing factors. https://t.co/jLdmijpf6F

[Padraic Prendergast @padraicprender2]

With UK movements such as @archdeclare and RIBA's https://t.co/kKOzNABKss, Is there a need for something similar for designers and specifiers in Ireland? Could there be a legal embodied energy metric introduced to construction?

[Padraic Prendergast @padraicprender2]

Great virtual Passivhaus workshop organised by @PassivhausTrust. In particular, the webinar by @annacarton from @passivhausstore on operational and embodied carbon was very interesting. A great quote from the webinar; "you are building a carbon legacy, whether you like it or not"

[Padraic Prendergast @padraicprender2]

Has there been any research to show that a building can achieve Passivhaus targets using more sustainable materials with low embodied energy? Using components or materials that are not necessarily on PHI database. @WolfgangFeist @ecologicalbuild @AnnMarieFallon_ #sustainability

[Padraic Prendergast @padraicprender2]

Very interesting to see the studio being literally 'rolled out'. Is testing carried out in factory settings to achieve PH certification I wonder?

[Ron Beattie @BeattiePassive]

Excited to see our first completed Haus4studio units rolling out of the factory, now on their way to their new home @cardiffcouncil #passivhaus