Seven Steps to Fast-Track Affordable nearly Zero Energy Buildings
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- Опубликовано: 15 июл 2024
- The nearly zero energy building standard, or nZEB, will become mandatory across the entire EU from 2018 for new public-owned-and-occupied buildings and for all other new buildings from 2020. It will require a significant improvement in the energy performance of buildings from current standards, with a strong focus on building envelope, mechanical systems and renewable energy generation.
This documentary is hosted by Tomás O'Leary, Director of nZEBRA - a consulting and training firm specialising in cost-effective nZEB solutions. Tomás takes you through the 7 key steps required to meet nZEB, using a real-life case study housing scheme in Wexford, Ireland.
This behind the scenes documentary provides a rare opportunity to follow a project right through from foundations to solar PV panels and features lots of innovative products and design strategies that will soon become common-place on building sites as we rapidly advance towards nZEB.
Very good, comprehensive and easy-to-understand guide through an nZEB introduction!
Fantastic video, well structured and delivered with personality
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Great video, well done.
What a great video, the most concise and complete visual and spoken explanation love see. Thanks for your work in making this video and helping the next generations.
that's a great video !!
Shmuck
In the US, for electrical, how do the horizontal furring strips work with the code? With wiring running down wouldn’t you need metal straps at each strip? Stapling down wiring?
good stuff, but the perimeter walls & roof as ICF would be far better in speed/value/efficiency/longevity... also not nearly as reliant on skill/care/time of tradesmen.
The U values seemed strangely high to me. This video suggests that a U value of .16 is adequate for a wall for an NZEB. Assuming that the wall insulation is the primary factor in determining the U value of the wall a U value of .16 corresponds to only an R value of 6.25. Much less than even the CA code required insulation R19 for a wall made with 2 x 6's in CA for a standard new house. Caveat: I'm not an expert and it is likely that there is something here I don't understand.
Don't confuse imperial and metric units. If CA code requires 19 Hours x square feet x deg. Farenheit / British Thermal Unit, that's an RSI value of 3.35 Square metres (not meters) x deg. Celcius / Watt. The conversion factor is about 5.68. I wonder when American builders will inch their way to metrication like their engineering and scientific colleagues or will this issue get political? I can't see Irish folk warming to British thermal units anyway...
@@joemurray1 Thank you. I was an electrical engineer and almost everything in that world is metric (until you talk to a mechanical engineer who mostly think in mils (.001 inch)) and I had just assumed that R value was some kind of metric based constant. It is annoying how resistant the US was to adopting metric. Massive amounts of money have been wasted on the use of non metric screws in the US. When fine threads were introduced metric screws were already a thing and metric screws were a nice compromise between coarse and fine threads. But massive NIH got in the way and there are now three different thread standards commonly used in the US. Something that results in thousands of guys cursing every day when they realize they've gotten home from the hardware store with the wrong screws. In one company I worked for we paid for our metric screws to be dyed blue because people were afraid they'd get them mixed up with non metric screws.
It's such a shame that this effort is undermined by biking a massive sprawl that consumes farmland and requires daily commuting by car!
So, if I decide to drill holes in the outer facing inner walls to put up some shelves or a big ass painting, I just ruined the air seal and thus the entire house? What?
Not true. He addresses this at 7:15 in the video.
What is the make and model of the magic box?
I think its a brand called NILAN, item called Compact P - With Air Source Heat Pump. that's all i could find but no pricing yet.
@@WSMotors1 I could find the product online now~ I will figure out details. Thanks a lot!
Very good video. I have a couple of points: first of all I can’t have an open fire. The chimney would be a huge gaping hole in the envelope, and even with an air supply direct to the fire the whole integrity of the system is nullified. Following on from that, if there is a power cut, as there always might and will be, there is no air circulation and windows would need to be opened, still without a heat source. This house is totally dependent on a reliable electricity source and we can rely on that less and less. I have some underfloor heating in my old house, which is lovely, and I use a relatively large amount of gas, but, if the gas and power fails for any reason I still have heat. This is a huge comfort. I don’t trust the government or the power suppliers I’m afraid and photo-voltaic panels don’t work in long winters. Lastly, this depends on skilled, responsible and careful tradesmen. Good luck with that one. But a brilliantly informative video, thanks.
There are solar panels on the roof that may handle a power outage. In my opinion we all need to have our power plant on our homes or in the backyard.
Put the insulation on the inside of the roof not on top of the second floor ceiling, complete loss of a large storage space !! Have always thought this is a moronic way of doing things in the UK & Ireland.
Well said, here in the states, the deal now is to always condition the entire envelope, from the ground to the roof ridge on top :--)))))