tag:blogger.com,1999:blog-6189296528550638819.comments2023-09-11T14:25:10.869+01:00Passivhaus Refurb - the story of the Totnes PassivhausAdam Dadebyhttp://www.blogger.com/profile/03120182387694751072noreply@blogger.comBlogger32125tag:blogger.com,1999:blog-6189296528550638819.post-10431073130956551952016-08-16T01:02:36.828+01:002016-08-16T01:02:36.828+01:00Hi guys,
Thank you so much for this wonderful art...Hi guys,<br />Thank you so much for this wonderful article really!<br />If someone want to know more about <a href="http://www.empire.sydney/venetian-blinds/" rel="nofollow">Venetuan blinds</a> I think this is the right place for you!<br />Anonymoushttps://www.blogger.com/profile/17532112687067702445noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-75824847728197416142015-10-20T15:59:03.804+01:002015-10-20T15:59:03.804+01:00This comment has been hidden from the blog.general managerhttps://www.blogger.com/profile/16569143375028967046noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-47930952967910299742015-08-05T12:20:15.539+01:002015-08-05T12:20:15.539+01:00Your blog is awesome and really helpful for reader...Your blog is awesome and really helpful for readers. The Eco Refurbishment is a London based environmental construction company.Anonymoushttps://www.blogger.com/profile/05559414654549550138noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-36269343379779503022015-07-07T11:26:00.514+01:002015-07-07T11:26:00.514+01:00Your blog is awesome and really helpful for reader...Your blog is awesome and really helpful for readers. The Eco Refurbishment is a London based environmental construction company.Anonymoushttps://www.blogger.com/profile/05559414654549550138noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-58251472957945797132015-04-04T08:27:13.292+01:002015-04-04T08:27:13.292+01:00Your blog is awesome and really helpful for reader...Your blog is awesome and really helpful for readers. The Eco Refurbishment is a Sustainable builders London based environmental construction company.Anonymoushttps://www.blogger.com/profile/05559414654549550138noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-60255169334378596002014-08-22T09:25:04.479+01:002014-08-22T09:25:04.479+01:00This comment has been removed by a blog administrator.Anonymoushttps://www.blogger.com/profile/00540941533850166224noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-63649167521481736032013-07-17T23:55:56.489+01:002013-07-17T23:55:56.489+01:00The recent hot weather has got me thinking about s...The recent hot weather has got me thinking about solar shading again for our refurb project and I remembered about your Internorm windows and wondered how you are finding them now it's hot?Willhttps://www.blogger.com/profile/00489834441012862619noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-16723007535370881222013-02-14T12:04:06.182+00:002013-02-14T12:04:06.182+00:00Thanks! :)Thanks! :)Adam Dadebyhttps://www.blogger.com/profile/03120182387694751072noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-59034701445882479032013-02-12T21:03:03.595+00:002013-02-12T21:03:03.595+00:00Adam, that's super helpful, thank you very muc...Adam, that's super helpful, thank you very much. As further thanks, I will make sure I leave a very positive review of your book on Amazon!Willhttps://www.blogger.com/profile/00489834441012862619noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-40413123010298139132013-02-11T12:43:10.005+00:002013-02-11T12:43:10.005+00:00Thanks for your comments Will. Yes, I think you ar...Thanks for your comments Will. Yes, I think you are right. I will do an update. There is a chapter in the book on Living in a Passivhaus, however I think that this is an area that needs more systematic study here in the UK, the information in our book is limited; however, we do have a section on living in the Totnes Passivhaus. <br />Briefly, re the windows, I think that Internorm do offer automation options. The blinds don't move in the wind and do seem to provide effective shading, not that we have had much/any significantly hot weather since we moved in! The blinds do not completely darken the room but they make a big difference – no need for heavy lined curtains. The main problems with windows of this type with integral blinds is that they require more cleaning – there are four glazed surfaces to clean rather than two. Also, our windows tend to collect flies in the autumn, although I understand that Internorm are addressing this issue – they haven’t approached me yet. The other problem is that the U-value of these windows (0.93 with the blinds open) is not quite good enough for Passivhaus; they consist of a double glazed unit with a vented tertiary pane, rather than a sealed tripled glazed unit. We were only able to use them because our local climate is warm enough (just). In most parts of the UK, we would have had to use higher performance windows to meet the Passivhaus standard. Internorm do offer a 3 + 1 version of the window, with a triple glazed unit with narrow spacers and a fourth pane containing the blinds, however, in my opinion, this is not a very satisfactory solution because the triple glazed component uses krypton (see the book for an explanation about the issues with krypton and xenon) rather than argon and because, having a total of four panes of glass means that the g-value of the window will be lower than is ideal. The windows will also be very heavy! And expensive!<br />I hope that helps. <br />Adam Dadebyhttps://www.blogger.com/profile/03120182387694751072noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-57685905852571000192013-02-11T00:21:27.228+00:002013-02-11T00:21:27.228+00:00Thank you for doing this blog and more importantly...Thank you for doing this blog and more importantly your book, which I've bought a copy of as well as getting my local library to stock it.<br /><br />It would be great to have another blog update on life in your house, when you have time.<br /><br />Also, there is very little information about I-Tech shading on the internet and I'd love to know how you have found it. Particularly issues like the solar powering of it and how much light is transmitted when they are closed. Do the blinds rattle at all in strong winds? <br /><br />Also, the control mechanism interests me, as I'm contemplating whether it could be integrated into a home automation system, so they could be opened automatically in the morning, closed at night or when the temperature reaches X degrees.<br /><br />Internorm have next to nothing on their website about it sadly. Maybe I'll just have to try and buy one small window from somewhere to play with before putting in an order!Willhttps://www.blogger.com/profile/00489834441012862619noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-53548777476623851652013-01-16T11:19:30.090+00:002013-01-16T11:19:30.090+00:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/13980504827526140432noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-11275239742744687972012-10-28T21:00:34.115+00:002012-10-28T21:00:34.115+00:00Thanks for answering Adam. I will sure take a look...Thanks for answering Adam. I will sure take a look at the handbook. About your remark that some water will get outside, I would think it will condensate on the wall surrounding the joist end since stone will be more cold than wood. Also, the same situation is with an insulated roof: some water will get through and condensate but it doesn't necessitate taking special measures to prevent the wood in the roof construction from rotting.Koenhttps://www.blogger.com/profile/10068485367164652910noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-61894334393739223102012-10-23T14:24:11.333+01:002012-10-23T14:24:11.333+01:00The wall is airtight on the inside, not hermetical...The wall is airtight on the inside, not hermetically sealed like a submarine, but nevertheless much more airtight than in a conventional build. This is a crucial difference. Even in constructions with Passivhaus levels of airtightness, they are not hermetically sealed from the outside world and vapour pressure will push some water vapour from inside to outside during winter. In a retrofit with internal insulation, the joist ends will be signficantly colder than they were before the insulation was installed. This is topic which is discussed in more detail in The Passivhaus Handbook, published this week.Adam Dadebyhttps://www.blogger.com/profile/03120182387694751072noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-80884564453349083372012-10-21T13:33:49.943+01:002012-10-21T13:33:49.943+01:00If the wall is isolated on the inside and airtight...If the wall is isolated on the inside and airtight, isn't the joist end safe from problems since there can be no hot air flowing through the wall and condensate on the cold end?Koenhttps://www.blogger.com/profile/10068485367164652910noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-70126451522869366122012-08-16T22:58:04.611+01:002012-08-16T22:58:04.611+01:00Thanks for your comments and encouragement. I'...Thanks for your comments and encouragement. I've written a short section in our new book, the Passivhaus Handbook (out in the autumn) about life in the Totnes Passivhaus. I will do a post with this excerpt from the book.Adam Dadebyhttps://www.blogger.com/profile/03120182387694751072noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-35694301155210633202012-08-16T21:10:25.151+01:002012-08-16T21:10:25.151+01:00Keep blogging! How was the winter?Keep blogging! How was the winter?Anonymoushttps://www.blogger.com/profile/00581012819685290129noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-52597662621477698582012-05-21T10:33:27.051+01:002012-05-21T10:33:27.051+01:00Hi DeLy,
In Passivhaus, the electrical efficiency...Hi DeLy,<br /><br />In Passivhaus, the electrical efficiency of a MVHR (or the MVHR function of a "compact unit") is measured in terms of the amount of energy needed to move a volume of air through the unit. This is measured in watt hours (of electricity) consumed per cubic metre of air moved: Wh/m³.<br /><br />According to the Passivhaus Institut certificate, the Paul Novus 300 unit has an electrical efficiency of 0.24Wh/m³. The Nilan Compact P is from 0.40Wh/m³.<br /><br />Once in situ, the "real world" performance will depend greatly on how well the ducting has been designed and how well the units have been set up. Where a unit doesn't have automatic balancing (between incoming and outgoing air), the unit could be performing below its optimum headline electrical efficiency measure.<br /><br />There are of course many criteria for choosing a MVHR or compact unit. Compact units are ideal where space is at a premium - typically they only have a floor footprint equivalent to that of a large fridge/freezer. However, as a unit that combines MVHR with domestic hot water storage, as with some other multifunctional devices there may sometimes have to be some compromises in performance compared with what individual, dedicated devices would deliver. Sometimes though combining devices can bring efficiencies. Compact units are evolving and I would expect that, as they develop, and as Passivhaus becomes more and more mainstream, they will compete well on efficiency with non-compact unit counterparts.Adam Dadebyhttps://www.blogger.com/profile/03120182387694751072noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-59557086156885417972012-05-20T00:26:05.811+01:002012-05-20T00:26:05.811+01:00Hi, as somebody currently trying to decide between...Hi, as somebody currently trying to decide between a Paul MHRV (+heat pump for DHW) and a Nilan Compact P, I'm interested in your statement " Our MVHR unit is almost twice as electrically efficient as the Nilan Compact P." Can you expand on this a little further as the Nilan unit seems very efficient for the jobs that it does. Thanks.DeLyhttps://www.blogger.com/profile/01042527878339995638noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-48127614077370370372012-03-06T05:28:02.766+00:002012-03-06T05:28:02.766+00:00Congratulations on your PassivHaus certification A...Congratulations on your PassivHaus certification Adam!! What a wonderful achievement. And for the blog documenting the process. All the best, Sylvia JuzwaSylviahttps://www.blogger.com/profile/17869525355906121252noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-49450778781990197542012-02-23T15:13:01.263+00:002012-02-23T15:13:01.263+00:00austria fm radio onlineThanks for share of nice in...<a href="http://www.austria.listenradios.com/" rel="nofollow">austria fm radio online</a>Thanks for share of nice information about this.i never seen such type of informationTehseen hasan bajwahttps://www.blogger.com/profile/10388471762982097344noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-36490009967962724892011-08-02T10:21:09.921+01:002011-08-02T10:21:09.921+01:00Congratulations, excellent result!Congratulations, excellent result!Elrond Burrellhttps://www.blogger.com/profile/14465911868988914854noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-63154469668793616292011-03-07T14:04:23.498+00:002011-03-07T14:04:23.498+00:00The passivhaus standard is in my opinion now evolu...The passivhaus standard is in my opinion now evolution from previous regulatory standards, and uses principles seen in BREEAM and the Code for Sustainable Homes, to produce an efficient low carbon building.<br /><br />See article http://www.energy-measures.com/passivhaus/joeknighthttps://www.blogger.com/profile/04653103514774030358noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-82484546806448465682011-01-27T17:14:02.207+00:002011-01-27T17:14:02.207+00:00Thanks. Yes, the proof will be in the blower door ...Thanks. Yes, the proof will be in the blower door test pudding, as they say!<br /><br />One thing I didn't mention is that we had considered leaving a ring of incomplete floor boarding around the edge of the building, in case the airtightness test reveals a problem with one of the joist ends. Unfortunately, it wasn't practical as we needed to press on with the stud walls on the next floor. We will still be able to access the joists from below.<br /><br />I'll make sure I post an update when we do the blower door test.Adam Dadebyhttps://www.blogger.com/profile/03120182387694751072noreply@blogger.comtag:blogger.com,1999:blog-6189296528550638819.post-91433088912480034242011-01-27T16:47:54.259+00:002011-01-27T16:47:54.259+00:00Fantastic workmanship - hope the airtightness test...Fantastic workmanship - hope the airtightness testing reflects the efforts put in!Unknownhttps://www.blogger.com/profile/12720267800980755091noreply@blogger.com