tag:blogger.com,1999:blog-4900692238611046799.post7229923450818276587..comments2023-06-04T14:30:47.595+01:00Comments on Passive House Design: Effect of Window Size on Energy Consumptionssirr_passivehttp://www.blogger.com/profile/03132263525858503137noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-4900692238611046799.post-20095545006362112872015-10-16T16:07:06.018+01:002015-10-16T16:07:06.018+01:00Thanks for sharing about passive house,
Fenster ka...Thanks for sharing about passive house,<br /><a href="http://www.sh-passivhaus.de/fenster-fuer-passivhaus-teil-2" rel="nofollow">Fenster kaufen</a>general managerhttps://www.blogger.com/profile/16569143375028967046noreply@blogger.comtag:blogger.com,1999:blog-4900692238611046799.post-18989656749363258032011-05-11T10:16:30.335+01:002011-05-11T10:16:30.335+01:00Hi Derek, I think the principle findings of the st...Hi Derek, I think the principle findings of the study were that a passive house may not require as much sun orientated glazing to generate heat gains in cold climates as previously thought. They found no significant increase in heating demand by orientating the house 180 degrees and having the majority of windows facing north. This seems to be saying that with good thermal insulation and airtightness along with optimal internal layout the heating demand can be met with less solar gains. THerefore the risk of overheating in summer can be minimised by reducing window size slightly and avoiding extra costs of expensive shading and airconditioning. In terms of geographical location the study is applicable to countries above 60 degrees latitude (which is roughly above Scotland). However, generally speaking, the further South you are the higher the solar irradiance on the building and hence the greater the risk of overheating so you could say this study is more applicable. Although bear in mind that passive design in countries like spain for example look to providing north facing windows with minimal south facing windows as normal practice as their problem is cooling demand rather than heating demand. Therefore you could say that countries in mid Europe need to strike a balance between north and south orientation. Also PHPP accounts for geographical location, window size and orientation when calculating solar gain. However this study may be asking questions of the accuracy of the calculations for all locations.ssirr_passivehttps://www.blogger.com/profile/03132263525858503137noreply@blogger.comtag:blogger.com,1999:blog-4900692238611046799.post-20340386114058971872011-05-10T12:16:27.003+01:002011-05-10T12:16:27.003+01:00HI Sean,
Great blog! I think the results from th...HI Sean, <br /><br />Great blog! I think the results from that study highlight the problem of large windows facilitating possible overheating in summer months. This can obviously be detrimental to the Passive certification of the house, as the Passive House Institute clearly outlines that in warmer climates and/or during summer months, excessive temperatures may not occur more than 10 % of the time. The windows are clearly doing what they were intended to do, but for the sake of comfort, a balance must be achieved. However, do you think the geographical location of the study had would limit its relevance to others countries, for example Ireland?PassiveDOBhttps://www.blogger.com/profile/15533955204080076909noreply@blogger.com