Josephine 
Member since Nov 22, 2010


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Re: “Is the new deal on the convention centre good for the city?

A bad deal for the city and a bad deal for all Nova Scotians.

Posted by Josephine on 12/21/2010 at 4:38 PM

Re: “Can Halifax be Canada's "Solar city"?

Its a good initiative. But we need to go further. Though Halifax doesn't have the best conditions for active solar in Canada we do for passive solar (combination of sun and ambient temperature). We've built houses here that throughout the winter are almost totally heated by passive solar. Our builders have yet to catch on that they could do the same for multi residential unit or office buildings. Such buildings, according to Dalhousie's Larry Hughes, are possible here if their heights are limited to 5/6 floors.

Passive solar doesn't require panels on the roof (though these are generally added for hot water), but it does require good insulation and windows, interior materials that will retain heat when the sun shines on them through the windows, a system for circulating it, and above all, good siting. That can be the more difficult challenge. That requires thinking collectively about gaining potential from passive solar when laying out streets, when establishing set backs, when establishing height limits. No point in building to maximize solar gain if the next building up is a high rise that cuts off access to the sun for much of the day!

Halifax's climate is similar to that of Freiburg, Germany, solar capital of Europe. See http://www.solarregion.freiburg.de/solarre…. There they incorporate thinking about capturing potential solar gain into all planning and building. We have a long way to catch up to Frieburg, but at least it is there as a model for us.



Posted by Josephine on 11/22/2010 at 11:00 AM

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