![]() |
|
![]() |
#1 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
![]() I just got an email from a Canadian friend of mine telling me that the Canadian Passive House Institute just got their website up and running. It looks like it might have more info (or is at least better laid out) than the US Passive House Institute website, although I really haven't dove into it yet. However, I'll be looking it over soon!
![]()
__________________
Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by Daox; 03-03-10 at 06:37 AM.. |
![]() |
![]() |
The Following User Says Thank You to Daox For This Useful Post: | Piwoslaw ![]() |
![]() |
#2 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
![]() Nice chart here.
I decided it would be good for me to calculate my kWh heating energy use per square meter... Much to my dismay, I'm at 200. This is simply my gas usage (includes water heating, dryer and range), not electric. So, its not incredibly accurate, but fairly close. Anyone else care to share their energy usage?
__________________
Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. |
![]() |
![]() |
![]() |
#3 |
Super Moderator
Join Date: May 2009
Location: Warsaw, Poland
Posts: 964
Thanks: 189
Thanked 110 Times in 86 Posts
|
![]() I got 175 kWh/m2 per year. I had to do a bunch of approximating (I don't yet have data for the full heating season, and can't find bills from previous years), so it could be off by 20%.
EDIT (25-06-2010): I finally completed a full year of logging the gas usage, so here is better data:
Last edited by Piwoslaw; 06-25-10 at 04:57 AM.. Reason: Data update |
![]() |
![]() |
![]() |
#4 |
Home Improvement Goon
Join Date: Oct 2008
Location: Moose Jaw, SK, CA
Posts: 96
Thanks: 0
Thanked 2 Times in 2 Posts
|
![]() Hmmm, let's see. In the past year:
2243 cubic meters of natural gas 2233 KWh of electricity 200 sq meters of living space Assuming 1 kwh = 3.6 MJ and 37MJ per cubic meter of natural gas, I used about 126 KWh/m2. Not bad for a hundred year old house. |
![]() |
![]() |
![]() |
#5 |
Lurking Renovator
Join Date: Nov 2009
Posts: 24
Thanks: 3
Thanked 2 Times in 2 Posts
|
![]() Anyone care to show the math to figure this out, I tried google and got a million ways to figure it out but nothing seems to give me results.
thanks |
![]() |
![]() |
![]() |
#6 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
![]() I took my gas usage (gas forced air furnace is my main heat source) in therms and added it up for the entire year. Then, I converted the therms to kWhs. 1 therm = 29.3 kWh.
Then, I took my square footage of the house, converted it to square meters. 1 sqft = 0.0929 sqm. Finally, I divided my total kWh by the square meters to get my kWh/m^2 for a year.
__________________
Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. |
![]() |
![]() |
![]() |
#7 |
Lurking Renovator
Join Date: Nov 2009
Posts: 24
Thanks: 3
Thanked 2 Times in 2 Posts
|
![]() Thanks Daox
So if I did it correctly .. -----------------ft^2---m^2--------GJ-------Therms-----kW*h-----kWh/m^2 Living Space-----1240---115.196 Natural Gas--------------------------27.8-----263.49-----7720.25--- 67.02 Electricity------------------------------------------------5109------ 44.35 Total---------------------------------------------------------------111.37 Last edited by WD-40; 03-08-10 at 10:50 AM.. Reason: wrong #s and bad formatting |
![]() |
![]() |
![]() |
#8 | |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
![]() Quote:
__________________
Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by Daox; 03-07-10 at 05:45 PM.. |
|
![]() |
![]() |
![]() |
#9 |
Super Moderator
Join Date: May 2009
Location: Warsaw, Poland
Posts: 964
Thanks: 189
Thanked 110 Times in 86 Posts
|
![]() Nice result WD-40.
To Daox's post I'll add that in my case I use nat. gas for the stove and hot water, so by looking at gas usage for the non-heating season I know how much goes for those needs per day (about 0.5m3/day in my case). I multiply that by 365 and subtract from the year's total gas, and that gives me my gas usage for heating only. If you want to be really detailed about this, then you should calculate how much hot water turns into space heating, same for the oven, refrigerator, hair driers, lights, electronics, etc. This is almost nothing for a large, inefficient house, but could probably amount to a large percent in a passive house. Maybe these things, plus the occupants' body heat, are taken into account when planning a passive house? I read that when some Scandinavians want to heat up their house they invite friends/neighbors over for a party. Last edited by Piwoslaw; 06-25-10 at 04:47 AM.. |
![]() |
![]() |
![]() |
#10 |
Lurking Renovator
Join Date: Nov 2009
Posts: 24
Thanks: 3
Thanked 2 Times in 2 Posts
|
![]() Thanks guys .. My gas bill is low due to 97% efficient furnace and 68 degree temp on programmable thermostat, and new hot water tank.
My power consumption is high even tho I have reduced a ton of usage.. I had the furnace fan on low speed 24/7 to move air .. I thought more efficient, but cost a ton in power, I also had a Swordfish® UV Air Purifier but that cost a ton run 24/7 , so both are on timers now to save a bit. All bulbs are either CFL or LED, I spent over $500 on 7 watt LED bulbs for the lower level recently. I recently spent around $2000 on an LG WM3988HWA combo washer dryer that runs on 120 volt and Ventless Condensing Drying System , plus I got a similar new LG dishwasher with the same Ventless Condensing Drying System so I'm hoping that will reduce the power bill a lot more. Damn it costs so much to save energy. Last edited by WD-40; 03-08-10 at 10:52 AM.. Reason: added stuff |
![]() |
![]() |
![]() |
Tags |
insulation, passive house |
|
|