EcoRenovator  

Go Back   EcoRenovator > Improvements > Conservation
Advanced Search
 


Blog Register 60+ Home Energy Saving Tips Recent Posts Search Today's Posts Mark Forums Read


Reply
 
Thread Tools Display Modes
Old 03-03-10, 07:28 AM   #1
Daox
Administrator
 
Daox's Avatar
 
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,463
Thanks: 1,107
Thanked 366 Times in 297 Posts
Default Canadian Passive House Institute website is online

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 07:37 AM..
Daox is offline   Reply With Quote
The Following User Says Thank You to Daox For This Useful Post:
Piwoslaw (07-27-10)
Old 03-03-10, 07:59 AM   #2
Daox
Administrator
 
Daox's Avatar
 
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,463
Thanks: 1,107
Thanked 366 Times in 297 Posts
Default

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?

Attached Thumbnails
Click image for larger version

Name:	450.jpg
Views:	851
Size:	37.6 KB
ID:	619  
__________________
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.
Daox is offline   Reply With Quote
Old 03-03-10, 03:08 PM   #3
Piwoslaw
Super Moderator
 
Piwoslaw's Avatar
 
Join Date: May 2009
Location: Warsaw, Poland
Posts: 923
Thanks: 175
Thanked 96 Times in 79 Posts
Default

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:
  • During the last year we used 1932 m3 of natural gas,
  • The non-heating average is 0.5 m3 per day,
  • So we used 1747 m3 for heating.
  • Nat. gas has an energy value of around 32 MJ/m3 = 8.9 kWh/m3.
  • The house's floor area (without unheated basement and garage) is 110 m2, so
  • Our house is at 141 kWh/m2/year.
I'll have to look for old gas bills to get a multi-year average, which would be much closer to being objective, since this past winter was the coldest in 30 years.

Last edited by Piwoslaw; 06-25-10 at 05:57 AM.. Reason: Data update
Piwoslaw is offline   Reply With Quote
Old 03-05-10, 11:16 AM   #4
knowbodies
Home Improvement Goon
 
Join Date: Oct 2008
Location: Moose Jaw, SK, CA
Posts: 96
Thanks: 0
Thanked 2 Times in 2 Posts
Default

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.
knowbodies is offline   Reply With Quote
Old 03-06-10, 11:12 AM   #5
WD-40
Lurking Renovator
 
Join Date: Nov 2009
Posts: 24
Thanks: 3
Thanked 2 Times in 2 Posts
Default

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
WD-40 is offline   Reply With Quote
Old 03-06-10, 11:18 AM   #6
Daox
Administrator
 
Daox's Avatar
 
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,463
Thanks: 1,107
Thanked 366 Times in 297 Posts
Default

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.
Daox is offline   Reply With Quote
Old 03-06-10, 08:44 PM   #7
WD-40
Lurking Renovator
 
Join Date: Nov 2009
Posts: 24
Thanks: 3
Thanked 2 Times in 2 Posts
Default

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 11:50 AM.. Reason: wrong #s and bad formatting
WD-40 is offline   Reply With Quote
Old 03-07-10, 02:54 PM   #8
Piwoslaw
Super Moderator
 
Piwoslaw's Avatar
 
Join Date: May 2009
Location: Warsaw, Poland
Posts: 923
Thanks: 175
Thanked 96 Times in 79 Posts
Default

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 05:47 AM..
Piwoslaw is offline   Reply With Quote
Old 03-07-10, 06:38 PM   #9
Daox
Administrator
 
Daox's Avatar
 
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,463
Thanks: 1,107
Thanked 366 Times in 297 Posts
Default

Quote:
Originally Posted by WD-40 View Post
Thanks Daox
So if I did it correctly ..
-----------------ft^2---m^2--------GJ-------Therms-----W*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
The calculations look correct. You only use 263 therms of gas a year? Thats very good. Your electric is on the higher side though (IMO). You must use some electric heat for something, water? Overall though your power consumption is great! Good job!
__________________
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 06:45 PM..
Daox is offline   Reply With Quote
Old 03-07-10, 10:55 PM   #10
WD-40
Lurking Renovator
 
Join Date: Nov 2009
Posts: 24
Thanks: 3
Thanked 2 Times in 2 Posts
Default

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 11:52 AM.. Reason: added stuff
WD-40 is offline   Reply With Quote
Reply


Tags
insulation, passive house

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:05 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Ad Management by RedTyger
Inactive Reminders By Icora Web Design