12-01-11, 07:24 AM | #141 |
Viking House
Join Date: Dec 2011
Location: Dublin, Ireland
Posts: 9
Thanks: 0
Thanked 1 Time in 1 Post
|
Hi, I was checking links to my website and found this forum, its been interesting reading!
I build Passive Houses in Ireland and the UK and we make our own HRV units that fit completly into the external wall. We fitted close to 50 units this year and they seem to be working well with higher return air temperatures than some of the PH Certified Paul units. We use Copper fine-wire heat exchangers that have 20km of wire in each heat exchanger. Last edited by Viking House; 12-01-11 at 07:30 AM.. |
12-01-11, 07:32 AM | #142 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
Welcome to the site Viking House. You make what we dream of! Would it be possible for you to share plans of your HRV units with us? Do you have any idea how efficient they are?
__________________
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. |
12-01-11, 08:01 AM | #143 |
Viking House
Join Date: Dec 2011
Location: Dublin, Ireland
Posts: 9
Thanks: 0
Thanked 1 Time in 1 Post
|
I have some data from a data logger but the file is too big to upload. I remember last January when it was -13 degrees C the return air temperature was +17 degrees C, and the house temperature was 19 degrees.
|
The Following User Says Thank You to Viking House For This Useful Post: | Daox (12-01-11) |
12-01-11, 10:13 AM | #144 | |
Lex Parsimoniae
Join Date: Feb 2009
Location: Woburn, MA
Posts: 4,918
Thanks: 114
Thanked 250 Times in 230 Posts
|
Quote:
might not be something that a DIYer could duplicate in a home shop.. If it turns out that I have to install an HRV unit in my basement, I hope it won't turn out to be too expensive.
__________________
My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. |
|
12-01-11, 01:55 PM | #145 |
Viking House
Join Date: Dec 2011
Location: Dublin, Ireland
Posts: 9
Thanks: 0
Thanked 1 Time in 1 Post
|
Well, I suppose I could sell you some heat exchangers at cost (€150 each plus transport) if you want to try them out?
Last edited by Viking House; 12-01-11 at 01:57 PM.. |
12-01-11, 02:43 PM | #146 | |
Supreme EcoRenovator
Join Date: Mar 2009
Location: Portland, OR
Posts: 4,004
Thanks: 303
Thanked 723 Times in 534 Posts
|
Quote:
Will there be issues with US electricity? -AC_Hacker
__________________
I'm not an HVAC technician. In fact, I'm barely even a hacker... |
|
12-01-11, 03:11 PM | #147 |
Viking House
Join Date: Dec 2011
Location: Dublin, Ireland
Posts: 9
Thanks: 0
Thanked 1 Time in 1 Post
|
That €150 is just for the FiWi heat exchanger, not the box, motors or electronics! You can use US fans and control them with a potentiometer and make your own box, have you looked at EC fans?
Last edited by Viking House; 12-01-11 at 03:17 PM.. |
12-01-11, 05:31 PM | #148 | |
Supreme EcoRenovator
Join Date: Mar 2009
Location: Portland, OR
Posts: 4,004
Thanks: 303
Thanked 723 Times in 534 Posts
|
Quote:
Also, how does someone clean one of these units to remove fine dust, etc? -AC_Hacker
__________________
I'm not an HVAC technician. In fact, I'm barely even a hacker... |
|
12-01-11, 06:25 PM | #149 | |
Supreme EcoRenovator
Join Date: Mar 2009
Location: Portland, OR
Posts: 4,004
Thanks: 303
Thanked 723 Times in 534 Posts
|
Viking House,
I just noticed that on your Viking House page, you said, Quote:
Do you have problems with the sonic boom when the unit is operating? Concerned, -AC_Hacker
__________________
I'm not an HVAC technician. In fact, I'm barely even a hacker... |
|
12-02-11, 02:25 AM | #150 |
Viking House
Join Date: Dec 2011
Location: Dublin, Ireland
Posts: 9
Thanks: 0
Thanked 1 Time in 1 Post
|
I got the vapor equalization speed figures from one of the science guys on the UK Green Builders Forum who is usually pretty reliable, I tried to verify the by doing some Google searches but failed so I'll probably reword it and leave out the "at speeds of + - 500m/sec" bit!
Last edited by Viking House; 12-02-11 at 03:55 AM.. |
Tags |
erv, heat recovery, hrv |
|
|