Go Back   EcoRenovator > Improvements > Conservation
Advanced Search

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

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 02-21-10, 08:18 AM   #1
Super Moderator
Piwoslaw's Avatar
Join Date: May 2009
Location: Warsaw, Poland
Posts: 961
Thanks: 188
Thanked 110 Times in 86 Posts
Default DIY ventilation heat exchanger

I am thinking more and more about our upcoming renovation, a part of which will hopefully be redoing our ventilation system. One of the things that would greatly increase the efficiency of the new setup is an air-air heat exchanger (recuperator). The ones I've seen here cost the equivalent of US$2000-2500, which seems a lot. Does anyone know how easy it would be to build one at home?

I found a local forum (in Polish) where someone was planning to make one. The plan was for a 120cm long countercurrent heat exchanger, with 200mm or 250mm diameter input/output and 25m^2 of exchange area. The calculations for the number of sheets of thin steel (later copper or aluminum) needed came to a cost of 60%-70% of a factory-made unit, plus random parts, machinery, at least a whole week of time, etc. The whole thread was 60 pages long, with 50 posts/page, and a change in design every 5 posts, so I gave up after the second page and have no idea if the project ever got off the ground. No pictures in that thread (or only for registered users).

Any ideas on how to go about making a more or less efficient (60+%) heat exchanger? Pictures/drawings of the insides of different types would be nice, as would a cost vs. efficiency comparison.

Piwoslaw is offline   Reply With Quote

erv, heat recovery, hrv

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 08:41 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Ad Management by RedTyger
Inactive Reminders By Icora Web Design