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Search: Posts Made By: WattWatcher
Forum: Conservation 05-17-13, 06:46 PM
Replies: 569
Views: 661,482
Posted By WattWatcher
I've decided to try building a heat exchanger...

I've decided to try building a heat exchanger core with the simple cross flow tube design. Below is a link to CAD model of the concept. I'm going to use polypropylene drinking straws for the tubes....
Forum: Conservation 05-17-13, 06:36 PM
Replies: 569
Views: 661,482
Posted By WattWatcher
Found some interesting products from the U.K. The...

Found some interesting products from the U.K. The first two use the spiral/tubular heat exchanger that was mentioned in this thread at one point. The last one is really interesting - a passive HRV,...
Forum: Conservation 05-15-13, 02:10 PM
Replies: 569
Views: 661,482
Posted By WattWatcher
Yes, that looks like a really great device....

Yes, that looks like a really great device. Thanks!
Forum: Conservation 05-13-13, 12:00 AM
Replies: 569
Views: 661,482
Posted By WattWatcher
We have a very different climate here in...

We have a very different climate here in Berkeley, no need for air conditioning at all. I think that must mean that our dew point is usually below 60F, but I've only just started paying attention to...
Forum: Conservation 05-11-13, 09:31 PM
Replies: 569
Views: 661,482
Posted By WattWatcher
I know nothing about dew point and humidity, but...

I know nothing about dew point and humidity, but I have read that HVRs can make a damp interior drier. Obviously I have to educate myself about this topic. So, why would my house be drier, while the...
Forum: Conservation 05-10-13, 03:48 PM
Replies: 569
Views: 661,482
Posted By WattWatcher
Commercial or DIY HRV for a cottage in California?

OK, my test worked so here goes...

Greetings everyone! I'm a new member and I think it took me four hours to go through all of the posts going back more than three years! I commend and thank all...
Forum: Conservation 05-10-13, 03:39 PM
Replies: 569
Views: 661,482
Posted By WattWatcher
Testing post for the first time.

Testing post for the first time.
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