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Search: Posts Made By: AC_Hacker
Forum: Conservation 03-28-17, 10:39 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
I have seen HRVs that have reversible DC fans. ...

I have seen HRVs that have reversible DC fans.

The reversing work is done with electronics.

In these HRVs the core has enough thermal mass, that:

1. a 'charge' of indoor air is blown out,...
Forum: Conservation 02-09-17, 01:48 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
On Marsden's unit, air was brought in, then the...

On Marsden's unit, air was brought in, then the fans reversed, and inside air went out through the same unit.

We have seen other units that use a similar principle using mechanical reversing.
...
Forum: Conservation 02-07-17, 06:39 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
3-D Printed HX Core

HERE (http://www.instructables.com/id/Heat-Exchangers-and-3D-Printing/?ALLSTEPS)

-AC
Forum: Conservation 02-06-17, 11:32 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Installing a Single Room Energy Recovery Vent

http://www.arttec.net/Mini_HRV/TwinFresh%20Comfo%20%20RA1-50-2_parts.jpg


Guy Marsden on Installing a Single Room Energy Recovery Vent... (http://www.arttec.net/Mini_HRV/RA1-50-2_install.html)
...
Forum: Conservation 02-06-17, 10:24 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Looks great! Be sure and take lots of photos...

Looks great!

Be sure and take lots of photos to share.

-AC
Forum: Conservation 12-08-16, 08:14 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Really like the "WildSnow...

Really like the "WildSnow (HTTP://www.wildsnow.com/17884/how-to-build-air-cross-flow-heat-exchanger-budget/)" HRV.

Just brilliant!

-AC_Hacker
Forum: Conservation 07-18-16, 12:01 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Awesome information! You must post more. ...

Awesome information!

You must post more.

-AC_Hacker
Forum: Conservation 05-15-15, 10:06 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
What an awesome project!!

Amazing, inspiring project, and beautifully documented too.

Thank you for going to the trouble of posting it for all to see.

I would have to say, that I fear that the small holes you drilled in...
Forum: Conservation 09-23-14, 09:43 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Yeah, when I was working with Mike, he had a...

Yeah, when I was working with Mike, he had a similar instrument, and we were measuring airflow from a duct opening. He measured at the edges and the center and various other places in between, and it...
Forum: Conservation 09-22-14, 03:35 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Congratulations on CO2 neutrality!!! You...

Congratulations on CO2 neutrality!!!

You have achieved a goal that most of us haven't even allowed ourselves to dream of... and you have done it, very nice.



But as you surely know, a lot of...
Forum: Conservation 07-29-14, 10:12 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Nice! How civilized!! -AC

Nice! How civilized!!

-AC
Forum: Conservation 07-28-14, 08:39 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
You might try the Homemade Heat Pump Manifesto...

You might try the Homemade Heat Pump Manifesto (http://ecorenovator.org/forum/2631-post1.html)

You should find a good bit of information there.

-AC_Hacker
Forum: Conservation 07-28-14, 01:10 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
The fan type is "radial", EBM Pabst make an...

The fan type is "radial", EBM Pabst make an assortment of them.

Ebay has a pretty good listing. (http://www.ebay.com/sch/i.html?_kw=radial+fan)

They tend to be very expensive...
Forum: Conservation 07-28-14, 10:48 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
http://ecorenovator.org/forum/attachments/conserva...

http://ecorenovator.org/forum/attachments/conservation/2978d1360202108-arduino-co2-sensor-controls-pcm-fans-hrv-fans-jpg

I prefer this kind of fan, it has the ECM motor integrated into the hub,...
Forum: Conservation 06-12-14, 10:45 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Piwoslaw, I agree with the concept for sure,...

Piwoslaw,

I agree with the concept for sure, but I think your idea of "a few meters" may be a bit naive. You may be underestimating by a factor of 6.

Most earth-tube designs I have seen call...
Forum: Conservation 06-11-14, 11:22 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
I think you should be more than a little...

I think you should be more than a little concerned, HRV condensation is a major issue here in PDX.

A previous PDX poster to the thread (http://ecorenovator.org/forum/18884-post189.html) made a...
Forum: Conservation 11-14-13, 01:35 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
geodans, great to meet you, too. I'm glad to...

geodans, great to meet you, too.

I'm glad to be able to help you on your HRV project.

Your new home build sounded pretty spectacular from a EcoRenovator point of view. I don't know if you did...
Forum: Conservation 11-13-13, 12:42 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Send me a private message or email. -AC

Send me a private message or email.

-AC
Forum: Conservation 11-13-13, 11:39 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Hey, I have a substantial stack (1' x 1' x 1.5')...

Hey, I have a substantial stack (1' x 1' x 1.5') of pre-cut pieces that you can have for free... I used them for experiments (which worked just fine) and have decided to use a different approach.
...
Forum: Conservation 05-12-13, 12:46 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
http://ecx.images-amazon.com/images/I/41QVIuNxDpL....

http://ecx.images-amazon.com/images/I/41QVIuNxDpL._SL500_SS75_.jpg

You might want to get one or two of these things...
Forum: Conservation 05-10-13, 05:13 PM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
WattWatcher, Thanks for your post. I think...

WattWatcher,

Thanks for your post. I think your idea of a 'lessons learned' thread is one that is very much needed, and there's probably no one better suited for that project than you, since you...
Forum: Conservation 03-01-13, 10:04 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
Regarding your concern for fans, here are some...

Regarding your concern for fans, here are some links to a kind of centrifugal fan, similar to the type that I have acquired for the HRV that I am currently assembling parts for.

Link #1...
Forum: Conservation 02-01-13, 10:06 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
If this was a single cross flow core, it wouldn't...

If this was a single cross flow core, it wouldn't make any difference.

But with multiple cores, you are correct.

Best,

-AC
Forum: Conservation 01-25-13, 12:37 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
What is the volume of your apartment? -AC

What is the volume of your apartment?

-AC
Forum: Conservation 01-23-13, 09:45 AM
Replies: 575
Views: 1,153,893
Posted By AC_Hacker
I wish I remembered where the link to the...

I wish I remembered where the link to the cardboard HX was...

[EDIT: Thanks to Kostas the link is HERE (http://cheap-easy-living.weebly.com/index.html) and also HERE...
Showing results 1 to 25 of 123

 
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