Forum: Conservation
07-29-13, 04:41 PM
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Replies: 575
Views: 1,153,893
Intercooler
I stumbled across a turbocharger intercooler and said, "What the heck" and bought it for $5.
Plan is to stick it diagonally in the window so the ports
fall inside and outside the plane of the...
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Forum: Conservation
02-02-13, 11:19 AM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
02-01-13, 07:24 AM
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Replies: 575
Views: 1,153,893
Very nice work. What tools did you use to make...
Very nice work. What tools did you use to make the drawings?
I think you have a fundamental air flow problem.
You want the ports exposed to the outside to be
on the same end of the exchanger. ...
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Forum: Conservation
01-30-13, 06:10 PM
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Replies: 575
Views: 1,153,893
My Toy HRV runs the air straight thru the...
My Toy HRV runs the air straight thru the coroplast
channels, but the open layers have side-exit at each end.
That should give some turbulence to the flow.
A relatively easy experiment is to cut...
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Forum: Conservation
01-29-13, 03:20 PM
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Replies: 575
Views: 1,153,893
Thanks for the info.
The whole metrology...
Thanks for the info.
The whole metrology problem is why I don't chase 100% efficiency.
The goal is to subtract two equal numbers. But, as you approach
that equality, the measurement error in the...
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Forum: Conservation
01-28-13, 05:54 PM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
01-28-13, 02:30 AM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
01-27-13, 09:06 PM
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Replies: 575
Views: 1,153,893
There's a lot of engineering data here ...
There's a lot of engineering data here
Klingenburg GmbH - Energy Recovery - Counterflow plate heat exchanger (http://www.klingenburg-usa.com/products/cf-plate-heat-exchanger.html)
that might...
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Forum: Conservation
01-27-13, 06:57 PM
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Replies: 575
Views: 1,153,893
This is my current configuration.
I slid out...
This is my current configuration.
I slid out the end fan, raised the top fan slightly
and slid out the core to give some sense of the
construction.
It all fits together like a Chinese jigsaw...
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Forum: Conservation
01-27-13, 05:49 PM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
01-27-13, 07:23 AM
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Replies: 575
Views: 1,153,893
Very nice work.
I'm a little confused
I...
Very nice work.
I'm a little confused
I tried these configurations:
SOLID PP CORE
DISTANCED PP CORE
ALUMINUM CORE
Which is the Solid PP core and which is distanced????
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Forum: Conservation
01-26-13, 10:01 PM
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Replies: 575
Views: 1,153,893
bunchostuff
I'll try to express some of my experience relevant to recent posts.
Be aware that I'm a firm believer in the 80-20 rule
and the concept of diminishing returns. It's fun to discuss
100%...
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Forum: Conservation
01-25-13, 06:21 AM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
01-25-13, 05:06 AM
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Replies: 575
Views: 1,153,893
I think pointing it down is backwards
Been thinking about freeze ups. The previously posted
long concentric tube heat exchanger mentioned pointing
it down to drain out the water.
Problem is that with low outside temps, the output is...
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Forum: Conservation
01-23-13, 02:57 AM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
01-22-13, 09:04 PM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
01-22-13, 06:24 AM
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Replies: 575
Views: 1,153,893
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Forum: Conservation
01-19-13, 05:10 PM
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Replies: 575
Views: 1,153,893
heat sinks
I tried the computer heat sink method.
Problem is that the thing is designed to get rid of about
100W with a temperature differential > 60C.
The heat pipe temperature differential was relatively...
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Forum: Conservation
01-13-13, 04:11 PM
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Replies: 575
Views: 1,153,893
I see, it's about freezing up.
My toy HRV...
I see, it's about freezing up.
My toy HRV has been much colder than I remember.
I had it on the ToDo list, but this thread made me go measure it.
Long story short, it was frozen solid. Never...
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Forum: Conservation
01-13-13, 04:16 AM
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Replies: 575
Views: 1,153,893
Answers don't seem to address my question, so...
Answers don't seem to address my question, so I'll try again.
I'm addressing the advisability of adding an active element
to your HRV.
Start with the tightest, most insulated house you can manage....
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Forum: Conservation
01-11-13, 07:40 PM
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Replies: 575
Views: 1,153,893
mold & active HRV
Found this dew point calculator.
It's the first one I've found that actually addresses
the issue of mold growth.
These guys are in the document preservation business.
Dew Point Calculator...
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Forum: Conservation
08-16-12, 03:47 AM
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Replies: 575
Views: 1,153,893
More HRV
Haven't seen much going on here lately.
Garage sales have been good to me.
I picked up a Holmes HAWF3030T window fan.
Dual Centrifugal blowers on one shaft and one can be mechanically reversed...
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Forum: Conservation
01-07-12, 09:37 AM
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Replies: 575
Views: 1,153,893
Why do I feel cold?
I stuck an experimental HRV through a window in an unused bedroom.
The bedroom opens into the hallway just beneath the gas furnace
return vent and the thermostat.
It's a small coroplast unit...
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Forum: Conservation
01-06-12, 01:36 AM
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Replies: 575
Views: 1,153,893
How do you measure differential pressure?
I want to measure differential air pressure near zero.
I have a pressure gauge, but it has a resolution of only
0.01" of water.
I tried building a gauge using a resistor heat source with a...
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