Forum: Conservation
03-21-19, 07:40 PM
|
Replies: 12
Views: 19,254
|
Forum: Solar Power
03-21-19, 07:27 PM
|
Replies: 13
Views: 33,153
There are numerous issues with this.
To name a...
There are numerous issues with this.
To name a few...
The output of a panel is related to something like the cosine of
the angle of incidence. As the sun moves the output changes.
You can keep...
|
Forum: Geothermal & Heat Pumps
06-12-18, 08:02 PM
|
Replies: 17
Views: 49,510
R134 leaks
As it was explained to me...
The R134A molecule is VERY MUCH SMALLER than the molecule
for R12. It leaks out thru the hoses because they are too porous
to contain it. That's why you can't just...
|
Forum: Solar Heating
06-08-16, 03:13 AM
|
Replies: 7
Views: 9,929
efficiency?
This question created a bunch of other questions. After thinking about it...
The energy out of the system is equal to the solar energy impinging on it.
The efficiency of the system is the ratio of...
|
Forum: Solar Power
04-16-16, 01:17 AM
|
Replies: 22
Views: 28,402
Interesting project.
Please post more pictures...
Interesting project.
Please post more pictures to show how you dealt with some issues...
Looks like sheet metal with the "sign" cut out. Very nice job...
How did you address the issue of having...
|
Forum: Conservation
01-12-16, 06:56 PM
|
Replies: 9
Views: 8,205
Measure everything.
The more inside/outside differential temperature,
the more resolution you get.
I'd measure both inside and outside. Otherwise,
you have to guess the leakage path.
Windy day can give you even...
|
Forum: Solar Power
10-06-15, 06:45 PM
|
Replies: 32
Views: 71,197
Looks like a fun project.
I don't have any...
Looks like a fun project.
I don't have any direct experience, but I do have some concerns.
I'd worry about the generator shaking the life out of both the
solar panels and the battery.
I do about...
|
Forum: Other Improvements
08-14-15, 02:48 AM
|
Replies: 16
Views: 16,832
Yep, standard patio door with standard patio...
Yep, standard patio door with standard patio screen.
Not too restrictive.
Not too much chance of a bug flying against the wind
and getting thru the fan anyway.
This fan was made 40 years ago...
|
Forum: Other Improvements
08-12-15, 03:18 AM
|
Replies: 16
Views: 16,832
arduino temp/humidity
There you go.
Wiring up DHT11 Temp & Humidity sensor to the Arduino | www.hobbyist.co.nz (http://www.hobbyist.co.nz/?q=documentations/wiring-up-dht11-temp-humidity-sensor-to-your-arduino)
Looks...
|
Forum: Other Improvements
07-14-15, 11:53 PM
|
Replies: 16
Views: 16,832
dew point calculator
Dew Point Calculator (http://www.dpcalc.org/)
It's optimized to show mold growth potential.
it's not a controller, but with current humidity and temperature
forecast, you can make some guesses....
|
Forum: Tools
01-25-15, 04:58 PM
|
Replies: 39
Views: 28,316
cool
Friend brought his Seek by yesterday. Way cool device.
Seems like it's compatible with relatively few of the newer
Android phones.
I don't need a phone, so buying one to go with the Seek
pushes...
|
Forum: Conservation
07-29-13, 04:41 PM
|
Replies: 575
Views: 1,281,778
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...
|
Forum: Conservation
07-17-13, 08:12 PM
|
Replies: 14
Views: 12,829
|
Forum: Conservation
07-16-13, 08:23 PM
|
Replies: 14
Views: 12,829
|
Forum: Appliances & Gadgets
06-06-13, 08:13 PM
|
Replies: 81
Views: 82,846
|
Forum: Conservation
02-02-13, 11:19 AM
|
Replies: 575
Views: 1,281,778
|
Forum: Conservation
02-01-13, 07:24 AM
|
Replies: 575
Views: 1,281,778
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. ...
|
Forum: Conservation
01-30-13, 06:10 PM
|
Replies: 575
Views: 1,281,778
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...
|
Forum: Geothermal & Heat Pumps
01-30-13, 05:16 PM
|
Replies: 57
Views: 54,383
|
Forum: Conservation
01-29-13, 03:20 PM
|
Replies: 575
Views: 1,281,778
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...
|
Forum: Conservation
01-28-13, 05:54 PM
|
Replies: 575
Views: 1,281,778
|
Forum: Conservation
01-28-13, 02:30 AM
|
Replies: 575
Views: 1,281,778
|
Forum: Conservation
01-27-13, 09:06 PM
|
Replies: 575
Views: 1,281,778
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...
|
Forum: Conservation
01-27-13, 06:57 PM
|
Replies: 575
Views: 1,281,778
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...
|
Forum: Conservation
01-27-13, 05:49 PM
|
Replies: 575
Views: 1,281,778
|