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Search: Posts Made By: roflwaffle
Forum: The Billiards Room 07-30-17, 02:00 PM
Replies: 7
Views: 5,226
Posted By roflwaffle
Does anyone have a link to their prediction...

Does anyone have a link to their prediction hits/misses?
Forum: Renovations & New Construction 05-20-17, 10:12 AM
Replies: 28
Views: 16,616
Posted By roflwaffle
What about trying masonry/timber structures? I'm...

What about trying masonry/timber structures? I'm not sure how well it would stand up to a tornado, but interleaving wood with masonry apparently results in structures with excellent compressive and...
Forum: Appliances & Gadgets 12-25-16, 10:02 PM
Replies: 11
Views: 8,886
Posted By roflwaffle
That's so funny. I've been meaning to fix my...

That's so funny. I've been meaning to fix my mom's garage door with the exact same problem. Here's a complete teardown if anyone needs to also replace the bearings and worm gear.
...
Forum: Lighting 12-03-16, 01:39 PM
Replies: 11
Views: 10,036
Posted By roflwaffle
I haven't had an LED explode, but I've had two...

I haven't had an LED explode, but I've had two (out of maybe 60+) CFLs blow. With that said, I'm pretty sure the fire risk was less than when an incandescent malfunctions/blows, since those are much...
Forum: Renovations & New Construction 11-26-16, 05:18 PM
Replies: 161
Views: 157,272
Posted By roflwaffle
Is that 3000 lumen per fixture or per tube (x2?)?...

Is that 3000 lumen per fixture or per tube (x2?)? If it's per tube, I'd go for it as long as you can either see them in store or they have a decent return policy. If those are ~1500 lumen per tube...
Forum: Solar Power 10-16-16, 12:27 PM
Replies: 157
Views: 86,850
Posted By roflwaffle
The problem with your example is that you're...

The problem with your example is that you're starting off with -$10000 in the PV panel comparison. In either situation, you would start out with a +$10000 investment. In one, you put that money into...
Forum: Solar Power 10-16-16, 02:19 AM
Replies: 157
Views: 86,850
Posted By roflwaffle
An 8 year payback is a 12+% return on investment,...

An 8 year payback is a 12+% return on investment, which is pretty good in my experience. That's ~1.5x the real return of the S&P 500 over the past century.

:thumbup:
Forum: Conservation 07-27-16, 07:06 PM
Replies: 11
Views: 8,175
Posted By roflwaffle
Like static electricity? :thumbup: ...

Like static electricity? :thumbup:
...
Forum: Conservation 07-27-16, 10:00 AM
Replies: 11
Views: 8,175
Posted By roflwaffle
For what it's worth, the thermal conductivity of...

For what it's worth, the thermal conductivity of air is only 1.5x that of Argon. I recommend building your own double or triple pane windows with larger air gaps before trying to pump propane into an...
Forum: Appliances & Gadgets 07-23-16, 05:54 PM
Replies: 6
Views: 4,362
Posted By roflwaffle
It's probably OK for most peple, but I'd feel...

It's probably OK for most peple, but I'd feel better if the service was behind SSH with a 2048 or 4096 bit key. 1024 bit keys can probably be broken by most nation-states, and sooner or later by...
Forum: Appliances & Gadgets 07-04-16, 03:26 PM
Replies: 4
Views: 4,772
Posted By roflwaffle
That's a good question. The only thing I found...

That's a good question. The only thing I found while searching for that info was a reference to the optimal height being 8-9+ feet, probably to minimize the space between the fan and the person being...
Forum: Renovations & New Construction 01-24-16, 01:27 PM
Replies: 17
Views: 10,184
Posted By roflwaffle
I think it depends on the construction techniques...

I think it depends on the construction techniques used. Someone could set up a frame/insulation on the exterior instead of the interior. And if they did insulate the interior, the outside would make...
Forum: Appliances & Gadgets 12-05-15, 04:26 PM
Replies: 2
Views: 3,388
Posted By roflwaffle
That seems right. It's a little higher than the...

That seems right. It's a little higher than the ~450btu/hr measured here (3.3 therms/month), but more or less ballpark.

http://physics.ucsd.edu/do-the-math/2012/03/pilot-lights-are-evil/
Forum: Solar Power 04-05-15, 03:40 PM
Replies: 28
Views: 17,395
Posted By roflwaffle
I think it's related to negative pricing for wind...

I think it's related to negative pricing for wind power in TX.

It's better for a wind farm to drum up night time demand via a "free" program from the utility than have to pay someone to take their...
Forum: Lighting 01-18-15, 04:53 PM
Replies: 12
Views: 16,436
Posted By roflwaffle
My guesstimate is something like 15 years at...

My guesstimate is something like 15 years at 10c/kWh, or less if you pay more for electricity. Lets say the 10" tubular skylight provides ~3000 lumens (Site says <4k max) that you would otherwise...
Forum: Other Improvements 11-18-14, 07:20 PM
Replies: 15
Views: 10,883
Posted By roflwaffle
Looks good!

Looks good!
Forum: Appliances & Gadgets 11-07-14, 06:14 PM
Replies: 17
Views: 8,977
Posted By roflwaffle
I do. Well, did. My mom gets the terrestrial...

I do. Well, did. My mom gets the terrestrial stations she wants these days, so a normal radio is fine for her, but back when we were in the boonies I set up an old PIII laptop in a manner similar to...
Forum: Appliances & Gadgets 11-06-14, 11:46 PM
Replies: 17
Views: 8,977
Posted By roflwaffle
Or an old laptop running *nix. Serial/USB IR...

Or an old laptop running *nix. Serial/USB IR receivers are great. IIRC, you can configure any remote to work with lircd.
Forum: Geothermal & Heat Pumps 11-02-14, 10:14 AM
Replies: 57
Views: 46,825
Posted By roflwaffle
What functionality do you need to generalize?

What functionality do you need to generalize?
Forum: Solar Heating 08-09-14, 12:34 AM
Replies: 11
Views: 8,957
Posted By roflwaffle
Edit- NVM, I just noticed you're looking for heat...

Edit- NVM, I just noticed you're looking for heat gain

I've been thinking about doing something similar and have been hung up about whether to do external roll up shades, like these...

Shade...
Forum: The Billiards Room 03-02-14, 08:41 PM
Replies: 63
Views: 26,326
Posted By roflwaffle
Speaking of politics! :D ...

Speaking of politics! :D

http://blogs.ajc.com/mike-luckovich/files/2011/09/mike09222011.jpg
Forum: The Billiards Room 03-01-14, 05:31 PM
Replies: 63
Views: 26,326
Posted By roflwaffle
An honest man! ...

An honest man!

http://cdn.svcs.c2.uclick.com/c2/358c9980b794012e2f8f00163e41dd5b
Forum: The Billiards Room 02-28-14, 10:34 PM
Replies: 63
Views: 26,326
Posted By roflwaffle
Which is exactly why this thread reminded me of...

Which is exactly why this thread reminded me of that comic.
Forum: The Billiards Room 02-25-14, 11:13 PM
Replies: 63
Views: 26,326
Posted By roflwaffle
The thread title reminds me of this comic. ...

The thread title reminds me of this comic.

http://imgs.xkcd.com/comics/cold.png
Forum: Solar Power 11-09-13, 03:11 PM
Replies: 7
Views: 4,970
Posted By roflwaffle
I think this is partially an economic decision....

I think this is partially an economic decision. The long run cost of PV is something like $.03/kWh, which is generally way below what anyone pays for electricity. On the flip side, if they store it,...
Showing results 1 to 25 of 117

 
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