Entropy

Relax in southern comfort on the east bank of the Mississippi. You're just around the corner from Beale Street and Sun Records. Watch the ducks, throw back a few and tell us what's on your mind.
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JR.
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Joined: Sat May 24, 2008 7:21 pm

Re: Entropy

Post by JR. » Wed Jan 09, 2019 3:46 pm

DSCF0086 copy 2.JPG
It is a little hard to see but this is one of 3 different silt filter experiments I have running. Water is moving slowly from left to right and I perceive a reduction in silt deposited to the immediate right of the filter in that picture... there is a leaf blocking part of the view but I did not remove it because that would stir up the silt. The lighter color is where the cleaner filtered water output is flowing.
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The water flow is slowing but still coming, lots of dry leaves blowing into the open trench blocking flow.
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I don't see an obvious winner among the different silt filters yet but I can start fine and go coarse later. All seem to be doing something.

JR

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JR.
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Re: Entropy

Post by JR. » Wed Jan 09, 2019 7:09 pm

In no surprise to anybody Frank III turned on 15 minutes later than the stock one solar cell lamp but in a slight surprise to me, despite dropping the inductor in half (two in series) vs Frank II's two in parallel, there is no perceptible drop in brightness... I suspect this is by design as they bang the LED with a narrow current pulse and expect persistence of the human eye to stretch out that light impression... (or not).

This is a pleasant result so far...

next test is to see how long it stays just as bright... If more than 15 minutes longer than stock I have a solid win... :lol:

JR
[edit- it looks like we have a winner... almost midnight and Frank III is still at full brightness... The stock unit is already down to about half brightness and fading fast. We'll see how long it stays lit. /edit]

[edit2- at 1:30AM Frank III was still full brightness, and stock unit was dark... by 3:30AM both were dark. This is initially counter-intuitive but apparently inductor size affects lamp current draw more than battery charging, and higher efficiency of modern white LEDs are happy with less current. /edit]

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JR.
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Re: Entropy

Post by JR. » Fri Jan 11, 2019 12:23 pm

My last critical component (12" drain box) arrived this AM. Only purchase still short is 25' of pipe, but I have cleared 2x 25' of old pipe I can reuse.

Weather report calls for 1/2" rain tomorrow so it looks like today is time to fish or cut bait.

I can see the high spots in the trench and bottom is hard clay... The trench is deep enough it is hard to get my foot on the shovel to dig out the hard clay, but today is the time to finish leveling the high spots.

JR
[edit-- ran out of daylight so we'll see... weather report says rain beginning at 7AM ,,, I hope they are wrong /edit]

[edit2 cold and light rain... so working inside today... First course of pipe is down in the trench but not locked down. I need to dig bigger hole for 12" drain box. So far rain is light, but increased water flow in ditches. [/edit]

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JR.
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Re: Entropy

Post by JR. » Sun Jan 13, 2019 11:52 pm

Still wet... duh...
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Frank III is still spanking stock solar lamp but on dark/cloudy days like today we are lucky to get 3 hours after dark,,, stock solar lamp <2 hours.
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Ran out of daylight but got first course of pipe into the trench friday night before the rain.

Saturday the rain said nope not good enough... So I pulled it out again to reset.

Today I gave it another try... My plan for two courses of pipe was over/under, but managed to lay down two pipes side-by-side for top 50' of trench. The rest was mostly over-under with low pipe always lower. The solid pipes should support a siphon effect once full of water, but upper pipe won't start flowing by itself at current modest back ditch level, lower pipe flowing slowly now.

In a deja vu repeat of 12 years ago, the pipes were trying to float in water still in the trench. I managed to pin them down and dump enough dirt on top to hold them down.

Water is slowly coming out of downhill end of the lower pipe, high pipe is still dry. It appears I may have too much silt filtering in place (two filters in series on each drain box), but I will try not to mess with it until after things are drier.
DSCF0092.JPG
Picture of both drain boxes at top of drain pipes.

Just like last time I have run out of patience... I am optimistic this will be much better than first time.

JR

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JR.
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Re: Entropy

Post by JR. » Mon Jan 14, 2019 11:47 am

Very clear water, slowly trickling out bottom end of lower pipe, but still standing water in back ditch higher than the drain pickup levels...

I am having a hard time not ripping out the silt filters. The fact that outdoor temperature is in 40s is helping me resist for now. :lol:

[edit

Temperature rose all the way to 49' :D

No battle plan survives contact with the enemy and my silt filters were a fine plan, that worked to keep silt out of the pipe, alas too well. There was clean water coming out the bottom of the drain pipe but only a trickle.

I just removed both silt filters from the low pipe and the back rain ditch is now draining. 8-) Water is now moving from back to mid, and mid to front as it should. Not a massive flow, but significant and I can already see back ditch water levels dropping.

I just opened a celebratory (half gallon) bottle of beer...
just1beer.pdf
(478.04 KiB) Downloaded 4 times
[/edit]

JR

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JR.
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Re: Entropy

Post by JR. » Tue Jan 15, 2019 3:13 pm

Just knocked off another repair.... My touch tone phone at my computer desk has been squirrelly making odd noises instead of tone for years. I was recently tangled up when the credit card company robo called me to approve a questionable purchase by pressing the #1 button and I couldn't. :oops:

I just tore into it, and was pleasantly surprised by how easy it was to fix... the 3x4 keypad has one switch closure per row, and one switch closure per column... these open contact switches are on the outside edges of the keypad for relatively easy access.

I purchased my phone set in 1985 but it was probably in use by me for at least a decade before that and perhaps not even new when I first got it. Back then phones used to be phone company property and not for sale.

I used some 400 grit sandpaper on one of the difficult contacts but they look like a pretty robust design

Phone is now working perfectly, but I spent about an hour scrubbing decades of grime off it. :lol:

Chalk up another win.

JR

PS: I just bought another book of forever stamps, price is going up later this month. :lol:

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