Over the same amount of time a similar investment in PV would save even more
money.
R. Walters
r...@solarray.com
Solar Engineer
On Apr 8, 2010, at 4:28 PM, Bob-O Schultze wrote:
> Guys,
> Is it just me being dense or are none of you folks advocating for higher VD
> looking at the savings ov
Bob-O
I just re-opened the spreadsheet that I used to make my example; the
spread sheet was using 330 volts not 350 volts for the voltage drop
calculation. That error doesn't change the example in any material way.
No, I haven't got any 91-watt PV modules these days. But you might get
91 wa
No argument with Bob-O on this one. Going with a 1% to 1.3% VD on the DC side,
at most, pays off in the long run. 1% or less on AC output. Efficiency rules.
DP
Sent via BlackBerry by AT&T
-Original Message-
From: Bob-O Schultze
Date: Thu, 8 Apr 2010 18:03:00
To: RE-wrenches
Subject: Re
Kent,
In fact, assuming a 33% wire mark-up and the kind of wire pricing that we
Wrenches generally get (I got quotes today), the difference between #10 and #4
is $0.90/ft or $900/M which is how your scenario plays out. You say that just
adding more PV will cover it. I beg to differ. You installi
Bob O Shultz writes:
> Is it just me being dense or are none of you folks advocating for higher
> VD looking at the savings over time?
I'm not going to touch that with a 10' pole!
> If we assume that Kent's wire costs are correct (and even assuming a 33%
> mark-up, he's paying WAY, WAY too much
Bob-O
Your calculation of the savings proves the point. Going from 10 AWG to
4 AWG costs $2780 today and saves $375 over the next 25 years. Now
think about how much it would cost to put in 91 watts more PV; that'll
save $375 over the next 25 years too.
Granted the published wire prices are
Hey there Phil,
I know it is not polite to say something if you cannot say something
nice, but hey buyer beware. My .02.
If you haven't had to deal with a Generac you are in for a huge
surprise. I have dealt with a variety of generators for close to 22+
years and I have only seen one Gen
At the risk of jump-starting a flogged horse, if you'll forgive my mangled
metaphors, I wanted to chime in on this thread with some new information.
Generac has been working to develop a generator specifically for the
off-grid market. I don't know much about it and we don't carry generators
so I'm
Guys,
Is it just me being dense or are none of you folks advocating for higher VD
looking at the savings over time?
If we assume that Kent's wire costs are correct (and even assuming a 33%
mark-up, he's paying WAY, WAY too much for wire) , the difference in delivered
watts between #10 and # 4 wi
Drake, I measured and published a paper in 1992 on the after 10 year
performance of solar modules, my study concluded these modules degraded
approximately 1% per year. The purpose of the study was the effect on utility
demand.
I have heard there are some very good studies with similar results.
Nick,
Advocating for an economic comparison between the cost of wire and the
energy saved by larger wire is not the same as advocating for high
voltage drops, or low ones either. Even with the present low prices
for PV modules and high prices for copper wire, a 100-ft long 350-volt
dc input t
As I understand it, Honeywell makes one small component in the wind
turbine controller.
But the consumer is going to see the Honeywell brand and figure it has
to be good.
I just love marketing!
FYII'm every bit as excited to see wind turbines in retail stores
as the PV folks are
about PV s
David,
I was suspicious about the Windtronics claim that they use the
Honeywell logo with permission so I check with Honeywell. Turns out
that Windtronics really is a Licensee of the Honeywell name for wind
generators. The web site I referenced in my earlier post is out of
date.
Kent Osterb
Saw one displayed at the energy fair Sept. 09 in Fredericksburg, TX. The sales
"rep" was explaining to some guy how "she'll start makin' electricity at 2mph".
I asked "how much?" Got a very dirty lookI know where all the used car
sales people got jobs when car sales went south.
Holt E.
What is the documentation for 10% module voltage degradation? I have
heard different ideas on what will degrade over how much time. For
direct grid tie, I shoot for a voltage drop 1% maximum on the DC side.
Thanks,
Drake
At 11:08 AM 4/8/2010, you wrote:
I usually keep in mind that the modul
Brian,
It is strange that Honeywell international doesn't acknowledge
Windtronics as either a Standalone brand or endorsed brand.
Those are listed on the Honeywell International website: http://www.honeywell.com/sites/hipi/trade_licensing.htm
Anyway, would you buy a wind turbine from a compan
Brian,
It is strange that Honeywell international doesn't acknowledge
Windtronics as either a Standalone brand or endorsed brand.
Those are listed on the Honeywell International website: http://www.honeywell.com/sites/hipi/trade_licensing.htm
Would you buy a wind turbine from a company that c
The Honeywell turbine appears to be made by a company called
Windtronics, which is a division of Earthtronics. Earthtronics appears
to sell CFL light bulbs. I have talked to several people at Windtronics
who cannot answer any technical questions. True Value Hardware is
giving out brochures f
Hi All,
Has anyone seen this "Honeywell" turbine?
http://www.earthtronics.com/honeywell.aspx
Interesting what it says at the bottom of the page:
"The Honeywell Trademark is used under license from Honeywell International
Inc. Honeywell International Inc. makes no representation or warranties w
I usually keep in mind that the modules will degrade by 10% However, if you
are one of those wrenches promoting 3% DC Voltage Drops, maybe you should add
some more.
Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell: 707-321-2937
Office:
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