enches.org] On
Behalf Of Jeff Oldham
Sent: Thursday, May 07, 2015 12:08 PM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] Pumping
I would look at the AC options. The money saved over the DC or AC\DC pumps
may well purchase the extra PV required for the increase in energy draw.
Co
I would look at the AC options. The money saved over the DC or AC\DC pumps may
well purchase the extra PV required for the increase in energy draw. Come
winter time that larger array with a much lower pumping load will be most
welcome for any OTG system further increasing the value of this optio
Dear Mac,
I do not believe you will find an efficient AC option because you only need a low pumping rate, and that is only efficiently served by a positive displacement pump. I would look further into the field of maintenance-free brushless helical rotor submersibles. These include Grund
My current pump guru is Brian @ AEE phone - 805.242.7856 & they sell Grundfoss,
Aquatec, SHURflo, Franklin, & Dankoff.
Brian is very well versed on all of the options.
Dana Orzel
Great Solar Works, Inc - NABCEP #
Hi Mac,
It has been a while since I kept up with pumping applications; however,
the last time I looked, using electronically commutated motors (ECM)
offered significant energy savings over other types. My understand is
that the voltage tolerances must be tightly controlled to allow the ECM
t
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