[RE-wrenches] PV water pumping

[jay peltz]

HI Allan,

I"ve got to disagree  on the tracker part.
The cost to buy and ship a tracker to some far off land, I think if you do the math, modules are cheaper and more reliable.

jay

peltz power

On Feb 10, 2011, at 5:20 PM, Allan Sindelar wrote:

> Just one note - if batteries fail - no, make that when batteries fail - the system is dead. If a tracker fails, the system continues to operate at a reduced output. So the risk is reduced. I, too, would prefer a fixed array, but a tracker is a concession to their gpd request.
> 
> In this application - fairly low latitude, warm climate - a Zomeworks passive tracker ought to be a good choice. Pretty reliable, no electronics, and if it does fail ropes can face it to the sky.
> Allan
> 
> Allan Sindelar
> Allan at positiveenergysolar.com
> NABCEP Certified Photovoltaic Installer
> EE98J Journeyman Electrician
> Positive Energy, Inc.
> 3201 Calle Marie
> Santa Fe, New Mexico 87507
> 505 424-1112
> www.positiveenergysolar.com
> 
> On 2/10/2011 4:57 PM, Jeff Oldham wrote:
>> 
>> I strongly agree with the "no batteries" approach. All issues mentioned come to fruit and in far too few years those batteries will be abused to toast and now the system will sit for a very long time if not forever and no water for the community. Your best options are to live with what you can get PV-direct (I'm even hesitant to use trackers in these applications) or drill additional wells nearby if you cannot stack pumps in the well with minimal drop pipe sizing or larger boreholes.
>>  
>> On a side note, I'm always hearing from remote folks that they cannot get distilled water and are forced to use whatever and those that can pay through the nose for tiny red bottles of it. I point out that it falls for free from the sky whenever it rains - collect it!
>> 
>> 
>> 
>> From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative SOLutions
>> 
>> 
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