[RE-wrenches] SunBandit Solar PV Hot Water

[jay]

Does anyone know how they actually operate?

I”m thinking they are using a variable AC voltage output from the micros to operate at MPP  matching the resistance of the heating element?
IE more PV watts, higher AC voltage, more load.  Lower PV watts, lower AC voltage, less load?

Thanks,

jay

Peltz Power





> On Nov 11, 2017, at 9:32 AM, Dana <dana at solarwork.com> wrote:
> 
> I installed one SunBandit solar hot water system about 1.5 years ago and the client is still thrilled with the performance. It is a well-constructed system. My only consideration is it arrives in one very heavy crate that is a monster to handle & uncrate. The tank is a beast, very heavy to move around, but well-constructed.
> I would give this design & system, both 5 stars & 2 thumbs up.
> 
> After many years of solar thermal glycol installations there are many up sides to this product. 
> No plumbing - no glycol.
> No excess heat issues to address during late summer.
> Once the tank is hot the PV just idles.
> No power out issues - steam buildup.
> No pumps to maintain - replace.
> Everything is very heavy duty constructed almost to the point of too heavy duty.
> 
> I was sufficiently impressed with the system to consider one on my current home project but between solar thermal direct injection to the slabs and 6.4 KW of excess PV in the summer, I am doing a hybrid system. Once the battery bank is full, shunting the excess PV to a 240-volt electrode as needed and & in the winter using excess PV production as available & solar thermal once the slabs are sufficiently warmed. I am using the SOLARLOGIC controller to address the control of the solar thermal decisions.
> http://www.solarlogicllc.com/products/slic-solarlogic-integrated-controller/
> 
> ----------------------------------------------------------------------------
> Dana Orzel                       Great Solar Works, Inc. 
> 208.721.7003                       dana at solarwork.com
> Idaho Contractor - # 028765          Idaho PV # 028374
> NABCEP # 051112-136                       www.solarwork.biz
> "Responsible Technologies for Responsible People since 1988"  
>  Please consider the environment before printing this email.
> 
> 
> -----Original Message-----
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Kirpal
> Sent: Saturday, November 11, 2017 9:56 AM
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Subject: [RE-wrenches] SunBandit Solar PV Hot Water
> 
> Hi Folks!!  Wanted to collect any feed back from anyone who has used the SunBandit Solar hot water systems.  Working well?  Not working well?  I just installed a system on my home and of course the winter sun is scarce so it may be a while before I get to fully asses its capabilities.  I am thinking of offering them to our customers but wanted to see if anyone had a track record on them before I dive deep.
> Thanks!
> 
> 
> Sunny Regards,
> Kirpal Khalsa
> Oregon LRT#25
> NABCEP Certified PV Installation Professional Oregon Solarworks LLC www.oregonsolarworks.com
> 541-299-0402
> 
>