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1.5 kW Photovoltaic Panels: Connecting 240W & 180W PV Panels to Heat 120L Tank with TRACER-4210RN

vegeta11 36363 6
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 15473045
    vegeta11
    Level 2  
    Hello, I am new and I would like to use PV panels to heat water in a 120l tank. I have 3 panels 240W and 4 180W as in the link. http://www.0800sparks.com/SolarPower/pdfs/bp-essex-solar-power-3220t.pdf
    At the moment I have everything connected in parallel to the TRACER-4210RN 12V/24V 40A MPPT CHARGING CONTROLLER and a 500ah battery. Please give me some advice on how to go about it. Regards
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  • #3 15473213
    Rzuuf
    Level 43  
    Storing "free" 1kWh in the battery costs several times more than buying 1kWh from Energetyka.
    During the year, the solar collector "receives" SEVERAL TIMES MORE energy from the sun than a photovoltaic panel with the same area. And both give the most energy just when it is least needed: on a sunny July day.
    12V/500Ah battery accumulates energy of 6kWh (i.e. 21.6 MJ), the same gives combustion 1.5 kg of wood . Instead of building a photovoltaic plant, collect branches lying on the ground when you go to the park for a walk ...
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  • #4 15473270
    Xantix
    Level 41  
    Rzuuf wrote:
    both give the most energy just when it is least needed: on a sunny July day.

    Not true. In Polish conditions, the PV panel produces the most energy in May-June (air temperatures are lower and the panel has higher efficiency).
    Rzuuf wrote:
    just when you least need it:

    I also need hot tap water on a sunny July day.
  • #5 15473325
    PM2016
    Level 10  
    There is already a ready solution, e.g. http://elektronix.pl/inwpv.htm
    Advantage, you connect one heater with a power of 1 to 4KW for 230V voltage. In other systems, the controllers, you have to replace the standard 230V heater with a few from 3 to 7 with non-standard voltages.
    Simple installation - diagram.
    Attachments:
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  • #6 15473330
    Rzuuf
    Level 43  
    Xantix wrote:
    ... produces the most energy in May-June ...

    You're right, indeed June is "privileged", but May and July often "go head to head", and even August can be sunny. Statistics are here: http://www.andretti.pl/wxsolardetail.php?year=2015, for other years change the last value in the link, e.g. to 2014, July average was better than June average.
    OK, I correct my statement: "... on a sunny summer day."
  • #7 15473343
    kortyleski
    Level 43  
    If you want to heat water, it's actually better to add a collector, even a classic flat one, and heat it. 1.5 kW from 2 sq m is the norm in July. A photovoltaic to the inverter and to the solar. Come back in winter when the sun goes out
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Topic summary

The discussion revolves around using photovoltaic (PV) panels to heat water in a 120L tank. The user has three 240W panels and four 180W panels connected in parallel to a TRACER-4210RN MPPT charging controller and a 500Ah battery. Responses highlight the efficiency of solar collectors compared to PV panels for heating water, especially during summer months. Some participants suggest integrating a solar collector for better performance, while others provide links to existing solutions and emphasize the importance of seasonal energy production variations. The conversation also touches on the cost-effectiveness of energy storage and the potential for using alternative heating methods.
Summary generated by the language model.
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