Need 10kw Continuous Load Design Help

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  • Fran
    Junior Member
    • May 2017
    • 1

    #1

    Need 10kw Continuous Load Design Help

    Newbie here trying to gin up a diy system to supply continuous 10kw power to some equipment that runs runs almost 24/7.

    The questions following refer to 2 cases ... 110VAC inverter output or 220VAC inverter output.

    Since I get confused on all the marketing material throwing the word Watts around I'm asking for some kind soul to help me in component selection.

    When they advertise a 100 watt solar panel ... or 1000 watt inverter ... or charge controller ...
    It seems you may have to do a lot of digging to determine if they are talking about ...
    continuous load
    average load
    peak load
    power delivered to the load
    total power out... some of which may never make it to the load.
    etc ...

    So, for example, if the load requires 10kw continuously ... think a motor under constant load ... or some other 'black box" that is advertised as requiring 10kw continuous to operate... regardless of whatever may be in the black box ...
    1. How many watts of solar panels will be required to keep a battery bank charged to operate such a system ... considering average daily sunlight in Florida?
    2. What size Charge Controller will be needed?
    3. Ditto on the Inverter?
    4. And what would be a suggested battery bank ... how many batteries, how much voltage, etc...
    5. I'm guessing typical 12 volt deep cycle rechargeable batteries may be the most economical solution ... but please, educate me.
    Thanks for any help.
    ​​​​​​​
  • peakbagger
    Solar Fanatic
    • Jun 2010
    • 1566

    #2
    Buy or download an older version of Solar Power Your home for Dummies, read it to understand the basics and then ask questions.

    Sounds like a small hobby coin miner. A 10 KW continuous load for 24 hours is a 240 KWhr daily load. Solar panels are rated for ideal sun exposure that rarely happens, think of it as best case at or around noon on blue sky sunny day. Its all downhill from there including all night, so you will need a lot of panels, far bigger than a typical house system. Now what happens if you have a couple of days of no sun?. Can you just shut down the load or do you need it to run? You need to decide how many days of clouds you can live with as the more days you need to cover, the bigger the battery bank. Its likely you are looking at a 48 volt system or getting into a Lithium chemistry solution. Its not going to be cheap, plan on hiring a professional engineer to design it.

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