Power calculations

Discussion in 'Power cuts' started by Zuna, 23 Apr 2013.

  1. Zuna

    Zuna

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    Hey Guys

    how would i calculated how much power my tanks is using.
    i need to find this out as i want to go with solar power for my tank
     
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  3. renie

    renie

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    Power calculation

    If you have the boxes of all the equipment, read on them the Watts they say the things are rated at, add all and add multiply by two to be safe. Otherwise go to the petshop and get these values from the boxes there. For axample the heater is 150 Watts, sump pump 0.5 Watts and so forth. Put 150+ 0.5+++ adds to say 257 Watts now x2 gives 314 Watts so if you put up a 500 Watt solar panel it should suffice.
     
  4. Visser

    Visser MASA Contributor

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    I use a plug in power meter. (connects between my wall plug & tank. Gives almost all type of power meter readings. Watts/h, Watts, units used, daily cost, monthly cost, yearly cost & lots more.) Costs about R350 from any builders warehouse...
     
  5. Mewik

    Mewik

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    It is a little bit more complicated than that. First you need to work out your usage over 24hrs, then work out your peak hrs of sunlight and yeild per panel. If your tank uses 500w you will use 285w panels, which are big, so you then work out how many hrs of 100% yeild they get, probably around 4hrs a day on short days, so you could end up needing more than 8 panels. Its all very complicated but your panels won't get near peak rating most of the day so at peak time you need to be catching and storing 5x the usage to make up for night time etc when the panels produce nothing. That power needs to be stored in batteries, which cost a lot and are dangerous to keep indoors.

    It is possible to run a tank on solar its just expensive and will take up alot of space.

    What size tank are you even looking at here?
     
  6. Zuna

    Zuna Thread Starter

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    great stuff thanks guys
     
  7. Zuna

    Zuna Thread Starter

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    its a nano 600x600
     
  8. Zuna

    Zuna Thread Starter

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    so ill probably be needing more then this
    2
    235W PV MODULES

    4
    105Ah BATTERIES

    1
    20A MPPT REGULATOR
    1
    300W PSW INVERTER 24V

     
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