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electrical:solar:sizing [2022/01/26 19:48]
princess_fluffypants [Voltage] 		electrical:solar:sizing [2023/08/25 21:32]
princess_fluffypants [Voltage]
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 ==== calculators ==== ==== calculators ====
  
 +  * Unbound Solar [[https://unboundsolar.com/solar-information/offgrid-calculator|offgrid calculator]]
 +  * AltE [[https://www.altestore.com/store/calculators/off_grid_calculator/|offgrid calculator]]
   * [[https://www.batterystuff.com/kb/tools/calculator-sizing-a-battery-to-a-load.html|BatteryStuff 12v load calculator]]   * [[https://www.batterystuff.com/kb/tools/calculator-sizing-a-battery-to-a-load.html|BatteryStuff 12v load calculator]]
   * [[http://gpelectric.com/tools/GoPowerCalculator.htm?state=RvDiv|GoPower calculator]]   * [[http://gpelectric.com/tools/GoPowerCalculator.htm?state=RvDiv|GoPower calculator]]
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     * You have large, power-hungry appliances that can run natively off of 24v     * You have large, power-hungry appliances that can run natively off of 24v
       * Some [[food:refrigeration|DC refrigerators]] can run off of both 12v or 24v, and are slightly more efficient when running off of 24v       * Some [[food:refrigeration|DC refrigerators]] can run off of both 12v or 24v, and are slightly more efficient when running off of 24v
 +      * [[hvac:solar_ac|Off-grid Air Conditioning]] can be slightly more efficient with 24v native systems, and will allow smaller wires to be used.
     * You have a lot of long, large cable runs     * You have a lot of long, large cable runs
       * 24v doesn't have as much voltage drop as 12v over a similar distance, and can use smaller/cheaper cables.       * 24v doesn't have as much voltage drop as 12v over a similar distance, and can use smaller/cheaper cables.
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 ===== solar panel array ===== ===== solar panel array =====
  
-Pick a solar panel array output on battery bank capacity.  A common **rule of thumb for matching panels to battery bank** is that there should be **at least** 1 panel watt per amp-hour of nominal bank capacity.  +Pick a solar panel array output on daily power requirements and  battery bank capacity.  A common **rule of thumb for matching panels to battery bank** is that //at a minimum// there should be 1 panel watt per amp-hour of nominal bank capacity.  
  
 > "...the person draining their batteries to the 50% range regularly would do much better with a 2 watts to 1Ah ratio, or even 3 to 1." -- SternWake((http://www.cheaprvliving.com/forums/Thread-How-much-solar-do-I-need?pid=278438#pid278438)) > "...the person draining their batteries to the 50% range regularly would do much better with a 2 watts to 1Ah ratio, or even 3 to 1." -- SternWake((http://www.cheaprvliving.com/forums/Thread-How-much-solar-do-I-need?pid=278438#pid278438))
electrical/solar/sizing.txt ยท Last modified: 2023/08/31 19:54 by princess_fluffypants

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