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electrical:solar:sizing [2023/06/16 12:29]
frater_secessus [solar panel array] 		electrical:solar:sizing [2024/07/16 10:58] (current)
frater_secessus [your reserve needs]
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 ===== your reserve needs ===== ===== your reserve needs =====
 +
 +[see also [[electrical:autonomy|days of autonomy]]]
  
 > ...one that really [effed] with me was running out of power or spending a few days in the dark cause the weather is bad. -- hellexual((https://www.reddit.com/r/vandwellers/comments/er4gf7/whered_you_get_your_van/ff1i66p/)) > ...one that really [effed] with me was running out of power or spending a few days in the dark cause the weather is bad. -- hellexual((https://www.reddit.com/r/vandwellers/comments/er4gf7/whered_you_get_your_van/ff1i66p/))
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 Solar power is highly dependent on local conditions like weather, season, and latitude.  One cannot assume getting a full charge every day in every condition. Solar power is highly dependent on local conditions like weather, season, and latitude.  One cannot assume getting a full charge every day in every condition.
  
-To account for this decide how many reserve days of power((https://duckduckgo.com/?q=days+of+autonomy&t=ffab&ia=web)) you need if there is little [[https://www.wholesalesolar.com/solar-information/sun-hours-us-map|solar power available]].  You may need few in desert regions and many more in the Pacific Northwest.  Long stretches of little solar charging may necessitate +To account for this decide how many reserve days of power(("days of autonomy")) you need if there is little [[https://www.wholesalesolar.com/solar-information/sun-hours-us-map|solar power available]].  You may need few in desert regions and many more in the Pacific Northwest.  Long stretches of little solar charging may necessitate 
 [[electrical:solar:rationing|rationing solar power]]. [[electrical:solar:rationing|rationing solar power]].
  
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       * Inversion from 24vdc to 110vac is more efficient than inversion from 12vdc.       * Inversion from 24vdc to 110vac is more efficient than inversion from 12vdc.
     * 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]] and induction cooktops 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.
electrical/solar/sizing.1686932948.txt.gz · Last modified: 2023/06/16 12:29 by frater_secessus

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