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electrical:solar:sizing [2019/02/08 13:03]
frater_secessus [maxxed system] 		electrical:solar:sizing [2020/01/07 21:16]
frater_secessus [Sizing a solar installation]
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 Sizing **residential off-grid solar configurations** is relatively easy: calculate power needs in the worst case scenario (December in a particular geographical area)((https://web.archive.org/web/20110906013732/http://www.solarpowerforum.net/forumVB/solar-energy/1793-basic-off-grid-solar-design.html)) and pay for it.  Sizing **residential off-grid solar configurations** is relatively easy: calculate power needs in the worst case scenario (December in a particular geographical area)((https://web.archive.org/web/20110906013732/http://www.solarpowerforum.net/forumVB/solar-energy/1793-basic-off-grid-solar-design.html)) and pay for it. 
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 +Campervan solar configurations have a more variables:
  
   - worst case scenario [[electrical:12v:loads|loads]] (the max loads you will apply in any 24hr period((or at any given time, if you plan to run heavy loads)))   - worst case scenario [[electrical:12v:loads|loads]] (the max loads you will apply in any 24hr period((or at any given time, if you plan to run heavy loads)))
-  - worst case scenario sunlight, usually December in your geographical area due to shortest daylight hours+  - worst case scenario sunlight, usually December in your geographical area due to shortest daylight hours, but also affected by tree canopies or other forms of shading
   - days of reserve (ie with no solar charging) you want   - days of reserve (ie with no solar charging) you want
   - whether or not you have access to other forms of charging: [[electrical:shore_power|shore power]], [[electrical:12v:alternator|alternator]], [[electrical:generator|generator]]   - whether or not you have access to other forms of charging: [[electrical:shore_power|shore power]], [[electrical:12v:alternator|alternator]], [[electrical:generator|generator]]
   - These factors will tell you size of the system needed.  If the system you need will not physically fit on/in your vehicle, you will have to take [[electrical:solar:sizing#maxxed_system|a different approach]].   - These factors will tell you size of the system needed.  If the system you need will not physically fit on/in your vehicle, you will have to take [[electrical:solar:sizing#maxxed_system|a different approach]].
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 **Example:**  You need 100AH x 1 day, so your bank will be 200AH cycled 50% each day. \\  **Example:**  You need 100AH x 1 day, so your bank will be 200AH cycled 50% each day. \\ 
-**Example:**  [[electrical:12v:lifepo4_batteries_thread|LiFePO4]] can be drained down to 80%-90% DoD so you would need only 110AH of rated capacity with that chemistry. 120AH if you are conservative.+**Example:**  [[electrical:12v:deep_cycle_battery#lithium_chemistries|LiFePO4]] can be drained down to 80%-90% DoD so you would need only 110AH of rated capacity with that chemistry. 120AH if you are conservative.
  
  
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 Solar power often works best when paired with another power source.  This is because the first half and second half of [[electrical:12v:charging|smart charging]] have different time/power ramifications Solar power often works best when paired with another power source.  This is because the first half and second half of [[electrical:12v:charging|smart charging]] have different time/power ramifications
  
-  - **high current / short duration** during Bulk <-- [[electrical:generator|generators]], [[electrical:shore_power|shore power]] [[electrical:converter|converters]] and [[electrical:12v:alternator|alternator]] charging does this best+  - **high current / short duration** during Bulk <-- [[electrical:generator|generator]], [[electrical:shore_power|shore power]] [[electrical:converter|converter]] and [[electrical:12v:alternator|alternator]] charging do this best
   - **low current / long duration**  once Absorption gets underway, and during Float <-- solar does this best   - **low current / long duration**  once Absorption gets underway, and during Float <-- solar does this best
  
electrical/solar/sizing.txt ยท Last modified: 2023/08/31 19:54 by princess_fluffypants

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