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food:refrigeration:power [2024/05/09 17:42] frater_secessus [battery bank capacity] |
food:refrigeration:power [2024/05/09 17:57] (current) frater_secessus [TL;DR] |
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===== TL;DR ===== | ===== TL;DR ===== | ||
- | * compressor fridges are a part-time load; as a rule of thumb we can assume the compressor will be running 1/3rd of the time. | + | * [[food: |
* they will consume a given number of Wh (Watt-hours) over a 24-hour period | * they will consume a given number of Wh (Watt-hours) over a 24-hour period | ||
- | * you must have at least enough charging capacity to replace | + | * you must have at least enough charging capacity to replace |
- | * and have enough bank to make it through periods where charging is absent | + | * and have enough |
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The battery bank capacity requirement is dependent on a few factors: | The battery bank capacity requirement is dependent on a few factors: | ||
- | * how deeply the chemistry can be discharged (~50% for lead, ~80% for LiFePO4) | + | * how deeply the chemistry can be discharged (~50% for [[electrical: |
* nominal voltage (12.0v for lead, 12.8v for LiFePO4) | * nominal voltage (12.0v for lead, 12.8v for LiFePO4) | ||
* days of " | * days of " |