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food:refrigeration:power [2024/05/09 17:55] frater_secessus [power and duty cycle] |
food:refrigeration:power [2024/05/09 17:57] frater_secessus [TL;DR] |
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* [[food: | * [[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 battery bank capacity to make it through periods where charging is absent | * and have enough battery bank capacity to make it through periods where charging is absent | ||
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60w x 0.33 duty cycle x 24 hours = **480Wh** required each day to run the fridge. | 60w x 0.33 duty cycle x 24 hours = **480Wh** required each day to run the fridge. | ||
- | ==== why think about it 24hr terms? ==== | ||
- | |||
- | * offgrid power consumption is often considered in terms of daily cycles | ||
- | * solar power occurs in daily cycles | ||
- | * overlanders and others who travel often (and for whom alternator charging is practical) think of driving in hours per day | ||
===== battery bank capacity ===== | ===== battery bank capacity ===== | ||