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food:refrigeration:power [2024/05/09 17:47] frater_secessus [TL;DR] |
food:refrigeration:power [2024/05/09 17:55] frater_secessus [power and duty cycle] |
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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 ===== | ||
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 " |