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--- food:refrigeration:power [2024/05/09 17:33]
frater_secessus [TL;DR]
+++ food:refrigeration:power [2024/05/09 17:57] (current)
frater_secessus [TL;DR]
@@ Line 6: / Line 6: @@
 ===== 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:refrigeration#compressor_refrigeration|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.
   * 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 at least that amount of Wh
+  * you must have at least enough charging capacity to replace those Wh
-  * and have enough bank to make it through periods where charging is absent
+  * and have enough battery bank capacity to make it through periods where charging is absent
@@ Line 23: / Line 23: @@
 ===== battery bank capacity =====
-The battery bank capacity 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:12v:deep_cycle_battery|lead]], ~80% for [[electrical:12v:drop-in_lifepo4|LiFePO4]])
   * nominal voltage (12.0v for lead, 12.8v for LiFePO4)
   * days of "autonomy" (discussed separately)
@@ Line 83: / Line 83: @@
 ==== charging from solar ====
-Charging from [[electrical:solar:gentle_intro|solar]] is predictable((on average)) if one knows where/when one will be camping.  Because December has the lowest insolation in the Northern hemisphere we base our panel requirements on that month.  If you are not full-timing then use the month closest to winter solstice.
+Charging from [[electrical:solar:gentle_intro|solar]] is predictable //on average// if one knows where/when one will be camping.  Because December has the lowest insolation in the Northern hemisphere we base our panel requirements on that month.  If you are not full-timing then use the month closest to winter solstice.
-You will need to [[electrical:solar:pvwatts|calculate how much sun]] (hours of Full Sun Equivalent, aka "kWh/day") is available in your actual wintering spot, but we will use Belle Fourche, South Dakota since it is the geographical center of CONUS.
+You will need to [[electrical:solar:pvwatts|use PVwatts or similar]] to calculate how much sun (hours of Full Sun Equivalent, aka "kWh/day") is available in your actual wintering spot, but we will use Belle Fourche, South Dakota since it is the geographical center of CONUS.
 December in Belle Fourche has only 1.52 hours of FSE.  It would take ~375w of panel((flat-mounted, MPPT controller, LFP bank)) to replace 480Wh year-around. (480Wh / 1.52 hours of FSE / 0.85 overall efficiency)
@@ Line 107: / Line 107: @@
     Average	1378
+table based on the PVwatts link above
 ==== charging from multiple sources ====

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