Differences

This shows you the differences between two versions of the page.

--- electrical:solar:nonessential [2020/07/08 14:58]
frater_secessus [LVD + timer - eternal Absorption]
+++ electrical:solar:nonessential [2023/10/18 18:56]
frater_secessus [when to run opportunity loads]
@@ Line 19: / Line 19: @@
 ===== when to run opportunity loads =====
-**The best time to run non-essential loads is when there is surplus current** over what battery charging needs.  This means **during Float, or after current has started dropping off in Absorption**.  For [[electrical:12v:deep_cycle_battery#lithium_chemistries|LiFePO4]] there is excess power any time after the bank has reached the intended charge state.
+**The best time to run non-essential loads is when there is surplus current** over what battery charging needs.  With lead this means **during Float, or after current has started dropping off in Absorption**.  There is a little more wiggle room with [[electrical:12v:deep_cycle_battery#lithium_chemistries|LiFePO4]];  the loads can be run with no net effect on the system when
-Opportunity loads should not be applied during [[electrical:12v:charging|Bulk stage]] since Bulk, by definition, means the battery is taking all the available current.((assuming no charging limit has been configured in the [[electrical:solar:charge_controller|charge controller]]))
+  * any time after the bank has reached the intended charge state
+  * or any time the bank can be projected to carry the opportunity load //and still hit the intended charge state by sundown//.  Exception:  Lithium setups with PWM controllers solar charge controllers will make [[electrical:solar:pwm_tweaking|most power]] when bank voltage is highest.  So waiting for Float or Absorption to run opportunity loads will mean the solar can make more Wh per day.
@@ Line 72: / Line 73: @@
 In this approach the LVD is set just below Vfloat as above, but activation of the loads is delayed by some amount of time.  Observation of the system during charging will suggest how long it normally takes takes charging amperage to drop off (ie, when the system has surplus current).
-Suggested delay for conservative opportunity loading == the time from [passing Vlvr setpoint during Bulk] to [completed charging].((settling to Float)).  This delay might be 2-3hours.
+Suggested delay for conservative opportunity loading == the time from [passing Vlvr setpoint during Bulk] to [completed charging].((settling to Float)).  This delay might be 2-5hours.
@@ Line 100: / Line 101: @@
   * [[hvac:dehumidifier|dehumidification]]
   * [[electrical:12v:laptop|laptop]] and phone charging
-  * rice cooker((http://www.cheaprvliving.com/forums/Thread-How-much-solar-do-I-need?pid=141508#pid141508))
+  * [[food:cooking:excess_power|cooking with small appliances]]

RV and vandwellers wiki

User Tools

Site Tools

Differences

Page Tools