Scaling motor power linearly

Scaling the power of motor deployed in centrifuge linearly with respect to mass flowrate.
QSD-Group · Dec 11, 2023 · 093ed31 · 093ed31
1 parent 6ee1c36
commit 093ed31
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/qsdsan/sanunits/_sludge_treatment.py b/qsdsan/sanunits/_sludge_treatment.py
@@ -839,7 +839,8 @@ def _cost(self):
 
         base_power_motor = 55 # in kW
         # THIS IS NOT THE CORRECT EXPRESSION TO SCALE UP POWER OF CENTRIFUGE
-        motor_power = D['Number of centrifuges']*base_power_motor*(thickener_mass_flow/base_mass_flow_centrifuge)
+        motor_power = base_power_motor*(thickener_mass_flow/base_mass_flow_centrifuge)
+        total_motor_power = D['Number of centrifuges']*motor_power
 
         # Pump (construction and maintainance)
         pumps = self.pumps
@@ -875,7 +876,7 @@ def _cost(self):
 
         pumping = pumping*D['Number of pumps']
         self.power_utility.rate += pumping
-        self.power_utility.rate += motor_power
+        self.power_utility.rate += total_motor_power
 #%% Incinerator
 
 class Incinerator(SanUnit):