The total daily energy consumption of the DC appliances is 400 [Wh⋅d−1] and the total daily energy consumption of the AC appliances is 450 [Wh⋅d−1]. assuming an inverter efficiency equal to 90%, what is the total daily energy demand on the PV panel side? Give the answer in [Wh⋅d−1]

what is 400/.9 + 450 ?

No it is 450/0.9+400

To calculate the total daily energy demand on the PV panel side, we need to consider the energy consumption of both the DC and AC appliances, taking into account the efficiency of the inverter.

First, let's calculate the energy consumption of the AC appliances on the PV panel side. Since the inverter efficiency is given as 90%, we can divide the total daily energy consumption of the AC appliances (450 Wh/d) by the inverter efficiency (90% or 0.9):

Energy consumption of AC appliances on the PV panel side = 450 Wh/d / 0.9 = 500 Wh/d

Next, we need to calculate the energy consumption of the DC appliances, which already operates on the PV panel side:

Energy consumption of DC appliances on the PV panel side = 400 Wh/d

Finally, we can calculate the total daily energy demand on the PV panel side by adding the energy consumption of the AC and DC appliances:

Total daily energy demand on the PV panel side = Energy consumption of AC appliances on the PV panel side + Energy consumption of DC appliances on the PV panel side
= 500 Wh/d + 400 Wh/d
= 900 Wh/d

Therefore, the total daily energy demand on the PV panel side is 900 Wh/d.