Problem 2 We want to store sufficientenergy in a 001 Fcapaci

Problem 2: We want to store sufficientenergy in a 0.01 Fcapacitor to supply 5 horsepower (hp) for one hour. To what voltage must the capacitor be charged? (Note: 1 hp is equivalent to 746 W). Does this seem to be a practical method for storing this amount of energy? Do you think that an electric automobile design based on capacitive energy storage is feasible

Solution

Available energy= power x time in sec

=5X746X60X60 =13428Kj

C=0.01F

Energy=0.5CV²

Voltage across capacitor=(2E/C)=51823V

Practically it is not advisable to store that much of energy.It requires huge amount of Di electric to store that much amount of energy with the calculated voltage.which is not economical and feeseble.

Capacitive storage is not advisable in automobile design ,it consumes lot of space,not economical ,

Technically qis proportional to voltage. So as the capacitor discharges voltage across capacitor come down linearly which is not in the case of a battery.