HW $-9($draw system diagram, assumption and basic equation$)$

A closed, rigid tank of volume $0\mathrm{.}1m^3$ initially contains propane at an absolute pressure of $8$ bar $($State $1).$

The tank is externally heated and at the same time an electric resistor and a paddle wheel inside the tank are

switched on for a period of $10$ seconds. A current of $100$ A flows through the electric resistor across a

voltage difference of $12$ V and a torque of $150N-m$ is supplied when the paddle wheel rotates at $\frac{60}{}rpm.$

The refrigerant is at an absolute pressure of $12$ bar and a temperature of $50C($State $2$