Problem $2$: An ideal Rankine cycle operates at $5$ MPa boiler pressure with an outlet temperature of $450C$ and a condenser pressure of $30$ kPa $.$ Determine the thermal efficiency of the cycle.

$\backslash$table$[[P_1(kPa),V_1(\frac{m^3}{k}g),h_1(k\frac{J}{k}g),h_4(k\frac{J}{k}g)$