Answer:
Specific volume = 8.16 × 10⁻⁴ m³/kg
Internal energy = 78.85 KJ/kg
Explanation:
At the conditions provided, refrigerant-134a (1,1,2,2 - Tetrafluoroethane) is a very compressed liquid. We know this because its boiling point is -26.3°C (So, at 20°C, it's a liquid) and at 730 KPa, this very high pressure will definitely compress it.
In the steam tables, there are no outright readings for super compressed liquids, but the behaviour of a saturated liquid at those stated conditions approximates what we want. So, checking under saturated liquid, the specific volume was obtained to be 0.000816 m³/kg and the internal energy, 78.85 KJ/kg.
