Question 1: 10 kg of ethylene is contained within a piston-cylinder device at 1.536 MPa and -13 °C (State 1). The ethylene is cooled at constant pressure until it becomes a saturated liquid (State 2). Utilizing the generalized charts found on E-Class, determine the heat loss from the system: Ethylene: Pcr = 5.04 MPa Tcr = 282.4 K, Cpo 1.548 kJ/kg * K R = 0.2964 kJ/kg * K