Chapter 7, Problem 7.87P

Q 1: For a particular gas system, the internal energy is given by : U = 2.5 PV + C , where P: Presure , V: volume and C : constant, the sysytem is taken into cycle shown in fig.(Q1) below with three Processes, Calculate Q & W if the pressure is given by P= 105 + 10° (v-0.02)² ? 0.5 0.4 0.3 0.2 B A 0.1 001 002 003 V (m³) -> Fig. (Q1) P (MPa)►

GIVEN: Gas HAS CONSTANT MASS IDEAL GAS SPECIFIC HEAT RATIO OF GAS Y= 1.6 GAS CYCLE P^29 At 1: P1 = 2 BAR At 2 + 2 = 300° K : At 3: ASK: A) B) c) P2 V 2 P3 T2 = 12: 23: 31: T3 ISENTRO PIC REVERSIBLE VOLUME IS ISOTHERMAL EXPANSION CONSTANT T1 = 149.8 x 150⁰ K V₁ = √3 3 V₁ = 0.0005 m

Q 1: For a particular gas system, the internal energy is given by : U = 2.5 PV + C , where P: Presure , V: volume and C: constant, the sysytem is taken into cycle shown in fig.(Q1) below with three Processes, Calculate Q & W if the pressure is given by P= 105 + 10° (v-0.02)² ? 05 04 V (m') Fig. (Q1) 02: Arigid tank of (0.3 m) at 15.5 bar , if 90% of mass is liquid water, how much heat must be added before the tank becomes just full of the liquid? 03/ An ideal gas is changed from pl = 1bar, vl= 10m³ to p2 =10 bar , v2 = 1m², calculate Q & W for the follwing process: a- Isothermal process. b- adiabatic compression followed by cooling process at constant pressure. c- Heating at constant volume followed by cooling at constant pressure? Take Cp= (5/2)R & Cv=(3/2) R Q4: A tank having a volume of 0.85 m³ initially contains water as a two-phase liquid- vapor mixture at 260°C and a quality of 0.7. Saturated water vapor at 260°C is slowly withdrawn through a pressure-regulating valve at the top…