Chapter 7, Problem 7.4P

2. If 0.17 kg/s of air are compressed isothermally from Pi = 96 kPaa and V, = 0.13 m/s to p2 = 620 kPaa, find the work, the change of entropy, and heat for: a) a nonflow process, and b) a steady flow process with V1 = 15 m/s and V2 = 60 %3D %3D m/s.

ygotins lo 6.69) By injecting liquid water into superheated steam. the desuperheater shown in Fig. P6.69 has a saturated vapor stream at its exit. Steady-state operating data are provided in the accompanying table. Stray heat transfer and all kinetic neand potential energy effects are negligible. (a) Locate states to 1, 2, and 3 on a sketch of the T-s diagram. (b) Determine the rate of entropy production within the de-superheater, K.Modelthe in kW/K. ideal as State p(MPa) T°C) ) v × 10³(m³/kg) u(kJ/kg) h(kJ/kg) s(kJ/kg · K) 1 38 1.0065 X 10-3 166.5 168.3 0.5658 1B 0.1308 320 sat. vap. Y2807.9 3069.5 6.8452 3 1.5 1.159 2519.7 2693.6 7.2233 Desuperheater bol Liquid बेे कत 60°C. Det heet ni water 3. Saturated fos vapor P6.4recom O lo lguons 2 Superheated- vapor honor m2 = 0.03 kg/s motava bogisins odt 1ol,nW ni

Thermodynamics There is a rigid tank initially with water in a critical state, which after a heat transfer process reaches a pressure of 1 psia. The surrounding temperature is 1540°F. Find the total entropy change. Please draw a scheme.

Thermodynamics need a cancellations of units

Pls solve acc

Solve please, should 100% sure of ans. Air enters a well-insulated turbine operating at steady state with a negligible velocity at 4 MPa and 300 oC, It exits the turbine at 100 kPa pressure at 100 oC. The diameter of the exit pipe is 60 cm. The velocity at exit is 90 m/s. a. What is the volumetric flow are at the exit? Express your result in units of m3/s. b. What is the molar flow rate at the exit? Assume that at the exit conditions, air may be considered to behave like an ideal gas. Express your results in units of mols/s c. What is the mas flow rate? Express your result in units of kg/s.

m3 1. if 10 kg/min of air are compressed isothermally fromp, = 96 kPa and V1 = 7.65 тin to p2 = 620 kPa, find the work, the change of entrophy and the heat for (a)nonflow т m process and b) a steady flow process with 1 = 15 and I2 = 60÷. S

4.54 kg mass of water vapor at 100kPa (abs) and an entropy of 8.0333 kJ/kg K; undergo a process at constant pressure to a state where the occupied volume is 1.62 m3/kg. It is requested: a. Plot t-V diagram b. Find the initial temperature (°C) c. Find the quality (%), moisture (%) and final internal energy (kJ)

1. A heat pump design creates a heating effect of 35 kW while using 15 kW of electrical power. wwww wwwwn wwwww w The thermal energy reservoirs are at 300 K and 250 K. www ww (a) Show the system sketch and label all the values given on it ww www u w w (b) Demonstrate the 1st law application for this system (c) Find entropy generation