ers a heat exchanger operating at steady state at 5 bar with a specific enthalpy of 2298 kJ/kg and exits at the same sa saturated liquid. The steam mass flow rate is 1.29 kg/min. stream of air with a mass flow rate of 48.3 kg/min enters at 38.4 °C and exits at 76.7 °C. as model with c, = 1.005 kJ/kg.K can be assumed for air. Kinetic and potential energy effects are negligible. ne the quality of the entering steam:

CO2 enters a compressor at 1 bar, 34 ° C, with a velocity of 28.4 m / s through a 150 mm diameter pipe located 7 m below the discharge line and exits at 8 bar and 265 ° C through a 120 mm diameter pipe. The heat losses are 4.5 kJ / kg. It is asked to calculate:Data: CP = 0.85 kJ / kg. °C Molar mass = 44 Local electricity tariff = S /. 0.2780 / kWh a) The velocity of the gas at the outlet, in m / sb) The mechanical power (shaft), if the compression efficiency is 78%, in kWc) If the compressor must deliver 15,000 m3 of compressed air per day, continuously, what consumption (kWh) and what monthly cost (S /.) Does this compressor originate, if the efficiency of its motor is 80%?

Step by step solution for mass flow, volumetric flow, and velocity please thank youu

Air enters a diffuser operating at steady state at 540°R, 15 Ilbf/in.?, with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The ratio of the exit area to the inlet area is 6. Assuming the ideal gas model for the air and ignoring heat transfer, determine the temperature, in °R, and pressure, in Ibf/in.?, at the exit.

8. There are 2.30 kg/min. of steam undergoing an isothermal process from 25.5 bar, 317 C to 6.3 bar. Determine (a) AS (b) W for nonflow, and (d) W for steady flow with P = 0, K =42kJ/min. (1 bar = 100 kPa) %3D

Please solve by hand and correct answer please

Chapter 6 9.

Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.7 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30°C and exits at 60°C. The ideal gas model with c, = 1.005 kJ/kg-K can be assumed for air. Kinetic and potential energy effects are negligible. Determine the temperature of the entering steam, in °C. For the overall heat exchanger as the control volume, what is the rate of heat transfer, in kW.

6.14

Figure shows data for a portion of the ducting in ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 bar throughout. Assuming the ideal gas model for air with Cp  = 1 kJ/kg · K. and ignoring kinetic and potential energy effects, determine: (a) the temperature of the air at the exit, in °C. (b) the exit diameter, in m. (c) the rate of entropy production within the duct, in kJ/min.