Air enters an adiabatic compressor at 500K. The compression ratio is 5. Assume that the air behaves as an ideal gas and the process is reversible(y = C,/C, = 7/5) Calculate the exit temperature of the gas. %3D

Thermal systems problem: Assume that nitrogen is available in a storage tank at 2 MPa and 210 K. On the following chart, show the path for the following scenarios. a) An expansion valve is connected to this tank that drops the fluid (i.e., nitrogen) pressure at its outlet to one atmosphere.   b) A compressor is connected to this tank that raises the fluid pressure at its outlet to 10 MPa.   c) A turbine is connected to this tank that drops the fluid pressure at its outlet to one atmospheric pressure. d) A heat exchanger is connected to this tank that raises the fluid temperature to 330K at its outlet. e) A heat exchanger is connected to this tank that drops the fluid temperature to 135K at its outlet.   f) Show the process for the fluid to change its state from 2 MPa and 210 K to 14 MPa and 240 K.  Identify the required equipment. g) If a coolant at 150 K is available, is it possible to change the state of nitrogen from 2 MPa and 210 K to saturated liquid at atmospheric pressure?  If…

A horizontal steam pipe (60 mm. OD) carries high pressure steam at 230℃ . Wind flows past this pipe at 1 m/s velocity. The ambient temperature is 32℃. Which mode(s) of convection should we consider here? Calculate the total rate of heat loss per m. length of the pipe.

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[1] Repeat Example 7.10 (pages 288-289) but with the following exceptions: water is discharged at 9,000 kPa, and n=0.8. Calculate the work of the pump and AT using steam tables and equation 7.25

Separate streams of air and water flow through the compressor and heat exchanger arrangement shown below. Steady-state operating data is provided in the figure. Heat transfer with the environment can be neglected, as can all potential and kinetic energy effects. Air is modeled as an ideal gas. Determine: (a) the total power required by both compressors, in kW. (b) the mass flow rate of the water, in kg / s.

Air at 150 kPa and 25°C is transported through a 2-inch Schedule 40 commercial steel pipe. Consider that the air behaves as an ideal gas, that the flow is adiabatic and that the Mach number under these conditions of pressure and temperature is 0.35. Calculate the length of the pipe when the air pressure and temperature decrease to 54.375 kPa and -10.6°C.

You are scaling up a sparged stirred tank bioreactor from 10 L to 10,000 L. The volumetric O2 transfer coefficient kla can be estimated using the following empirical correlation: P. 0.4 6, kla = k (v3)0.5 N0.5 where k = empirical constant Pg = power requirement in gassed bioreactor (kW) V, = bioreactor volume (m³) Vs = superficial gas exit speed (m²/min) N = rotational speed of the agitator (rad/min) %3D

The work for irreversible compression of an ideal gas in a piston-cylinder system is the work for reversible compression to the same final pressure. a) higher than b) lower than c) the same as d) We need more information