Question

Water is heated in a mixing chamber by mixing it with hot water coming from a...

Water is heated in a mixing chamber by mixing it with hot water coming from a heater. The mixing chamber loses heat to the surroundings at a rate of 5 kW. The hot water enters the mixing chamber at a rate of 1 kg/s.

The mixed water leaves the chamber fully mixed.

  • - The cold water enters the mixing chamber at 200 kPa and 20°C at a velocity of 3 m/s

  • - The hot water enters at a pressure of 100 kPa and 150°C at a velocity of 2 m/s

  • - The surroundings temperature is 10°C

    The mixture leaves the chamber at 150 kPa and 70°C at a velocity of 5 m/s.
    What is the mass flow rate of the cold water and the rate of entropy generation in this process?

Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a hot water ar 80°C is mixed with cold water at 20°C in a mixing chamber...
a hot water ar 80°C is mixed with cold water at 20°C in a mixing chamber operating under adiabotic conditions. Flow rate of the cold water is 15.0 kg/s. The outlet stream is warm water at 45°C and 100 kPa. Estimate the flow rate of the hot water.
Water at 80°C enters a mixing chamber through line A, with a mass flow of 0.48...
Water at 80°C enters a mixing chamber through line A, with a mass flow of 0.48 kg / s. there it is mixed with another stream of water at 20°C, which flows through line B. If you want the mixture to leave the mixing chamber at 40°C (through line C), determine if all the streams are at 250 kPa , a) The volumetric expenditure (m ^ 3 / s) of the water circulating through pipe 2. b) The mass consumption...
In an adiabatic mixing chamber, 10 kg/s of water at 200 kPa and 30 C are...
In an adiabatic mixing chamber, 10 kg/s of water at 200 kPa and 30 C are mixed with saturated steam (x = 100%) at 200 kPa to produce saturated liquid water at 200 kPa.   Determine the irreversibility for the process. Answer: 391.8 kW (Engineering Thermodynamics)
Cold water leading to a shower enters a well-insulated, thin-walled, double-pipe, counterflow heat exchanger at 10C...
Cold water leading to a shower enters a well-insulated, thin-walled, double-pipe, counterflow heat exchanger at 10C at a rate of 1.15kg/s and is heated to 70C by hot water that enters at 85C at a rate of 1.6kg/s. Use data from the tables to Determine the rate of entropy generation in the heat exchanger. Answer in kW/K.
Mixture of saturated liquid-vapor water enters a compressor with mass flow rate of 2 kg/s, velocity...
Mixture of saturated liquid-vapor water enters a compressor with mass flow rate of 2 kg/s, velocity of 150 m/s, pressure of 10 kpa and quality of 0.85. The substance leaves the compressor with the velocity of 40 m/s at 7 MPa and 450°C. The heat loss from the compressor is 200 kW. Neglecting the changes in potential energy, determine the compressor required power.
Refrigerant 134a enters a tube at a rate of 0.07 kg/s as saturated liquid at 70...
Refrigerant 134a enters a tube at a rate of 0.07 kg/s as saturated liquid at 70 C and leaves the tube as saturated liquid as well at -8 C. It loses 10 kW of heat to the surroundings in the process. If the surroundings are at a temperature 10 C, find the total entropy generation in this process. Assume steady conditions
An industrial facility needs a flow of 100 gpm of hot water at 180°F, 50 psia....
An industrial facility needs a flow of 100 gpm of hot water at 180°F, 50 psia. Two designs are being considered to make the hot water. In Design 1, the hot water is produced by injecting steam into an insulated mixing chamber through which the water passes. The water enters the chamber at 50°F, 50 psia. Steam is injected into the chamber at 325°F, 50 psia. The hot water leaves at the required flow rate and temperature. For this system...
A steam turbine has an inlet of 3 kg/s water at 1.2 MPa, 500°C with velocity...
A steam turbine has an inlet of 3 kg/s water at 1.2 MPa, 500°C with velocity of 16 m/s. The exit is at 150 kPa, 250°C and very low velocity. Find the power produced and the rate of entropy generation.
NO INTERPOLATION REQUIRED Air enters an adiabatic turbine at 1000 kPa and 1625 degrees C (state...
NO INTERPOLATION REQUIRED Air enters an adiabatic turbine at 1000 kPa and 1625 degrees C (state 1) with a mass flow rate of 5 kg/s and leaves at 100 kPa the isentropic efficiency of the turbine is 85%. Neglecting the kinetic energy change of the steam, and considering variable specific heats, determine: a. the isentropic power of the turbine Isentropic power in kW b. the temperature at the turbine exit temperature at exit in degrees C c. the actual power...
A mixing chamber has 2 inlets, first, steam water enters at 12 bar and 1173.15 K...
A mixing chamber has 2 inlets, first, steam water enters at 12 bar and 1173.15 K , then, saturated liquid enters at 12 bar and 80 kg/min. The exit conditions are 12 bar and 120 kg/min. Obtain the mass flow rate (kg/s) at which steam water enters, the temperature at the exit (C°) and the quality of substance at the exit. Ignore the changes of kinetic and potencial energy.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT