A hot-water stream at 70C enters an adiabatic mixingchamber with a mass flow rate of 3.6 kg/s, where itis mixed with a stream of cold water at 20C. If the mixtureleaves the chamber at 42C and the pressurefor all streams is 200 kPa, determine (a) the mass flowrate of the cold water and (b) the rate of entropygeneration during this mixing process.

To calculate the mass flow rate of cold water and rate of entropy generation during this…

A hot-water stream at 70C enters an adiabatic mixing chamber with a mass flow rate of 3.6 kg/s, where it s mixed with a stream of cold water at 20C. If the mixture eaves the chamber at 42C and the pressure for all streams is 200 kPa, determine (a) the mass flow ate of the cold water and (b) the rate of entropy generation during this mixing process.

A hot-water stream at 70C enters an adiabatic mixing chamber with a mass flow rate of 3.6 kg/s, where it s mixed with a stream of cold water at 20C. If the mixture eaves the chamber at 42C and the pressure for all streams is 200 kPa, determine (a) the mass flow ate of the cold water and (b) the rate of entropy generation during this mixing process.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: A piston-cylinder device contains a saturated water. During a constant- pressure process, 538 kJ of…

A: Given dataHeat transferred to the surroundings Q = 538kJTemperature of the surrounding T = 230 =…

Q: A hot-water stream at 90 °C enters an insulated mixing chamber with a mass flow rate of mh=0.75 kg/s…

Q: Determine

A: To find : The decrease in temperature during the process and the specific volume Given : initial…

Q: An insulated rigid tank contains 4.4 lbs of saturated liquid-vapor mixture of water at 100 kPa. An…

A: Givenm=4.4lbs=4.4×0.453592kg=1.99581kgP=100kPax=25%=0.25

Q: In a shower, cold water at 10°C flowing at a rate of 5 kg/min is mixed with hot water at 60°C…

A: Given: The temperature of the cold water is TC=10°C. The temperature of the hot water is TH=60°C.…

Q: Calculate the change in specific entropy of air undergoing a process from a temperature of 300 K and…

Q: An adiabatic steam turbine operates with a superheated steam inlet at 9200 kPa and 475°C. Its outlet…

Q: 1) Helium is to be compressed from 150 kPa and 300 K to 800 kPa and 500 K. A heat loss of 20 kJ/kg…

A: Given data, Let us assume point1 as inlet and point2 as outlet. T1 = Initial temperature =300K T2 =…

Q: During a heat transfer process, the entropy change of incompressible substances, such as liquid…

A: Change in entropy of incompressible substance during heat transfer process is given by:…

Q: A hot-water stream at 90 °C enters an insulated mixing chamber with a mass flow rate of mh=0.75 kg/s…

Q: Water at the initial pressure and temperature of P1 = 40 bar and T1 = 553.15K, respectively, is…

Q: Liquid water, at 250 kPa and 20 °C, is heated in a chamber by mixing with superheated steam, at 250…

A: GivenPressure P=250kpamass flow rate m˙=5kg/sTemperature, T1=20°CT2=350°CT3=55°C

Question

A hot-water stream at 70C enters an adiabatic mixing
chamber with a mass flow rate of 3.6 kg/s, where it
is mixed with a stream of cold water at 20C. If the mixture
leaves the chamber at 42C and the pressure
for all streams is 200 kPa, determine (a) the mass flow
rate of the cold water and (b) the rate of entropy
generation during this mixing process.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduction

VIEW

Step 2: mass flow rate of the chamber

VIEW

Step 3: rate of entropy generation

VIEW

Solution

VIEW

Step by step

Solved in 4 steps with 31 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Saturated water at 36.6°C passes through a throttling valve and becomes a mixture of water and steam at 5.4°C. Calculate the specific volume and specific enthalpy of the mixture. Show detailed steps of how the properties are obtained by using only the Saturated Water and Steam table. Consider that a throttling process is a typical irreversible process. The specific enthalpies of the working fluid before and after a throttling valve are the same. The steam table has been provided in the image
In a heating system, cold outdoor air at 7°C flowing at a rate of 4 kg/min is mixed adiabatically with heated air at 70°C flowing at a rate of 5 kg/min. The exit temperature of the mixture is (a) 34°C (b) 39°C (c) 42°C (d) 57°C (e) 70°C
3. Helium enters an adiabatic 100-mm-diameter pipe steadily, with a velocity of 75 m/s. At the pipe entrance, the gas is at 200 kPa and 20°C; and at the exit, it is at 180 kPa and 18°C. Calculate the rate at which entropy is generated in the pipe, in W/K. (Assume ideal gas behavior and cold-air-standard)
Propane initially at 300 K and 100 kPa is is compressed to 1 MPa in a reversible, steady-flow, and compressor. Determine the amount of work in kJ/kg if the process is isothermal. Round your answer to one decimal place
Air at 100 kPa and 280 K is compressed steadily to 600 kPa and 400 K. The mass flow rate of the air is 0.02 kg/s, and a heat loss of 16 kJ/kg occurs during the process. Assuming the changes in kinetic and potential energies are negligible, determine the necessary power input to the compressor.
Refrigerant 134a enters a compressor at 600 kPa as a saturated vapor. It exits at 60°C and 1.4 MPa. Determine the entropy change and the isentropic efficiency. Show the process on a T-s diagram with respects to the saturation lines. (30)
An insulated piston-cylinder device contains 0.5L of saturated liquid water at a constant pressure of 100 kPa. An electric resistance heater inside the cylinder is now turned on, and 1178.36 kJ of electrical work is transferred to the steam. Determine (a) the entropy change of the water during this process; (b) the entropy generation during this process? 1178.36 kJ M H₂O 100 kPa Sat. liquid
A- Air at 15°C and 1bar occupies 0.02 m³. The air is heated at constant volume until the pressure is 5bar, and then cooled at constant pressure back to the original temperature. Calculate the net heat flow to or from the air and the net entropy change. Sketch the process on a T-s diagram. (8.5marks)
Air enters an adiabatic chamber steadily at 300kPa, 200 C, and 45 m/s. It leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 110cm^2. The molar mass is 29 g/mol. Determine the density of the air at the inlet of the nozzle. DeterMine the mass flow rate of air through the nozzle. Knowing the specific enthalpy of air at the inlet is 475 kJ/kg, use energy balance to determine the specific enthalpy of air at the outlet of the nozzle. Calculate the change in specific entropy between the inlet and outlet of the nozzle.
Insulated water tank Water (0.12m) COPPER A 50-kg copper block initially at 80°C is dropped into an insulated tank that contains 0.120 m3 of water at 25FC. Determine the final equilibrium temperature and the total entropy change for this process. Properties: Take the density and specific heat of water as p=997 kg/m3 and cp-4.18KJ/kgK, respectively. and the specific heat of copper as cp=0.386KJ/kgK (values at room temperature). OA0 204 kJk O0035 kJikgK