7. Refrigerant 134a enters a water-jacketed compressor operating at steady state at -10°C, 1.4 bar, with a mass flow rate of 4.2 kg/s, and exits at 50°C, 12 bar. The compressor power required is 150 kW. Neglecting kinetic and potential energy effects, determine the rate of heat transfer to the cooling water circulating through the water jacket.

7. Refrigerant 134a enters a water-jacketed compressor operating at steady state at -10°C, 1.4 bar, with a mass flow rate of 4.2 kg/s, and exits at 50°C, 12 bar. The compressor power required is 150 kW. Neglecting kinetic and potential energy effects, determine the rate of heat transfer to the cooling water circulating through the water jacket.

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: Water vapor at 6 MPa, 500°C enters a turbine operating at steady state and expands to 20 kPa. The…

A: The isentropic efficiency of the turbine and the rate of entropy production in the turbine.Given:The…

Q: Refrigerant 22 enters a compressor operating at steady state as saturated vapor at 10 bar and is…

Q: Nitrogen, modeled as an ideal gas, flows at a rate of 4 kg/s through a well-insulated horizontal…

Q: 3) Air enters a turbine operating at steady state at 440 K, 20 bar, with a mass flow rate of 6 kg/s,…

A: Given Data: The mass flow rate is m˙=6 kg/s. Inlet temperature is T1 = 440 K. Outlet temperature is…

Q: Water vapor enters a turbine operating at steady state at 400°C, 40 bar, with a velocity of 200 m/s,…

A: The enthalpy of vapor at the inlet can be determined as,

Q: 23 m³/hr of air at 600 kPa, 330 K enters a well-insulated, horizontal pipe having a diameter of 1.2…

Q: aturated water vapor at 300°F enters a compressor operating at steady state with a mass flow rate of…

Q: 3 2. Water vapor enters a valve at 0.7 bar, 280°C and exits at 0.35 bar. (a) If the water vapor…

A: We have to solve above question

Q: Water vapor at 6 MPa, 500°C enters a turbine operating at steady state and expands to 20 kPa. The…

A: Given Data:- Find:-P1 = 6MPa (a) Isentropic = ?T1 =…

Q: Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K, 278 kPa and exits…

A: GivenT1=1040KP1=278 kPaP2=120kPam=5.5 kg/sWact=1200kWk=1.4

Q: Air enters a compressor operating at steady state at 105 kPa, 300 K, with a volumetric flow rate of…

Q: Air passes through a horizontal duct with steady state conditions. The air enters with parameters…

A: Pressure at inlet (p1) = 1 bar = 100000 Pa Temperature at the inlet (T1) = 290 K volumetric flow…

Q: A frictionless piston-cylinder device contains a liquid-vapor mixture of water at the temperature of…

A: Given:Temperature of liquid-water mixture, T=400 KHeat transfer out from the water, Q=-800…

Q: Liquid water at 20 psia, 50°F enters a mixing chamber operating at steady state with a mass flow…

Q: Air enters a 3600-kW turbine operating at steady state with a mass flow rate of 18 kg/s at 800, 3…

Q: The figure shows a turbine operating at a steady state that provides power to an air compressor and…

Q: At steady state, air at 200 kPa, 51.85°C and a mass flow rate of 4.02 kg/s enters an insulated duct…

A: Given:Properties of air at the inlet of duct.Pressure P1 = 200 KPaTemperature T1 = 51.85°CRate of…

Q: onsider 4.8 pounds per minute of water vapor at 100 lbf/in2, 500oF, and a velocity of 100 ft/s…

Q: Refrigerant 22 is enters a compressor operating at steady state as saturated vapor at 10 bar and…

Q: a) Calculate the mass flow rate of steam (superheated vapor) at 10 MPa and 740 °C entering an…

Q: Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K, 278 kPa and exits…

Q: 4. Air with a mass flow rate of 2.5 kg/s enters a horizontal nozzle operating at steady state at 480…

Q: A well-insulated turbine operating at steady state develops 29.7 MW of power for a steam flowrate of…

A: Given: The power developed by turbine, W = 29.7 W The mass flow rate of the steam, m = 45 kg/s The…

Q: Consider 4.8 pounds per minute of water vapor at 100 Ib;/in", 500°F, and a velocity of 100 ft/s…

A: Velocity of steam at exit, V2=1963.23 ft/s. Rate of entropy production, S.gen=0.33168 BTU/min.Ro

Q: A 340 L tank contains steam, initially at 400°C, 3 bar. A valve is opened for 20 seconds and steam…

A: GivenV=340L=0.340 m3T1=400oCP1=3 bart=20sm˙o=-0.005 kg/s

Q: 3. Water enters a turbine operating at steady state with an initial state of P₁= 40 bar and T₁=520°C…

A: (a) To find: The isentropic efficiency ηt. Given: The initial pressure is P1=40 bar. The initial…

Q: Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K, 278 kPa and exits…

A: Given data: T1=1040 KP1=278 kPaP2=120 kPam=5.5 kgsPactual=1120 kWk=1.4

Q: Carbon dioxide gas is compressed at steady state from a pressure of 1.5 bar and a temperature of 0°C…

A: The mass flow rate of The gas is carbon dioxide.The specific heat of gas is .The inlet condition is…

Q: Saturated water vapor at 300°F enters a compressor operating at steady state with a mass flow rate…

A: Given Saturated water vapor temperature = 300 F Flow rate = 5 lb/s Compression pressure = 650…

Q: 6.94 Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K, 278 kPa and…

A: GivenT1=1040KP1=278 kPaP2=120kPam=5.5 kg/sWact=1200kWk=1.4

Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

7. Refrigerant 134a enters a water-jacketed compressor operating at steady state at -10°C,
1.4 bar, with a mass flow rate of 4.2 kg/s, and exits at 50°C, 12 bar. The compressor
power required is 150 kW. Neglecting kinetic and potential energy effects, determine the
rate of heat transfer to the cooling water circulating through the water jacket.

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 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

I got 12.5876 but it was wrong
Question 31
Refrigerant 134a enters a horizontal pipe operating at steady state at 40°C, 300 kPa, and a velocity of 40 m/s. At the exit, the temperature is 90°C and the pressure is 240 kPa. The pipe diameter is 0.01 m. Determine: (a) the mass flow rate of the refrigerant, in kg/s, (b) the velocity at the exit, in m/s, and (c) the rate of heat transfer between the pipe and its surroundings, in kW. Part A X Your answer is incorrect. Determine the mass flow rate of the refrigerant, in kg/s. i ! kg/s
Steam enters a one-inlet, two-exit control volume at location (1) at 360°C, 100 bar, with a mass flow rate of 2 kg/s. The inlet pipe is round with a diameter of 5.2 cm. Fifteen percent of the flow leaves through location (2) and the remainder leaves at (3). For steady-state operation, determine the inlet velocity, in m/s, and the mass flow rate at each exit, in kg/s.
A well-insulated turbine operating at steady state with a steam flow rate of 40 kg/s It produces MW of power. Water vapor enters the turbine at 360°C at a speed of 35 m/s. 0.06 from turbine bar pressure and 120 m/s velocity as saturated steam. Potential energy effects are neglected. is being done. Determine the inlet pressure in bar.
Refrigerant 22 flows through a horizontal tube having an inside diameter of 4 cm. Therefrigerant flows at steady state and at the entrance to the tube it has with a quality of 0.3,temperature of 28°C, and velocity of 8 m/s. The refrigerant exits the tube as a saturatedliquid at 14 bar.Question:Determine:(a) the mass flow rate of the refrigerant, in kg/s.(b) the velocity of the refrigerant at the exit, in m/s.(c) the rate of heat transfer, in kW, and its associated direction with respect to therefrigerant
Air with a mass flow rate of 2.5 kg/s enters a horizontal nozzle operating at steady state at 480 K, 350 kPa, and velocity of 5 m/s. At the exit, the temperature is 300 K and the velocity is 450 m/s. Using the ideal gas model for air with constant cp=1.011 kJ/kg K, determine: (a) the area at the inlet, in m²; (b) Calculate the work done by the control volume and the flow work, in KW; . (c) the heat transfer to the nozzle from its surroundings, in kW.
A well-insulated turbine operating at steady state, produces 23 MW of power with a steam flow rate of 40 kg/h. Water vapor enters the turbine at 360°C at a speed of 35 m/s. It comes out from turbine at 0.06 bar pressure and 120 m/s velocity as saturated steam. Potential energy effects are neglected. Determine the inlet pressure in bar.
2. Air as ideal gas enters a compressor at inlet pressure 96 kPa, T₁ = 27C and volumetric flow rate is 26.91 m³/min and exits at 230 kPa and 127C. It is then cooled to 77C in heat exchanger which uses water with an inlet temperature at 25C and outlet temperature 40C. Determine (a) the compresor, in kW, and the mass flow rate of the cooling water, in kg/s (b) the rates of entropy production, each in kW/K, for the compressor and the heat exchanger.
Question 20 Nitrogen, modeled as an ideal gas, flows at a rate of 4 kg/s through a well-insulated horizontal nozzle operating at steady state. The nitrogen enters the nozzle with a velocity of 20 m/s at 340 K, 400 kPa and exits the nozzle at 100 kPa To achieve an exit velocity of 478.8 m/s, determine: (a) the exit temperature, in K. (b) the exit area, in m². Part A To achieve an exit velocity of 478.8 m/s, determine the exit temperature, in K. T₂= = Part B A₂ > K To achieve an exit velocity of 478.8 m/s, determine the exit area, in m². m² =
Twenty m/hr of air at 600 kPa, 330 Kenters a well-insulated, horizontal pipe having a diameter of 1.2 cm and exits at 120 kPa. Assume steady state and use the ideal gas model for the air. Also assume constant specific heat, Cp = 1.007 kJ/kg-K for air at 330 K. Determine the mass flow rate, in kg/s, and the exit velocity, in m/s.
Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.?, 170°F, with a velocity of 120 ft/s and exits at 50 lbf/in.? with a velocity of 1500 ft/s. For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant at the exit. T2 = i °F X2 = i