A heat pump cycle using water as the working fluid consists of a compressor, a condenser, an expansion valve, and an evaporator. Saturated vapor with mass flow rate of 1 kg/s at 0.5 MPa (state 1) enters the condenser and leaves it as saturated liquid at the same pressure (state 2). The pressure in the evaporator is 0.01 MPa. The condenser and the evaporator processes are isobaric. The compressor is adiabatic and reversible. The valve is adiabatic. A. List all the known information and assumptions. B. Determine the heat output of the condenser (QH) C. Determine the heat input of the evaporator(Qc) D. Determine the coefficient of performance of the heat pump. E. Determine the coefficient of performance of a Carnot heat pump running between the same

A heat pump cycle using water as the working fluid consists of a compressor, a condenser, an expansion valve, and an evaporator. Saturated vapor with mass flow rate of 1 kg/s at 0.5 MPa (state 1) enters the condenser and leaves it as saturated liquid at the same pressure (state 2). The pressure in the evaporator is 0.01 MPa. The condenser and the evaporator processes are isobaric. The compressor is adiabatic and reversible. The valve is adiabatic. A. List all the known information and assumptions. B. Determine the heat output of the condenser (QH) C. Determine the heat input of the evaporator(Qc) D. Determine the coefficient of performance of the heat pump. E. Determine the coefficient of performance of a Carnot heat pump running between the same

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 well-insulated, thin-walled, counter-flow heat exchanger is to be used to cool oil (cp = 2.20…

Q: Turbines, compressors, boilers, condensers, and heat exchangers operate for long periods of time…

A: It is required to fill the blanks

Q: The state of plane strain on an element has components of Ez = 500 (10-6), y = 300(10-6), and…

Q: Question 19 Steam enters the first-stage turbine shown in the figure at 40 bar and 500°C with a mass…

A: The given information in the problem is shown in the following attached image:

Q: A heat exchanger operates steadily as shown in Figure Q2. Air enters the heat exchanger at 100 kPa,…

Q: Water/steam is used to run a Carnot heat engine cycle, as shown in the figure below. During the…

A: The thermal efficiency of the cycle.Given:The maximum pressure is .The minimum pressure is .

Q: 5. An open feedwater heater that operates at a pressure of 1000 kPa. Feedwater at 50°C and 1000 kPa…

Q: vapor compression refrigeration system operates on the cycle shown below (from Smith, Van Ness, and…

Q: Q1) In an ice-making plant, water at 0 °C is frozen at atmospheric pressure by evaporating saturated…

Q: Refrigerant-134a enters the compressor of a refrigerator as superheated vapor a

A: Given: The mass flow rate of refrigerant is, mR=0.07 kg/s. Entrance pressure of the compressor is,…

Q: Air as ideal gas enters a compressor at inlet pressure 96 kPa, T₁ = 27C and volumetric flow rate is…

Q: Consider the following ideal cascade refrigeration system with pressures of 0.9, 0.4, and 0.12 MPa.…

A: Given:High pressure condenser pressure, Pc=0.9 MPa=900 kPaIntermediate pressure, Pi=0.4 MPa=400…

Q: An ideal gas at 15 lbf/in2 , 77°F flows horizontally at 516 ft/s into an adiabatic diffuser. It…

Q: The large insulated flash chamber of a vacuum refrigeration plant is kept at low temperature by a…

A: To find: The quantity in cubic meter per minute of chilled water system can provide. Given: The…

Q: Air within a piston-cylinder assembly executes a Carnot heat pump cycle, as shown in the figure…

A: Given TH = 600k TC = 300k QR = 1000 kJ/kg Pi = 325 kPa To find Work input Final pressure

Q: The figure to the right gives the schematic of a vapor power plant in which water steadily…

Question

A heat pump cycle using water as the working fluid consists of a compressor, a condenser, an
expansion valve, and an evaporator. Saturated vapor with mass flow rate of 1 kg/s at 0.5 MPa
(state 1) enters the condenser and leaves it as saturated liquid at the same pressure (state 2). The
pressure in the evaporator is 0.01 MPa. The condenser and the evaporator processes are isobaric.
The compressor is adiabatic and reversible. The valve is adiabatic.
A. List all the known information and assumptions.
B. Determine the heat output of the condenser (QH)
C. Determine the heat input of the evaporator(Qc)
D. Determine the coefficient of performance of the heat pump.
E. Determine the coefficient of performance of a Carnot heat pump running between the same
temperatures TH and TC at the evaporator and condenser.
F. Calculate the entropy generation in the compressor.
G. Draw the TS diagram for the cycle on paper.
(Hint: you must calculate T1, T2, T3, T4, h1, h2, h3, h4, s1, s2, s3, s4, and draw the dome)
Condenser
Expansion valve
Evaporator

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: Write the given data with suitable variables-

VIEW

Step 2: Write the list of assumptions.

VIEW

Step 3: (b)-Determine the heat output to the condenser.

VIEW

Step 4: (c)-Determine the value of heat input to the evaporator.

VIEW

Solution

VIEW

Step by step

Solved in 5 steps with 11 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

Refrigerant 134a enters an air-cooled condenser at 12 bars and 60°C, and leaves as a saturated liquid at 12 bars. Atmospheric air at 35°C is blown over the condenser tubes and leaves at 45°C. The heat transfer between the two flfluid streams equals 25 MJ/h. Changes in kinetic and potential energy are negligible. Make any reasonable assumptions if necessary. Determine (a) the mass flow rates for the R-134a and the air, in kg/h, Hint: Use the energy conservation on each of the ⁅ uid streams separately. (b) the entropy production rate in the condenser, in kJ h-1K-1, Hint: Use the entropy balance over the whole condenser. (c) the change in kinetic energy for R-134a if the pipe diameter is 2.0 cm, in kJ/h (d) Draw the T-s diagram for the process for R-134a.
A reheat cycle with two stages of reheating is executed, with steam expanding initially from 90 bar and 530°C. The two reheater pressures are 10 bar and 0.6 bar, and the steam leaves each reheater at 480°C. Condensation occurs at 0.03 bar. For an ideal cycle, find QA in kJ/kg.
4. Steam enters the condenser of a steam power plant at 20000 kPa and a quality of 95 percent with a mass flow rate of 20 Mg/h. It is to be cooled by water from a nearby river in circulating the water through the tubes within the condenser. To prevent thermal pollution, the river water is not allowed to experience a temperature rise above 10°C. If the steam is to leave the condenser as saturated liquid at 20000 Pa, determine the mass flow rate of the cooling water required.
A reheat cycle with two stages of reheating is executed, with steam expanding initially from 90 bar and 530°C. The two reheater pressures are 10 bar and 0.6 bar, and the steam leaves each reheater at 480°C. Condensation occurs at 0.03 bar. For the engine, ignore the pressure drop through the reheaters, let the engine operate through the same states, and compute W in kJ/kg.
A standard vapor compression system produces 20 tons of refrigeration using R134a while operating between a condenser temperature of 45 deg-C and an evaporator temperature of -25 deg-C. Determine the refrigerating effect per unit of refrigerant, circulation rate in kg/s, power supplied, COP, heat rejected in kW, the volume flow rate in L/s, and temperature at the compressor discharge.
Steam enters the first stage of the turbine illustrated in the Figure below at 40 bar and 500 ºC with a volumetric flow rate of 90 m3/min. The steam leaves the turbine at 20 bar and 400 ºC. The steam is then reheated to a constant temperature of 500 ºC before entering the second stage of the turbine. The steam leaves the second stage as saturated steam at 0.6 bar. For a steady state operation and ignoring heat losses and the effects of kinetic and potential energy, determine:a) The mass flow of steam.b) The Power produced by turbine 1.c) The power produced by the turbine 2.d) The rate of heat transfer to the heater.
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.22 MPa and 27 C at a rate of 0.07 kg/s, and it leaves at 1.2 MPa and 73°C. The refrigerant is cooled in the condenser to 44°C and 1.16 MPa, and t is throttied to 0.21 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor, (b) the isentropic efficiency of the compressor, and (c) the COP of the refrigerator.
Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35°C at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. The compressor consumes 1.24 kW of power. Use data from the tables. 800 kPa x=0 Jo Expansion valve 19H Condenser Evaporator QL Compressor 800 kPa 35°C Determine the rate of heat absorption from the outside air. The rate of heat absorbed from the outside air is W₁ kW.
Determine:(a) the total power for both compressors, in kW.(b) the mass flow rate of the water, in kg/s.
Determine: a)Work of the compressor(kW) b)COP of the cycle
In the evaporator of an air conditioning system, air flows over finned tubes through with the refrigerant R134a flows. air out refrigerant in refrigerant out air in The mass flow rate of the air is 0.75 kg/s and the air enters at 40°C and pressure 1.04 bar. The air leaves the evaporator at 25°C and 1.01 bar. The refrigerant enters the evaporator with a quality of 0.2 and a temperature of 12°C. The refrigerant exits as saturated vapor. Obtain the properties of air and R134a using the fluids "Air" and "R134a" in EES. What is the volumetric flow rate of the air entering the heat exchanger (m^3/s)? Determine the rate of heat transfer from the air to the refrigerant (W). Determine the mass flow rate of the refrigerant (kg/s).
Refrigerant 134a enters the compressor of a refrigeration system with a mass flow rate of 0.08 kg/s as saturated vapor at -12°C and is compressed to 9 bar, 40°C. The refrigerant then enters the condenser and exits as saturated liquid at 9 bar. The compressor power input is 2.6 kW. Assuming steady-state operation, and neglecting kinetic and potential energy effects, show the states on the T-v diagram and determine the heat transfer rates for the compressor and condenser, each in kW. P2-9 bar T- 40°C (2) Condenser Qend T. (3) P=9 bar Sat. liquid W=-2.6 kW W=0 Compressor Sat. vapor T-- 12°C i, -0.08 kg/s