A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a. The table below shows some of the operating parameters and properties for the refrigerant. The compressor is réfrigerated, and the condenser is also cooled with water. The compressor receives shaft power equivalent to 7.5 hp. Neglecting changes in kinetic and potential energy changes and any heat loss between devices, please answer the following. a. Complete the table below and sketch the cycle processes on a T-s diagram. When completing the table please use the same number of decimal places as in the tables. b. Determine the cooling capacity of the refrigeration unit, in Tons (1 refrigeration Ton = 211 kJ/min). c. Compute the COP. d. Determine the volume flow rate of refrigerant entering the condenser in L/min. e. Determine the mass flow rate of cooling water passing through the condenser 1. Determine the heat transfer rate from the compressor. g. Compute the rate of entropy generation in the condenser. h. Compute the rate of entropy generation in the expansion valve. 1 2 State P T h (kPa) (°C) (kJ/kg) 400 15 1200 50 S (kJ/kg- K) Water Qout

A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a. The table below shows some of the operating parameters and properties for the refrigerant. The compressor is réfrigerated, and the condenser is also cooled with water. The compressor receives shaft power equivalent to 7.5 hp. Neglecting changes in kinetic and potential energy changes and any heat loss between devices, please answer the following. a. Complete the table below and sketch the cycle processes on a T-s diagram. When completing the table please use the same number of decimal places as in the tables. b. Determine the cooling capacity of the refrigeration unit, in Tons (1 refrigeration Ton = 211 kJ/min). c. Compute the COP. d. Determine the volume flow rate of refrigerant entering the condenser in L/min. e. Determine the mass flow rate of cooling water passing through the condenser 1. Determine the heat transfer rate from the compressor. g. Compute the rate of entropy generation in the condenser. h. Compute the rate of entropy generation in the expansion valve. 1 2 State P T h (kPa) (°C) (kJ/kg) 400 15 1200 50 S (kJ/kg- K) Water Qout

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: Q2: An ideal refrigeration cycle developing 30 Kw of refrigeration (with R-22) as a working fluid)…

A: According to our guidelines, we are supposed to answer 1st three sub parts. Please repost other…

Q: 5- (h.w.): In a certain material under load a plane AB carries a tensile direct stress of 30 MN/m2…

A: Find the normal stress on AC and shear stress on BC and then find principal stress

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: A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a.…

A: ''Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: A parameter used to characterize the heat pump cycle performance is called the thermal efficiency.…

A: Heat pump: The device that is used for transfer heat is called a heat pump. Refrigerators and air…

Q: A residential refrigerator is used to steadily maintain a cool and comfortable Inside space at 20°C…

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: A mechanical vapor compression refrigeration cycle operates with water as the working fluid. The…

A: Since we are allowed to answer 3 subparts. So, we’ll answer the first 3. Please resubmit the…

Q: An air conditioner is used to remove 8000 Btu/hr of heat from a house in the summer time. The inside…

Q: Question 3 A vapour compression refrigerator using R134a works between temperature limits of -5 °C…

A: Step 1: Step 2: Step 3: Step 4:

Q: Data are provided for two reversible refrigeration cycles. One cycle operates between hot and cold…

Q: A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a.…

Q: Required information Refrigerant-134a enters the condenser of a steady-flow Carnot refrigerator as a…

Q: Refrigeration is desired at a Temperature of -5.6°C (minus 5.6 degrees C). Heat is rejected at a…

A: Given Maximum temperature, Tmax = -5.6oC = 267.4 K Minimum temperature, Tmin = 36.7oC = 309.7 K…

Q: An air-conditioner which uses R-134a operates on the ideal vapor compression refrigeration cycle…

A: Given: Evapourator temperature→T1=T4=15°C and condensor temperature→T3=32°C

Q: An Ammonia refrigerant vapor compression system is utilized as an air-cooled water chiller. It is…

A: Note: As per the policy, we can solve the first three subparts. Please resubmit the remaining parts.…

Q: Quick solution,no gpt.

A: Step 1: Step 2: Step 3: Step 4:

Q: Referring to the reversible heat pump cycle shown in the figure, p₁ = 14.7 lb/in², p = 20.3 lb/in²,…

Q: A condenser of a refrigeration system rejects heat at a rate of 120 kW, while its compressor…

Q: vice? Take the working fluid to be superheate a specific heat ratio of 1.33, and give your an

A: Given data compression ration = 24.9 Rate of heat addition = 590 kW gama = 1.33 work output =?

Question

A vapor compression refrigeration cycle operates at steady flow conditions with 0.25
kg/s or R-134a. The table below shows some of the operating parameters and
properties for the refrigerant. The compressor is réfrigerated, and the condenser is also
cooled with water. The compressor receives shaft power equivalent to 7.5 hp.
Neglecting changes in kinetic and potential energy changes and any heat loss between
devices, please answer the following.
a. Complete the table below and sketch the cycle processes on a T-s diagram.
When completing the table please use the same number of decimal places as in
the tables.
b.
123456
Determine the cooling capacity of the refrigeration unit, in Tons (1 refrigeration
Ton=211 kJ/min).
c. Compute the COP
d. Determine the volume flow rate of refrigerant entering the condenser in L/min.
e. Determine the mass flow rate of cooling water passing through the condenser.
1. Determine the heat transfer rate from the compressor.
g. Compute the rate of entropy generation in the condenser.
h. Compute the rate of entropy
generation in the expansion valve.
State P
S
T h
(kPa) (°C) (kJ/kg) (kJ/kg-
K)
400
1200
1160 44
400
130
130
8.91
18
26
Compresse

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: Given

VIEW

Step 2: Calculation of properties at different point and T-s diagram

VIEW

Step 3: Calculation of refrigerating capacity and COP

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 57 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

A Carnot vapor refrigeration cycle operates between thermal reservoirs at 40 ⁰F and 100 ⁰F. Determine the coefficient of performance.
an ammonia refrigeration cycle operates at 616 kpa suction pressure and 1737 kpa condenser pressure, compressor clearance of 5%, refrigeration capacity of 120 kw, compressor efficiency of 80%, mechanical efficiency of 75% and actual volumetric efficiency of 70. determine (a) actual work (b) ideal cop (c) mass flow rate of ammonia (d) indicated work (e) brake work (f) volumeteric
Parts d,e and f
Required information Refrigerant-134a enters the condenser of a steady-flow Carnot refrigerator as a saturated vapor at 65.0 psia, and it leaves with a quality of 0.05. The heat absorption from the refrigerated space takes place at a pressure of 30 psia. Determine the coefficient of performance. (Round the final answer to three decimal places.) The coefficient of performance is
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…
Define Compressors are sometimes intentionally cooled to minimize the work input.
As shown in the figure, an air conditioner operating at steady state maintains a dwelling at 70°F on a day when the outside temperature is 103.5°F. The rate of heat transfer into the dwelling through the walls and roof is 30,000 Btu/h and the net power input to the air conditioner compressor is 3.45 hp. Step 1 B Inside, 70° F Determine the coefficient of performance for the air conditioner. = Evaporator i 30,000 Btu/h Determine the coefficient of performance of the air conditioner. Determine the power input required, in hp, and the coefficient of performance for a reversible air conditioner providing the same cooling effect while operating between the same cold and hot temperatures. Refrigerant loop Compressor Outside Q + Condenser