3. A vapor-compression refrigeration system circulates Refrigerant 134a at a rate of 6 kg/min. The refrigerant enters the compressor at -10°C, 1.4 bar, and exits at 7 bar. The isentropic compressor efficiency is 67%. There are no appreciable pressure drops as the refrigerant flows through the condenser and evaporator. The refrigerant leaves the condenser at 7 bar, 24°C. Ignoring heat transfer between the compressor and its surroundings, determine (a) The coefficient of performance. (b) The refrigerating capacity, in tons.

3. A vapor-compression refrigeration system circulates Refrigerant 134a at a rate of 6 kg/min. The refrigerant enters the compressor at -10°C, 1.4 bar, and exits at 7 bar. The isentropic compressor efficiency is 67%. There are no appreciable pressure drops as the refrigerant flows through the condenser and evaporator. The refrigerant leaves the condenser at 7 bar, 24°C. Ignoring heat transfer between the compressor and its surroundings, determine (a) The coefficient of performance. (b) The refrigerating capacity, in tons.

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: An ammonia vapour-compression refrigerator operates between an evaporator pressure of 2.077 bar and…

A: The objective of the question is to calculate the Coefficient of Performance (COPrer) and the…

Q: . Explain how the expansion valve in the refrigeration system works?

A: Dear student, According to the guidelines I am allowed to answer only one problem…

Q: An ideal vapor-compression refrigeration cycle, with refrigerant R-22 as the working fluid, has an…

Q: Refrigerant-134-a undergoes an actual vapor-compression cycle. The refrigerant enters the compressor…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 2. A refrigeration system with a capacity of 10 tons of refrigeration, operates at 210 kPa in the…

Q: Assume steady-state for all questions. 1. The throttling process of a refrigerant begins with…

Q: *PART B ONLY In a standard ideal refrigeration cycle (Fig. 1), the refrigerant 134a enters…

A: Given: Standard ideal refrigeration(R-134a)P1=1 MPaP2=100 kPa

Q: (c) Evaluate and compare the coefficients of performance IL COPR = СОPR Win – Wout Win

A: Given: Ideal Refrigeration cycle and a cycle with the turbine. CoP of refrigeration is the ratio of…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: The cycle operates on ideal vapor compression cycle between pressure limit The mass flow rate of…

Q: A vapor-compression refrigeration system using ammonia as refrigerant is to be used to cool 45,000kg…

Q: Q6/ A window air conditioner uses R22, the evaporator pressure is 0.5 MPa and the condenser pressure…

A: Given:Refrigerant=R22Evaporator pressure, Pe=0.5 MPaCondenser pressure, Pc=2.15 MPaCooling capacity,…

Q: PART A ONLY ( Use Image below) In a standard ideal refrigeration cycle (Fig. 1), the refrigerant…

A: Vapor Compression cycle: An ideal vapor compression cycle has 4 process which are- Process 1-2:…

Q: you design a custom refrigeration system using 1,1,2-tetrafluoroethane (R-134a) as refrigerant. You…

A: P2=P3=9bar =900 kPa (Condensor) P1=P4=2 bar =200kPa (Evaporator) 1-2 =isentropic compression…

Q: Qout Condenser Compressor Expansion A valve +1 Evaporator Expansion valve Qin.2 = 2 tons Expansion A…

Q: The property data for a steady state vapor-compression refrigeration cycle with refrigerant 134a as…

Q: Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

A: Assumptions:Steady flow process.Negligible changes in kinetic and potential energies.The compressor…

Q: Consider an ideal refrigeration cycle using R-134a as the refrigerant. The gage pressure of the…

A: Given:Refrigerant=R134aGage pressure of refrigerant in the evaporator, Pe=0.192 MPaGage pressure of…

Q: A vapor-compression refrigeration cycle with Refrigerant 134a as the working fluid operates with an…

A: Given: Te=50°F =10°Tc=140°F =60°CRefrigeration capacity=5 tons

Question

3. A vapor-compression refrigeration system circulates Refrigerant 134a at a rate of 6 kg/min.
The refrigerant enters the compressor at -10°C, 1.4 bar, and exits at 7 bar. The isentropic
compressor efficiency is 67%. There are no appreciable pressure drops as the refrigerant flows
through the condenser and evaporator. The refrigerant leaves the condenser at 7 bar, 24°C.
Ignoring heat transfer between the compressor and its surroundings, determine
(a) The coefficient of performance.
(b) The refrigerating capacity, in tons.

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

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 1 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

! 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 50°C at a rate of 0.024 kg/s and leaves at 750 kPa subcooled by 3°C. The refrigerant enters the compressor at 200 kPa superheated by 4°C. (Take the required values from saturated refrigerant-134a tables.) Он 750 kPa (3) Condenser Expansion valve Evaporator +M QL 800 kPa 50°C Compressor Determine the COP of the heat pump. (You must provide an answer before moving to the next part.) The COP of the heat pump is
PART A ONLY ( USE IMAGE BELOW) In a standard ideal refrigeration cycle (Fig. 1), the refrigerant 134a enters adiabatically isolated expansion valve as a saturated liquid at a pressure P1 = 1 MPa and leaves the device at a pressure P2 = 100kPa. Then the refrigerant enters the evaporator, where it changes into the saturated vapor. Subsequently, the vapor is compressed in an isentropic compressor to the pressure 1MPa and condensed in the condenser back to the initial saturated-liquid state. PART A - Determine the heat qL absorbed by the refrigerant in the evaporator and the compressor work win (per 1 kg of the refrigerant).
B-Draw the ideal vapour compression refrigeration cycle on T-S and P-H diagrams. State all details on the diagrams and give a short explanation of each process of the cycle.
13. A plant using R-134a is used to chill water for warship systems. The condenser is also cooled by water. Assume no undercooling in the condenser. The following data is to be used: 50L/s Water flowrate through evaporator Water inlet temperature to evaporator Water outlet temperature from evaporator -10°C 20°C 140L/s 350kPa 1100kPa Water flowrate through condenser Compressor suction pressure Compressor discharge pressure Compressor suction temperature Compressor discharge temperature Specific heat capacity of water Calculate: -10°℃ 60°C 4.2kJ/kgK a. Coefficient of Performance b. refrigerant cooling load c. refrigerant mass flowrate d. compressor power e. heat removed in condenser f. temperature change in condenser cooling water
11. A vapour compression refrigeration plant uses ammonia. The compressor takes vapour from the evaporator at 207.7kPa and -8°C and delivers to the condenser at 1470kPa and 113°C. The temperature of the liquid leaving the condenser at a rate of 12kg/min is 38°C. Calculate: (a). the dryness of the refrigerant entering the evaporator (b). the cooling load (c). the power to the compressor (d). coefficient of performance (e). plant capacity
Please help!!!! Refrigerant 22 enters the compressor of an ideal vapor-compression refrigeration system as saturated vapor at -30°C with a volumetric flow rate of 10 m3/min. The refrigerant leaves the condenser at 19°C, 9 bar. Determine: (a) the magnitude of the compressor power, in kW. (b) the refrigerating capacity, in tons. (c) the coefficient of performance. (d) the rate of entropy production for the cycle, in kW/K. Answer for part (a): 52 kW Answer for part (b): 59 tons Answer for part (c): 3.98 Please answer part also d! That's the part I also need. Thank you!
Data for steady-state operation of a vapor-compression refrigeration cycle with Refrigerant 134a as theworking fluid are given in the table below. State 1 is at the compressor inlet. The cooling capacity (i.e therate at which heat is removed from the cooled space) is 4.6 tons. 1 ton of refrigeration is equivalent to211 kJ/min. Ignoring heat transfer between the compressor and its surroundings, sketch the ?-? diagramof the cycle and determinea) the mass flow rate of the refrigerant, in kg/min.b) the isentropic compressor efficiency.c) the coefficient of performance.State ? (bar) ? (°C) ℎ (kJ/kg) ? (kJ/kg-K)