vapor-compression A water cooler based on the refrigeration cycle uses refrigerant R- 134a as the working fluid, and the refrigerator operates in 35°C surroundings. The condenser and evaporator pressures are 1.2 MPa and 180 kPa, respectively, and the isentropic efficiency of the compressor is 80%. The air conditioner is being used to cool a 6 liter/minute (LPM) stream of liquid water from 35°C down to 1°C. Find the power input needed to drive the compressor (answer: 5.63 kW). Use Cengel's R-134a tables posted on Canvas to model the refrigerant. Expansion Valve Tour 1°C 0 35°C Surroundings QCONDENSER Condenser 1.2 MPa Evaporator 180 kPa EVAPORATOR 6 LPM of Water Compressor TIN = 35°C W COMPRESSOR

vapor-compression A water cooler based on the refrigeration cycle uses refrigerant R- 134a as the working fluid, and the refrigerator operates in 35°C surroundings. The condenser and evaporator pressures are 1.2 MPa and 180 kPa, respectively, and the isentropic efficiency of the compressor is 80%. The air conditioner is being used to cool a 6 liter/minute (LPM) stream of liquid water from 35°C down to 1°C. Find the power input needed to drive the compressor (answer: 5.63 kW). Use Cengel's R-134a tables posted on Canvas to model the refrigerant. Expansion Valve Tour 1°C 0 35°C Surroundings QCONDENSER Condenser 1.2 MPa Evaporator 180 kPa EVAPORATOR 6 LPM of Water Compressor TIN = 35°C W COMPRESSOR

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: Consider an ice-producing plant that operates on the ideal vapor-compression refrigeration cycle and…

Q: A refrigerator operates on an ideal vapour-compression refrigeration cycle and uses refrigerant…

Q: A gas refrigeration system utilizing air as the working fluid possesses pressure ratio of 3. The air…

A: Pressure ratio, PR = 3Inlet temperature to the compressor, T1 = 5°C = 278KOutlet temperature from…

Q: R-134a enters the compressor of an ideal vapor-compression refrigeration cycle as saturated vapor at…

A: Answer: The COP of the cycle is 5.25.

Q: A refrigeration system with R134a as the working fluid is used to maintain a space at 25°C by…

A: The working fluid of the refrigeration system is R134aEntering the temperature of the working fluid…

Q: Consider a refrigeration system that operates on an actual vapor-compression refrigeration cycle…

Q: 2. Refrigerant-134a enters the compressor of a refrigerator at 100 kPa and -20°C at a rate of 0.5…

Q: A refrigerator operates on the ideal vapor-compression refrigeration cycle and uses refrigerant-134a…

Q: A gas refrigeration system utilizing air as the working fluid possesses a pressure ratio of 3. The…

A: The Gas Refrigeration System with a Pressure Ratio of 3:Assumptions:The system operates under…

Q: efrigeration system with R134a as the working fluid is used to maintain a space at 25°C by absorbing…

Q: Consider a refrigerator that operates on the vapor compression refrigeration cycle with R-134a as…

A: According to the given dataA vapour compression cycle is drawn belowWe need to findThe coefficient…

Q: Consider an ice-producing plant that operates on the ideal vapor-compression refrigeration cycle and…

A: Assume an ideal vapor-compression cycle.In an ideal vapor compression cycle, the refrigerant enters…

Q: A refrigerator uses refrigerant-134a as the working fluid and operates on the vapor-compression…

A: Answer: The comparison of actual cycle with the ideal vapor compression refrigeration cycle is shown…

Q: A refrigerantion cycle with R-134a as its working fluid is to maintain the refrigerated space at −10…

A: Solution: The correct answer with necessary explanation is given below:

Q: A refrigerated room is kept at -27°C by a vapor-compression cycle with R-134a as the refrigerant.…

Q: 3. A refrigerator uses refrigerant-134a as the working fluid and operates on the ideal vapor-…

Q: Consider an actual vapor-compression refrigeration cycle. R-134a enters the compressor as…

Q: As a new engineer at CoolTech, you have been assigned to evaluate the performance of a cutting-edge…

A: Let's analyze this ideal vapor compression cycle for the refrigeration unit using R-134a as the…

Q: An ideal gas refrigeration cycle using air as the working fluid operates between the pressure limits…

Q: A refrigeration system with R134a as the working fluid is used to maintain a space at 25°C by…

Q: HFC-134a is the working fluid of a steady-flow Carnot refrigerator. The refrigerant enters the…

Q: workin refrigerant-134a operating on the ideal vapor-compression refrigeration cycle is to maintain…

Q: Refrigeration system operates on a vapor-compression cycle with R-134a as the working fluid. The…

A: To solve this problem, we need to determine the key properties and energy transfers in a…

Q: A heat pump using refrigerant-134a heats a house by using underground water at 8°C as the heat…

A: Refrigerant=R134aUnderground water temperature, TL=8oCThe rate of heat loss from the house, QH=60000…

Q: oper vapor compression refrigeration cycle. The evaporator and condenser pressures are 200 kPa and…

Q: An air conditioner using refrigerant-134a as the working fluid and operating on the ideal…

Question

vapor-compression
A water cooler based on the
refrigeration cycle uses refrigerant R-
134a as the working fluid, and the refrigerator operates in 35°C surroundings. The
condenser and evaporator pressures are 1.2 MPa and 180 kPa, respectively, and the
isentropic efficiency of the compressor is 80%. The air conditioner is being used to cool
a 6 liter/minute (LPM) stream of liquid water from 35°C down to 1°C. Find the power
input needed to drive the compressor (answer: 5.63 kW).
Use Cengel's R-134a tables posted on Canvas to model the refrigerant.
Expansion
Valve
Tour 1°C
0
35°C
Surroundings
QCONDENSER
Condenser
1.2 MPa
Evaporator
180 kPa
EVAPORATOR
6 LPM of Water
Compressor
TIN = 35°C
W COMPRESSOR

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

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 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

A refrigeration system with R134a as the working fluid is used to maintain a space at 25°C by absorbing heat from water entering the evaporator at 50°C with atmospheric pressure at a rate of 0.065kg/s and exiting at 40°C. The compression has an isentropic efficiency of 75%. The refrigerant exits the evaporator at 20°C with 0.5542 MPa, while the condenser outlet temperature is 3.8°C. How can I do this by DWSIM, I barely know the program but I did not learn how to use it properly and watching videos I still have doubts.
An air conditioner using refrigerant-134a as the working fluid and operating on the ideal vapor-compression refrigeration cycle is to maintain a space at 36.00°C while operating its condenser at 1600 kPa. Determine the COP of the system when a temperature difference of 4.000°C is allowed for the transfer of heat in the evaporator. (Take the required values from saturated refrigerant-134a tables.) (Round the final answer to three decimal places.) The COP of the system is
Consider an ice-producing plant that operates on the ideal vapor-compression refrigeration cycle and uses refrigerant-134a as the working fluid. The refrigeration cycle operating conditions require an evaporator pressure of 180 kPa and the condenser pressure of 1400 kPa. Cooling water flows through the water jacket surrounding the condenser and is supplied at the rate of 250 kg/s. The cooling water has a 10°C temperature rise as it flows through the water jacket. To produce ice, potable water is supplied to the chiller section of the refrigeration cycle. For each kg of ice produced, 333 kJ of energy must be removed from the potable water supply. (Take the required values from saturated refrigerant-134a tables.) Determine the mass flow rate of the refrigerant, in kg/s. Take cp of water as 4.18 kJ/kg·K. (You must provide an answer before moving on to the next part.) The mass flow rate of the refrigerant is _________kg/s.
An air conditioning unit operates on the simple refrigeration cycle using R-134a as the working fluid. The pressure bounds for the cycle are 550 kPa and 1200 kPa. The refrigeration system is maintaining a home at 26°C while the outdoor temperature is 34°C. Electronic devices inside the home (TV, computer, etc.) dissipate heat at a rate of 1200 W, and the home gains thermal energy through the walls and windows at a rate of 220 kJ/min. There are also people in the home dissipating thermal energy at a yet-unknown rate. The refrigerant exits the condenser as a saturated liquid, exits the evaporator as a saturated vapor, and the compressor has an isentropic efficiency of 85%. Determine the total rate of heat dissipated by the occupants of the home if the compressor consumes power at a rate of 900 W.
Consider a 300 kJ/min refrigeration system that operates on an ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 140 kPa and is compressed to 800 kPa. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the quality of the refrigerant at the end of the throttling process, (b) the coefficient of performance, and (c) the power input to the compressor.
A refrigerator uses R-134a as the working fluid and operates on an ideal vapor compression cycle between 0.14 MPa and 0.8 MPa. If the mass flow rate of the refrigerant is 0.06 kg/s, determine (a) the rate of heat removal from the refrigerated space, (b) the power input to the compressor, (c) the heat rejection rate in the condenser, and (d) the COP.
Consider a gas refrigeration system with air as the working fluid. The pressure ratio is 5.5. Air enters the compressor at 0 ◦C. The high-pressure air is cooled to 35 ◦C by rejecting heat to the surroundings. The refrigerant leaves the turbine at −95 ◦C and then it absorbs heat from the refrigerated space before entering the regenerator. The mass flow rate of air is 0.55 kg/s. Assuming isentropic efficiencies of 90% for both the compressor and the turbine, determine (a) the effectiveness of the regenerator, (b) the rate of heat removal from the refrigerated space, and (c) the COP of the cycle. Also, determine (d) the refrigeration load and the COP if this system operated on the simple gas refrigeration cycle. In this cycle, take the compressor and turbine inlet temperatures to be 0 and 35 ◦C, respectively, and use the same compressor and turbine efficiencies. Use constant specific heat for air at room temperature with cp = 1.005 kJ/kg·K and k = 1.4
A vapor compression refrigeration cycle uses refrigerant-134a as its working fluid. The condenser pressure is 800 kPa and the evaporator temperature is -20 C. The compressor has an isentropic efficiency of 80 percent. The mass flow rate is 1.0493 kg/s. The enthalpy at the isentropic exit state of the compressor is h2s = 271.9 kJ/kg. In the question that follows, select the answer that is closest to the true value. What is the power going to the compressor in units of kW?
A gas refrigeration system utilizing air as the working fluid possesses a pressure ratio of 3. The air is directed into the compressor at 5°C. The high- pressure air is then cooled down to 40°C by rejecting heat to the ambient environment. The refrigerant exits the turbine at -85°C and subsequently absorbs heat from the cooling area prior to its entry into the regenerator. The mass flow rate of air is 0.45 kg/s. Given that the isentropic efficiencies are 82 percent for the compressor and 87 percent for the turbine, and using constant specific heats at ambient temperature, find: (a) The effectiveness of the regenerator. (b) The rate at which heat is extracted from the cooling area. (c) The Coefficient of Performance (COP) of the cycle.
Consider a two-stage cascade refrigeration system operating between the pressure limits of 0.8 and 0.14 MPa. Each stage operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where both streams enter at about 0.4 MPa. If the mass flow rate of the Refrigerant through the upper circle is 0.24 kg/s, determine (a)the mass flow rate of the refrigerant through the lower cycle, (b)the rate of heat removal from the refrigerated space and the power input to the compressor, and (c)the coefficient of performance of this cascade refrigerator. Answers: (a) 0.195 kg/s, (b) 34.2 kW, 7.63 kW, (c) 4.49
A vapor-compression refrigeration cycle with refrigerant-134a as the working fluid is used to maintain a space at -13°C by rejecting heat to ambient air at 27°C. R-134a enters the compressor at 100 kPa superheated by 6.4°℃ at a rate of 0.05 kg/s. The isentropic efficiency of the compressor is 85 percent. The refrigerant leaves the condenser at 39.4ºC as a saturated liquid. Determine a) the rate of cooling provided b) the COP of the system c) the minimum power input required