The co-efficient of performance of a refrigerator wor ing on a reversed Carnot cycle is 4. The ratio of t highest absolute temperature to the lowest absolu temperature is
Q: The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal…
A: NOTE:- As per our company guidelines we are supposed to answer only 3 sub-parts. Kindly repost other…
Q: A refrigeration system operates on an ideal vapor compression using R-12 with an evaporator…
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Q: Refrigerant 134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and -5 ° C…
A: The above question is based on vapor compression of refrigeration system.
Q: Example 25.6 A refrigerator operating on a standard vapour compression cycle has a coefficient of…
A: Given: The COP of refrigerator, COP = 6.5 The compressor power, W = 50 kW The condenser temperature,…
Q: simple-cycle gas turbine plant has compressor and turbine efficiencies of 0.88 and 0.91,…
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Q: The turbine and compressor are adiabatic. Determine for this cycle, whether it is Perpetual Motion…
A: Given, The above system consist of combustion chamber, turbine and compressor. The heat is…
Q: In order for a Carnot (reversible) power cycle to achieve 80% efficiency with a hot reservoir a.…
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Q: Derive an expression for the COP of a completely reversible refrigerator in terms of the thermal…
A: Let the thermal energy of the reservoir is TL and TH. The efficiency of a refrigerator is defined…
Q: 4. A reversed Carnot cycle is used for refrigeration and rejects 1000kW of heat at 67C while…
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Q: Refrigerant 134a enters a refrigerator compressor as superheated vapor at 0.20 MPa and -5 ° C at a…
A: Solution: T-s and P-h diagram of the process is shown in the figure below, Now we can find the…
Q: In a carnot cycle engine the volume after adiabatic compression is 8.5 % of that before compression.…
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Q: With ph, ts diagram A refrigerator based on ideal vapor compression cycle operates…
A: GivenT1=-20oCT2=40oC
Q: 2. A reverse Carnot cycle requires 3 hp and extracts energy from the lake to heat a house If the…
A: Given data: W˙=3 hp=2.2371 kWTH=70°F=294.261 KQH=2110 kJ/min=35.2 kJ/s Need to determine the…
Q: A canot engine receives 130 Btu of heat from a hot reservoir at 700 °F and rejects 49 Btu of heat.…
A: Given:- Carnot cycle T1=700°F=644.11K Q1=130 Btu Q2=49 Btu To find:- a) Thermal efficiency b)…
Q: 2. 0.23 kg of gas is taken through a Carnot cycle whose temperature limits are 300 °C and 50 °C. If…
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Q: A Camot heat pump with refrigerant-134a as the working fluid is used to keep a room at 78°F by…
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Q: As shown in the figure below, a reversible power cycle receives energy QH by heat transfer from a…
A: Answers: η = 63.63 % QH = 1610 kJ , QC = 610 kJ TH = 789.08°F TC = 327°C
Q: Q2// A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The…
A: Find the power output and source temperature .
Q: 2. A Rankine cycle runs with a water boiler at 4 MPa and the cycle has the highest and the owest…
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Q: Show a derivation of final temperature of dual cycle in terms of initial temperature and ratios
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Q: 6-A heat engine receives 6kW from 250°C source and reject heat at 30°C. Examine each of three cases…
A: Heat input, Qin= 6 kW= 6000 W Source temperature, T1= 250∘C= 250+ 273 K= 523 K Sink temperature, T2=…
Q: The air conditioner (a kind of vapour-compression refrigerator) in a 1500-cc car, which works on a…
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Q: A Carnot cycle operates between source and sink temperatures of 260°C and – 17.8°C. If the system…
A: Given data Source temp (Th) = 260oC = 260 + 273 = 533 K Sink Temp…
Q: An engine working on the Carnot cycle receives heat from a source at 1200°C and rejects heat to a…
A: Given data: TH=1200°C=1473 KTL1=180°C=453 KTL2=40°C=313 KP1=15 kW
Q: 114. The efficiency of a Carnot engine is 0.75. It cycle direction is reversed, COP of reversed…
A: Given data: Efficiencyη=0.75 Need to determine the COP of the reversed Carnot cycle.
Q: The air conditioner (a kind of vapour-compression refrigerator) in a 1500-cc car, which works on a…
A: Given Data: Work done of Rankine cycle is: W=m˙Rh2-h1=1.5 kJ/s Pressure of air at point 1 is:…
Q: 5 The efficiency of a Carnot Cycle can be determined using only the hot and cool temperature True…
A: Different cycles used in thermodynamics are: Carnot cycle Rankine cycle Brayton cycle Otto cycle…
Q: An air refrigeration system operating on a closed cycle is required to produce 14.2 Tons of…
A: As per guidelines i can answer only first 3 parts. Given conditions ; Q = 14.2 Tons Refrigeration…
Q: The Reversed Carnot Cycle is used to run a food production company's refrigeration system. The…
A: GIVEN DATA LOWER TEMPRATURE = -14'C HIGHER TEMPRATURE = 52'C CAPACITY = 24 tons We have to find all…
Q: 3. A REVERSED CARNOT CYCLE IS USED FOR REFRIGERATION AND REJECTS 200 000 Btu/min OF HEAT AT 152.6F…
A: GIVEN DATA- Q2=200000 Btu/min TH=152.6'F TL=450.6'R WE HAVE TO FIND COP , CAPACITY , WORK
Q: b) A heat pump operates on a Reversed Carnot cycle with a COP of 6.5. The heat pump keeps a space at…
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Q: The COP (y) of a reversed Carnot cycle is 5.35 when refrigera AS D0.38 kJ/K during the isothermal…
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Q: Carnot heat engine which produces 10 kJ of work for one cycle has a thermal efficiency of 50…
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Q: In a Carnot cycle operatin adiabatic expansion ratio a. The thermal efficien b. The work c. The heat…
A: INTRODUCTION : The carnot cycle is the theoretical cycle, which gives maximum work output with…
Q: 6- 6-A turbine receive steam at 1.38 bar, 0.143 m²/kg internal energy 2590 kJ/kg and 30 m/s. At…
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Q: A simple vapor compression cycle develops 15 tons of refrigeration using ammonia as refrigerant and…
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Q: The air conditioner (a kind of vapour-compression refrigerator) in a 1500-cc car, which works on a…
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Q: Q4. a) Why is the reversed Carnot cycle executed within the saturation dome not a realistic model…
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Q: A Carnot heat pump with refrigerant-134a as the working fluid is used to keep a room at 78°F by…
A: (a) from the energy balance of water and the refrigerant we can calculate the mass flow of…
Q: The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal…
A: Given m=8 lbv1=9 ft3P1=300psi=300*144 lb/ft2v2v1=2⇒v2=2v1=18ft3T3=T4=90°F=305.37 Kfor process…
Q: An air-conditioning system operating on the reversed Carnot cycle is required to remove heat from…
A: Given Data: An Air Conditioning system operating on reversed Carnot cycle. Lower Temperature…
Q: 4. In a Carnot cycle, the isothermal process in a boiler and a condenser (
A: Note: As per our guidelines, we are allowed to answer one question at time. Please, resubmit…
Q: In a Brayton cycle that operates between temperature limits of 300K and 1773K with k=1.4, determine…
A: Given data: T1=300 KT3=1773 Kk=1.4 Need to determine the temperature at the end of the compression…
Q: The temperature inside a kitchen freezer is a constant 256 K, while the temperature of the air in…
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Q: The coefficient of performance of a reversed carnot cycle is 5.35 when refrigeration is done at 255…
A: Write the given data with suitable variables. COP=5.35TL=255 KS=0.38 kJ/K
Q: What is the COP of the Carnot refrigerator if the COP of the Carnot heat pump is 2.3 where two…
A: System is a definite area under our consideration. The state of the system is defined as property…
Q: The quadlateral cycle concept offers appropriate limits in estimating the theoretical maximum for…
A: Given data: Air stream mass flow rate = 0.2 kg/s Maximum Temperature of air 300o C Temperature to…
Q: The air conditioner (a kind of vapour-compression refrigerator) in a 1600-cc car, which works on a…
A:
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- Calculate the thermal efficiency of a Carnot cycle heat engine operating betweenreservoirs at 300℃ and 45℃Show a derivation of final temperature of dual cycle in terms of initial temperature and ratiosIn a carnot cycle engine the volume after adiabatic compression is 8.5 % of that before compression. The sink temperature is 30 ℃. Determine: thermal efficiency.
- Consider a steam power plant, which operates under the model ofsimple Rankine cycle between the pressure limits of 2 MPa and 75 kPa. Determine:a) The maximum thermal efficiency, in %, if the temperature at the boiler outlet is350°CProvide the complete solution and diagram for this problem. A reversed Carnot cycle operating in a heat pump has an evaporator temperature of -4oC andcondenser temperature of 50oC. Find the performance factor if it will operate in a heat pump. A. 4.45 B. 3.45 C. 6.21 D. 5.9The air conditioner (a kind of vapour-compression refrigerator) in a 1600-cc car, which works on a pseudo-ideal reversed Rankine cycle, uses R-134a, the isentropic rotary-com-pressor of which consumes power at a rate of 1.5 kJ/s bringing the R-134a from 2.017 bar to 12 bar by compression. The cold space is a heat exchanger (using a hamster wheel as a blower) that cools atmospheric air from the outside temperature of 303 K down to 283 K and blows it into the car. Assume the start of compression process is state point 1. The refrigerant at evaporator exit is dry saturated vapour and saturated liquid at the condenser exit. Draw the schematic and T-s diagrams for the cycle. (a) What is the mass flow rate of the R-134a ()? (b) What is the low-temperature heat transfer rate? (c) How much is the mass flow rate of air () at 283 K? For air, take cP = 1.004 kJ/(kg·K).
- What is the COP of the Carnot refrigerator if the COP of the Carnot heat pump is 2.3 where two cycles are operation between identical reservoirs?Derive an expression for the COP of a completely reversible refrigerator in terms of the thermal energy reservoir temperatures, TL and TH.Question An ammonia ice plant operates between a condenser temperature of 35 ℃ and an evaporator temperature of -15℃. It produces 10 tons of ice per day from water at 30℃ to ice at -5℃. Assuming simple saturation cycle, using only tables of properties of ammonia, determine:(a) The horsepower of the compressor motor if the adiabatic efficiency of the compressor is 0.85 and mechanical efficiency is 0.95; and(b) The theoretical and actual COP
- Find the maximum thermal efficiency possible for a power cycle operatingbetween 1200 oF and 225 oF?A Carnot cycle operates under the saturation dome of water in between the pressure of 7MPa and 10kPa. During the heat addition process, water changes from saturated liquid to saturated vapor. What is the network output [kJ/kg]?A heat engine is operated between temperature limits of 1370 C and 260 C. Engine supplied with 14142 kJ/kW-h. Find the Carnot cycle efficiency.