An engineer designed an refrigerator working between 300 K and 550 K. Determine the COP of the refrigerato
Q: A heat engine receives heat from the source at 1400°C and rejects heat to a sink at 40°C The thermal…
A: Given:TH=1400°C =1673 KTL=40°C =313 Kηt=0.55
Q: #2. Consider an electric refrigerator in your kitchen. Determine Q and W interactions with the…
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Q: Two refrigerators A and B operate in series. Both refrigerators absorb energy at same rate of 1.5…
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Q: An air conditioner on a summer day removes heat steadily from a house at a rate of 750 kJ/min while…
A: In summerHeat removes from a house, Qe=750 kJ/min=75060kW=12.5 kWElectric power input to air…
Q: The adiabatic compressor in a refrigerator compresses saturated R-134a vapor at -10.0°F to 200 psia.…
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Q: Q 1- A Carnot refrigerator operates in a room in which the temperature is 22°C and consumes 2 kW of…
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Q: In figure shown, (E) is a heat engine with efficiency of 0.4 and ( R) is a refrigerator. It is given…
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Q: 12. A 17-V storage battery delivers current at the rate of 56 A. In a 29-min period, the heat lost…
A: Given data:- Voltage =17V Current =56A Time = 29 min Heat loss =90.74 kJ
Q: Q5// A Carnot refrigerator operates in a room in which the temperature is 25°C. The refrigerator…
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Q: The power required to drive the compressor in a Carnot refrigerator is 55 hp. It operates between…
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Q: 4. A heat engine receives heat from a heat source at 1200°C and has a thermal efficiency of 40…
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Q: the following is example for closed system? a. Internal combustion engine b. Gas turbine c.…
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Q: 27.) A 13-V storage battery delivers current at the rate of 50 A. In a 27-min period, the heat lost…
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Q: 2. Consider a room that is initially at the outdoor temperature of 20°C. The room contains a 100-W…
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Q: b) On a winter day when the average outdoor temperature remains at about 4°C, the house is estimated…
A: Heat Transfer: The transfer of heat from one body to another body due to the difference in…
Q: A Carnot engine operating between temperature limits of 10000F and 5000F produces 80,000 ft-lbf of…
A: Given Tmax = 10000 F Tmin = 5000 F W = 80, 000 ft lbf To find Heat rejected Thermal efficiency
Q: A household refrigerator with a COP of 1.8 removes heat from the refrigerated space at a rate of 90…
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Q: A carnot refrigerator operates between the temperatures of -40° C and 40°C The COP of the…
A: Given, Lower temperature in carnot cycle = TL = -40 oC = 233 K Higher temperature in carnot cycle =…
Q: In figure shown, (E ) is a heat engine with efficiency of 0.4 and ( R) is a refrigerator. It is…
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Q: 2 Find the thermal efficiency of a Carnot engine whose hot and cold bodies have temperatures of…
A: Given:Cold body tempearture,TL=15οC=(15+273)K=288KHot body temperature,TH=154οC=(154+273)K=427K
Q: An inventor claims that he can generate power from the hot spring of Ain Akisfah in Rustaq which its…
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Q: Two reversible engines R1 and R2 are connected ins series between a heat source S and a cold body…
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Q: What is a K system?
A: given: What is a K system?
Q: A condenser of a refrigeration system rejects heat at a rate of 120 kW, while is compressor consumes…
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Q: A refrigerator has a broken light bulb inside that is constantly turned on even when the…
A: Given:Power of light bulb, P=20 WCoP of refrigerator=1.4Electricity cost=12/ kWh
Q: A heat engine operates between 1625 C and 27 C and receives 400 kJ of heat. The maximum efficiency…
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Q: Find the refrigerating effect in a refrigerator if the COP is 3 and heat rejected is 40 kW.
A: Given data, Q1 =40kW COP=3
Q: The power required to drive the compressor in a Carnot refrigerator is 62 hp. It operates between…
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Q: Q.4/ A combination of a heat engine driving a heat pump, the heat energy supplied to the heat engine…
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Q: b) On a winter day when the average outdoor temperature remains at about 4°C, the house is estimated…
A: Heat pump: The device that is used for transfer heat is called a heat pump. Refrigerators and air…
Q: For each of the three heat pumps described, state whether it violates the First Law of…
A: Given Data: The temperature of the cold reservoir is TL=300 K. The temperature of the hot reservoir…
Q: An irreversible heat pump with COP of 2.4 is used to heat water to 80°C for cleaning (b) purposes.…
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Q: . Find the COP of the system with low temperature of 200 R and high temperature of 300R.
A: T1 = 200R = 111.111 K ( T1= Low temperature ) T2 = 300R = 166.667 K ( T2= High temperature ) Find…
Q: Qu A heat engine operates between 1625 C and 27 C and receives 400 kJ of heat. The maximum…
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Q: An irreversible heat pump with COP of 2.4 is used to heat water to 80°C for cleaning purposes. This…
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Q: A refrigerator operating between -5°C and 27°C has the capacity of 80 tons. Determine the number of…
A: Write the given data in the problem. m=10 kgT1=27°CT2=0°C Here, m is the mass of the refrigerator,…
Q: A claim states that a heat pump has been invented that requires work to be done on the system of…
A: It is impossible device , because net work done is greater than heat supplied.
Q: Derive the thermal efficiency of a heat engine from the 1st law of thermodynamics. Since the process…
A: Write the basic equation for the first law of the thermodynamics. ΔQ = ΔU + W ........... (1)…
Q: An inventor claims to have a solar powered heat pump that receives energy as heat from the sun at…
A: COP of given heat pump=Q2WNow,W=10KWQ1=7KWNow,Q1+W=Q2⇒Q2=(10+7)=17KW⇒COP=1710KW=1.7Since COP>1…
Q: Water is being cooledd in a closed container while being stirred by a paddle wheel. During this…
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Q: /Two Carnot engines A and B are operated in series. The first one A receives heat at 1800 K and Qu1…
A: Given data: Source temperature for engine A, T1 = 1800 K. Sink temperature for engine B, T3 = 200…
Q: The power required to drive the compressor in a Carnot refrigerator is 48 hp. It operates between…
A: Given data: TL=-6°C=267 KTH=39°C=312 K Need to determine the coefficient of performance.
Q: An electric home stove with 3 burners and microwave is used in preparing a meal as follows. Burner…
A: Given:Number of burners=3,Number of microwave=1,Time to use burner 1, t1=20 minutesTime to use…
Q: Two Carnot refrigeration A and B operate in series. The refrigerator A absorbs energy at rate…
A: Given data Two Carnot refrigeration A and B operate in series. Refrigerator A absorbs energy at rate…
Q: The coefficient of performance of a Carnot refrigerator working between 30°C and 0°C is (1)10 (2)1…
A: Coefficient of performance for energy performance ratio of refrigerator is defined as the ratio of…
Q: Q/ Two Carnot refrigerators operate in series between two reservoirs maintained at 20°C and 200°C,…
A: Thermal efficiency is a ratio of the heat rejected from the system and heat supplied to the system.…
Q: Use the virtual work theory to calculate angle that keeps the system in equilibrium. Assign two…
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- The operating condition for the single compressor in a household refrigerator is the lowest box temperature, which is typically A. 0F B. -20F C. 20F D. 40FA refrigerator working between 283 K to 310K and extracting 340 J of heat. How much work required to run the refrigerator.4.46. An ideal Solvay refrigerator utilizing nitrogen as the working fluid operates between 0.101 and 2.02 MPa with the compression handled isothermally at 300 K. The maximum tem- perature in the cold space is 190 K. If the work obtained from the expansion process is used to reduce the work of compression, determine the net work per unit mass compressed, the refrigeration effect per unit mass compressed, and the figure of merit for the refrigeration system. To simplify the calculations, it may be assumed that the mass of gas present in the regenerator during the expansion process is negligible compared to the mass of gas in the expansion volume.
- How much water at 0 degree Celsius can be frozen in a carnot refrigerator with COP of 50 if the work of the pump is 50 kJ? The refrigerator operates below freezing point of water. (Hint: heat rejected by the refrigerator is equal to the latent heat of fusion of water of m mass)Q/ Two Carnot refrigerators operate in series between two reservoirs maintained at 20°C and 200°C, respectively. The energy output by the first refrigerator is used as the heat energy input to the second refrigerator. If the COPS of the two refrigerators are the same, what should the intermediate temperature be?1. A Carnot refrigerator operates between two reservoirs, one at 250K and the other at 300K. It is claimed that the refrigerator has a COPr of 6. Determine: a. If the energy removed from the low temperature reservoir is 160 kJ, then what is the energy delivered to the high temperature reservoir and how much work must be put into the system. b. Is the refrigerator even possible?
- The temperature inside a Carnot refrigerator is8.34°C. What is the high temperature, Th, in Celsius needed to give this refrigerator a coefficient of performance of 9.43?3- Three refrigerators in Figure 4, shown with the designations A, B, and C are working in a temperature range of TH=32 °C and T1=3 °C. Among these three refrigerators, while the first refrigerator (A) is known to be a reversible, on the other hand, the other two (B and C) are known to be an irreversible and an impossible type, respectively. So, a) Calculate the COPR value of the refrigerator A under these temperature limits. b) Based on your Carnot calculations, give a COPR value for B which can be accepted as an irreversible refrigerator. And discuss why the value that you had chosen can be chosen as an irreversible refrigerator COP value. c) Again, based on your Carnot calculations, give a COPR value for C which can be accepted as an impossible refrigerator. And discuss why the value that you had chosen can be chosen as an impossible refrigerator COP value. Warm environ ment at Ty-32 °C Irreversible refrigerator (Impossible refrigerator Reversible refrigerator A B Cool refrigerated…The refrigerator removes heat at the rate of 5000 kJ/hr at 5 °C. It rejects the heat at 35 °C. COP of the machine is 3. The power needed to operate the refrigerator is 0.1499 1.389 8.33 0.463
- A refrigerator has a coefficient of performance equal to 7. If the refrigerator absorbs 137.5 J of thermal energy from a cold reservoir in each cycle, find a. the work done in each cycle in Joules, and b. the thermal energy expelled to the hot reservoir in Joules.WHAT IS THE COEFFICIENT OF PERFORMANCE OF THE REFRIGERATOR? (please only answer if you are 100% correct)(show work)Pineapple fruits with a mass of 500 kg are supplied to a cold storage at 20 C. The cold storage is maintained at 5 C and the fruits get cooled to a storage temperature in 10 hours. The latent heat of freezing is 105 kJ/kg and the specific heat of fruit is 1.256 kJ/kg.K. Find the refrigeration capacity of the plant.