Determine the COP of a heat pump that supplies energy to a house at a rate of 8000 kJ/h for each kW of electric power it draws. Also, determine the rate of energy absorption from the outdoor air.

Q: An air conditioner removes heat steadily from a house at a rate of 750 kJ/min while drawing electric…

A: Given:  Heat removed, Qc = 750 kJ/min = 12.5 kJ/s Work, W = 6 kW = 6 kJ/s

Q: Can improved engineering and materials be employed in heat engines to reduce heat transfer into the…

A: Heat engine works in a cycle. Second law of thermodynamics implies that no system can entirely…

Q: A C a d >V the path acb, 90.0 J of heat flows into the system and 50.0 J of work is done by the…

A: GIVEN :Along acb,  heat into system q =90 J Work done W  by system W =50J Along adb, Work done by…

Q: Refrigerant-134a enters the condenser of a residentialheat pump at 800 kPa and 50C at a rate of…

A: Since you have uploaded a question with multiple sub-parts, we will solve the first three sub-parts…

Q: A thermodynamic system undergoes a process in which its internal energy decreases by 600 J. Over the…

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Q: calculate the change in internal energy of a system if 300J of heat energy is added to it and if the…

A: Let the heat energy added to the system is denoted by q and the work done by the system is W.

Q: Suppose 200 J of work is done on a system and 70.0 cal is extracted from the system as heat. In the…

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Q: A 38% efficient power plant puts out 850 MW of electricalpower. Cooling towers take away the exhaust…

A: The power exhaust from the power plant is, Qc=input power-output powerQc=8500.38-850Qc=1386.84MW

Q: A Carnot refrigerator exhausts heat to the air, which is at a temperature of 25 °C . How much power…

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Q: Consider a room that is initially at the outdoor temperature of 20 C. The room contains a 60-W light…

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Q: Explain why heat pumps do not work as well in very cold climates as they do in milder ones. Is the…

A: The coefficient of performance of the heat pump is Suppose the temperature of the hot region is T1…

Q: During a compression process, work of 20 Kj is done on a system while the system transfers 13 Kj of…

A: According to 1st law of thermodynamics, Here, ΔU, Q and W represent the change in internal energy,…

Q: A Carnot engine operates between 145°C and 16°C. How much ice can the engine melt from its exhaust…

A: Given:  The intial temperature of the Carnot engine is 145oC The final temperature of the engine is…

Q: A thermodynamic system undergoes a process in which its internal energy decreases by 500 J. Over the…

A: The expression for the required transferred energy is,

Q: 64. GO The inside of a Carnot refrigerator is maintained at a temperature of 277 K, while the…

A: Given data The temperature inside the refrigerator Tl = 227 K. The temperature inside the kitchen is…

Q: Should the cooling fluid for an engine have a large or a small heat capacity? Explain.

A: Given: Should the cooling fluid for an engine have a large or a small heat capacity? Explain.

Q: The ground temperature a few meters below the surface is fairly constant throughout the year and is…

A: It has been observed that the temperature below the ground is more stable than the temperature above…

Q: At a power plant that produces 1 GW (109 watts) of electricity, the steam turbines take in steam at…

A: Given: The temperature of steam is 500 degrees Celcius. The temperature of waste expelled is 20…

Q: The COP of a refrigerator decreases as the temperature of the refrigerated space is decreased. That…

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Q: When gasoline burns in an automobile engine, the heat released (342 J) causes the products CO2 and…

A: Given  Heat release ,Q = - 342 J  Work done by gases  =W =  474 J

Q: It is possible to float heat engines on the ocean and extract some of the internal energy of the…

A: The thermodynamics second law tells that the heat (or energy) flows from the body which is at a…

Q: Unreasonable Results - What is wrong with the claim that a cyclical heat engine does 4.00 kJ of work…

A: The net transfer of heat to the environment is, ∆Q=Qin+Qout=24.0 kJ-16.0 kJ=8.0 kJ

Q: The inside of your refrigerator is approximately 0°C. Heat from the inside of your refrigerator is…

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Q: This problem compares the energy output and heat transfer to the environment by two different typ…

A: Given:- The normal efficiency of  η1= 32.16%  η2= 43.52% The same heat transfer into the engine in…

Q: - 2. (Ch. 18 Exercise 37 in Wolfson) During vigorous bicycling, the human body typically releases…

A: Given that- The rate of release of stored energy from food is 500 W  the rate of producing…

Q: When gasoline burns in an automobile engine, the heat released (336 J) causes the products CO2 and…

A: ΔU=?q=-336 JW=-463 J

Q: On a cold day, a heat pump absorbs heat from the outside air at -10°C and transfers it into a home…

A: Given value--- cold temperatures = - 10 degree C. Hot temperatures = 30 degree C. We have to…

Q: during isothermal process of an ideal gas whose internal energy only depends on its temperature does…

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Q: A carnot engine is operating at temperatures of 300K and 500K.If 14000J is absorbed by the engine,…

A: Given data: The higher temperature is TH=500 K. The lower temperature is TL=300 K. Heat absorbed is…

Q: She ice maker inside a refrigerator makes ice cubes at 0.0°C from water that is at 14.7°C when it…

A: Power = 244 WCoefficient of performance = 3.56 P = 244 * 3.56 P = 868.64 Wt = 24 hours t = 24 * 60 *…

Q: AN IDEAL REFRIGERATOR REMOVES HEAT AT THE RATE OF 0.10KW FROM ITS INTERIOR (+2C) AND EXHAUSTS HEAT…

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Q: A thermodynamic system undergoes a process in which its internal energy decreases by 460 J. Over the…

A: Given data :- Decrease in internal energy ∆U = -460 J Work done on the system W = -204 J

Q: Long cylindrical steel rods (r = 7833 kg/m3 andcp = 0.465 kJ/kg·8C) of 10-cm diameter are heat…

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Q: A real process may be nearly adiabatic if it occurs over a very short time. How does the short time…

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Q: Determine the COP of a refrigerator that removes heat from the food compartment at a rate of 5040…

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Q: An air conditioner removes heat steadily from a house at a rate of 750 kJ/min while drawin electric…

A: (a) Given that, The heat removed is given as Qc=750 kJmin×1 min60 sQc=12.5 kJs Work,  W=5.25…

Q: You perform maintenance on an engine, increasing its efficiency by 8.85 %.  How much more work is…

A: Work performed by engine is  W = 199.302 joules