A steam power plant receives heat from a furnace at a rate of 280 GJ/h. Heat losses to the surrounding air from the steam as it passes through the pipes and other components are estimated to be about 8 GJ/h. If the waste heat is transferred to the cooling water at a rate of 145 GJ/h, determine (a) net power output and (b) the thermal efficiency of this power plant.

Q: (a) What is the best coefficient of performance for a refrigerator that cools an environment at…

A:

Q: A gasoline engine has a power output of 200 kW. Its thermal efficiency is 35.0%. (a) How much heat…

A: Power Output of engine, P=200kWThermal efficiency,η=35%=0.35

Q: You happen to leave the door to your 27.9 ft³ refrigerator (rated at 458 W) open long enough that…

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Q: A heat engine is being designed to have a Carnot efficiency of 64% when operating between two heat…

A: Carnot efficiency=1-TCTH=TH-TCTH TC= temperature of cold reservoir=16 °C=273.15+16=289.15 K…

Q: A gas engine absorbs 2500 kJ of heat in a 5.5 s heat cycle. The amount of heat exhausted per cycle…

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Q: a) A heat engine operates at a 40% efficiency. The heat input is 20,000 J. How much work does this…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: As an engineer in an automotive company, you are assigned to design an engine with the highest…

A: The main thermodynamic principle to design the heat engine is the 2nd Law of Thermodynamics. The…

Q: Let's say that a fridge operates between temperatures of 4°C and 31.0°C. A particular fridge has a…

A: T1 = 4oC T2 = 31oC COP = 4.50

Q: A heat engine is performing work at the rate of 30,000 Watts with 25% efficiency. At what rate is…

A: Efficiency of heat engine is,  ηHeat engine=work doneheat expelled                =work…

Q: 100 mL of water at 20.0 °C is placed in the freezer compartment of a refrigerator with a coefficient…

A:

Q: A heat engine does 30 JJ of work per cycle while exhausting 30 JJ of waste heat. What is the…

A: Given in question - Work done per cycle (W) = 30 Joule                                   Heat…

Q: An electrical power station uses 1.48  1014 J of heat input with an efficiency of 34.7%. (a) How…

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Q: The ice maker inside a refrigerator makes ice cubes at 0.0°C from water that is at 17.2°C when it…

A: Given data The temperature of the water is Tw=17.2°C. The temperature of the ice is Ti=0°C. The…

Q: A container with 41 g of a certain liquid (c = 4171 J/kg · °C, Lv=2224 kJ/kg) at 22 °C is heated up…

A:

Q: heat engine operates between a hot reservoir at 790°C and a cold reservoir at a temperature of 15…

A:

Q: The second principle of thermodynamics implies that (a) thermal energy cannot be entirely converted…

A: Correct option is A second law of thermodynamics states that , "It is impossible to construct a…

Q: A new inventor claims to have invented a new type of steam engine that operates between the…

A: Given : TL = 120 ℃  TH = 550 ℃

Q: A heat engine receives heat in the amount of Q,= 525 kJ from a high temperature thermal reservoir…

A: Given Amount of heat received by the heat engine Qh = 525 kJ Net work done by the heat engine Wnet…

Q: Air (ρ = 1.26 kg/m3 ) enters a compressor at a rate of 8.50 m3 /min and a pressure of 101.325 kPa,…

A: Given, ρ = 1.26 kg/m3 compressor at a rate of 8.50 m3 /min  pressure 618 kPa

Q: An often-overlooked consequence of power generation is “thermal pollution” from excess heat…

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Q: During each cycle, a refrigerator ejects 645 k) of energy to a high-temperature reservoir, and takes…

A: Given :      Heat ejects to high - temperature reservoir, QH = 645 kJ      Heat takes from low -…

Q: Q. 52: A heat engine converts 1/6th of input heat into work. When temperature of sink is reduced by…

A: Temperature of source (T1)=?Given-dW=external work donedQ=heat supplied to system

Q: An ideal, reversible heat pump is taking heat from the outside air at -11.5 °C and discharging it…

A: Given : Reversible heat pump is taking heat from the outside air at -11.5 °C.…

Q: The “Energy Guide” label on a washing machine indicates that the washer will use $85 worth of hot…

A: Given,

Q: Q. 52: A heat engine converts 1/6th of input heat into work. When temperature of sink is reduced by…

A:

Q: If the plant operates at 50.0% of its maximum efficiency and its power output is 1.23 × 108 W, at…

A: The given data are: TH=540 KTL=313 KQH=1.23×108 W Here, TH is the higher temperature, TL is the…

Q: What is the coefficient of performance of an ideal heat pump that pumps heat from a cold temperature…

A: given,TL=-23.9°C     =249.25 KTH=32°C      =305.15 Kcoefficient of performance:COP=THTH-TL

Q: On a hot summer day, 3.73  106 J of heat transfer into a parked car takes place, increasing its…

A: Given:  Heat exchanged, dQ=3.73×106 J Initial temperature, Ti=31.2°C Final temperature, Tf=50.6°C…

Q: A 53-kg mountain climber, starting from rest, climbs a vertical distance of 764 m. At the top, she…

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Q: A heat pump maintains a dwelling at 68°F. When operating steadily, the power input to the heat pump…

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Q: A heat engine operates under the following conditions: heat exchanged via exhaust Qc = -2500 J, work…

A: Given:- heat energy = Qc = -2500 J W = -1000 J

Q: 0.90 L of 25 °C water is placed in a refrigerator. The refrigerator's motor must supply an extra 9.0…

A: Approach to solving the question:Please see attached photos for detailed solutions. thank you.…

Q: A power plant burns coal and generates an average of 615.0 MW of electrical power while discharging…

A: Given Information:- Electrical power generated by the plant is E=615.0 MW Waste heat H=1020.90 MW…

Q: A certain nuclear power plant has an electrical power output of 435 MW. The rate at which energy…

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Q: A certain coal-fired power plant has a rated power capacity of P = 850 MW. The output of this plant…

A: Given that :- Power capacity , P=850 MW  Output , W=0.26Q11

Q: A certain engine extracts 1300 Jof heat from a hot temperature reservoir and discharges 700 Jof…

A:

Q: Q1: A particular power plant operates with a heat-source reservoir at 370°C and a heat sink…

A: Given data, Temperature of the source = 3700C Temperature of the sink = 500C

Q: 52 A heat engine converts 1/6th of input at into work. When temperature of sink is uced by 62 K the…

A: To find the temperature of the source in above heat engine

Q: A 3 ohm heater takes 6 amperes while submerged in 1200 grams of water contained in a vessel with a…

A: Given:- m= 1200 g = mass of water  mo= 200 g = water equivalent of vessel S= 4.184 J/g-°C = specific…

Q: A Carnot heat engine receives 700kJ/s from a heat source and produces 430 kW of power. At what rate…

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Q: The average electricity consumption of a house in Gainesville is known to be 1,036 kWh in a month…

A: Given that: E=1036 kWh in monthAverage output power per day, Pav=1036 kWh30 day=34.53…