Water enters the pump of a steam power plant as saturated liquid at 20 kPa at a rate of 45 kg/s and exits at 6 MPa. Neglecting the changes in kinetic and potential energies and assuming the process to be reversible, determine the power input to the pump.

Q: Q1(a) State the Second Law of Thermodynamics and write its mathematical equation. (b) (c) The Carnot…

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Q: B) An engine with an indicated thermal efficiency of 50% and mechanical efficiency of 45% consumes…

A: Given:-             mf =15 kg/h  = 153600 kg/secPmean = 6.5 barv = 13 m/sηi = 50%ηmech = 45 %CV = 45…

Q: A certain heat engine does 21.2 kJ of work and dissipates 9.14 kJ of waste heat in a cyclical…

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Q: With 2.56×106J of heat transfer into this engine, a given cyclical heat engine can do only 1.50×105…

A: heat absorbed, Q1 = 2.56 x 106 J work, W = 1.5 x 105 J

Q: A separate engine operates with a hot reservoir temperature of 600 K and a cold reservoir…

A: Given  T1 =600 K And T2=300 K   Find the maximum efficiency.

Q: Imagine a "square cycle" where the two isobaric processes occur at 480000 Pa and 820000 Pa, and the…

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Q: At a particular location, magma exists several kilometers below Earth's surface at a temperature of…

A: The efficiency of the heat engine is given as, e = 1 - (TC /TH ) = 1 - (288/1373) = 0.79

Q: A The work for an isothermal process that moves from volume V₁ to a larger volume V₂ is given by ()…

A: True

Q: A heat engine operates between a reservoir at 25°C and one at 375°C. What is the maximum efficiency…

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Q: A gas increases in pressure from 2.00 atm to 6.00 atm at a constant volume of 1.00 m³ and then…

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Q: A gasoline truck engine takes in 10,000 J of heat and delivers 2,000 J of mechanical work per cycle.…

A: Find the heat energy due to cold reservoir. QH=W+QCQC=QH-W=10,000 J-2,000 J=8000 J The entropy of…

Q: The efficiency of a muscle during weight lifting is equal to the work done in lifting the weight…

A: efficiency of a muscle during weight lifting is equal to the work done in lifting the weight divided…

Q: A completely reversible heat engine operates with a source at 1500 R and a sink at 500 R. If the…

A: It is given that,

Q: We ordinarily say that ΔU = 0 for an isothermal process. Does this assume no phase change takes…

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Q: A Carnot engine operates between two temperatures of 300°C and 130°C while absorbing 650 kJ of heat…

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Q: A steam engine absorbs 7.91×105J and expels4.99 × 105J in each cycle. Assume that all ofthe…

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Q: A Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat…

A: The equation for the coefficient of performance of the heat pump is given by,

Q: A Diesel cycle operates with a compression ratio of 14 and with a cut-off occurring at 5% of the…

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Q: a) The efficiency of a particular cyclical heat engine is 41%. If 371 kJ of heat are being…

A: Given data: Efficiency of heat engine is, η=41% = 0.41. Heat supplied to engine is, Q1=371 kJ.

Q: Which statement is true regarding the entropy change ofan ice cube that melts?(a) Since melting…

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Q: reversed Carnot cycle required 3 hp and extracts energy from a lake to heat a house. If the house is…

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Q: One mole of ideal gas goes through an isothermal compression at a temperature of 20C. If 680J of…

A: In the isothermal process, the temperature of the system remains constant. So, the change in the…

Q: A Carnot engine absorbed 5 kJ of heat at 400K and exhausted 800J of heat at the end of the cycle.…

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Q: 7 kg of water at 55oC is added to a large quantity of ice at 0oC resulting in ice-water. What is the…

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Q: a refrigerator removes heat from the cubicle at the rate of 20kj and ejects 24kj into a room per…

A: Given in question:   Heat removed from the cubicle per cycle(QR) = 20 KJ…

Q: If 10kg/min of air are compressed isothermally from p1=96kPa and V1=7.65m3/min to p2=620kPa, find…

A: Given data: The  air compression rate is, m=10 kg/min. The initial pressure is, P1=96 kPa. The…

Q: Engine A receives 4 times more input heat, produces 6 tir more work, and rejects efficiency of (a)…

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Q: In each cycle of its operation, a heat engine expels 2400 J of energy and performs 1800 J of…

A: Part A:

Q: A Carnot engine operates between temperature T1 =400K and T2 = 300K. It absorbs 100 cal heat from…

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Q: A Carnot engine has an efficiency of 0.60. When the temperature of its cold reservoir changes, the…

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Q: certain gasoline engine has an efficiency of 32.0%. What would the hot reservoir temperature (in °C)…

A: Given Temperature of sink = 2100 C = 210+273 = 483 K Efficiency = 32 %

Q: Energy may be stored for use during peak demand

A: (b) (i) Energy required each night E = mgh = 1.35 X 105 X 9.8 X 135  =  178605000 J = 1.78605 X 108…

Q: "An engine manufacturer makes the claim that the engine they have developed will, on each cycle,…

A: Given : Heat taken , Q1 = 100 J Mechanical Work, W = 80 J  Heat out, Q2= 20 J  Temperature of…

Q: Steam locomotives have an efficiency of 16.0% and operate with a hot steam temperature of 450°C. (a)…

A: a)

Q: What is the ideal efficiency of an engine that runs at 3500 K when the surrounding air is 250 K?

A: The formula for the efficiency is given in terms of temperatures η=1-TcTh

Q: During one cycle, a refrigerator removes 500 J from a cold reservoir and discharges 800 J to its hot…

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