A diesel generator supplies a small mine, not connected to a power grid, with power. The maximum output is 1000 kW. The efficiency of the generator is 85 per cent and that of the diesel engine is 40 per cent. Calculate the maximum mass of fuel consumed per hour if the calorific value of the fuel is 44MJ/kg. Calculate the minimum capacity of the fuel tank required if the density of the fuel is 0.95 kg/litre and the load factor is 0.55 over 24 hours. Fuel is only delivered once a week.

Q: Let two t ́machines be connected in s ́erie such that the heat released by the first t ́machine is…

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Q: A refrigerator does 26.0 kJ of work while moving 107 k] of thermal energy from inside the…

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Q: The second law of thermodynamics states that the entropy of an isolated system not in equilibrium…

A: The objective of the question is to verify the statement about the second law of thermodynamics and…

Q: A nuclear power plant has a power output (i.e. output to do useful work) of 1505 MW and operates at…

A: Output power (P) = 1505 MW efficiency = 21.1% flow rate of river (Q) = 1.15×106 kgs

Q: A steam engine operates at an overall efficiency of 15%. How much heat be supplied per hour in order…

A: Heat supplied per hour P=WtP=ηQtQt=Pη

Q: A heat pump has a coefficient of performance equal to 4.15 and requires a power of 1.61 kW to…

A: Given:Co-efficient of performance, Bh = 4.15Poer, P = 1.61 kW

Q: What is Carnot efficiency Of a heat engine operating between the temperatures of 153°C And 19°C Give…

A: Carnot efficiency η=1-TCTH

Q: A prototype power generation device that cycles steam between a geothermal source (temperature 393…

A: Given: The source temperature of the cycle is 393 K. The sink temperature of the cycle is 280 K.…

Q: Second Law of thermodynamics. An engine in performing 196 J of work discharges 34 J of heat. What is…

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

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Q: As a gasoline engine is running, an amount of gasoline containing 16,000 J of chemical potential…

A: The work done by the engine, W=4000 J   The input chemical energy, Einput=16000 J

Q: Forty grams of water at 23°C is heated until it becomes vapor at 100°C. Calculate the change in…

A: Given:- The  mass of the water is m= 40 g  The initial temperature of the water is Ti = 23°C The…

Q: An automobile engine consumes fuel at a rate of 26 L/s and delivers 65 kw of power to the wheels. If…

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Q: An engine doing work isothermally takes in 10kJ and exahusts 1kJ. What is the efficiency of the…

A: Heat takes the engine,                               Heat exhausts the engine,…

Q: An engine, operating with an efficiency of 0.225,  delivers 8.10 ✕ 105 J each minute. What is the…

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Q: A heat engine exhausts 3 200 J of waste heat while performing 1 500 J of useful net work. What is…

A: Given data: Work done W=1500J Heat exhausted QC=3200J

Q: A heat engine receives heat in the amount of Qh = 775 kJ from a high temperature thermal reservoir…

A: The amount of heat received by the heat engine, Qh = 775 kJ The net work done by the engine, Wnet =…

Q: The heat that goes into a particular Carnot engine is 4.00 times greater than the work it performs.…

A: We have to find the efficiency of the carnot engine. We know the heat input in the carnot is 4 times…

Q: As a gasoline engine is running, an amount of gasoline containing 11,100 J of chemical potential…

A: Given Data: The input energy is: Qi=11100 J The output energy is: Qo=3700 J

Q: If the temperature inside the fridge is 35°F and the temperature outside is 70°F what is the maximum…

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Q: A heat pump has a coefficient of performance equal to 4.45 and requires a power of 1.65 kW to…

A: Given that, the coefficient of performance of the heat pump is CoPhp=4.45 And the power required is…

Q: An engine operates at 66.8% the maximum (Carnot) efficiency.  It has a cold reservoir at 651 K and a…

A: Given, The engine operates at 66.8% the maximum (Carnot) efficiency cold reservoir temp T1=651 K hot…

Q: A truck mass of m=1210kg drives up an incline at a constant speed of v = 12.7 m/s. The forces of air…

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Q: In one cycle a heat engine absorbs 3.82 * 104 J of heat from the hot reservoir and rejects 3.16 *…

A: Given, Heat absorbed, Qa=3.82×104 J Heat rejected, Qr=3.16×104 J   We know, Efficiency is given by:…

Q: A heat engine extracts 45.0 kJ from the hot reservoir and exhausts 40.0 kJ into the cold reservoir.…

A: The work done by heat engine: W=QH-QC Efficiency η=1-QCQH Given QC=40kJ QH=45kJ

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 heat engine extracts 59 kJkJ from the hot reservoir and exhausts 32 kJkJ into the cold reservoir.…

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Q: A heat pump has a coefficient of performance equal to 4.85 and requires a power of 1.61 kW to…

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Q: During each cycle a reversible engine absorbs 3100 J of heat from a high-temperature reservoir and…

A: We are aware that the engine generates 3100 J of heat and uses 1900 J of energy to work. We have to…

Q: What is the maximum efficiency of a heat engine operating between a hot heat reservoir at 800 K and…

A: Given, Temperature of a hot heat reservoir (Th) = 800 k Temperature of a cold heat reservoir (Tc) =…

Q: A typical coal-fired power plant burns 340 metric tons of coal every hour to generate 2.5 × 106 MJ…

A: The efficiency of the power plant can be given by e=WoutQh×100%

Q: Suppose that a heat engine takes 3.20  104 J of heat from the high-temperature reservoir to produce…

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Q: An engine with an efficiency of 0.34 absorbs 55 J from a heat reservoir in each cycle. If it…

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Q: Give the numerical answers as numerical values of the requested units (number only) to three…

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