NASA has created a heat engine which operates between the sun and the vacuum of the...

NASA has created a heat engine which operates between the sun and the vacuum of the space where the
temperature is absolute zero. He says that his engine is nearly 100% efficient. Do you agree with the claim
assuming the engine to be totally reversible? Analyse the scenario using equation for efficiency of Carnot
engine and Kelvin statement to evaluate your conclusion.

Expert Solution

This is a question related to second law of thermodynamics.Here we have to find out practical aspects of achieving 100% efficiency of a heat engine.

samet mamat answered 8 months ago

A Carnot heat engine operates between two thermal reservoirs ( T1 > T2 ) to generate...

A Carnot heat engine operates between two thermal reservoirs ( T1 > T2 ) to generate as much power as required as to drive a machine ( input power requirement of 30 kW ) plus to drive an ideal heat pump working between 2 temperature limits ( T3 and T4 ) ( T3 > T4 ) . The pump takes 17 kW of heat from the low temperature reservoir where T1 = 1200K, T2= T3 =335 K, T4 = 278...

1. A nuclear power plant contains a heat engine that operates between the temperatures of 150oC...

1. A nuclear power plant contains a heat engine that operates between the temperatures of 150oC and 677oC. (a) What is the Carnot efficiency of the engine? (b) If the engine exhausts energy to the cold reservoir at a rate of QC = 7.0 × 108 J per second, how much heat energy must be flowing into the engine from the hot reservoir (QH) each second? 2. A house has a flat (horizontal) roof. If the wind then blows over...

A heat engine operates between a source and a sink. The source temperatures vary from 300...

A heat engine operates between a source and a sink. The source temperatures vary from 300 to 1000°C. Heat is supplied to the heat engine at a steady rate of 1200 kJ/min. Using Matlab or Excel (or other) software, study the effects of the temperatures of the heat source and the heat sink on the maximum power produced and the cycle thermal efficiency. Plot the power produced and the cycle efficiency against the source temperature for sink temperatures of 0°C,...

A heat engine operates between two reservoirs at T2 = 600 K and T1 = 350...

A heat engine operates between two reservoirs at T2 = 600 K and T1 = 350 K. It takes in 1 000 J of energy from the higher-temperature reservoir and performs 250 J of work. Find (a) the entropy change of the Universe delta SU for this process and (b) the work W that could have been done by an ideal Carnot engine operating between these two reservoirs. (c) Show that the difference between the amounts of work done in...

19 - 3 -4 A heat engine operates between a reservoir at 29°C and one at...

19 - 3 -4 A heat engine operates between a reservoir at 29°C and one at 341°C. What is the maximum efficiency possible for this engine? heat engine operates in a Carnot cycle between 88.0°C and 345°C. It absorbs 21,200 J of energy per cycle from the hot reservoir. The duration of each cycle is 3.00 s. (a) What is the mechanical power output of this engine? kW (b) How much energy does it expel in each cycle by heat?

A heat engine operates between a high-temperature reservoir at 610 K and a low-temperature reservoir at...

A heat engine operates between a high-temperature reservoir at 610 K and a low-temperature reservoir at 320 K. In one cycle, the engine absorbs 6800 J of heat from the high-temperature reservoir and does 2200 J of work. A) What is the net change in entropy as a result of this cycle?

A Carnot heat engine operates between temperature levels of 600 K and 300 K with 8...

A Carnot heat engine operates between temperature levels of 600 K and 300 K with 8 MW heat transferred in the boiler. It drives a compressor, which compresses steam from 200 kPa, 200°C to 1 MPa, 500°C. If mass flow rate of the steam is 5 kg/s. determine the following: (a) The power output of the heat engine (kW). (b) The power input of the compressor (kW). (c) The efficiency of the compressor.

A heat engine operates by extracting 2,000 KJ of heat from a source at 1500 K,...

A heat engine operates by extracting 2,000 KJ of heat from a source at 1500 K, and dumping 800 of waste heat into a sink at 300 K. a) Does this engine violate any known laws of thermodynamics? b) How much work does this engine produce? c) What are the first and second law efficiencies?

A reversible heat engine operates between two reservoirs at temperatures 700 °C 푎푛푑 50 °C ....

A reversible heat engine operates between two reservoirs at temperatures 700 °C 푎푛푑 50 °C . The engine drives a reversible refrigerator which operates between reservoirs at temperatures of 50 °C 푎푛푑 − 25 °C . The heat transfer to the engine is 2500 KJ and the net work output of the combined engine refrigerator plant is 400 KJ. i) Determine the heat transfer to the refrigerant and the net heat transfer to the reservoir at 50 °C ii) Reconsider...

8-12)A heat engine operates in a Carnot cycle between 84.0°C and 355°C. It absorbs 21,600 J...

8-12)A heat engine operates in a Carnot cycle between 84.0°C and 355°C. It absorbs 21,600 J of energy per cycle from the hot reservoir. The duration of each cycle is 3.00 s. (a) What is the mechanical power output of this engine? kW (b) How much energy does it expel in each cycle by heat? kJ 12)A Carnot engine operates between 105°C and 18°C. How much ice can the engine melt from its exhaust after it has done 4.0 ✕...

Question