Heat from an engine turns a fan. Explain why.
Heat from an engine turns a fan. Explain why.
Homework Answers
the heat from an engine is converted into useful work by an engine
A dynamo is connected to the engine which converts the useful work into electricity which in turn is used to run the fan.
Question 2 (20%) A heat engine takes 425 kJ of heat from a reservoir at 1000...
Question 2 (20%) A heat engine takes 425 kJ of heat from a reservoir at 1000 °C and discharges its excess heat to a reservoir at 400 °C. This heat engine produces 200 kJ net work. Explain mathematically if this engine is reversible or irreversible and if it is possible to have such a heat engine. Describe the physical reasoning behind your answer.
The answer is NO but why? An inventor claims to have developed a heat engine that...
The answer is NO but
why?
An inventor claims to have developed a heat engine that receives 700 kJ of heat from a source at 500 K and produces 300 kJ of net work while rejecting the waste heat to a sink at 290 K. Is this a reasonable claim? Yes or No Yes No
A furnace is transferring heat to a heat engine from at a rate of 100 MW....
A furnace is transferring heat to a heat engine from at a rate of 100 MW. Waste heat is rejected to a nearby river at a rate of 60 MW. Calculate the thermal efficiency for this heat engine. Ox-100MW 0= 60 MW Fig 1. Heat engine 24% a. 3496 ob. 36% OC. d. 4096 46%
A reversible heat engine receives heat of 2000 kJ from a furnace at temperature of 600...
A reversible heat engine receives heat of 2000 kJ from a furnace at temperature of 600 0C and rejects waste heat into the house. The portion of work produced by this heat engine utilized to drive a reversible heat pump to warmup the same house during the winter. The house is to be maintained at 21 0C at all times even though outside temperature drops to -15 0C. If the net-work output of the combined heat engine and heat pump...
21 A Carnot heat engine receives heat from a reservoir at 700°C at a rate of...
21 A Carnot heat engine receives heat from a reservoir at 700°C at a rate of 6 MW and rejects the waste heat to the ambient at 300 K, as shown in the figure. The entire net power output of the heat engine is used to drive a Carnot refrigerator that removes heat from the cold medium at -10°C and transfers it to the same ambient at 300 K. Determine:35235333333 a) The thermal efficiency of the heat engine. b) The...
Solve the following problem in Thermodynamics: Carnot Cycle A heat engine receives heat from a source...
Solve the following problem in Thermodynamics: Carnot Cycle A heat engine receives heat from a source at 2000 K at a rate of 500 kW, and rejects the waste heat to a medium at 300 K. The net output from the engine is 300 kW. Determine the maximum energy that can be driven out of the engine theoretically using Carnot Cycle. Compare the observed work-efficiency with the expected efficiency of the heat engine? How much energy is lost due to...
In one cycle, a certain heat engine takes in 1000 J1000 J of heat from its...
In one cycle, a certain heat engine takes in 1000 J1000 J of
heat from its high‑temperature reservoir and exhausts 700 J700 J of
heat to its low‑temperature reservoir.
What is the efficiency of the heat engine under these
conditions? 70%,30%,43%,143%,300%.
In one cycle, a certain heat engine takes in 1000 J of heat from its high-temperature reservoir and exhausts 700 J of heat to its low-temperature reservoir. Hot reservoir What is the efficiency of the heat engine under these...
How will you solve? 7. A heat engine operates so that 20,000 Jof energy flows from...
How will you solve?
7. A heat engine operates so that 20,000 Jof energy flows from the hot reservoir and 8240 I flows to the.cold reservoir. The engine is needed to perform two specific tasks, one requires i 1.588」of wor requires 13.272 J of work. Explain which, if either, can be accompished by this engine and how you 8. What is the efficlency of an engine that absorbs 543 J of heat while wasting 208 J of heat?
Page 2 of4 Problem A Carnot heat engine received heat from a reservoir at 900 °C...
Page 2 of4 Problem A Carnot heat engine received heat from a reservoir at 900 °C at a rate of 800 k./min and reject the waste heat to the sink at 27°C. The entire work output of the heat engine is used to drive a Carnot refrigerator that removes heat from the refrigerated space at -5 *C and transfer it to the same sink at 27°C. 900 "C 800 kI min Determine: 27"C (a) The Camot heat engine thermal efficiency...
Page 2 of4 Problem A Carnot heat engine received heat from a reservoir at 900 °C...
Page 2 of4 Problem A Carnot heat engine received heat from a reservoir at 900 °C at a rate of 800 k./min and reject the waste heat to the sink at 27°C. The entire work output of the heat engine is used to drive a Carnot refrigerator that removes heat from the refrigerated space at -5 *C and transfer it to the same sink at 27°C 900 ℃ 800 kI min Determine: 27-C (a) The Camot heat engine thermal efficiency...
Question 2 (20%) A heat engine takes 425 kJ of heat from a reservoir at 1000 °C and discharges its excess heat to a reservoir at 400 °C. This heat engine produces 200 kJ net work. Explain mathematically if this engine is reversible or irreversible and if it is possible to have such a heat engine. Describe the physical reasoning behind your answer.
The answer is NO but
why?
An inventor claims to have developed a heat engine that receives 700 kJ of heat from a source at 500 K and produces 300 kJ of net work while rejecting the waste heat to a sink at 290 K. Is this a reasonable claim? Yes or No Yes No
A furnace is transferring heat to a heat engine from at a rate of 100 MW. Waste heat is rejected to a nearby river at a rate of 60 MW. Calculate the thermal efficiency for this heat engine. Ox-100MW 0= 60 MW Fig 1. Heat engine 24% a. 3496 ob. 36% OC. d. 4096 46%
21 A Carnot heat engine receives heat from a reservoir at 700°C at a rate of 6 MW and rejects the waste heat to the ambient at 300 K, as shown in the figure. The entire net power output of the heat engine is used to drive a Carnot refrigerator that removes heat from the cold medium at -10°C and transfers it to the same ambient at 300 K. Determine:35235333333 a) The thermal efficiency of the heat engine. b) The...
Solve the following problem in Thermodynamics: Carnot Cycle A heat engine receives heat from a source at 2000 K at a rate of 500 kW, and rejects the waste heat to a medium at 300 K. The net output from the engine is 300 kW. Determine the maximum energy that can be driven out of the engine theoretically using Carnot Cycle. Compare the observed work-efficiency with the expected efficiency of the heat engine? How much energy is lost due to...
In one cycle, a certain heat engine takes in 1000 J1000 J of
heat from its high‑temperature reservoir and exhausts 700 J700 J of
heat to its low‑temperature reservoir.
What is the efficiency of the heat engine under these
conditions? 70%,30%,43%,143%,300%.
In one cycle, a certain heat engine takes in 1000 J of heat from its high-temperature reservoir and exhausts 700 J of heat to its low-temperature reservoir. Hot reservoir What is the efficiency of the heat engine under these...
How will you solve?
7. A heat engine operates so that 20,000 Jof energy flows from the hot reservoir and 8240 I flows to the.cold reservoir. The engine is needed to perform two specific tasks, one requires i 1.588」of wor requires 13.272 J of work. Explain which, if either, can be accompished by this engine and how you 8. What is the efficlency of an engine that absorbs 543 J of heat while wasting 208 J of heat?
Page 2 of4 Problem A Carnot heat engine received heat from a reservoir at 900 °C at a rate of 800 k./min and reject the waste heat to the sink at 27°C. The entire work output of the heat engine is used to drive a Carnot refrigerator that removes heat from the refrigerated space at -5 *C and transfer it to the same sink at 27°C. 900 "C 800 kI min Determine: 27"C (a) The Camot heat engine thermal efficiency...
Page 2 of4 Problem A Carnot heat engine received heat from a reservoir at 900 °C at a rate of 800 k./min and reject the waste heat to the sink at 27°C. The entire work output of the heat engine is used to drive a Carnot refrigerator that removes heat from the refrigerated space at -5 *C and transfer it to the same sink at 27°C 900 ℃ 800 kI min Determine: 27-C (a) The Camot heat engine thermal efficiency...
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