Recent questions in Applied Thermodynamics

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Gas power cycles

in an air standard Otto cycle, the maximum and minimum temperatures are 1400°C and 15°C respectively. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and thermal efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle. Take: as 0.717 kJ/kgK, and as 1.4
0

Give the equivalence of standard air pressure in metric system.

Hello to everybody, please give the equivalence of 1 atm in metric system.
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What forces do the molecule experience when they come closer?

I don't know the solution. Help needed, types of forces molecule experience when they come closer.
0

Give the value of specific gas constant.

I am preparing for my finals in the next month. i can't find the solution to this question. Value of specific gas constant is?
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Compare the distribution of molecules in liquid with gas.

Can some one out in the Docsity world provide the distribution of molecules in liquid w.r.t gas .
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For what value of MACH number, changes in density can be ignored?

Hello everyone! My assignment is due next monday and I haven't got a clue how to solve it. The question is For what value of MACH number, changes in density can be ignored?
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1-6 of 11

Explain an increases in compressor efficiency due to intercooling and staging. Which one is more effective

Explain an increases in compressor efficiency due to intercooling and staging. Which one is more effective and preferred from your point of view?
1

Gas power cycles

in an air standard Otto cycle, the maximum and minimum temperatures are 1400°C and 15°C respectively. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and thermal efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle. Take: as 0.717 kJ/kgK, and as 1.4
0

Reciprocating internal combustion engines

9.1 An air-standard Otto cycle has a compression ratio of 8.5. At the beginning of compression,p1 100 kPa and T1 300K. The heat addition per unit mass of air is 1400 kJ/kg. Determine (a) the net work, in kJ per kg of air. (b) the thermal efficiency of the cycle.(c) the mean effective pressure, in kPa. (d) the maximum temperature in the cycle, in K.
1

What are the factors that can affect the Factor of safety selection?

I want to impress my hot teacher with my knowledge.
1
1-6 of 57

What are the factors that can affect the Factor of safety selection?

I want to impress my hot teacher with my knowledge.
1

Explain an increases in compressor efficiency due to intercooling and staging. Which one is more effective

Explain an increases in compressor efficiency due to intercooling and staging. Which one is more effective and preferred from your point of view?
1

Distinguish between work and energy.

I am going to participate in a talent quiz show in which this question is tested often. Please help me out with it.
6

Which of the following is not allowed by the law of energy conservation?

I need to have a strong grip on this subject but this question always gets in my way. Tell me an appropriate answer to my query. I’ll highly appreciate your concerns. Thanks!``
6

Reciprocating internal combustion engines

9.1 An air-standard Otto cycle has a compression ratio of 8.5. At the beginning of compression,p1 100 kPa and T1 300K. The heat addition per unit mass of air is 1400 kJ/kg. Determine (a) the net work, in kJ per kg of air. (b) the thermal efficiency of the cycle.(c) the mean effective pressure, in kPa. (d) the maximum temperature in the cycle, in K.
1

Gas power cycles

in an air standard Otto cycle, the maximum and minimum temperatures are 1400°C and 15°C respectively. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and thermal efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle. Take: as 0.717 kJ/kgK, and as 1.4
0
1-6 of 57
Applied Thermodynamics