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A single-acting two-stage compressor with complete inter cooling delivers air at 16 bar. Assuming an intake state of 1 bar at 15°C, the pressure ratio per stage is:
- a)16
- b)8
- c)4
- d)2
Correct answer is option 'C'. Can you explain this answer?
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A single-acting two-stage compressor with complete inter cooling deliv...
Pressure ratio of each stage must be same
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A single-acting two-stage compressor with complete inter cooling deliv...
°C, the compression process can be analyzed using the following steps:
1. Isentropic compression: The air is compressed from 1 bar to an intermediate pressure in the first stage of the compressor. This process can be modeled as an isentropic compression, where the entropy remains constant and the temperature and pressure increase. The specific volume of the air decreases during this process.
2. Intercooling: After the first stage, the compressed air is cooled to reduce its temperature and increase its density before entering the second stage. This is achieved by passing the compressed air through a heat exchanger where it is cooled by a cooling medium such as water. The pressure remains constant during this process, but the specific volume decreases due to the cooling effect.
3. Isentropic compression: The cooled and compressed air is then further compressed in the second stage of the compressor, which can also be modeled as an isentropic process. The pressure and temperature of the air increase further, and its specific volume decreases.
4. Final cooling: The compressed air is then cooled again to its final temperature and pressure using another heat exchanger or cooling device. This is necessary to prevent overheating and to ensure that the compressed air is at the desired state for its intended use.
Overall, the two-stage compressor with intercooling allows for higher compression ratios and higher efficiencies compared to a single-stage compressor. The intercooling between stages reduces the work required for compression and also reduces the risk of overheating, which can cause damage to the compressor and decrease its efficiency.
1. Isentropic compression: The air is compressed from 1 bar to an intermediate pressure in the first stage of the compressor. This process can be modeled as an isentropic compression, where the entropy remains constant and the temperature and pressure increase. The specific volume of the air decreases during this process.
2. Intercooling: After the first stage, the compressed air is cooled to reduce its temperature and increase its density before entering the second stage. This is achieved by passing the compressed air through a heat exchanger where it is cooled by a cooling medium such as water. The pressure remains constant during this process, but the specific volume decreases due to the cooling effect.
3. Isentropic compression: The cooled and compressed air is then further compressed in the second stage of the compressor, which can also be modeled as an isentropic process. The pressure and temperature of the air increase further, and its specific volume decreases.
4. Final cooling: The compressed air is then cooled again to its final temperature and pressure using another heat exchanger or cooling device. This is necessary to prevent overheating and to ensure that the compressed air is at the desired state for its intended use.
Overall, the two-stage compressor with intercooling allows for higher compression ratios and higher efficiencies compared to a single-stage compressor. The intercooling between stages reduces the work required for compression and also reduces the risk of overheating, which can cause damage to the compressor and decrease its efficiency.
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A single-acting two-stage compressor with complete inter cooling delivers air at 16 bar. Assuming an intake state of 1 bar at 15°C, the pressure ratio per stage is:a)16 b)8 c)4 d)2Correct answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A single-acting two-stage compressor with complete inter cooling delivers air at 16 bar. Assuming an intake state of 1 bar at 15°C, the pressure ratio per stage is:a)16 b)8 c)4 d)2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A single-acting two-stage compressor with complete inter cooling delivers air at 16 bar. Assuming an intake state of 1 bar at 15°C, the pressure ratio per stage is:a)16 b)8 c)4 d)2Correct answer is option 'C'. Can you explain this answer?.
A single-acting two-stage compressor with complete inter cooling delivers air at 16 bar. Assuming an intake state of 1 bar at 15°C, the pressure ratio per stage is:a)16 b)8 c)4 d)2Correct answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A single-acting two-stage compressor with complete inter cooling delivers air at 16 bar. Assuming an intake state of 1 bar at 15°C, the pressure ratio per stage is:a)16 b)8 c)4 d)2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A single-acting two-stage compressor with complete inter cooling delivers air at 16 bar. Assuming an intake state of 1 bar at 15°C, the pressure ratio per stage is:a)16 b)8 c)4 d)2Correct answer is option 'C'. Can you explain this answer?.
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