Podcast
Questions and Answers
What is the primary method of lubrication for a flooded screw compressor?
What is the primary method of lubrication for a flooded screw compressor?
- Oil injection
- Water jackets
- Circulation under compressed gas pressure (correct)
- Timing gears
Why does the high discharge temperature limit the pressure ratio for a dry screw compressor?
Why does the high discharge temperature limit the pressure ratio for a dry screw compressor?
- To reduce the risk of vibrations in the piping
- To increase the efficiency of oil lubrication
- To prevent oil degradation
- To minimize gas leakage through lobe clearances (correct)
What effect does oil cooling have on the flooded screw compressor's pressure ratios?
What effect does oil cooling have on the flooded screw compressor's pressure ratios?
- Reduces pressure ratios
- Maintains pressure ratios
- No effect on pressure ratios
- Increases pressure ratios (correct)
Why can't a flooded screw compressor be used for food and pharmaceutical industries?
Why can't a flooded screw compressor be used for food and pharmaceutical industries?
What is the primary purpose of timing gears in a dry screw compressor?
What is the primary purpose of timing gears in a dry screw compressor?
What is the main difference between a dry screw compressor and a flooded screw compressor?
What is the main difference between a dry screw compressor and a flooded screw compressor?
What is a notable characteristic of a screw compressor in terms of shaking forces?
What is a notable characteristic of a screw compressor in terms of shaking forces?
What is the primary driver used for process service in a screw compressor?
What is the primary driver used for process service in a screw compressor?
In a P & V diagram of a screw compressor, what does 'Pd' represent?
In a P & V diagram of a screw compressor, what does 'Pd' represent?
What happens in off-design conditions for a screw compressor?
What happens in off-design conditions for a screw compressor?
