Why can’t screw compressors operate with liquid present?
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This post was last edited by Conan No.1 on 2025-10-7 at 08:16. Is the lubricating oil in a liquid phase or gas phase when it enters the screw compressor? If it is in a liquid phase, why can’t the compression process take place with this medium present?
Regarding your question, it’s best to search for videos on the principles of animation; understanding how they work is the key to solving the problem. “If it is in the liquid phase, why can’t the compression process take place with a medium? What does this “medium” refer to? Please explain. Due to the special structure of this compressor, a portion of the oil is allowed to enter the \"cylinder\" to lubricate it; thereafter, the oil and gas are separated using a gas-oil separator located at the outlet. The gas enters the system, while the diluted oil returns to the tank to continue the lubrication cycle. For reference.
I’ve learned it.* You know, I get dizzy just at the thought of “why,” because it’s very difficult to come up with an answer that meets the requirements.
Take the ammonia-based refrigeration screw compressor as an example: the lubricating oil enters in a liquid state as well, but the flow rate is very low. When liquid ammonia enters the compressor, its compressibility is extremely low, which results in high pressures that can damage the rotor. Furthermore, the evaporation of liquid ammonia within the oil lowers the oil temperature, making it difficult to separate the oil from the ammonia gas.
I think there’s something wrong with the description you gave
In an oil-injected screw compressor, the liquid lubricant is compressed together with air; after passing through the oil-gas separator, the air and oil are separated
Isn’t it for separating and cooling the gas and liquid as they come in and out?