Hello everyone,
I have a question about positive displacement pump or compressor.
what does mean the word of positive in sentence of positive displacement pump/compressor. The word of positive really refers to what? what or which operation or action or ... is positive in positive displacement pumps/compressors. Is there any negative displacement compressor or pump?
I have a question about positive displacement pump or compressor.
what does mean the word of positive in sentence of positive displacement pump/compressor. The word of positive really refers to what? what or which operation or action or ... is positive in positive displacement pumps/compressors. Is there any negative displacement compressor or pump?