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Tag Archives: HVAC


Scroll Compressor

A scroll compressor (also called spiral compressor, scroll pump and scroll vacuum pump) is a device for compressing air or refrigerant. In rolling stocks, scroll compressor is used for HVAC … Continue reading

Rolling Stock Components

Rolling stock originally referred to the vehicles that move on a railway. It usually includes both powered and unpowered vehicles, for example locomotives, railroad cars, coaches, and wagons. Rolling Stock Components 1- Car body Car body shell … Continue reading