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WORKING OF ROTARY COMPRESSOR




 Rotary Compressors are used where large quantities of air or gas are needed at relatively low pressure. They may be classified into two main types : 

 1. Displacement compressors in which air is compressed by being  trapped in the reducing space formed  by two sets of  engaging surfaces.

     *Rotary positive displacement machines are generally uncooled  and  the  compression is largely adiabatic. 

      These are two types :

      Roots blower and 

      vane -type compressor.

 2. Steady - flow compressors in which compression occurs by transfer of kinetic energy from rotor. 

     *Steady - flow compressors are of two types : 

        Centrifugal compressor 

        Axial compressor 



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