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    Equipment- English

    Surge Control in Centrifugal Compressors

        what is surge? Dresser-Rand has been a leading designer and supplier of surge control systems for centrifugal and axial compressors for over thirty-five years. Recent innovations in control technology have made it possible to supply surge control systems which are capable of coping with rapid flow fluctuations and process gas variations. Current surge control systems from Dresser-Rand Control Systems provide protection against surge with more efficient compressor operation, especially in process applications that involve variations in the gas mixture and temperature. Several surge methods are in use today, each with its own approximations and consequent inaccuracies. Operating the compressor safely in spite of these inaccuracies is usually accomplished by establishing the surge controller flow set point based on…