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        Hydraulic Clearance Optimization (HCO)

        1 MW

        • Power increase in simple cycle operation: up to 2 MW and in combined cycle up to 3 MW

        • Efficiency increase in simple cycle operation: up to 0.3 %-points and in combined cycle up to 0.2 %-points

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        General Product Information

        Power up your performance

        To help you improve the performance of your gas turbine and your plant competitiveness Siemens Energy Service offers many innovative solutions. One of these is the Hydraulic Clearance Optimization (HCO) upgrade.

        The performance enhancement feature of the Hydraulic Clearance Optimization upgrade is achieved by shifting the rotor against flow direction to optimize turbine clearances during steady state operation. The axial shift of the rotor is performed automatically by hydraulic pistons behind the compressor thrust bearing. This shift results in a power and efficiency increase after a  one hour warm-up period. 

        Power Increase

        Efficiency Increase

        Your benefits

        Benefits may include:

        • Power increase in simple cycle operation: up to 2 MW and in combined cycle up to 3 MW
        • Efficiency increase in simple cycle operation: up to 0.3 %-points and in combined cycle up to 0.2 %-points

        Scope of Supply

        The scope of this upgrade includes:

        • New combined compressor bearing
        • Hydraulic pistons installed behind the compressor axial bearing
        • Auxiliaries (e.g., additional hydraulic system, control device and piping)

        Usually it makes sense to install this upgrade during a major outage.

        Click here to get the product information as a PDF:

        Hydraulic Clearance Optimization for Siemens Gas Turbines

        Customer Extranet Portal

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        For owners/operators we offer further information on your equipment. Please register to the Siemens Power Generation Services Customer Extranet Portal.

        Siemens Power Generation Services Customer Extranet Portal

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