Frequency Conversion Energy-Saving Retrofit

Detailed introduction

Variable-frequency energy-saving retrofitting is a systematic project that integrates technology, management, and economics. It aims to achieve energy conservation, optimized control, and extended equipment lifespan by installing or replacing variable-frequency drives (VFDs) for electrically powered auxiliary machinery onboard vessels. This approach enables precise and continuous adjustment of motor speed, thereby regulating the output (e.g., flow rate, pressure) of equipment such as pumps and fans.

Ø Core Principle: Replaces the traditional "constant-speed operation + valve/damper throttling" method with a fundamental shift to "variable-speed" regulation.

Ø Economic Benefits: Directly reduces auxiliary machinery power consumption by 20%–50%, lowering fuel consumption and operational costs.

Ø Management Benefits: Precise Control，Enhances system automation and stabilizes parameters (e.g., cooling water temperature).

Ø Reduced Maintenance: Minimizes mechanical wear on valves and bearings and mitigates cavitation.

Ø Regulatory Compliance: One of the most direct and effective technical measures for reducing the Energy Efficiency Existing Ship Index (EEXI) and optimizing the Carbon Intensity Indicator (CII).

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