CASE STUDY
Valve noise elimination at CCPP in the US
Written By IMI Publications
March 15, 2023
The Challenge
In the United States, two sister 640MW 2×1 combined cycle power plants received approval to modernise their facilities. Both plants will convert from water-cooled condensers to air-cooled condensers, eliminating the use of ocean water for cooling. However, the conversion to air-cooled condensers was not without risk.
Stringent far-field noise requirements associated with the neighbouring residential areas represented a significant hurdle. To complete their modernisation plan, the plant owners needed a low noise solution for the turbine bypass valves located upstream of their new air-cooled condensers.
Cross-sectional view of the IMI CCI 100DHP DRAG® Control Valve, featuring internal components including stem, seat, and flow chambers. Engineered for precise fluid regulation, the valve supports pressure reduction and high-performance control in critical industrial systems.
The Solution
The IMI CCI sales and application engineering team collaborated closely with the end user, EPC, and OEM to define the complex engineering requirements of the air-cooled condenser system and the recommended system solution to meet the plant’s stringent noise requirements. The IMI CCI solution provided multi-stage DRAG® technology to eliminate the valve trim noise and an under-the-plug configuration to mitigate the potential for low frequency seat bore jet recombination and valve outlet expansion noise.
In addition, the stringent far-field noise requirements necessitated multi-stage DRAG® technology be applied to the critical and typically noisy start-up vent applications.
This is an excellent example of IMI CCI’s experience, expertise, and global capability delivering an exceptional solution to the customer.
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HIPPS rig painted yellow
