Nash vacuum systems are essential components in combined cycle power plants, designed to optimize energy efficiency and enhance overall performance. These systems play a critical role in maintaining low condenser pressures, which is vital for improving the plant's thermal efficiency and overall power output. With decades of expertise and a strong focus on engineered-to-order solutions, Nash ensures that each vacuum system is tailored to meet the unique requirements of modern power plants, as demonstrated in projects like the world-record-setting Keadby 2 power station in Great Britain.
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Key Benefits
- Improved Operational Efficiency: By reducing total system pressure through effective air extraction, Nash vacuum systems help power plants achieve higher thermal efficiencies.
- Cost Savings: Enhanced energy efficiency results in higher electrical output and reduced need for additional fuel sources, lowering operational costs.
- Longevity and Reliability: The robust design and high-quality materials ensure that Nash vacuum systems provide dependable performance, even in extreme conditions like high temperatures or earthquake-prone areas.
- Sustainability and Environmental Responsibility: Effective flare gas recovery and optimized condenser pressures contribute to lower CO2 emissions, showcasing a commitment to environmentally friendly operations.
Nash is proud to support power plants with customized, high-performance vacuum systems that contribute to setting industry benchmarks, such as the Keadby 2 power station's world record for efficiency at 64.18%.
Key Features
- High Capacity and Performance: The Nash vacuum systems are built to handle high volumes and maintain optimal performance even under demanding conditions. For instance, the Nash 2BW4 system, used in the Keadby 2 project, exemplifies our dedication to power and reliability.
- Optimized Footprint: Compact design to reduce installation space without compromising performance.
- Advanced Safety Features: Cavitation-proof design to perform under varying operating conditions and condenser pressures.
- Custom Engineered Solutions: Each vacuum system is engineered to order, ensuring it meets specific local and operational requirements.
Technical Specifications
Components of a Typical Package:
- Primary pump units (e.g., Nash 2BE1 series)
- Separator and air- or water-cooled heat exchangers for uninterrupted operation
- Control panels and instrumentation for seamless operation
Performance Metrics
- Capacity: Can handle up to 3867 am³/h per unit, achieving a total system capacity of up to 23 MMSCFD in multi-unit setups.
- Discharge Suction Pressure: Depending on local design parameters, capable of reaching a maximum suction pressure of 0.33 bar(a) and below.
- Power Requirements: Each pump demands only 132 kW at the design point.
Materials of Construction: SS316L for optimal durability and chemical resistance.
Compliance with Industry Standards:
- Certified to meet ASME, API, NEC, and European directives (Machinery, Pressure Equipment, Low Voltage Directives).
- Available configurations also meet UKCA, ASME, NEMA, HEI, and other local standards.
Applications
Common Use Cases:
- Air extraction in condensers to maintain low pressure and maximize power output
- Effective gas recovery and extraction in power plants for improved sustainability
Industries:
- Power generation (combined cycle and thermal power plants)
- Energy facilities prioritizing environmental compliance and efficiency
Specific Scenarios:
- Performance during seasonal temperature shifts, where cooling water temperatures impact condenser pressure
- Situations requiring high reliability to prevent cavitation and ensure continuous operation
Read Our Case Study
Learn from the success of Keadby 2 Power Station and understand the economic and environmental benefits of using Nash Vacuum Systems.