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Chapter 3
Performance and Mechanical Equipment Standards

Excerpt

Combined cycle power plants and cogeneration plants all over the world require detailed specifications both from a performance as well as a mechanical point of view. The first decision is what type of combined cycle power plant should be built. Combined cycle plants are generally configured with each gas turbine and steam turbine driving a separate electrical generator. Since the two generators are on separate shafts, this configuration is called a multi-shaft combined cycle power plant. The term single-shaft combined cycle power plant refers to a configuration in which the gas turbine and steam turbine drive a single, common generator, with the various rotors connected by couplings to form a single shaft. These types of turbines are getting very popular in large plants around the world. The single-shaft combined cycle can be arranged in one of two ways: without a clutch or with a clutch.

The first step in designing a cogeneration or combined cycle power plant is the determination of the customers' requirements. Table 3-1 is a typical cogeneration questionnaire, and Table 3-2 is a typical questionnaire for the independent power industry, which should be answered so that a preliminary analysis can be made.

  • Major Variables of a Combined Cycle Power Plant
  • Plant Location and Site Configuration
  • Plant Type
  • Plant Size and Efficiency
  • Type of Fuel
  • Types of HRSG
  • Types of Condensers
  • Enclosures
  • Plant Operation Mode: Base or Peaking
  • Start-up Techniques
  • Performance Standards
  • ASME, Performance Test Code on Overall Plant Performance
  • ASME, Performance Test Code on Test Uncertainty: Instruments and Apparatus
  • ASME, Performance Test Code on Gas Turbines
  • ASME, Performance Test Code on Gas Turbine Heat Recovery Steam Generators
  • ASME, Performance Test Code on Steam Turbines
  • ASME, Performance Test Code on Steam Condensing Apparatus
  • ASME, Performance Test Code on Atmospheric Water Cooling Equipment
  • ISO, Natural Gas — Calculation of Calorific Value, Density and Relative Density
  • Table of Physical Constants of Paraffin Hydrocarbons
  • Mechanical Parameters
  • API Std 616, Gas Turbines for the Petroleum, Chemical and Gas Industry Services
  • API Std 618, Reciprocating Compressors for Petroleum, Chemical and Gas Industry Services
  • API Std 619, Rotary-Type Positive Displacement Compressors for Petroleum, Chemical, and Gas Industry Services
  • API Std 613 Special Purpose Gear Units for Petroleum, Chemical and Gas Industry Services
  • API Std 677, General-Purpose Gear Units for Petroleum, Chemical and Gas Industry Services
  • API Std 614, Lubrication, Shaft-Sealing, and Control-Oil Systems and Auxiliaries for Petroleum, Chemical and Gas Industry Services
  • ANSI/API Std 610 Centrifugal Pumps for Petroleum, Heavy Duty Chemical and Gas Industry Services
  • API Publication 534, Heat Recovery Steam Generators
  • API RP 556, Fired Heaters & Steam Generators
  • ISO 10436:1993 Petroleum and Natural Gas Industries — General Purpose Steam Turbine for Refinery Service
  • API Std 671, Special Purpose Couplings for Petroleum Chemical and Gas Industry Services
  • ANSI/API Std 670 Vibration, Axial-Position, and Bearing-Temperature Monitoring Systems
  • API Std 672, Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical, and Gas Industry Services
  • API Std 681, Liquid Ring Vacuum Pumps and Compressors
  • Gas Turbine
  • Gears
  • Lubrication Systems
  • Vibration Measurements
  • Specifications

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