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CHAPTER 6 Capstone FUEL REQUIREMENTS ( chapter-6-capstone-fuel-requirements )

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CHAPTER 6 Capstone FUEL REQUIREMENTS CHAPTER 6: FUEL REQUIREMENTS Capstone 1000 MicroTurbine systems are available in several versions that can operate on natural gas, and medium BTU gasses (such as from a landfill or anaerobic digester). Capstone has defined these fuel types according to energy content, Wobbe index, and other characteristics in the Fuel Requirements Specification (410002). Table 6-1 summarizes the energy content and inlet fuel pressure requirements for each C1000 package fuel version. Table 6-1. Fuel Input Requirements Fuel Type Inlet Pressure Range Fuel Type Fuel Energy Content Range [HHV] High Pressure NG Low Pressure NG Landfill Digester 75-80psig (517 – 552 kPaG) 0.25 – 15 psig (1.8 – 103 kPaG) 75 – 80 psig (517 – 552 kPaG) 75 – 80 psig (517 – 552 kPaG) Natural Gas Landfill Gas Digester Gas 30,700 – 47,500 kJ/m3 (825 – 1,275 Btu/scf) 13,000 – 22,300 kJ/m3 (350 – 600 Btu/scf) 20,500 – 32,600 kJ/m3 (550 – 875 Btu/scf) The fuel provided to each C1000 package must meet the inlet pressure requirements under all operating conditions. Fuel flow during on-loads can be up to twice the nominal steady state value. Nominal steady state fuel flow [HHV] at full power and ISO conditions for each 200 kW power module is 2,400,000 kJ/hr (2,280,000 Btu/hr). The ratio of higher heating value (HHV) to lower heating value (LHV) is assumed to be 1.1 for all fuel types. Maximum fuel contaminants are defined in the Fuel Requirements Specification (410002) for each fuel type. Some of the allowable contaminants depend on the specific MicroTurbine model rather than the fuel type definition. For the 200 kW power modules, the maximum allowable sulfur content (expressed as hydrogen sulfide) is shown in Table 6-2. High Pressure NG Low Pressure NG Landfill Digester 410072 Rev A (January 2009) 5 ppm 5,000 ppm 5,000 ppm Table 6-2. Maximum Sulfur Content Fuel Type Maximum Sulfur Content (expressed as H2S) Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction. Page 6-1


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