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CHAPTER 6 Capstone FUEL REQUIREMENTS CHAPTER 6: FUEL REQUIREMENTS Capstone C200 microturbines 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 C200 version. Table 6-1. Fuel Input Requirements C200 Version Inlet Pressure Range Fuel Type Fuel Energy Content Range [HHV] High Pressure NG Low Pressure NG Landfill Digester 75 - 80 psig (517 – 552 kPaG) 0.25 – 5 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 C200 microturbine must meet the inlet pressure requirements under all operating conditions. Fuel flow during on-loads can be up to one and one half times the nominal steady state value. Nominal steady state fuel flow [HHV] at full power and ISO conditions for all C200 versions 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 C200 microturbine family, the maximum allowable sulfur content (expressed as hydrogen sulfide) is shown in Table 6-2. Table 6-2. Maximum Sulfur Content C200 Version Fuel Type Maximum Sulfur Content (expressed as H2S) High Pressure NG Low Pressure NG Natural Gas 5 ppm 5,000 ppm 5,000 ppm Landfill Landfill Gas Digester Digester Gas The Landfill/Digester Gas Use Application Guide (480002) contains advice and examples for designing fuel treatment systems for landfill and digester gas applications. In addition to this specific guidance, Table 6-3 summarizes the requirements to be met at the inlet to each microturbine for all fuel types. 410066 Rev C (June 2009) 6-1 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.PDF Image | CAPSTONE C200 MICROTURBINE TECHNICAL REFERENCE
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