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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Capstone MicroTurbine Installation and Permitting Guidelines Fuel Service The Capstone MicroTurbine requires clean, dry fuel of the appropriate pressure. Fuel preparation is not a trivial matter, though. There are many permitting and code issues as well as fuel requirements of the MicroTurbine. Gaseous fuel must have appropriate dew point suppression and be delivered such that proper flow and pressure is maintained throughout the operating range. Liquid fuel must have particulate matter removed and be delivered at the proper pressure. The following information should provide practical help to meet the requirements. Items to Think About Refer to Fuel Technical Reference Documents 410002 for information regarding fuel minimum and maximum pressure and temperature, contamination, calorific value, etc. Fuelpipingsizeshouldbedeterminedconsideringthelengthandpressuredrop. Fuel pressure requirements apply at the entrance to the MicroTurbine while the system is running. Provide pressure regulation for each MicroTurbine. This is especially important in MultiPac installations where the pressure may change from unit to unit. ProvideadequateclearancebetweenFuelOptionKitandMicroTurbine(recommended distance between 12 inches and 8 feet). If there is any condensate forming at the inlet of the MicroTurbine, the last chance filter is useful to see if there are any liquids making it through the upstream filters. This can be done by installing Capstone external fuel kits on all high pressure microturbine systems. Sour gas kits are required for biogas and sour gas applications. Sour gas kits offer valves and other components in stainless steel that may be required for some installations (i.e. in the oil industry), even if the fuel gas does not have sulfur content. The pressure regulator in the Capstone high-pressure external fuel kit must have at least 103 kPa (15 psig) pressure drop across it in order to hold a steady pressure as the upstream pressure fluctuates. This requirement is higher for low Btu systems at higher pressures. Check with the manufacturer and follow their guidelines. This requirement in turn dictates the compressor design point. Liquid knockout tanks upstream of the compressor may not have enough pressure to automatically purge through a float valve. A pump may be required to remove condensate. Biogas systems and other applications with wet gas should provide a gas/liquid separator immediately downstream of the compressor, and a refrigerated dryer/chiller to meet the Capstone fuel dew point specification: “Water vapor content must be at a minimum of 10oC (18oF) above its dew point anywhere within the fuel connections and the system between the Capstone Microturbine fuel inlet and the fuel manifold block” (410002) The use of existing pipe in a building is sometimes permitted, but it may be necessary to perform pressurized leak checks that use pressures that are higher than the normal service pressure. 410034 Rev E (December 2005) Page 7 of 16 This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respecttoequipmentpreviouslysoldorintheprocessofconstruction. PleasenotethatCapstoneisonlyresponsiblefortheMicroturbineandotherCapstoneproductsitsells,asprovidedforinCapstone’sProduct Specifications and warranties. Information provided in this document that relates to the system, as opposed to the Microturbine or other Capstone products, is not an indication that Capstone is taking responsibility for the systeminanywayandisprovidedonlyasgeneralguidance. CalculationsandtestingmustbeperformedtoverifythatdesignsolutionscomplywithalloftherequirementsofCapstone'sProductSpecification. All informationcontainedinthisdocumentisprovidedonan“asis”basis,anddoesnotaffectorchangeCapstone'sProductSpecificationsorwarranties. InnoeventwillCapstonebeliablefordamagesarisingdirectlyor indirectly from any use of the information contained in this document.PDF Image | Technical Reference Capstone MicroTurbine Installation and Permitting Guidelines
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