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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: Offshore/Coastal Systems – Hazardous and Non-hazardous Installations Description of Components Performance details for the MicroTurbine system may be found in the Model C30 and C60 Performance Technical Reference manuals (410004 and 410005). Pressurization System The pressurization system utilizes two ventilator blowers housed in the MicroTurbine’s air intake section. Each ventilator provides airflow to the engine and electronics air intake. The pressurization system and accessories draw a total load of about 1.5 kW. Both motors, blower housing, impellers, and their internal wiring comply with Class I, Div. 2 specs for groups C and D (NFPA 496). See the Appendix B, “Blower Fan” for details. The required inlet duct is a 35.6 cm (14 inch) diameter, with equivalent max. length of 10.7 m (35 feet). This equivalent length is an approximation, comprised of a 9.1 m (30 feet) straight run plus three 90° elbows. The duct is usually constructed of 16-gauge spiral pipe, hot dipped galvanized steel with epoxy coating or stainless steel. The air intake of the stack must be placed in a non-classified area for compliance with Class I, Div 2 approval. Stack Assembly The stack assembly is comprised of the following components: • Air intake stack. The duct is 35.6 cm (14 inch) diameter and usually constructed of 16-gauge spiral pipe, hot-dipped galvanized steel with epoxy coating or stainless steel. The duct run is comprised of the necessary straight sections and nineties to accommodate the installation layout. The air intake of the stack must be placed in a non-classified area. Failure to do so will void the Class I, Div 2 approval of the system. It is the installer’s responsibility to comply with NFPA 496, as well as other local applicable codes. • Engine exhaust pipe. Comprised of black, stainless steel or galvanized 20.3 cm (8 inch) pipe. The exhaust temperature on the MicroTurbine can reach up to 530° F. The exhaust pipe must be insulated throughout the classified area so that the maximum temperature does not reach T3 rating (392° F). The insulation material is required to be non-porous so that gas cannot penetrate it and reach the hot internal surface. The exhaust pipe has to end in a non-classified area. Failure to follow the previous procedures will void the Class I, Div 2 approval of the system. It is the responsibility of the installer to comply with NFPA 496, as well as other local applicable codes. • Package exhaust stack. The duct is 20.3 cm (8 inch) diameter and usually constructed of 16-gauge spiral pipe, hot dipped galvanized steel with epoxy coating or stainless steel. The duct run is comprised of straight sections and nineties to accommodate the installation layout. The stack’s air exhaust end must be placed in a non-classified area. Failure to do so will void Class I, Div 2 approval of the system. Compliance with NFPA 496 and other local applicable codes, is the responsibility of the installer. 480010-001 Rev. A (February 2005) Page 13 of 23 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 respect to equipment previously sold or in the process of construction.PDF Image | Application Guide Offshore/Coastal Systems - Hazardous and Non-Hazardous Installation Options for the Capstone MicroTurbine
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