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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Heat Recovery Module for Model C200 Microturbine Microturbine and Facility Interconnections Refer to the following paragraphs for important guidelines related to the mounting and interconnection of the HRM. Mounting Considerations The HRM is designed to be mounted according to the layout in O&I drawings 523646. Consult Capstone if other HRM orientations are required. Make sure that the HRM is level before final welding and/or bolting into position. Exhaust Ducting O&I drawing 523646 shows the exhaust ducting assembly provided by Capstone to connect the C200 microturbine to the inlet of the HRM. A standard exhaust stack with exhaust flap suitable for outdoor application is included. This stack and flapper assembly can be replaced with customer-supplied exhaust ducting if the system is to be mounted indoors or exhaust needs to be diverted away from the location shown on O&I drawing 523646. Note that total exhaust backpressure cannot exceed the specifications for the C200 microturbine under all operation conditions. Exhaust connections are standard 12 inch 150 lb flanges, as shown on the O&I drawings. Pay particular attention to thermal expansion from exhaust ducting. Apply expansion joints as required to ensure that there is no unnecessary pressure from thermal expansion on the exhaust connections. The C200 HRM system package has been designed for indoor or outdoor applications. An outdoor exhaust flapper is included as standard, so for most outdoor applications no additional exhaust ducting will be required. For indoor applications, or outdoor applications requiring duct extensions, suitable insulated exhaust ducting will be required. Several factors must be considered when designing suitable exhaust ducting: 1. Backpressure – Exhaust ducting must be pressure rated, and properly sealed to avoid buildup of exhaust fumes. The C200 microturbine will provide positive exhaust flow under normal operation. However, the exhaust system must limit backpressure to no more than 6 inches of water column under all operating conditions. Nominal exhaust flow rate at full power is 1225 l/s or 2,600 standard cubic feet per minute (scfm). This is roughly 5,000 cfm when adjusted for temperature. The exhaust outlet of the C200 HRM system is 12-inch diameter. Guidance for backpressure calculations is available from ducting manufacturers. If the system design includes a backflow damper (ref item 5 below), use 0.6 inches of water column as the estimated forward pressure drop across the damper. 2. Temperature Rating – At full power and without heat recovery, the nominal exhaust temperature of the C200 is less than 600°F (316 °C). However, during transient conditions and/or high ambient temperature operation, the exhaust can reach 700 °F (371 °C). Therefore, exhaust ducting must be rated for at least 700 °F (371 °C). In addition, sufficient thermal insulation should be provided to avoid hazards to 410070 Rev. A (July 2008) Page 11 of 15 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. WARNING For existing installations, make sure that the Microturbine has been turned off and has cooled sufficiently to prevent injury to personnel or damage to equipment.PDF Image | Technical Reference Model C200 Heat Recovery Module
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