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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: C30 and C60 Hybrid Electric Vehicle (HEV) Application Information for Capstone Engine Heat Rejection The MicroTurbine combusts fuel to make power and therefore produces heat in the process. The recuperator is designed to capture this heat and preheat the compressed air before entering the combustor. Insulation is used to help keep this heat within the recuperator. The surface temperature of this insulation can range from 163 to 288°C (325 to 550 F) depending on location. Maximum heat rejection is up to approximately 2000 watts. The OEM/Integrator is not required to remove this heat for system operation but it is recommended that care be taken to not allow this heat to come in contact with combustible materials. In addition, this heat should not be allowed to heat the generator housing or fuel components beyond their maximum specification during operation. Fans or vents can be used to draw the heat out of an enclosure. It is not recommended to blow cool air onto the hot components since this may cause reduced efficiency or could direct hot air onto other components. It is recommended to install a heat shield between the generator housing and the recuperator if the engine will be installed in an enclosure. The heat shield can be sheet metal with insulation attached. This shield will keep the engine divided into a hot compartment side and a cool compartment side. The recuperator side of the engine should be kept hot and the generator side should be kept as cool as possible. This helps keep the generator housing form heating up, thus heating the engine inlet air, and causing a derating due to elevated inlet temperatures. Figure 15 shows the typical layout inside an enclosure with a heat shield installed to split the compartment into hot and cold sections. Figure 15. Typical Layout of Engine with Heat Shield 480009-001 Rev B (October 2004) Page 32 of 54 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 Model C30 and C60 HEV Application Information
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