PDF Publication Title:
Text from PDF Page: 062
CHAPTER 7 Capstone PERFORMANCE Consider Tolerances The calculations described above provide a relatively simple method to estimate electrical output, fuel consumption, and exhaust characteristics for given operating conditions. These calculations are based on nominal values, and do not consider differences from microturbine to microturbine or the measurement inaccuracies for each of the key parameters. The Capstone C200 Product Specification (460045) provides curves showing minimum and maximum expected power and efficiency at sea level. A similar tolerance range of outputs can be expected for the impact of altitude and pressures. The following sections call out a suggested approach to using the performance information in this section. Grid Connect Applications When operating connected to a utility grid, Capstone microturbines will always attempt to provide the set power demand. In the case where the set power demand is greater than what the microturbine is able to produce, the microturbine will provide the maximum that it can, given the specific operating conditions. This actual output may be above or below the nominal calculations defined above for that specific operating condition. For purposes of making economic projections, it is suggested that the nominal output be used, since this is what would be expected on average for a fleet of microturbines. Note that the C200 operating in Grid Connect mode will generate real power (kW) at essentially unity power factor. This means that the apparent power (kVA) is equal to the real power (kW), and no reactive power is either provided to or taken from the utility grid. Stand Alone Applications Stand alone applications are more complicated than Grid Connect because only the microturbines are being relied upon for load power. Each microturbine will try to maintain its pre-set voltage, regardless of the connected loads. If the load is above the capability of the engine to provide continuous power, the batteries in the microturbine will supply the shortfall in an attempt to keep the system running. If this overload condition continues, the batteries will ultimately be drained and the system will eventually shut down. It is therefore suggested that steady state loads be sized based on the following steps: 1. Worst Case Operating Environment – For a given site location, “nominal” power should be estimated based on the actual elevation, highest expected ambient temperature, and any other de-rating considerations such as for inlet pressure loss or exhaust back pressure and any parasitic loads. 2. Minimum Performance Band – To account for variation between microturbines, a minimum power band should be calculated by subtracting 10kW from Step 1. 3. Load Safety Margin – As would be normal practice for any Stand Alone prime mover, a reasonable amount of head room should be allocated to cover unexpected load increases and/or normal variation in load tolerances. Connected loads should therefore not be sized to exceed 85% of the minimum performance band from Step 2. 410066 Rev C (June 2009) 7-14 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
PDF Search Title:
CAPSTONE C200 MICROTURBINE TECHNICAL REFERENCEOriginal File Name Searched:
410066C_C200_Tech_Ref.pdfDIY PDF Search: Google It | Yahoo | Bing
Capstone Turbine and Microturbine: Capstone microturbines used and new surplus for sale listing More Info
Consulting and Strategy Services: Need help with Capstone Turbine, sizing systems, applications, or renewable energy strategy, we are here to assist More Info
Container Lumber Dry Kiln: Since 1991 developing and innovating dry kilns using standard shipping containers More Info
Supercritical CO2 Lumber Dry Kiln: Compact fast drying in 3 days or less for small amounts of wood and lumber drying More Info
BitCoin Mining: Bitcoin Mining and Cryptocurrency... More Info
Publications: Capstone Turbine publications for microturbine and distributed energy More Info
FileMaker Software for Renewable Energy Developing database software for the renewable energy industry More Info
CO2 Gas to Liquids On-Demand Production Cart Developing a supercritical CO2 to alcohol on-demand production system (via Nafion reverse fuel cell) More Info
Stranded Gas for low cost power Bitcoin Mining Using stranded gas for generators may provide breakthrough low power costs for cryptocurrency miners. More Info
CONTACT TEL: 608-238-6001 Email: greg@globalmicroturbine.com (Standard Web Page)