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• Operation mode (flame detection and monitoring, overspeed and overload monitoring and control, air flow monitoring and control) An emergency shut down procedure can also be carried out. In case of interference of the Gas Safeguard Module, the procedure is to wait for a new starting request. It is then locked in this mode till an external reset signal is received. When meeting at starting conditions, the Capstone microturbine will be starting and fulfilling its own routing program. At ignition, the gas supply must be released by giving the safety valve a command from the Capstone controls and giving the external safety valve a release command from the Gas Safeguard Module. The whole microturbine process will be controlled by the Gas Safeguard Module (see Figure 3). If the successive conditions conflict, an emergency shut down procedure will be carried out. Heat requiring process Gas Safeguard Module ( PLC ) External bleed valve Request to start Run Fuel on Start External shut down valve Capstone microturbine NG flow indicator Temperature signal TET Flow indicator combustion air Flow indicator ventilation air Bypass valve Figure 3 Principle Gas Safeguard Module The design has been reviewed by the safety department of N.V. Nederlandse Gasunie, which is also responsible for the gas safety standard contents. A definite design of the Gas Safeguard Module has been made for both Capstone 30 and 60 kWe microturbines, using different software parameters. High Efficiency Natural Gas Compressor (Ex) Commercially available natural gas compressors for microturbines (< 100 kWe) for inlet pressures of 25 mbar are not efficient enough (electrical power consumption > 3 kWe at full load gas flow of Capstone 30 kWe microturbine) or oversized (e.g. Compare V04G) or too expensive. The Capstone 30 kWe NG LP with internal foil bearing rotating flow compressor (FB RFC) was tested by Gasunie Engineering & Technology using Groningen-gas (G-gas) of 25 mbar, and delivered approx. 24 kWe of electrical power to the grid. The reason for this is the limited maximum capacity of relative low calorific Groningen-gas of this internal FB RFC.PDF Image | DEMONSTRATION OF CAPSTONE MICROTURBINES INCLUDING HIGH EFFICIENCY HEAT EXCHANGER, GAS SAFEGUARD MODULE AND NATURAL GAS COMPRESSOR, DEVELOPED BY GASUNIE ENGINEERING & TECHNOLOGY
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DEMONSTRATION OF CAPSTONE MICROTURBINES INCLUDING HIGH EFFICIENCY HEAT EXCHANGER, GAS SAFEGUARD MODULE AND NATURAL GAS COMPRESSOR, DEVELOPED BY GASUNIE ENGINEERING & TECHNOLOGYOriginal File Name Searched:
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