Cogeneración | CHP FuturEnergy | Octubre October 2019 www.futurenergyweb.es 41 El sistema de conductos está constituido por un total de 90 m de colector (con diámetros entre 760 y 1.625 mm) más unos 110 m de conductos individuales de salida de las microturbinas (de 400 mm de diámetro). Finalmente, a la entrada del atomizador se dispone de una válvula de regulación y aislamiento de gases (con aire de sellado), que viene regulada por el atomizador a través del sistema de control de auxiliares, y se encarga de regular el flujo de gases que entran al atomizador cuando las microturbinas operan siguiendo a la carga eléctrica de fábrica. Equipamiento de control Los equipos principales (microturbinas y atomizador) disponen de su propio sistema de control. Por otro lado, se dispone de un sistema de control de auxiliares, responsable del funcionamiento conjunto de microturbinas y atomizador y encargado del control del nuevo ventilador y válvula de gases. Dicho sistema de control de auxiliares, suministrado por la compañía española SIGE, asegura la correcta operación del conjunto y permite conmutar entre los distintos modos de funcionamiento, comunicando e intercambiando señales con los sistemas de control de microturbinas y atomizador. Similarly, when the microturbines are operating in thermal mode (adapting their load to the needs of the spray-dryer), the fan is responsible for introducing all the gases into the spraydryer, avoiding losses via the vent. Should gas demand exceed microturbine production, the fan itself can regulate the entry of air via the same exhaust vent or, alternately, the spray-dryer can intake air via its inlet nozzle. The gases travel through this centrifugal fan to the spray-dryer inlet, located some 50 metres from the microturbines genset. The duct system comprises a total of 90 metres of collectors (with diameters between 760 and 1,625 mm) plus some 110 metres of individual ducts from the microturbines outlet (400 mm in diameter). Finally, the spray-dryer inlet is equipped with a regulation and gas insulation valve (with sealing air), which is regulated by the spray-dryer by means of the auxiliary equipment control system. This valve is responsible for regulating the flow of gases entering the spray-dryer when the microturbines are operating depending on the electrical load of the factory. Control equipment The main equipment (microturbines and spray-dryer) have their own control system. The installation is also equipped with an auxiliary equipment control system, responsible for the overall operation of the microturbines and spray-dryer and for controlling the new fan and gas valve. This auxiliary control system, supplied by the Spanish company SIGE, ensures the correct operation of the system as the whole and allows switching between the different operating modes, communicating and exchanging signals with the microturbine and spray-dryer control systems. Pau Abril Dirección de Proyectos, AE, S.A. Asesoría Energética Project Management, AE, S.A. Energy Consultancy Datos básicos ventilador de gases | Basic data on the exhaust fan Fabricante | Manufacturer Twin City Fan | Twin City Fan Modelo | Model BCS Tamaño | Size 730 Unidades | Units 1 Diámetro de rodete | Impeller diameter 1.9 m Datos nominales de operación | Rated operating data Caudal volumétrico | Volumetric flow 71.2 m3/h Velocidad de giro | Rotation speed 1054 rpm Consumo eléctrico | Electricity consumption 294 kW Eficiencia total | Total efficiency 78% Datos del motor | Motor data Potencia | Output 300 kW Velocidad | Speed 1190 rpm Voltaje | Voltage 480 V (60 Hz) Tabla 4 | Table 4
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