| CHP for Medias Hospital Medias city Sibiu County Medias, Romania    PDF Summary |
The Microturbine produces in cogeneration system high-efficiency power (0.4/50 Hz) and heat from exhaust gas using natural gas as fuel. In the case of natural gas supplied from the distribution networks, it is necessary to mount a compressor downstream of the microturbine to ensure the minimum required pressure of 5.2 bar. Natural gas supply installation consists of o sectioning valve (with sphere, slide pinion valve, or butterfly) # 8.01 which separates the gas supply installation of the microturbine, of the main supply column of the existing central heating boilers. As a safety feature in the case of exceeding certain parameters of installations downstream of the microturbine (SRH- exhaust gas heat exchanger/water), an electromagnetic valve is being mounted #8.17, which is controlled by a PLC (Programmable Logic Controller). The gases are filtered by filter # 8.06. and their pressure adjusted by the locking device regulator and overpressure device # 8.00. Flow metering is made via turbinemeter # 8.07 and of PTZ volume corrector # 8.08. Natural gas are thus vacuumed into the gas compressor # 8.09 at a pressure of 100 mbar input up to 110 mbar, and are repressed at a pressure of 5.2 bar.As a safety element downstream of the compressor is mounted a purge valve # 8.19 to eliminate overpressures that may arise from sequences of stop / start (pick shaving). The gases resulting from the combustion of the microturbine #CHP-MT, are discharged through the exhaust duct, damper sense # 1.01, and through the by-pass equipped with butterfly valve #1.03 to be directly in the air on the chimney # 1.08 ( in the case that is desired the exclusive production of electricity, in certain sequences of stop/start, and when temperature and /or the pressure of the SRH heat exchangers exceed the set parameteres), to be passed through the heat exchanger #1.04 thus ceding the heat of the water flowing through it. The water’s temperature for flow/return, in the heat exchanger is 90/70 degrees Celsius. |