Jenbacher AG (JAG) has designed with General Electric (GE) a new container-based gas engine gen-set package for the GE rental fleet. All necessary system components like the natural gas engine, alternator, cooling fans, electrical units and auxiliaries are integrated in one 40-foot ISO container which is normally placed on a trailer truck. A unit weight of less than 53,000 lbs ensures easy transport from site to site. The gas and electricity connections are designed to ensure the lowest possible installation and setup times. The application of a closed loop cooling system inside the container has the advantage that no additional connections are necessary. Connections for heat recovery are integrated, and can easily be utilized if there is a demand. Another important feature is that the gen set is not influenced to a great extent by changes in environmental conditions. Ambient temperatures of up to 104 deg F (40 deg C) are still permissible without reduction of power output. Container insulation and exhaust gas silencer design are optimized to attain a noise level of 74 dB(A) at a distance of 7 m. When operating the GE rental units at 60 Hz as well as at 50 Hz, the engine speed can be selected accordingly to 1800 rpm and 1500 rpm. The nominal electrical power output is not affected by these two engine speed conditions. To make this feature possible, special engine tuning has been applied by using a new turbocharging system supported by the Jenbacher boost control system. The change in speed is realized with small mechanical adaptations and primarily by changing of software parameters in the electronic control system. For both operation modes extremely low emission limits can be achieved with the lean burn gas engines. One more characteristic of the Jenbacher concept is the vibration-optimized design of engine components for the 1500 rpm and 1800 rpm speeds.
The GE/Jenbacher 1MW dualspeed gas engine concept for the GE rental fleet
Das 1MW-Zweidrehzahl-Gasmotorkonzept von General Electric und Jenbacher für den Mietleasing-Fuhrpark von General Electric
2001
7 Seiten, 12 Bilder, 1 Tabelle, 6 Quellen
Aufsatz (Konferenz)
Englisch
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