Clients with high energy efficiency requirements can now take advantage of the Dresser-Rand business’ new Guascor® HGM 420 gas engine. The newest model in the Guascor HGM engine family, it offers a balanced relationship between efficiency, reliability and price.
The Guascor HGM 420 model provides 1 MWe of power and extends the Guascor HGM family of low emissions, lean burn, spark-ignited gas engines that employ Miller Cycle technology. The 42-liter, V12 engine (bore 160 x stroke 175 mm) is rated 1,040 kW mechanical and 1,010 kW electrical at 1,500 rpm. The engine achieves greater than 42 percent mechanical efficiency and its electrical efficiency exceeds 41 percent.
The Guascor HGM 420 gas engine is normally connected to an external grid and is suitable for projects that require approximately 1 MWe of power. With high thermal demand and continuous operation, these engines can be supplied as standalone power units, as part of a cogeneration system on a skid, packaged as a gen-set, or containerized.
In addition to its electrical efficiency, the Guascor HGM 420 gas engine is able to recover heat from main and auxiliary water circuits, as well as heat from exhaust. It achieves approximately 91 percent thermal efficiency and can run more than 8,000 hours per year with the balance of the year set aside for routine maintenance.
The Guascor HGM 420 model is also available at 1,800 rpm, with 1,040 kW mechanical and 1,006 kW electrical. The engine achieves greater than 40 percent mechanical and 39 percent electrical efficiencies, respectively, as well as 90 percent of total heat efficiency. The overall power range of the Guascor HGM family is 520 to 1,240 kW at rated speeds from 1,500 to 1,800 rpm. These engines can burn a wide variety of fuels including natural gas, biogas from anaerobic digestion of organic matter, methane from landfill sites and sewage plants, and most any type of gas derived from bio digestion processes.