Rolls-Royce has launched a retrofit upgrade intended to provide many existing operators of industrial RB211 aeroderivative gas turbines with a power increase that (depending on ambient temperature and engine type) could be 10% or higher.
The upgrade is designated RB211-Gzero. Engineered as a modular package to make maintenance easier, the RB211-Gzero product is likely to be of most benefit to operators of the 440-plus worldwide installed fleet of RB211-C and RB211–G variant gas fired generators that feature RT-56 or RT-62 power turbines. The advertised power increase is achieved during routine gas turbine overhaul by retrofitting a modular package that increases the flow of air through the engine. This has the effect of increasing power availability at ISO conditions by 10 % for the RB211-G, and up to 31 % for the RB211-C, depending on the package configuration.
