Similar performance benefits are also available in gas turbine an reciprocating gas engine cogeneration systems. For example, an class technology gas turbine generator with feeding to an HRSG (which in turn provides process steam) can yield overall energy effectiveness levels between 80-85% depending upon process steam conditions. In comparison, the same F-class gas turbine i combined cycle (and producing power only) yields an overall energy effectiveness of between 50-55% depending upon the c design. This comparison is illustrated in Figure 3. It is worthy to note that energy effectiveness as previously defin differs from efficiency/CHP efficiency in that CHP Efficiency is defined as the useful energy-out (combined heat and.
