Increasing energy yield of thermal power stations - by installing steam generator in tapping on low pressure side of recuperator

摘要

In a gas cycle producing energy with additional recovery of heat, a heat source supplies a fluid at high temp. and pressure to an expansion turbine, to the outlet of which is connected >=1 recuperator. The fluid issuing from the recuperator passes through a cooler and a compressor, which returns the fluids at high pressure to the heat source via the other side of the recuperator. A steam generator is connected to the low pressure side of the recuperator to extract additional heat. The recuperator and the steam generator may each comprise two separate appts. in series, pref. with the steam generator in parallel with the recuperator. A gas cycle contg. any heat source cna include a steam generator in this manner. An installation of this type can keep a high net yield of electricity while producing a significant quantity of industrial quality steam. An efficiency of the thermal recuperators of about 0.95 can be obtd. with improved generating yield equivalent to that obtd. using intermediate cooling, but at lower cost.