No abstract

No abstract

The concept of industrial combined heat and power (CHP) systems has been put into practice for most of this century. Prior to the 1960’s, however, the chemical, petrochemical, iron and steel and paper industries normally installed CHP systems based on steam turbines. The oil crisis of 1973 brought an end of the era of secure low fuel prices. This crisis prompted successful moves towards improving energy conservation, mainly in thermal efficiency. The heat to power ratio was reduced in most industries, making the steam turbine system alone less attractive. Consequently gas turbines have frequently taken over as the basic prime mover for CHP systems, though associated with steam turbines in appropriate situations.