Cogeneration Cycle in Water Heating Boilers

Abstract

Cogeneration – joint generation of electricity and heat brings savings in consumption of primary fuels. Therefore, it contributes to reduction of harmful substances emission to the atmosphere (CO2 emission), which also means reduction of external costs of energy and heat generation. Until present, the cogeneration cycles have not been used in heating plants equipped with water boilers (in particular the water-tube ones). This paper presents a concept of innovative cogeneration cycle which operates with a water heating or industrial boiler. The cogeneration cycle does not change the approval of technical parameters of the boiler and it does not limit the scope of its use. The developed comparative cycles in the h-s and T-s systems and simulation model of the unit cogeneration cycle are presented as diagrams and cogeneration indicators. Furthermore, economic indicators of cogeneration are presented for water boilers.