Direct organic rankine cycle system, biomass combined cycle power generating system, and method for operating a direct organic rankine cycle

摘要

According to an aspect of the present disclosure, a direct organic Rankine cycle system (200) for generating power using a working medium may comprise a boiler subsystem (234) comprising a pump (236) and a boiler (238), the pump (236) configured to pump the working medium through the boiler (238); a vapor separator (232) connected to a working medium outlet (246) of the boiler (238) and configured for separating a gaseous phase of the working medium; an organic Rankine turbine module (210,410) fluidly connected to the vapor separator (232), the organic Rankine turbine module (210,410) comprising a turbine (212) driven by the separated working medium gaseous phase; a control system (305) configured to control the pump (236) for adjust the circulation speed of the working medium through the boiler (238) such that at least 15%, 20 %, 30 %, 40 %, or 50% of the working medium are maintained in the liquid phase when exiting the boiler (238).