Optimization analysis of pure low-temperature waste heat power generation system

A thermodynamic model of pure waste heat power generation system has been built to analyze the effects of steam pressure, inlet gas temperature and pinch point temperature difference on the generating performance of the system. Results show that for design of a pure low-temperature waste heat power generation system, there exists an optimal superheated steam pressure under which condition maximum power output per unit volume of flue gas can be obtained. Both the power output per unit volume of flue gas and the corresponding optimal overheated steam temperature increase with the rise of inlet gas temperature, but decrease with the enlargement of pinch point temperature difference.