Study of “Dual Pressure Radial Turbine”

(Part 3 : Features of Power Systems with Dual Pressure Radial Turbines）)

Abstract

Features of power generation systems with “the Dual Pressure Radial Turbine” utilizing intermediate and low temperature waste heat and geothermal energies are shown. The turbine with a single radial turbine wheel can be applied to each of the power generation systems consist of two temperature heat sources and two pressure cycles. And also it can be applied to power generation systems consist of a single heat source and two pressure cycles. In the former applications, two different temperature heat sources such as waste gas and jacket water of reciprocating engines can be used to power generation using the turbine with a single radial turbine. In the latter applications, the output power of power generation systems par unit heat source flow rate is about 14% to 24% larger than conventional single pressure power generation cycles, when temperature of hot water as heat sources is 125°C to 85°C respectively. The dual pressure turbines have less leakage portion and less axial thrust comparing with conventional turbines with two turbine wheels. “The Dual Pressure Radial Turbine” is hopefully applied to actual power generation systems.