Design of a technology demonstration closed Brayton cycle engine for small electrical power generation application.

摘要

A requirement to dispose of waste oils in remote communities, in an environmentally friendly and cost effective manner, has initiated interest in developing an engine for small electrical power generation that is capable of utilizing waste oils. Through an assessment of numerous engine technologies, it has been determined that the closed Brayton cycle (CBC) engine is most suitable and potentially most cost effective technology for this market requirement.; The CBC engine design is initiated by performing detailed thermodynamic cycle calculations, for which the theory is presented. Cycle arrangement and working fluid is selected based on cycle calculations and CBC engine requirements. Gas operating conditions and component performance specifications are selected by performing a parametric analysis on the effect on cycle performance. It has been decided to utilize air as a working fluid since it is cost-effective to replenish in remote areas. The recuperated free-turbine arrangement has been selected since it offers the highest performance at lowest cost, and offers a simple means of mechanical attachment of the alternator. (Abstract shortened by UMI.)