A New Method for Improving the Efficiency of Organic Rankin’s Circulatory System

Abstract

In order to shorten the enterprise investment payback period of low temperature waste heat recovery projects, and to save energy, as well as to reduce emissions, this paper proposes a new method to improve the efficiency of organic Rankine's circulatory system. The generator coaxial connection design for the working medium pump and expander, can simplify the structure, and reduce the loss. Through thermodynamic calculation and analysis of the energy efficiency, and the damage analysis, as well as the efficient incremental formula shows that the optimized system efficiency increment is greater than zero. The theoretical calculation of a company's organic Rankine cycle shows that the system efficiency can be improved by 0.33% and the relative efficiency by 4.09% after adopting this method. In order to verify the research results, an experimental system was built and a simulation prototype was made. The test results showed that the net thermoelectric efficiency of the optimized system was improved by 0.41%~0.57%, and the lower the pump efficiency, the higher the efficiency of the optimized system was. Thus this method of improving the thermo electric efficiency has been validated.