Thermodynamic Analysis and Optimization of Brayton Process in a Heat RecoverySystem of Paper Machines

摘要

A theoretical study of an application of the Brayton process for heat recoverysystems in paper machines is presented, involving the development of a calculation model for the expansion process of moist air in turbines. The heat recovery systems are presented by means of temperature-entropy diagrams and the Brayton process is compared with a heat pump system based on the reverse Rankine process. The dependence of energy consumption is examined as a function of turbine and compressor efficiencies. The energy efficiency is also studied.