A new principle of synthetic cascade utilization of chemical energy and physical energy  

作　　者：JIN Hongguang1, HONG Hui1,2, WANG Baoqun1,2, HAN Wei1,2 & LIN Rumou1,2 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China 

出　　处：《Science China(Technological Sciences)》2005年第2期163-179,共17页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.90210032 and 59925615);the National Basic Research Program of China(973)(Grant No.G1999022302).

摘　　要：We propose a new principle of the cascade utilization of both chemical energy and physical energy in energy systems with the integration of chemical processes and thermal cycles. Particularly, a general equation of energy levels of substance, Gibbs free energy of chemical reaction and physical energy is explicitly founded. On the basis of this equation, a chemical-looping combustion and an indirect combustion are investigated. Furthermore, a mechanism of energy release, with the combination of decreasing the energy level of Gibbs free energy and upgrading the energy level of low or middle- temperature thermal energy, is clarified. The promising results obtained here establish a theoretical basis for the further investigation of multi-function systems in which energy and the environment are compatible, and create a new approach to improve the performance of traditional thermal cycles.We propose a new principle of the cascade utilization of both chemical energy and physical energy in energy systems with the integration of chemical processes and thermal cycles. Particularly, a general equation of energy levels of substance, Gibbs free energy of chemical reaction and physical energy is explicitly founded. On the basis of this equation, a chemical-looping combustion and an indirect combustion are investigated. Furthermore, a mechanism of energy release, with the combination of decreasing the energy level of Gibbs free energy and upgrading the energy level of low or middle-temperature thermal energy, is clarified. The promising results obtained here establish a theoretical basis for the further investigation of multi-function systems in which energy and the environment are compatible, and create a new approach to improve the performance of traditional thermal cycles.

关 键 词：chemical energy  CASCADE utilization  exergy  ENERGY conversion. 

分 类 号：TK91[动力工程及工程热物理]