A new approach of cascade utilization of the chemical energy of fuel

The indirect release of chemical energy of fuel is investigated, and a new mechanism is proposed to identify the cascade utilization of chemical energy of fuel more clearly. Based on the concept of energy level, the internal phenomenon of the indirect chemical energy release is disclosed, and the equations of energy level describing the utilization of chemical energy and thermal energy during the indirect chemical energy release process are obtained. From theoretical analysis, we find that the superiority of the indirect chemical energy release of fuel comes from the cascade utilization of the fuel's chemical energy. Moreover, the cascade utilization of chemical energy is verified by the investigation of CRGT (chemically recuperated gas turbine). As a result, the thermal exergy obtained from the chemical energy release of fuel increases by 2 % -3 %. The results obtained here may help a deeper understanding of indirect chemical energy release of fuel and provide a theoretical basis for the synthesis of innovative energy systems.

作 者： HAN Wei JIN Hongguang LIN Rumou   作者單位： HAN Wei(Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China; Graduate School of the Chinese Academy of Sciences, Beijing 100080, China)

JIN Hongguang,LIN Rumou(Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China) 

刊 名： 自然科學(xué)進(jìn)展（英文版）  SCI 英文刊名： PROGRESS IN NATURAL SCIENCE  年，卷(期)： 2006 16(5)  分類號(hào)： O6  關(guān)鍵詞： chemically recuperated gas turbine   methane/steam reforming   chemical energy level   cascade utilization  

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