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论文类型：期刊论文

发表时间：2008-01-01

发表刊物：International Journal of Low Carbon Technologies

收录刊物：EI、Scopus

卷号：3

期号：3

页面范围：139-146

ISSN号：17481317

摘要：This study presents the thermodynamic model of a heat, power and gas cogeneration system. The energy utilization coefficient μ, which is the ratio of the sum of gas calorific value and heat supplied to the boiler to the low calorific value of coal, is used as a criterion to evaluate the performance of the multi-production system. The emphasis was placed on the vaporization of the coal and the combustion in the boiler. For gas output 10,000 m3·h-1and boiler steam load 130 t·h-1, the change of gross coal consumption and energy available coefficient μ of the cogeneration system is calculated at different pyrogenation temperatures with three types of coals. The results show that the energy available coefficient has a maximum value for the cogeneration system, and the gross coal consumption of the cogeneration system is lower than that of two separation systems. In a large range of feeding coal to the boiler, the system gross coal consumption reaches its minimum value and the energy available coefficient μ reaches maximum when pyrogenation temperature is 700°C. And the optimal is realized at a higher temperature.