Efficiency Analysis of the Turbine using Calorific Value Parameters for a 10 Megawatt Gas Turbine

R. Amadi, Charles David
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Abstract

This research is based on the thermodynamic performance of a gas turbine power plant.  It considered the variation of operating conditions, i.e. the ambient temperature, the compressor outlet temperature, pressure ratio, etc. on the performance of the gas turbine thermal efficiency, turbine work, compressor work, etc. which were derived and analyzed.  The Gross (higher) calorific values at constant pressure () heat of combustion in a flow process from state 1 to state 2 was considered and used to analyze our thermal efficiency.  The results show that the ambient temperature and air to fuel ratio strongly influence the turbine work, compressor work and thermal efficiency.  In addition, the thermal efficiency and power decreases linearly with increase of the ambient temperature.  However, the efficiency analyzed when the calorific parameters were considered was higher than the efficiency when the basic thermodynamic theories (first and second law principles) were used.  The first ranges between 31% to 33, while the second ranges between 28% to 32% under the same ambient temperature conditions
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基于热值参数的10兆瓦燃气轮机效率分析
本研究以某燃气轮机电厂热力性能为研究对象。考虑了工况的变化,即环境温度、压气机出口温度、压力比等对燃气轮机热效率、涡轮功、压气机功等性能的影响,并对其进行了推导和分析。考虑了从状态1到状态2流动过程中的总(较高)恒压热值(燃烧热),并用它来分析热效率。结果表明,环境温度和空燃比对涡轮功、压气机功和热效率有较大影响。热效率和功率随环境温度的升高呈线性下降。然而,考虑热学参数时的效率高于使用基本热力学理论(第一定律和第二定律)时的效率。在相同的环境温度条件下,前者的范围在31%到33%之间,而后者的范围在28%到32%之间
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