燃烧室热力计算的一种新方法

本文根据燃气轮机燃烧室热力计算的“非迭代精确法”原理,推导了使用液体或气体燃料的燃气轮机.蒸气轮机联合循环研究中几种燃烧室热力计算的通用公式,并从两个不同角度,将其与国内常用的“等温焓差法”进行对比分析,揭示了它们之间的内在联系.

A NEW METHOD FOR THE THERMODYNAMIC CALCULATION OF COMBUSTION CHAMBERS

For the thermodynamic calcnlation of the inas tolbie combustion chamber there are two methods to be selected, "Non-Iterative Precise Method" (NIPM) "Isothermal Enthalpy Difference Method" (IEDM)o According to the principle of NIPM, a general solution of the energy equilibrium equation for main combustion chamber, the reheat combustor and the exhaustfired burners in the gas turbine and steam turbine combined cycle, using gaseous or liquid fuel is developed in this paper. With both methods analysed and compared, the internal relation between them are also discussed. It is shown that IEDM is the linear approximation of NIPM, and the fuel-air ratio calculated by the former is slightly less than that by the latter, but their relative difference won't exceed 0.5 percent. The general solution provided in this paper can be also conveniently applied to the ther-modynamic calculation of all kinds of engine combustion chamber Using gaseous or liquid fuel in aerospace.