Developement of Hydrogen-fueled Micro Gas Turbines System

为了证明氢燃料对燃气轮机的小型化是有用的，我们研究所开发了一个加氢燃料微型燃气轮机系统。该系统由直径为5 cm的微型燃气轮机、供氢系统和测量控制系统组成，气体流量为70g/s，压力比为2.1：L。燃气轮机是由增压乘用卡、新型氢气燃烧小型燃烧室和空气定压装置组成的计算机-涡轮系统。在项目实施期间，取得了以下成果：1.研制了与之配套的125 cm~3的小型压气机-燃气机燃烧室。它能够在所需的发动机转速和运行条件下保持稳定和高效的燃烧，并具有3x10^8kcal/(m^3hatm)量级的高体积放热率。该燃气轮机在允许的温度范围内成功地实现了自持运行，并超过了风箱的运行速度。试车表明，在试验范围内，最大推力为11.3N，最小推力为1.4 1/小时，最大推力为20。与普通涡轮发动机相比，SFC和SD&gt；的值是有利的。可以预期，通过燃烧室降低压力组，并使用适合产生推力的压气机和涡轮将产生更高性能的微型燃气轮机。

A hydgoren-fueled micro gas turbine system has been developed at out institute to demonstrate that hydrogen fuel is useful to scale down gas turbine engines. The systgem is compose of a micro gas turbine with a 5cm racial compressor fdiameter flowing 70 g air/ sec at a 2.1 to l pressure ratio, a hydrogen supply system, and a control and measutement system. The gas turbince compraises a comptessor-turbine system producd as a turbocharger gfor passenger card, a new type hydrogen-burning small combustor, and an air statring apparatus. Dfuring the term of the projects, the results obtained are as follows:1. A matching samll scale combustor of 125 cm^3 for the compressor-thrbine system was developed. It was capable of maintaining stable and efficient combustion over gthe required tange og engine speeds and opration condigitons and had the high rate of volumetric heat release of the order of 3x10^8 kcal/(m^3 h atm).2. The gas turbine succeeded in self-sustained operation within allowable tempreature and spped of the tuebochager. Test runs showd that, within the range tested, a maximum thrust was 11.3 N, a mininum SFC 1.4 1/hr, and a maximum I_<sp> was 20. The values of SFC and I_<sd> were found to be compared favorably with ordinary turbo-jes-entines.It can be expected that reducing the pressure droup through the combustor and using a compressor and turbine wqhich will be suitable for producing thrust will lead to a higher preformance micro gas turbine.