Purpose

This study seeks the effect on static thrust, thrust specific energy consumption (TSEC) and exhaust emissions of euro diesel-hydrogen dual-fuel combustion in a small turbojet engine.

Design/methodology/approach

Experimental studies are performed in a JetCat P80-SE type small turbojet engine. Euro diesel and hydrogen is fed through two different inlets in a common rail distributing fuel to the nozzles. Euro diesel fuel is fed by a liquid fuel pump to the engine, while hydrogen is fed by a fuel-line with a pressure of 5 bars from a gas cylinder with a pressure of approximately 200 bars.

Findings

At different engine speeds, it is found that there is a decrease at the TSEC between a range of 1% and 4.8% by different hydrogen energy fractions (HEF).

Research limitations/implications

The amount of hydrogen is adjusted corresponding to a range of 0–20% of the total heat energy of the euro diesel and hydrogen fuels. The small turbojet engine is operated between a range of 35,000 and 95,000 rpm engine speeds.

Practical implications

On the other hand, remarkable improvements in exhaust emissions (i.e. CO, CO₂, HC and NO_x) are observed with HEFs.

Originality/value

This is through providing improvements in performance and exhaust emissions using hydrogen as an alternative to conventional jet fuel in gas turbine engines.

中文翻译：

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小型涡喷发动机不同转速下欧柴氢双燃料燃烧研究

目的

本研究旨在研究小型涡轮喷气发动机中欧洲柴油-氢双燃料燃烧对静态推力、推力比能耗 (TSEC) 和废气排放的影响。

设计/方法/方法

实验研究是在 JetCat P80-SE 型小型涡轮喷气发动机上进行的。欧洲柴油和氢气通过共轨中的两个不同入口供给，将燃料分配到喷嘴。欧洲柴油燃料由液体燃料泵输送到发动机，而氢气则由压力为 5 巴的燃料管线从压力约为 200 巴的气缸中输送。

发现

发现在不同的发动机转速下，不同的氢能分数 (HEF) 在 1% 到 4.8% 的范围内降低了 TSEC。

研究限制/影响

氢气量根据欧洲柴油和氢燃料总热能的 0-20% 范围进行调整。小型涡轮喷气发动机在 35,000 至 95,000 rpm 的发动机转速范围内运行。

实际影响

另一方面，使用HEF 观察到废气排放（即CO、CO ₂、HC 和NO _x）的显着改善。

原创性/价值

这是通过使用氢气作为燃气涡轮发动机中传统喷气燃料的替代品来改善性能和废气排放。