نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
One of the disadvantages of microturbines, which are used as combined heat and power units, is the constant ratio of thermal power to electrical power at each operating point. A method that has recently been employed to address this issue and enable a variable thermal-to-electrical power ratio at any rotational speed is water injection into the microturbine. In this study, the Turbec T100 microturbine has been investigated. Initially, the performance of the Turbec T100 was simulated and validated against experimental results. Subsequently, by adding a heat recovery steam generator after the compressor and converting the Turbec T100 into a wet microturbine, the simulation code was upgraded, and the off-design performance of the wet microturbine was simulated. The results indicate that, with water injection, the electrical power and efficiency increase at all rotational speeds, while the thermal power and efficiency decrease. The maximum steam injection rate into the engine at 67,940.67 rpm is 0.03769 kg/s, which leads to a 33% increase in electrical power and a 62% decrease in thermal power. Therefore, by injecting different amounts of steam at each speed, it is possible to achieve a variable electrical-to-thermal power ratio.
کلیدواژهها English
