高速运载器发电/制冷联合系统稳态性能

At present, the research of high-speed vehicle has become a hot issue in the field of aviation science at home and abroad. With the increase of speed, the traditional air heat sink can no longer be used as refrigerant of environmental control system alone. At the same time, the rapid increase of electronic equipment brings more heat load and more power consumption. Therefore, the power generation and refrigeration capacity become two major problems restricting the performance improvement of high-speed vehicle. Based on the basic air compressor refrigeration cycle and the existing fuel as the heat sink environmental control system, this paper proposes a new type of high-speed carrier power generation refrigeration technology, and makes a detailed analysis of its steady-state performance. This scheme can make full use of fuel as heat sink, effectively transfer airborne heat load to fuel when the fuel does not exceed the safe temperature limit, and finally send it to the engine for combustion. It can also realize the use of high-temperature and high-pressure air as power-driven power generation device to meet the power demand of high-speed carriers. Through detailed theoretical calculation and computer modelling and simulation, the research results show that under the conditions of 1.45 kg•s^-1, 644℃ and 3.89 bar (absolute pressure), the power generation of the system can reach 200 kW by adjusting the parameters of each component of the system to ensure that the maximum fuel temperature does not exceed 150℃, and at the same time, the temperature of the cabin can be controlled at about 30℃ under 100 kW heat load. It satisfies the requirement of high-speed vehicle for electric energy and the control of heat load very well.