The invention provides a phase change working medium for an aerostat and an aerostat buoyancy regulation and control system and method.The phase change working medium for the aerostat comprises a mixture formed by ammonia and at least one of hydrofluorocarbon, olefin, alkyne and alcohol compounds, the lowest pressure of the mixture capable of generating gas-liquid phase change is lower than the triple point pressure of ammonia. According to the phase change working medium, gas-liquid phase change of the working medium can be directly achieved through temperature adjustment under the ammonia three-phase point pressure, so that the buoyancy of an aerostat is adjusted, a multi-stage supercharging device does not need to be introduced outside the total buoyancy regulation and control system, and the weight and power consumption of the buoyancy regulation and control system are reduced. The problem that ammonia cannot be liquefied through direct cooling due to the fact that the atmospheric pressure is lower than the three-phase point pressure of the ammonia is solved.
本发明提供一种用于浮空器的相变工质、浮空器浮力调控系统和调控方法,所述用于浮空器的相变工质包括:氢氟烃、烯烃、炔烃和醇类化合物中的至少一种化合物与氨形成的混合物,所述混合物可发生气液相变的最低压力低于氨三相点压力。该相变工质能够在氨三相点压力之下直接通过温度调节实现工质的气液相变,从而调节浮空器的浮力,无需在浮力调控系统总额外引入多级增压装置,减小了浮力调控系统的重量和功耗。克服了由于大气压力低于氨三相点压力导致氨无法通过直接降温液化的问题。
Phase change working medium for aerostat, aerostat buoyancy regulation and control system and regulation and control method
用于浮空器的相变工质、浮空器浮力调控系统和调控方法
2022-11-22
Patent
Electronic Resource
Chinese
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