直升机余热回收热管理新构型及应用OA

To address the need for improved energy utilization efficiency in advanced helicopters and the inad-equate temperature adaptability of onboard evaporative cycle systems,an Energy Management System(EMS)method based on the coupling of Environmental Control System(ECS)and Lubrication Oil Systems(LOS)is pro-posed.In cold weather conditions(outside air temperature≤-5℃),the onboard evaporative cycle system often fails to heat effectively due to incomplete refrigerant evaporation.In hot weather at high altitudes(outside air tem-perature<20℃),frequent defrosting negatively impacts cabin thermal comfort.Based on the configuration charac-teristics of helicopter ECS,two new Thermal Management System(TMS)architectures were developed:a single-cooling frost-free system and a wide-temperature-range frost-free system.Laboratory tests and AMESIM simula-tion analyses showed that the single-cooling frost-free TMS can achieve frost-free cooling throughout the entire flight altitude envelope of the helicopter,while the wide-temperature-range frost-free TMS can provide frost-free cooling and heating across the entire flight altitude and temperature envelope(outside air temperature≥-40℃).This research allows the ECS to operate independently of engine bleed air,effectively saving engine power,and verifies the feasibility of stepwise utilization technology for waste heat recovery from the LOS,demonstrating sig-nificant engineering application value.