The paper analyzed the main electric equipment of HVAC (Heating, Ventilation and Air Conditioning) apparatus and introduced structural principle of the auxiliary power system for EMUs.
分析了动车组空调装置的主要用电设备，并对辅助供电系统的结构原理进行了介绍。
2
Double-layer heat insulation inner inner liner without tortoiseshell net, inner liner of high temperature hot air pipeline, inner liner of heating furnace and so on in catalyst creaking apparatus.
催化裂化装置中两器有龟甲网双层衬里或无龟甲网双层衬里隔热内衬。
3
Heat is generated via an air-water-heating pump whereby the blast apparatus, which causes a noise, is placed outside together with the heat exchanger.