APPLICATION OF TWO-STAGE PRESSURE-BOOSTING CIRCUIT OF AIR CYCLE AIR CONDITIONING IN TRAIN’ S CABIN

Two-stage compression positive pressure-boosting circuit of air cycle air conditioning in train’s cabin is presented.The thermodynamics parameters of every working state are calculated. The problems of key technologies to be solved are discussed. The conclusion is that this new kind of air cycle air conditioning can be applied well not only in train’s cabin, but also in high-speed train’ s cabin. It is friendly environmental and promising .