Some aspects of vertical twin screw compressor are compared with horizontal twin screw compressor : the axial bearing load of the vertical twin screw compressor is 57 % lower than horizontal twin screw compressor ; it also can increase 5 % capacity but it only occupied the 30 % area of horizontal twin screw compressor ; and it has more efficient oil separator as its special figure 并对立式螺杆制冷压缩机与卧式螺杆制冷压缩机进行了分析比较：立式螺杆压缩机的轴向力比卧式压缩机的轴向力减少57 % ；立式螺杆压缩机的容积效率要比卧式压缩机的容积效率高5 % ；由于油分的特殊环形设计，所以立式压缩机的油分效果要比卧式压缩机的油分效果好；而立式压缩机占地面积为卧式压缩机的1 / 3 。
