一、主机: 制冷压缩机向着节能、高效、机组化发展。螺杆式压缩机在大、中制冷量的场合日益显现其巨大优越性。目前从国外制冷机制造行业来看,可以认为高速多缸活塞压缩机在30万千卡/小时以下的冷量区间内,仍占有完全的优势。在30～50万千卡/小时冷量区 First, the host: refrigeration compressors toward energy-saving, efficient, development of the unit. Screw compressors in the large and medium-capacity refrigeration occasions increasingly show its great superiority. Currently from the foreign refrigerator manufacturing industry point of view, it can be considered high-speed multi-cylinder piston compressor 300,000 kcal / h in the following cold range, still holds a complete advantage. In 30 to 500,000 kcal / hour cold area