短管圆环式水汽凝结器设计与应用研究  

Application Study and Design on Circular Vapor-condenser with Short Tubes

作　　者：王曙光[1] 徐言生[2] 

机构地区：[1]安阳工学院,安阳455000 [2]顺德职业技术学院,佛山528300

出　　处：《食品工业》2008年第2期72-74,共3页The Food Industry

摘　　要：为提高水汽凝结器性能,开发了一种短管圆环式水汽凝结器,并应用在SZDG-75冻干设备中。经小葱冻干试验结果表明,相对现有的蛇形盘管式而言,凝结器的凝结管外水蒸汽流动阻力减小6 Pa;管内制冷剂回汽温度提高1.5℃;管表面最大霜层厚度减小4 mm。基于上述情况,短管圆环式水汽凝结器的制冷系统蒸发温度可以提高3.3℃,使制冷系统的制冷量提高18%,能效比提高12%。In order to improve performance of vapor-condenser, a circular vapor-condenser with short tubes was developed and applied at SZDG-75 freeze-drying equipment. Compared with existing coil, it has following advantages that vapor flow resistance is 6 Pa less, return refrigerant temperature is 1 .5℃; higher, frost over pipes is more equally thick. With these reasons, the evaporation temperature of refrigeration system can be 3.3℃ higher, which makes cooling capacity raises 18%, as well as COP raises 12%.

关 键 词：冻干设备 水汽凝结器 设计 制冷系统 节能 

分 类 号：TS203[轻工技术与工程—食品科学] TB657[轻工技术与工程—食品科学与工程]