制冷系统中的冷凝器,使用过程中冷却水含有的各种矿物质会使其管壁形成坚硬的水垢,由于水垢的导热系数较小(一般在1.5—2kcal/m.h.°c),致使传热热阻增加,单位面积热负荷qf值减少,冷凝器的传热效 Refrigeration system condenser, the use of cooling water contains a variety of minerals will make the tube wall to form a hard scale, due to the scale of the thermal conductivity is small (usually 1.5-2kcal / mh ° c), resulting in heat transfer Thermal resistance increases, the heat load qf per unit area to reduce the heat transfer efficiency of the condenser