摘要
全管束配水方式的特点是对每根工艺管单独配水。在喷淋量为0．5—1．2m。／h，迎面风速为0．5—4．0m／s下通过实验研究了喷淋水量和迎面风速对全管束配水蒸发式冷凝器管外流动阻力的影响，并与常规集中配水方式进行了对比。结果表明：在顺流及逆流状态下，喷淋量为1．2m3／h时，全管束配水蒸发式冷凝器管外空气流动阻力比集中配水蒸发式冷凝器，平均减少11．5％及49．7％。当逆流流动时，全管束配水空气流动阻力突增点的迎面风速为3．5m／s，高于集中配水蒸发式冷凝器。全管束配水蒸发式冷凝器与常规蒸发式冷凝器相比，应用于制冷系统中可节能2％左右。
There are a lot of advantages when water is distributed on every tube respectively. The influences of the spray water flow rate and the air velocity on the air flow resistance of evaporative condenser with water distributed among the whole tube bundle structure were investigated, and conventional spraying water structure was compared with the new structure. The experiment was carried out on the condi- tion that the water flow rate was O. 5 - 1.2 m3/h and the air velocity was 0.5 - 4.0 m/s. The results show that the air flow resistance of this new structure decreases 11.5% at parallel-flow mode and 49.7% at counter-flow mode respectively. In addition, at counter-flow mode, the air flow resistance increases suddenly when the air velocity is 3.5 m/s, which is higher than that of traditional evaporative con- denser. Energy-saving is about 2% , comparing with the conventional spray water structure when used in refrigeration system.
出处
《制冷学报》
CAS
CSCD
北大核心
2014年第2期30-35,共6页
Journal of Refrigeration
关键词
蒸发式冷凝器
配水方式
管外流动阻力
实验研究
evaporative condenser
water distributed type
flow resistance
experimental investigation
