机舱热发散控制用通风参数影响的模拟分析

发布时间：2018-01-13 09:16

本文关键词：机舱热发散控制用通风参数影响的模拟分析　出处：《舰船科学技术》2016年09期 　论文类型：期刊论文

【摘要】：针对船舶机舱发电机组、锅炉等高负荷热源,研究采用空气射流通风技术进行热发散控制。结合机舱的现场条件,建立机舱热发散控制的物理模型,选用计算流体力学的标准k-ε模型作为数值模拟计算模型。采用正交试验法对稳态条件下的送风速度、喷嘴高度、送风温度、送风湿度、排风速度等因素进行了模拟试验分析。试验得出不同通风因素对热发散控制效果影响的显著性大小排序:送风温度、送风速度、喷嘴高度、排风速度。结合试验分析结果提出了热发散通风控制的优方案和考虑节能后再优化调整方案。
[Abstract]:Aiming at the high load heat sources such as marine engine room generator and boiler, this paper studies the heat divergence control by air jet ventilation technology, and establishes the physical model of engine room heat divergence control according to the field conditions of engine room. The standard K- 蔚 model of computational fluid dynamics is chosen as the numerical simulation model. The velocity of air supply, the height of nozzle, the temperature of supply air and the humidity of supply air under steady condition are studied by orthogonal test method. The influence of different ventilation factors on the control effect of thermal divergence was analyzed by simulation test. The order of significance of different ventilation factors on the control effect of thermal divergence was obtained: air supply temperature, air velocity and nozzle height. Combined with the results of experimental analysis, the optimal scheme of heat divergence ventilation control and the scheme of optimization adjustment after considering energy saving are put forward.
【作者单位】：东华大学环境学院;中国船舶重工集团公司第七0一研究所;
【分类号】：U664.86
【正文快照】： 机舱是船舶的重要组成结构[1],在空间紧凑的机舱中有锅炉、发电机组、空气压缩机等热散发设备,及排气管系、动力管系等热散发辅助设备。热散发造成环境温度升高影响到空气压缩机、冷水机组等设备正常运转[2]。机舱中油液挥发到环境空气中,当聚集到一定浓度还存在爆燃隐患。因

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