不同假设条件下闭式冷却塔数学建模与实验验证  

Numerical Model and Experimental Verification of Closed Cooling Tower based on Different Assumptions

作　　者：丁枭 周亚素[1,2] 黄凯[1,2] 梁霄峰 

机构地区：[1]东华大学环境科学与工程学院 [2]国家环境保护纺织污染防治工程技术中心 [3]莫特麦克唐纳咨询(北京)有限公司上海分公司

出　　处：《建筑热能通风空调》2016年第3期9-13,共5页Building Energy & Environment

摘　　要：针对闭式冷却塔传热传质机理的不同假设,分别构建了两种数学模型,通过Matlab模拟计算,分析两种数学模型模拟结果的准确性并进行实验验证。结果表明:基于Merkel法和Poppe法建立的两种模型,模拟闭式冷却塔冷却水出口温度、喷淋水温度以及空气出口焓值时,两者最大误差为1.8%,与实验结果比较,最大误差为6%,在工程允许范围内,因此,对闭式冷却塔内部传热传质作进一步简化的Merkel法可替代Poppe法,用于实际工程计算。On the basis of different assumptions on the heat and mass transfer of closed cooling tower, two mathematical models were presented. Related experiments were carried out to validate the computing values which were computed by Matlab. The results showed that the maximum derivation of cooling water outlet temperature, deluge-water temperature and air outlet enthalpy forecasted by Poppe method and Merkel method is up to 1.8 %. Compared with the experimental values, it can be seen that the maximum error is 6%, which is permitted in engineering practice. Thus the model presented by Merkel method can replace the model presented by Poppe method in the simplified engineering calculation of closed cooling tower.

关 键 词：闭式冷却塔 传热传质 数学模型 实验验证 

分 类 号：TU991.42[建筑科学—市政工程]