A novel fouling measurement system: Part I. design evaluation and description
A novel fouling measurement system: Part I. design evaluation and description
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一种新颖的污垢测量系统：第一部分：设计评估和描述
DOI：
10.1016/j.ijheatmasstransfer.2017.03.026
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发表时间：
2017-07
影响因子：
5.2
通讯作者：
Wang Xinlei
中科院分区：
文献类型：
--
作者：
Shen Chao;Wang Lin;Ford Steven E;Zhang Cancan;Wang Xinlei
由于强化管具有优良的传热性能，在冷水机组冷凝器中得到了广泛的应用。这些热交换器的预测性能和实际性能都受到传热表面积垢的影响。因此，为了解决换热管结垢阻力与运行条件之间的关系，需要对结垢热阻进行准确的量化。新开发的污垢测量系统（FMS）通过测量传热表面的污垢热阻来支持污垢发展与运行条件之间关系的研究。这个由两部分组成的系列文章的第1部分描述了FMS的设计和评估。对污垢热阻进行了不确定度分析，以确定测量元件对最终结果不确定度的贡献，指导元件的选择。第二部分进行了FMS调试，并进行了一次污垢试验和冷却水水质分析。FMS由三个子系统组成：热泵子系统、冷却/冷冻水子系统和控制与数据采集（DAQ）子系统。FMS有三个热泵分别安装了一个壳管式冷凝器，并分别配备了一个冷却/冷冻水供应回路。在冷却/冷冻水分系统中，三台热泵共用同一个冷却水池和冷冻水池，保证了各热泵供冷/冷冻水的均匀性。在伊利诺伊大学厄巴纳-香槟分校的空气质量实验室外安装了一个冷却水塔，用于冷却FMS的冷却水，并使水蒸发，使冷却水保持在要求的范围内。在控制和数据采集子系统中，描述了水温、水质、流速和制冷剂饱和温度的控制。
The enhanced tube is being used more often in water-chiller condensers because of their superior performance in heat transfer. Both the predicted and real-world performance of these heat exchangers is affected by the fouling build-up on the heat transfer surfaces. Thus, accurate quantification of fouling thermal resistance is required to address the correlation between the fouling resistance of heat transfer tubes and operation conditions. A newly developed Fouling Measurement System (FMS) supports research on the relationships between fouling development and operation condition by measuring fouling thermal resistance on the heat transfer surface. Part I of this two-part series describes the design and evaluation of FMS. An uncertainty analysis of fouling thermal resistance was conducted to identify measurement component contributions to the uncertainty of final results and guide component selection. In Part II, FMS commissioning was performed, and a primary fouling test and analysis on cooling water quality were conducted. The FMS consists of three subsystems: heat pump subsystem, cooling/chilled water subsystem and control and data acquisition (DAQ) subsystem. The FMS has three heat pumps individually installed with a shell-and-tube condenser and separately equipped with a cooling/chilled water supply loop. In the cooling/chilled water subsystem, these three heat pumps share the same cooling water pool and chilled water pool, which ensures that the cooling/chilled water supplied to each heat pump is uniform. A cooling water tower was installed outside the Air Quality Lab in University of Illinois at Urbana-Champaign to cool down the cooling water of the FMS, and to evaporate water and keep the cooling water at the required range. In the control and DAQ subsystem, the control of water temperature, water quality, water velocity, and refrigerant saturation temperature are described.
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影响因子：
5.2
作者：
Kim Nae-Hyun;R. Webb
通讯作者：
Kim Nae-Hyun;R. Webb
影响因子：
--
作者：
L. Cremaschi;J. Spitler;Ellisa Lim;A. Ramesh
通讯作者：
L. Cremaschi;J. Spitler;Ellisa Lim;A. Ramesh
影响因子：
2.3
作者：
A. Watkinson
通讯作者：
A. Watkinson
影响因子：
2.3
作者：
L. Chamra;R. Webb
通讯作者：
L. Chamra;R. Webb
影响因子：
2.1
作者：
R. Morse;J. Knudsen
通讯作者：
R. Morse;J. Knudsen