HTFS 使用问题？ 想请问各位 热交换器 设计专家 我在进行一组热交换器设计时遇到 vibration 的问题 其中出现了 5 个 warnings 不知道我要如何解决这个问题 ? 请各位前辈协助 谢谢 1243 The bundle band orientation has 3 pass partition lanes in line with the flow, which may give significant by-passing around the tube regions. Changing the orientation of the bundle would give 1 in-line lane(s) and reduced by-passing. 1244 This is probably a case where the baffle cuts are not consistently located with respect to tube centres. Revising the cuts on the tube layout diagram may be needed. Otherwise, this problem can usually be avoided if you specify bundle layout symmetry case 1 or 2, For H-banded layouts you may also need to adjust the central pp lane width. 1259 A nominal inner baffle cut of 8 percent (from the centre line) has given local cuts of 9.652198 and 9.652198 percent, to match the tube line locations. The effective (mean) cut used in the calculations is 9.652198 percent. 1611 The HTFS flow induced vibration analysis has identified possible or serious problems in one or more areas: Fluid Elastic Instability: 1 warnings, of which 0 serious; Resonance Assessments: 7 warnings, of which 2 serious. 1612 The simple flow induced vibration analysis from TEMA has identified possible or serious problems in one or more areas: Fluid Elastic Instability: 0 warnings, of which 0 serious; Resonance Assessments: 3 warnings, of which 2 serious. 1615 The HTFS and/or TEMA flow induced vibration analysis has identified the possibility of acoustic resonance. You should consider using a deresonating plate, especially if there is resonance of the vortex shedding or turbulent buffeting frequencies with both the acoustic and natural frequencies 查看更多1个回答 . 3人已关注
Cascade 的用法？ 原文：****液位和****中压蒸汽供给流量采用串级系统控制。***中压蒸汽供给流量控制为 副回路 ， 甲醇 汽液分离罐液位控制为 主回路 。 译文：The liquid level of*****and the flowrate of the MP steam supplied for ***controlled by the cascade system . The control of the flowrate of the MP steam is subloop, and the control of the liquid level of ****is main loop. 问题：1.不知串级的用法是否正确 2.副回路与主回路的用法 查看更多4个回答 . 4人已关注
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