涩老板在线免费视频_午夜成人精品_神马理论午夜,,_亚洲有薄码区久久欧美精品一区_97人人色_神马在线精品_成人熟女一区二区_亚洲二区三区四区_人妻午夜免费_大鸡巴猛男爆操骚逼国产一区二区_丁香婷婷久久一区二区三区_岛国内射美女_亚洲一级电影,亚洲欧美日韩国产最新版,亚洲五月综合缴情综合久久本,少妇色情喷水又紧又爽小说,巜上司的少妇的滋味,国产精品三级女人国产香蕉,亚洲最好的免费电影,欧美亚洲国产成人精品,国产永久一区二区三区,亚洲综合一区无码精品,歳の熟女セックス,内射带小孩熟妇,果冻传媒在线看免费视频观看,成人欧美一区二区三区片,亚洲 片内射欧美美妇,一本无码人妻在中文字幕免费,亚洲无毛视频,中文字幕丰满孑伦无码专区,亚洲爆乳无码专区色戒纶理,肉乳床欢无码片动漫软件,欧美日韩一区二区另类,久热只有精品在线直播,精品亚洲一区二区在线播放,精品国产乱码久久久久久影片,国产一级高清在线观看,国产精品福利在线一区,成人动漫下载,乱伦性爱视频,xo无码AV毛,国产黄A片免费网站免费,日韩欧美一级特黄特色大片

Design resistance balance of ventilation duct

一、在通風系統中的通風管道是相互連接的一個整體，必然得遵循各支路阻力平衡規律，當風管系統的結構形式、管道尺寸一經確定，在一定的風機作用下，各段的風量是按阻力平衡規律自動分配的。在設計計算時未經阻力平衡計算，會導致系統實際風量分配與設計不符。當然我們也可以通過調節風閥來分配風量，但這樣一來就又使非不利環路的風壓多余。所以在設計計算時考慮各環路的阻力平衡具有現實意義。

1、 The ventilation duct in the ventilation system is an interconnected whole, which must follow the resistance balance law of each branch. Once the structural form and pipe size of the air duct system are determined, under the action of a certain fan, the air volume of each section is automatically distributed according to the resistance balance law. If the resistance balance calculation is not carried out in the design calculation, the actual air volume distribution of the system will be inconsistent with the design. Of course, we can also adjust the air valve to distribute the air volume, but in this way, the air pressure of the non adverse loop is redundant. Therefore, it is of practical significance to consider the resistance balance of each loop in the design and calculation.

然而，不少設計人員在進行風道水力計算及阻力平衡過程中僅僅憑經驗估算或查圖手算，這樣費時費力還達不到理想效果。筆者所設計的計算軟件以excel為工作平臺，用vba語言為開發工具，從而確保了程序的執行效率。

However, in the process of hydraulic calculation and resistance balance of air duct, many designers only rely on empirical estimation or manual calculation by looking up drawings, which is time-consuming and laborious and can not achieve the ideal effect. The calculation software designed by the author takes excel as the working platform and VBA as the development tool, so as to ensure the execution efficiency of the program.

二、阻力自動平衡計算的基本步驟

2、 Basic steps of resistance automatic balance calculation

風道系統阻力平衡自動計算的執行過程基本延用常規設計的計算步驟，主要如下：

The execution process of automatic calculation of resistance balance of air duct system basically follows the calculation steps of conventional design, mainly as follows:

①將各節點間的邏輯關系、管段的相關參數依次輸入并保存，然后根據技術要求初步選定各管段的假定風速;

① Input and save the logical relationship between nodes and relevant parameters of pipe sections in turn, and then preliminarily select the assumed wind speed of each pipe section according to the technical requirements;

②根據假定風速自動計算管段當量水力直徑及阻力損失;

② Automatically calculate the equivalent hydraulic diameter and resistance loss of the pipe section according to the assumed wind speed;

③用節點逆尋法自動查找系統各環路的路徑及阻力損失，并確定系統不利環路;

③ The node reverse search method is used to automatically find the path and resistance loss of each loop of the system, and determine the unfavorable loop of the system;

④對非不利環路進行自動阻力平衡。

④ Automatic resistance balancing for non adverse loops.

⑤對計算結果進行校核。

⑤ Check the calculation results.

以上過程中只有工作量不大①、⑤需人工干預，而其他步驟全部由計算機自動完成。從而不但確保其計算速度及準確性，而且還可根據需要進行適當的手工調整。

In the above process, only the workload is small, ① and ⑤ need manual intervention, while other steps are completed automatically by the computer. Thus, it can not only ensure the calculation speed and accuracy, but also make appropriate manual adjustment according to the needs.

以上就是為大家介紹的有關濟南通風管道的詳細介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯系我們.我們將以的態度,為您提供服務http://www.okok0579.com

The above is the detailed introduction of Jinan ventilation duct. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.okok0579.com