<th id="c4njz"></th>
          <span id="c4njz"></span>
        1. <span id="c4njz"></span>

          <dd id="c4njz"></dd>
          1. 我的訂單 | 我的收藏 | 加入收藏 | 返回首頁
            暖通空調雜志社>期刊目次>2021年>第5期

            空調風系統管網風量平衡仿真調試(一):局部構件相鄰連接影響修正

            Simulation-based method for HVAC air-side system balancing (1): Correction for close-coupled

            王秋澗[1] 潘毅群[2] 黃治鐘[2]
            [1]上海市建筑科學研究院有限公司 [2]同濟大學

            摘要:

            針對傳統風系統測試、調節與平衡(TAB)方法因流程煩瑣而完成質量較差的問題,提出:事先對空調風系統建模,在仿真平臺上進行風量平衡,并用仿真調平的結果指導之后的現場調試,從而加快現場調適進程,提高完成質量。針對現有風系統管網阻力構件模型往往不考慮相鄰連接影響而導致的局部阻力系數誤差較大的問題,主要借助CFD數值模擬,著重研究了三通、風閥和彎管3種局部阻力構件在5種常見兩兩串聯關系下的局部阻力系數變化,并建立了構件相鄰連接影響修正模型。修正前后的對比結果顯示,所提出的修正方法可以很好地反映相鄰連接對局部阻力系數的顯著影響。

            關鍵詞:局部阻力系數,風系統,管網風量平衡,管網構件阻力模型,構件相鄰連接影響,調適

            Abstract:

             Due to the tedious measurements and unsatisfactory quality of the conventional testing, adjusting and balancing (TAB) process for HVAC air-side systems, presents performing the balancing procedure on the system models prior to the on-site TAB, so that the on-site work could be guided and improved. First, mainly focuses on the resistance models of the duct fittings. Most of the existing models do not account for the close-coupled effect when the fittings are closely connected. Adopts CFD simulation method to calculate the coefficient of local resistance of junctions, dampers and bends under five different connection arrangements. Proposes a new correction method for the close-coupled effect. Regresses the correction models based on the CFD results. The results show that the models could compensate the significant influences of the close-coupled effect on the fittings’ coefficient of local resistance.

            Keywords:coefficientoflocalresistance,air-sidesystem,ductnetworkbalancing,networkfittingresistancemodel,close-coupledeffect,commissioning

                你還沒注冊?或者沒有登錄?這篇期刊要求至少是本站的注冊會員才能閱讀!

                如果你還沒注冊,請趕緊點此注冊吧!

                如果你已經注冊但還沒登錄,請趕緊點此登錄吧!

            最新综合精品亚洲网址
                <th id="c4njz"></th>
                  <span id="c4njz"></span>
                1. <span id="c4njz"></span>

                  <dd id="c4njz"></dd>