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            暖通空調雜志社>期刊目次>2021年>第9期

            數據中心環狀空調水系統計算分析

            Calculation and analysis of annular air conditioning water systems in data centers

            薛懷坤[1] 李丹[2] 杜永鵬[3]
            百度在線網絡技術(北京)有限公司[1] 北京市建筑設計研究院有限公司[2] 中建三局第三建設工程有限責任公司[3]

            摘要:

            大型數據中心空調設計通常采用水冷冷水系統,需滿足出現單點故障時,不影響制冷系統正常運行??照{水系統多設計為環狀管網、雙立管系統,因此,多環路、雙向供水管網的水力計算分析成為難點。針對某數據中心,介紹了一種可行的計算方法,即管網平差法。利用管網平差法借助Excel中VBA編程,分別對供水管網、回水管網進行水力計算分析。同時,考慮常規計算處理方法即多點故障斷開為支狀管網進行水力計算。通過對比分析可知,利用管網平差法計算的水泵揚程比常規計算方法減小27.6%,有利于設計時水泵的選型。

            關鍵詞:數據中心,單點故障,環狀管網,管網平差法,水力計算,空調水系統

            Abstract:

            The water-cooled chilled water system is usually used in the air conditioning design for large data centers, and it needs to meet the requirement of the normal operation of the refrigeration system in the event of a single point failure. The air conditioning water system is mostly annular pipe network and double riser system, so the hydraulic calculation and analysis of multi-loop and two-way water supply network becomes difficult. Aiming at a data center, presents a feasible calculation method—pipe network adjustment method. By using the method, with the help of VBA programming in Excel, carries out the hydraulic calculation and analysis of water supply network and water return network, respectively. At the same time, the conventional calculation method is considered, that is, the multi-point fault disconnection as a branch pipe network for the hydraulic calculation. Through comparative analysis, finds that the pump head calculated by the pipe network adjustment method is 27.6% less than that by the conventional calculation method, which is beneficial to the selection of the water pump in the design.

            Keywords:datacenter,singlepointfailure,annularpipenetwork,pipenetworkadjustmentmethod,hydrauliccalculation,airconditioningwatersystem

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