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            暖通空調雜志社>期刊目次>2021年>第9期

            廈門新機場分布式區域供冷輸配二級泵系統定壓差方案比選

            Constant pressure difference schemes for distributed district cooling transmission secondary pump system of Xiamen New Airport

            曹榮光 潘云鋼 徐穩龍 韋航
            中國建筑設計研究院有限公司

            摘要:

            基于管網動力學數學模型,定量分析了廈門新機場分布式區域供冷輸配二級泵系統在輸送管網始端(主管線第一個用戶分支處)定壓差和末端(最不利用戶處)定壓差2種不同控制方案下管網泵和用戶泵的全年運行工況和總能耗。結果表明,相比末端定壓差方案,始端定壓差方案的循環泵電動機容量低11.1%,年運行電耗低15.6%,管網泵和用戶泵的全年運行效率更高。該工程始端定壓差方案具有投資少、運行費低及運行控制相對簡單可靠的優點,建議采用。

            關鍵詞:區域供冷,二級泵系統,定壓差控制,水泵效率,始端定壓差,末端定壓差

            Abstract:

            Based on the dynamic mathematical model of pipe network, under the control schemes of constant pressure difference at beginning (the first user branch of the main line) and constant pressure difference at end (the most unfavorable hydraulic user location), quantitatively analyses the annual operating conditions and total energy consumption of the pipeline pumps and user pumps of the distributed district cooling transmission secondary pump system of Xiamen New Airport. The results show that, compared with the scheme of constant pressure difference at end, the circulating pump motor capacity of the scheme of constant pressure difference at beginning is lower by 11.1%, the annual operating power consumption is lower by 15.6%, and the annual operating efficiency of pipeline pumps and user pumps is higher. For the project, the scheme of constant pressure difference at beginning is recommended for its advantages of small investment, low operating cost, and relatively simple and reliable operation control.

            Keywords:districtcooling,secondarypumpsystem,constantpressuredifferencecontrol,pumpefficiency,constantpressuredifferenceatbeginning,constantpressuredifferenceatend

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