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      暖通空調>期刊目次>2023年>第7期

      地下車站冷水機組部分負荷性能系數研究

      Study on part load value of water chillers in underground stations

      劉伊江
      中鐵二院工程集團有限責任公司

      摘要:

      部分負荷性能系數的概念綜合考慮了氣象因素、實際負荷及運行條件,便于在更貼近實際使用條件下對機組進行比較、評價,有助于促進機組實際運行性能水平的提高,目前已被空調行業廣泛采用。國標定義的部分負荷性能系數具有廣譜性,力求覆蓋全國各氣候區及各種建筑類型。地鐵車站應用場景下,空調負荷有其固有的特點,不宜直接采用國標定義的部分負荷性能系數定義工況點及計算方法。本文選取我國不同氣候區域的代表城市,在深入研究地下車站空調負荷特點的基礎上,提出適應于地下車站應用場景的部分負荷性能系數定義工況點及相應的計算方法。

      關鍵詞:綜合部分負荷性能系數(IPLV);非標準部分負荷性能系數(NPLV);冷水機組;地鐵;負荷率;冷凝器入口水溫(ECWT)

      Abstract:

       The part load value (PLV) comprehensively considers meteorological factors, actual load, and operating conditions. This makes it convenient to compare and evaluate the units under actual conditions of use, helps to promote the actual operating performance level of the units and has been widely adopted by the air conditioning industry. The PLV defined by the national standard has a broad spectrum and aims to cover all climate zones and various building types in the country. In the application scenario of the subway station, the air conditioning load has its inherent characteristics. Therefore, it is not suitable to use the PLV points and calculation method defined and recommended by the national standard directly. This paper selects the representative cities of different climate regions in China, on the basis of an in-depth study of the characteristics of air conditioning load in underground stations, and proposes the definition of the PLV as well as corresponding calculation method for the application scenario of underground stations.

      Keywords:integratedpartloadvalue(IPLV);non-standardpartloadvalue(NPLV);waterchiller;undergroundrailway;loadratio;enteringcondenserwatertemperature(ECWT)

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