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近年來我國電力供應出現的一個明顯特點,就是夏季白天的“峰值”負荷與夜晚的“谷期”負荷的峰谷差很大,使電網的負荷率降低。集中空調是重要的用電大戶,也是造成電網峰谷負荷的主要原因,而蓄能空調裝置則是解決這個問題的一個有效辦法。所謂蓄能空調,就是將電網負荷低谷期(如夜晚)的電力用于制冷或者制熱,通過利用蓄能介質將冷(熱)量儲蓄起來,在電網負荷高峰期(如白天),再將冷熱量釋放出來用于建筑物的空調末端,以承擔高峰期空調所需的全部或者部分負荷。通過采用這種蓄能技術能夠實現削峰填谷,是緩解電力建設和新增用電矛盾的有效途徑之一。我國政府部門實行了電力供應峰谷不同的電價政策,隨著各地峰谷電價實施范圍的進一步擴大和峰谷電價比的加大,為蓄能技術的推廣應用提供了更為有利的條件。一方面,隨著峰谷電價比的加大,用戶采用蓄能技術將大大減少其空調的運行費用,降低用電成本,提高企業效益。另一方面,采用蓄能技術能夠移峰填谷,有利于提高電網負荷率,有利于電網的安全經濟運行。

符合下列條件之一時宜采用水蓄能式空調系統:

l 執行峰谷電價,且差價較大的地區

l  建筑負荷高峰和電網高峰時段重合,且在電網低谷時段建筑負荷較小的工程;

l  逐時負荷的峰谷懸殊,使用常規系統會導致裝機容量過大,且大部分時間處于部分負荷下運行的工程;

l  電力容量或電力供應受到限制的空調工程

l 要求部分時段備用制冷量的空調工程;

l  要求提供低溫冷水,或要求采用低溫送風的空調工程;

l  區域性集中供冷、熱的采暖供冷工程。



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