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實用工程知識分享頻道

2 Jul 2019, 18:13

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Post deleted from Telegram 29 May 2020, 03:52

#003 簡單講解何謂AHU 以及點較冷氣
有關尋日各義士入到垃圾會之後發現好熱 然後有義士叫人揾風櫃房AHU ROOM 本人覺得好有需要講解下咩叫AHU

AHU全名叫air handling unit 係指一部好大既冷氣機 佢通常用兩種系統黎制冷 一種係用雪種 一種係用凍水 雪種先唔講 因為多數政府大樓都係用凍水既

通常管理AHU既系統會SET左時間制(timer) 可能係用一個叫bms (building management system) 既系統去較個時間 而多數係non-peak hour 個系統係會提供較少量凍水俾風櫃 咁呢個時候要點做呢? 比較難既係揾到bms系統既電腦 (通常係一部電腦) 將佢入面一個叫chiller同埋cooling tower既野較到最大 呢兩樣野係制造凍水俾全棟樓既機 然後就當然係將全部ahu都較到最大啦😉反正電費都係我地俾既

當然 bms系統既位置比較難揾 咁比較簡單既就係好似尋日既義士咁叫人揾ahu room 通常係一d大房附近都會有一間ahu room 係專門提供冷氣俾果間房既 揾到之後入左去又應該點做呢?

你首先要揾到一部ahu 再望望連接住ahu既兩條或四條水喉(兩條既話唔洗理 四條既話記住揀大D果條! 因為細D果條係熱水喉 開左佢會仲焗) 上面有一個我地叫做control valve既物體 如下圖1 上面有一個我地叫做actuator既野 係可以控制水流既大細同開關 (注: 一般大ahu既actuator係可以較大細 但有部份只提供開關功能 該類ahu會下面再講解點做) 詳細做法如下:

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