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簡報 2009 10 31 德貴學苑建築的節能減碳作法
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簡報 2009 10 31 德貴學苑建築的節能減碳作法
1.
法鼓德貴學苑 建築的節能減碳作法 主講/劉宇傑先生
1
2.
以更新取代拆除重建
2
3.
德貴大樓原貌 興建於1975年,屋齡已超過32年的老舊辦公大樓。
3
4.
建築物生命週期的耗能 一棟建築物營建階段的耗能 佔建築物一生耗能的10~25% 一般RC結構體的預估壽命是50年
4
5.
如果可以將建築物更新再利用 充份利用RC結構的壽命 就能減少拆除及新建所消耗的能源
5
6.
所以我們選擇不拆除重建 而是將舊有結構體補強、更新設備及裝修
6
7.
在二樓的結構框架中我們增設了「制震阻尼斜撐」
提昇舊結構體抵抗地震的能力 7
8.
讓重獲新生的老建築物在未來的生命裡安全無虞
8
9.
被動式節能設計
9
10.
「被動式設計」是一種綠建築的設計觀念
10
11.
建築物因為受到日照加熱及熱空氣進入 會使得室內氣溫上升 當氣溫上升到超過人們能接受的舒適範圍 人們就會打開冷氣 用「主動」的方式來冷卻室內空間
11
12.
反之 如果日照不足,或是外部環境太冷 人們就會打開暖氣 用「主動」的方式來加熱室內空間
12
13.
「主動」指的是人們運用機械並消耗能源 來改變物理環境的方式 除了冷氣、暖氣之外 我們也會開除濕機、開風扇、開電燈 來改變室內的溫度、濕度、照度、空氣品質 這些都會消耗能源
13
14.
如果我們可以巧妙地設計 運用適當的材料 甚至利用太陽、風、地形、植物 以減少「主動」改變室內物理環境所需的能源 這就是所謂的「被動式設計」
14
15.
德貴大樓正面朝向西方 雖然開窗量不大 但仍有嚴重的西曬問題
15
16.
西曬也會把25cm厚的RC牆加熱 蓄積的熱量會緩慢地釋放 使得夏季傍晚到晚上的室內更加炎熱
16
17.
我們從 外牆隔熱、遮陽、通風 來改善這個問題
17
18.
一般15cm厚的RC外牆熱傳透率 U 值是
3.49 W/m2K U 值愈低,表示隔熱性愈好 室內愈不容易受到室外氣溫的影響 德貴大樓原有外牆的U值大約是 3.11 W/m2K 18
19.
德貴學苑在原有RC牆外加了一層鋁板 除了美觀之外 也將 U 值減低到
0.97 W/m2K 19
20.
鋁板也增加了開窗部位的遮陽深度 減少陽光直射入室內的量
20
21.
鋁板也增加了開窗部位的遮陽深度 減少陽光直射入室內的量
22.
在有限的開口尺寸下 我們選擇有效通風率最大的開窗形式 來利用通風調節室溫
22
23.
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24.
屋頂隔熱也是日常節能的重要關鍵 一般採用隔熱磚的RC樓板熱傳透率 U 值是
0.99 W/m2K 同樣的,U 值愈低愈好 24
25.
德貴學苑在屋頂覆土20~30cm綠化 屋頂 U 值可以降到
0.66 W/m2K 以下 25
26.
德貴學苑有許多間教室及中小型辦公室 如果隔間起來 走廊及公共區域會變得很暗 所以我們採用玻璃隔間 讓窗外的光能透到走廊 減少平常需要開燈照明的時間
26
27.
能源的有效使用
27
28.
過去十年來 冷氣設備的效率提昇了100% 老舊設備成為耗能的一大元凶
28
29.
德貴學苑汰除了所有老舊的空調機組 換裝最節能的空調系統
29
30.
德貴學苑各樓層也都採用了全熱交換器 在提供新鮮空氣的同時 也減少空調負荷的增加
30
31.
因應實際需要適當地操作冷氣 能夠節省大量的電力 德貴學苑採用集中控制器 並連結中央監控系統 能夠有效減少冷氣的不當操作
31
32.
照明耗能佔一般建築耗能的20~30% 採用高效率的光源和高效率的燈具 已經成為國民運動 德貴學苑同樣不落人後
32
33.
省水器具也是德貴的標準配置 此外 便器也都採用奈米抗污型 以及較小、較圓滑的造型 以節省清潔用水
33
34.
34 德貴學苑裝置了數位電錶、數位水錶 能記錄各樓層的用水、用電量 藉以檢討能資源是否有不正常的浪費 並提昇大家對於能資源消耗的 “awareness”
35.
再生能源
35
36.
再生能源 指的是像太陽、風、地熱、潮汐等等 地球可以源源不絕地提供 而不會像石油或天然氣一樣被消耗掉的能源
36
37.
使用再生能源 也能減少由化石燃料取得能源所排放的CO2
37
38.
雖然目前的太陽能光電技術尚在持續發展 在經濟性、能源回收年限都還有進步空間 也許還沒有到適合大規模應用的時機 德貴學苑仍然設置了一組試驗性質的 太陽能發電板 總計5kW的太陽能光電模組 採市電併聯方式 提供大樓一部份的用電
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39.
健康環境
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40.
室內裝修儘量採用系統家具的作法 以減少空氣中的有機揮發物 室內大量地種植可以淨化空氣的植物 以吸附二氧化碳、VOCs、灰塵
40
41.
謝謝您的聆聽 接下來是Q&A時間 以及屋頂花園的導覽
41
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