【正文】 ........................................................................3 第 2 章 采暖方案的確定 ..........................................................................................................4 采暖方案的比較 ............................................................................................................4 地板輻射式采暖 ......................................................................................................4 家用中央空調(diào)系統(tǒng) ...................................................................................................5 家用電鍋爐 .............................................................................................................5 電熱膜采暖 .............................................................................................................5 共用立管的布置 ............................................................................................................6 采暖方案的選取 ............................................................................................................6 地板輻射供暖的分類： ..................................................................................................7 第 3 章 采暖負(fù)荷計(jì)算 .............................................................................................................8 供暖設(shè)計(jì)熱負(fù)荷的計(jì)算 ..................................................................................................9 圍護(hù)結(jié)構(gòu)的耗熱量 ...................................................................................................9 冷風(fēng)滲透耗熱量 .......................................................................................................... 10 冷風(fēng)侵入耗熱量 .......................................................................................................... 11 戶間穿熱耗熱量 .......................................................................................................... 11 熱負(fù)荷計(jì)算舉例 .......................................................................................................... 11 第 4 章 地板輻射采暖設(shè)計(jì) .................................................................................................... 13 地面散熱量 ................................................................................................................. 13 地面平均溫度 .............................................................................................................. 15 采暖盤管材料與敷設(shè)形式的選擇 .................................................................................. 16 管間距 ........................................................................................................................ 18 盤管設(shè)計(jì)計(jì)算 .............................................................................................................. 19 第 5 章 水力計(jì)算 .................................................................................................................. 20 水力計(jì)算的目的 .......................................................................................................... 20 II 水力計(jì)算的任務(wù) .......................................................................................................... 20 計(jì)算公式 ..................................................................................................................... 20 水力計(jì)算舉例 .............................................................................................................. 21 立管水力步驟 ........................................................................................................ 21 一單元左系統(tǒng)管道圖 ............................................................................................. 21 最不利環(huán)路水力計(jì) ....................................................................................................... 23 第 6 章 換熱站設(shè)計(jì) ............................................................................................................... 25 換熱站的分類 .............................................................................................................. 26 小區(qū)換熱站站址和規(guī)模的確定 ..................................................................................... 26 換熱站站址的選擇 ................................................................................................. 26 換熱站規(guī)模的確定 ................................................................................................. 27 換熱站供熱系統(tǒng)類型的確定 ......................................................................................... 28 閉式雙管式熱水供熱系統(tǒng) ...................................................................................... 28 開式熱水供熱系統(tǒng) ................................................................................................. 29 該小區(qū)換熱站供熱系統(tǒng)的確定 ............................................................................... 29 換熱器簡(jiǎn)介 ................................................................................................................. 30 換熱 站主體設(shè)備 —換熱器的類型選擇 ..................................................................... 30 換熱量的確定 .............................................................................................................. 32 水泵的選擇計(jì)算 .......................................................................................................... 35 一般原則 ............................................................................................................... 35 循環(huán)水泵的選擇計(jì)算 ............................................................................................. 36 補(bǔ)給水泵的選擇 .................................................................................................... 37 除污器的選型計(jì)算 ....................................................................................................... 38 換熱站內(nèi)部管路管徑的確定 ......................................................................................... 38 第 7 章 管道的保溫和支架 .................................................................................................... 40 保溫的目的 .....