【正文】 ....... 8 （二）氣候及地質(zhì)特征 ............................................................................................................................................ 9 氣象資料 ............................................................................................................................................................. 9 其它資料 ........................................................................................................................................................... 10 （三）供熱現(xiàn)況 ..................................................................................................................................................... 10 四、項(xiàng)目建設(shè)的必要性 .......................................................................................................................................... 11 五、工程概況 ......................................................................................................................................................... 13 （一）工程建設(shè)內(nèi)容 .............................................................................................................................................. 13 （二）供熱范圍 ..................................................................................................................................................... 13 （三）供熱首站 ..................................................................................................................................................... 13 （四）一次管網(wǎng) ..................................................................................................................................................... 14 （五）熱力站 ......................................................................................................................................................... 14 第二章 供熱規(guī)劃及熱源選擇 .................... 14 一、供熱面積 ......................................................................................................................................................... 14 二、熱源 ................................................................................................................................................................. 15 三、 二期 供熱規(guī)劃 ................................................................................................................................................. 16 第三章 熱負(fù)荷及供熱溫度的確定 ................. 16 一，供熱范圍 ......................................................................................................................................................... 16 二、供熱負(fù)荷 ......................................................................................................................................................... 16 三、熱指標(biāo) ............................................................................................................................................................. 17 四、采暖熱負(fù)荷： ................................................................................................................................................. 20 五、供回水溫度的確定 .......................................................................................................................................... 20 第四章 首站 熱力站及一次管網(wǎng) ................ 22 iii 一，首站設(shè)置 ......................................................................................................................................................... 22 （ 一）熱力系統(tǒng)流程說明 ...................................................................................................................................... 22 （二）設(shè)計(jì)參數(shù) ..................................................................................................................................................... 22 （三）新增主要設(shè)備 .............................................................................................................................................. 22 二、熱力站 ............................................................................................................................................................. 23 （一）設(shè)置原則 ..................................................................................................................................................... 23 （二）熱力站設(shè)置 ................................................................................................................................................. 23 （三）熱力站的連接方式及設(shè)備 .......................................................................................................................... 24 三、一次管網(wǎng) ......................................................................................................................................................... 25 （一）布置原則 ..................................................................................................................................................... 25 （二）一次管網(wǎng)走向 .............................................................................................................................................. 25 （三）敷設(shè)方式 ..................................................................................................................................................... 25 （四）補(bǔ)償方式 ..................................................................................................................................................... 26 （五）一次管網(wǎng)的保溫及防腐 .............................................................................................................................. 26 （六）閥門設(shè)置 ..................................................................................................................................................... 26 四、一次管網(wǎng)水力計(jì)算 .......................................................................................................................................... 26 （一）水力計(jì)算的條件和原則 .............................................................................................................................. 26