【正文】 on and thermal station of a standard business center which is located in Zhengzhou city. The main content includes: the load putation, the design and calculation of the air treatment process and the air flow, the selection of the equipments, the friction calculation of the wind and aqueous system and the determination of the systematic control strategies, etc. Combined with the specific characteristics of the architecture in the process of the design, the rational operation scheme should be formulated to make the system possess better functionality and operability in accordance with practical situation. The airconditioning system is divided into two kinds: one is the system of primary air return, and the other is the system of the fancoil unit with independent fresh air that the outdoor wind is treated to reach the indoor enthalpy, but not to bear the indoor load. In the refrigeration and thermal station, I adopt the screw water chiller to refrigerate in summer as well as the urban pipeline to transfer heat in winter through the plate heat exchanger. The generator room is fixed up in the basement, while the chilling tower is installed on the top of the podium of the building. As for the aqueous system, the closed, synchro, twopipe and variant flow one is chosen. Keywords: Airconditioning system Air treatment process The fancoil unit with independent fresh air Plate heat exchanger III 目錄 引言 ................................................................. 1 1. 工程概況及原始資料 ............................................... 2 工程概況 .................................................... 2 氣象參數 .................................................... 2 室外計算參數 .......................................... 2 室內設計參數 .......................................... 3 建筑材料簡介 ................................................ 4 2. 負荷計算 ......................................................... 5 室內冷負荷計算 .............................................. 5 墻體和屋面?zhèn)鳠岬脽嵋鸬睦湄摵?........................ 5 玻璃窗傳熱得熱引起的冷負荷 ............................ 5 玻璃窗日射得熱引起的冷負荷 ............................ 5 內維護結構形成的冷負荷 ................................ 6 照明散熱引起的冷負荷 .................................. 6 人體散熱引起的冷負荷 .................................. 7 設備散熱引起的冷負荷 .................................. 7 室外新風引起的冷負荷 .................................. 8 室內熱負荷計算 ............................................. 13 通過圍護結構的溫差傳熱量形成的熱負荷 ................. 13 附加耗熱量形成的熱負荷 ............................... 13 外門開啟沖入冷風耗熱量形成的熱負荷 ................... 13 新風熱負荷 ........................................... 14 3. 空調方案的確定 .................................................. 17 空調系統(tǒng)的 分類 ............................................. 17 按負擔室內負荷所用介質種類分類 ....................... 17 按空氣處理設備的設置情況分類 ......................... 18 空調方案的比較 ............................................. 18 各種空調系統(tǒng)使用條件和使用特點 ....................... 18 常用空調系統(tǒng)比較 ..................................... 19 IV 空調系統(tǒng)使用指標概括比較 ............................. 21 空調方案的確定 ............................................. 21 4. 風量計算 ........................................................ 24 送風量的確定 ............................................... 24 新風量的確定 ............................................... 24 滿足衛(wèi)生要求 ......................................... 24 補充局部排風量 ....................................... 25 保證空調房間的正壓要求 ............................... 25 5. 空氣調節(jié)設備的選擇 .............................................. 26 空氣處理機組的選擇 ......................................... 26 空調機組選型方法 ..................................... 26 空調機組選型結果 ..................................... 26 風機盤管機組的選擇 ......................................... 27 風機盤管 機組選型結果 ................................. 27 6. 空調系統(tǒng)的設計計算 .............................................. 29 風系統(tǒng)的阻力計算 ........................................... 29 風管設計的基本任務 ................................... 29 風管的選擇 ........................................... 29 風管內風速的選擇 ..................................... 29 氣流組織和送風形式 ................................... 30 計算方法 ............................................. 31 計算結果 ............................................. 31 水系統(tǒng)的阻力計算 ........................................... 33 水系統(tǒng)形式的分類 ..................................... 33 水系統(tǒng)形式的確定 ..................................... 34 計算方法 ............................................. 34 冷凍水系統(tǒng)設計計算 ................................... 35 冷卻水系統(tǒng)設計計算 ................................... 40 冷凝水系統(tǒng)管路設計 ................................... 40 7. 冷凍熱力站 設計 .................................................. 42 水冷式冷水機組的選擇 ....................................... 42 V 制冷機組選擇依據 ..................................... 42 制冷機組選型方案 ..................................... 44 板式換熱機組的選擇 ......................................... 45 冷卻塔的選擇 ............................................... 45 定壓裝置的選擇 ............................................. 46 集水器、分水器的選擇 ....................................... 47 軟水器的選擇 ............................................... 47 軟化水箱的選擇 ............................................. 48 除污器的選擇 ............................................... 48 泵的選擇 ................................................... 48 冷凍水泵選型 ......................................... 49 冷卻水泵 選型 ......................................... 49 水泵的配管 ........................................... 50 8. 空調系統(tǒng)管道保溫以及系統(tǒng)的消聲與減震 ............................ 51 空調系統(tǒng)管道的保溫 ......................................... 51 空調系統(tǒng)的噪聲控制 ......................................... 51 空調系統(tǒng)的減震控制 ......................................... 52 結論 ................................................................ 54 致謝 .....