【正文】
的逐時冷負(fù)荷, w; K —— 圍護(hù)結(jié)構(gòu)傳熱系數(shù), w/(㎡178。 墻體和屋面?zhèn)鳠岬脽嵋鸬睦湄?fù)荷 Q=F178。 ? 屋頂:材料為瀝青膨脹珍珠巖,厚度為 160mm,傳熱系數(shù)為 K=(w/㎡ .℃ ),傳熱衰減為β =,傳熱延遲為 ; ? 外窗:玻璃鋼窗, 12mm 輻射率≤ 中空玻璃(在線),間隔層充空氣, K=(w/㎡ .℃ ),內(nèi)掛淺色布窗簾,布料為滌棉平紋布,無外遮陽, F= ㎡; ? 外墻:材料為加氣混凝土,厚度為 240mm,傳熱系數(shù)為 K=(W/(㎡*℃)),傳熱衰減為β =,傳熱延遲為 8h, F= ㎡,窗墻比為 ; ? 內(nèi)墻:內(nèi)墻為 120mm 磚墻,內(nèi)外粉刷; ? 房間類型屬于中型; ? 室內(nèi)壓力稍高于室外大氣壓力。 鄭州譽(yù)杰商務(wù)綜合樓的建筑概況:共有十五層,其中地下一層,地上十四層;地下一層包括車庫、配電室和冷凍站等 ; 一至四層為產(chǎn)品展覽廳﹑會議室以及辦公室等;五到十三層主要為辦公場所;十四層為健美訓(xùn)練廳﹑更衣室以及棋牌室等;總建筑面積 12330 ㎡,空調(diào)房間面積 ㎡,一層層高 ,二至十四層層高 米,總高度 米,地下室高 米。然而這畢竟是我們第一次身體力行,故而難免在具體操作過程中存在著諸多問題和不足之處,望各位老師給予批評、指正,從而讓我進(jìn)一步提高和完善。其 中 , 辦公用房和商業(yè)用房規(guī)模的上升,必將導(dǎo)致中央空調(diào)產(chǎn)品需求總量的高速增長。由此可見,隨著我國國民經(jīng)濟(jì)不斷增長,人民生活水平不斷提高,住宅建筑不斷發(fā)展,中央空調(diào)將作為一種新潮流很快會成為空調(diào)行業(yè)發(fā)展的新熱點(diǎn)。制冷機(jī)房布置于地下室,冷卻塔設(shè)置在建筑物裙房屋頂,水系統(tǒng)選擇閉式同程兩管制變流量系統(tǒng)。主要內(nèi)容包括:負(fù)荷計(jì)算、空氣處理過程和風(fēng)量的設(shè)計(jì)與計(jì)算、設(shè)備選型、風(fēng)系統(tǒng)與水系統(tǒng)阻力計(jì)算以及系統(tǒng)控制方案的確定等。在設(shè)計(jì)中應(yīng)結(jié)合建筑的具體特點(diǎn)制定合理的空調(diào)運(yùn)行方案,在符合實(shí)際情況的前提下盡量使系統(tǒng)具備更強(qiáng)的功能性和可操作性。 關(guān)鍵詞: 空調(diào)系統(tǒng),空氣處理過程,風(fēng)機(jī)盤管加獨(dú)立新風(fēng),板式換熱器 II Airconditioning System Design for Zhengzhou Yujie Business Building Abstract The object of this design is an airconditioning terminal system with the refrigeration 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(shù) .................................................... 2 室外計(jì)算參數(shù) .......................................... 2 室內(nèi)設(shè)計(jì)參數(shù) .......................................... 3 建筑材料簡介 ................................................ 4 2. 負(fù)荷計(jì)算 ......................................................... 5 室內(nèi)冷負(fù)荷計(jì)算 .............................................. 5 墻體和屋面?zhèn)鳠岬脽嵋鸬睦湄?fù)荷 ........................ 5 玻璃窗傳熱得熱引起的冷負(fù)荷 ............................ 5 玻璃窗日射得熱引起的冷負(fù)荷 ............................ 5 內(nèi)維護(hù)結(jié)構(gòu)形成的冷負(fù)荷 ................................ 6 照明散熱引起的冷負(fù)荷 .................................. 6 人體散熱引起的冷負(fù)荷 .................................. 7 設(shè)備散熱引起的冷負(fù)荷 .................................. 7 室外新風(fēng)引起的冷負(fù)荷 .................................. 8 室內(nèi)熱負(fù)荷計(jì)算 ............................................. 13 通過圍護(hù)結(jié)構(gòu)的溫差傳熱量形成的熱負(fù)荷 ................. 13 附加耗熱量形成的熱負(fù)荷 ............................... 13 外門開啟沖入冷風(fēng)耗熱量形成的熱負(fù)荷 ................... 13 新風(fēng)熱負(fù)荷 ........................................... 14 3. 空調(diào)方案的確定 .................................................. 17 空調(diào)系統(tǒng)的 分類 ............................................. 17 按負(fù)擔(dān)室內(nèi)負(fù)荷所用介質(zhì)種類分類 ....................... 17 按空氣處理設(shè)備的設(shè)置情況分類 ......................... 18 空調(diào)方案的比較 ............................................. 18 各種空調(diào)系統(tǒng)使用條件和使用特點(diǎn) ....................... 18 常用空調(diào)系統(tǒng)比較 ..................................... 19 IV 空調(diào)系統(tǒng)使用指標(biāo)概括比較 ............................. 21 空調(diào)方案的確定 ............................................. 21 4. 風(fēng)量計(jì)算 ........................................................ 24 送風(fēng)量的確定 ............................................... 24 新風(fēng)量的確定 ............................................... 24 滿足衛(wèi)生要求 ......................................... 24 補(bǔ)充局部排風(fēng)量 ....................................... 25 保證空調(diào)房間的正壓要求 ............................... 25 5. 空氣調(diào)節(jié)設(shè)備的選擇 .............................................. 26 空氣處理機(jī)組的選擇 ......................................... 26 空調(diào)機(jī)組選型方法 ..................................... 26 空調(diào)機(jī)組選型結(jié)果 ..................................... 26 風(fēng)機(jī)盤管機(jī)組的選擇 ......................................... 27 風(fēng)機(jī)盤管 機(jī)組選型結(jié)果 ................................. 27 6. 空調(diào)系統(tǒng)的設(shè)計(jì)計(jì)算 .............................................. 29 風(fēng)系統(tǒng)的阻力計(jì)算 ........................................... 29 風(fēng)管設(shè)計(jì)的基本任務(wù) ................................... 29 風(fēng)管的選擇 ........................................... 29 風(fēng)管內(nèi)風(fēng)速的選擇 ..................................... 29 氣流組織和送風(fēng)形式 ................................... 30 計(jì)算方法 ............................................. 31 計(jì)算結(jié)果 ............................................. 31 水系統(tǒng)的阻力計(jì)算 ........................................... 33 水系統(tǒng)形式的分類 ..................................... 33 水系統(tǒng)形式的確定 ..................................... 34 計(jì)算方法 ............................................. 34 冷凍水系統(tǒng)設(shè)計(jì)計(jì)算 ................................... 35 冷卻水系統(tǒng)設(shè)計(jì)計(jì)算 ................................... 40 冷凝水系統(tǒng)管路設(shè)計(jì) ................................... 40 7. 冷凍熱力站 設(shè)計(jì) .................................................. 42 水冷式冷水機(jī)組的選擇 ....................................... 42 V