【正文】 用建筑特別是高層建筑也 開(kāi)始布置中央空調(diào) 系統(tǒng) ， 比如， 在近 些 年建成的商廈、賓館、商品批發(fā)市場(chǎng)、體育文化娛樂(lè)中心 和 多功能辦公樓等建筑中 大多開(kāi)始 采用中央空調(diào)系統(tǒng)。我國(guó)固 定資產(chǎn)投資呈現(xiàn)穩(wěn)定增長(zhǎng)趨勢(shì)，在所有增長(zhǎng)中房地產(chǎn)投資的同比增長(zhǎng)幅度最大 。 中央空調(diào)設(shè)施龐大而復(fù)雜，向來(lái)是高級(jí)賓館、豪華酒店 、 大型寫(xiě)字樓的專用品 。由于處于市場(chǎng)導(dǎo)入期，市場(chǎng)規(guī)模底數(shù)較低， 2020— 2020 年增速迅猛，但隨著市場(chǎng)規(guī)模底數(shù)不斷提高和價(jià)格持續(xù)走低，銷售額方面增速卻進(jìn)一步趨緩，預(yù)計(jì)以后幾年平均增長(zhǎng)率會(huì)保持在2530%左右。 關(guān)鍵詞： 空調(diào)系統(tǒng)，空氣處理過(guò)程，風(fēng)機(jī)盤(pán)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(jiǎn)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(guò)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(kāi)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(pán)管機(jī)組的選擇 ......................................... 27 風(fēng)機(jī)盤(pán)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 制冷機(jī)組選擇依據(jù) ..................................... 42 制冷機(jī)組選型方案 ..................................... 44 板式換熱機(jī)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