【正文】 上海市某食品冷藏庫(kù)制冷系統(tǒng)設(shè)計(jì) I 上海市某食品冷藏庫(kù)制冷系統(tǒng)設(shè)計(jì) 摘 要 本設(shè)計(jì)是一篇關(guān)于上海市某食品冷藏庫(kù)制冷系統(tǒng)的設(shè)計(jì)。我們的主要任務(wù)是完成冷凍站和冷間制冷系統(tǒng)的設(shè)計(jì)。在本設(shè)計(jì)中，我們通過(guò)對(duì)冷藏庫(kù)各冷間負(fù)荷的計(jì)算以及冷庫(kù)制冷系統(tǒng)方案的確定來(lái)選擇制冷壓縮機(jī)，輔助設(shè)備以及冷卻設(shè)備。在選型前，我們還對(duì)制冷系統(tǒng)方案進(jìn)行了經(jīng)濟(jì)技術(shù)分析，綜合多方面考慮，決定選用雙級(jí)制冷壓縮，氨泵強(qiáng)制供液的方案。最后，我們還對(duì)冷庫(kù)的氣流組織，管道布置，管道保溫以及自動(dòng)控制方案進(jìn)行了簡(jiǎn)單地分析與說(shuō)明。 關(guān)鍵詞 ：雙級(jí)壓縮 氨泵 強(qiáng)制供液 制冷系統(tǒng) 中間冷卻 上海市某食品冷藏庫(kù)制冷系統(tǒng)設(shè)計(jì) II The Design of The Refrigeration System of Frozen Food Store Abstract The graduation design is a design of the refrigeration system of the frozen food in Shanghai. The main task is to finish the system design of the refrigeration station and refrigerating room. In the design, the refrigeration pressor, the cooling equipment and the auxiliary equipment are chosen by calculating the load of every refrigeration room of the cold store and determining the program of the refrigeration . Before choosing the system equipment, we have made the economic and technical analysis for the refrigeration system. After considering every aspect, twostage pression , and using ammonia pump to supply the refrigerator are established. At last , the anization of air flow, the arrangement and the insulation of pipes, and the automatic control is analyzed and illustrated simply. Key words: twostage pression 。 using ammonia pump to supply the refrigerator 。 the refrigeration system 。 medial cooling. 上海市某食品冷藏庫(kù)制冷系統(tǒng)設(shè)計(jì) I 目 錄 目 錄 .............................................................................................................................. I 工程概況 ..................................................................................................................1 各冷間熱工計(jì)算 ..............................................................................................2 氣象資料 ..................................................................................................................4 冷庫(kù)圍護(hù)結(jié)構(gòu)傳熱量 1Q ............................................................................................5 庫(kù)房各冷間圍護(hù)結(jié)構(gòu)傳熱量 1Q ........................................................................7 計(jì)算基礎(chǔ)資料 ................................................................................................9 各冷間貨物放熱量 2Q .................................................................................. 10 電機(jī)運(yùn)行熱 當(dāng)量 4Q ................................................................................................ 11 各冷間電機(jī)運(yùn)行熱當(dāng)量 4Q ............................................................................ 12 計(jì)算基礎(chǔ)資料 ................................................................................................ 12 冷卻設(shè)備負(fù)荷和機(jī)械負(fù)荷 ......................................................................................... 14 各冷間計(jì)算冷負(fù)荷 Q 匯總 .............................................................................. 14 各冷間機(jī)械負(fù)荷 Qj匯總 ................................................................................ 15 制冷系統(tǒng)方案的依據(jù)、原則及內(nèi)容 .......................................................................... 17 制冷系統(tǒng)方案的原則 ..................................................................................... 17 確定制冷系統(tǒng)方案 .................................................................................................. 17 確定制冷系統(tǒng)蒸發(fā)溫度回路 ........................................................................... 19 冷間冷卻方式的確定 ..................................................................................... 21 冷庫(kù)供冷方式的確定： .................................................................................. 22 經(jīng)濟(jì)技術(shù)分析 ......................................................................................................... 23 壓縮機(jī)的選型計(jì)算 .................................................................................................. 25 制冷壓縮機(jī)的選型 ......................................................................................... 26 冷凝器的作用 ................................................................................................ 30 冷卻設(shè)備選型計(jì)算 .................................................................................................. 31 選型計(jì)算 ....................................................................................................... 32 中間冷卻器的作用 ......................................................................................... 33 氨泵選型計(jì)算 ......................................................................................................... 35 選型計(jì)算 ....................................................................................................... 35 低壓循環(huán)貯液桶的作用 .................................................................................. 36 油分離器選型計(jì)算 .................................................................................................. 38 選型計(jì)算 ....................................................................................................... 38 高壓貯液器的作用 ......................................................................................... 39 空氣分離器選型 ...................................................................................................... 40 空氣分離器的選型 ......................................................................................... 40 集油器的作用 .............................................................................................. 40 冷卻塔的選擇 計(jì)算 ................................................................................................. 41 上海市某食品冷藏庫(kù)制冷系統(tǒng)設(shè)計(jì) II 冷卻水池選型 ....................................................................................................... 42 緊急泄氨器選型 .................................................................................................... 42 第 5 章 冷間制冷工藝設(shè)計(jì) ................................................................................................... 44 冷間的制冷工藝設(shè)計(jì) ............................................................................................... 44 系統(tǒng)管