冷藏庫設計


目     錄

摘要……………………………………………………………3
1.設計基本資料
1.1設計目的…………………………………………………………………4
1.2設計題目…………………………………………………………………4
1.3設計指標…………………………………………………………………4
1.4設計地點室外氣象參數(shù)…………………………………………………4
1.5冷藏庫室內設計參數(shù)……………………………………………………4
2.冷藏庫熱工計算
2.1冷藏庫噸位分配…………………………………………………………5
2.2冷藏庫尺寸計算…………………………………………………………5
2.3庫房平面設計……………………………………………………………6
2.4圍護結構換熱系數(shù)的確定………………………………………………6
2.5確定圍護結構絕熱層厚度………………………………………………6
3.庫房冷負荷的計算
3.1圍護結構熱流量…………………………………………………………10
3.2貨物熱流量………………………………………………………………12
3.3電機運轉熱流量…………………………………………………………13
3.4冷間操作熱流量…………………………………………………………13
3.5庫房冷卻設備冷負荷……………………………………………………14
3.6冷間機械負荷……………………………………………………………15
4.設備選型
4.1冷凝溫度與蒸發(fā)溫度的確定……………………………………………16
4.2制冷原理的熱工計算……………………………………………………17
4.3壓縮機的選擇計算………………………………………………………17
4.4冷凝器的選擇計算………………………………………………………18
4.5冷風機選擇計算…………………………………………………………19
4.6中間冷卻器的選擇計算…………………………………………………21
4.7油分離器的選擇計算……………………………………………………22
4.8高壓貯液器的選擇計算…………………………………………………22
4.9低壓循環(huán)貯液器的選擇計算……………………………………………23
4.10集油器的選擇計算……… ……………………………………………23
4.11冷卻塔的選擇計算………… …………………………………………23
5.庫房風系統(tǒng)的布置及水力計算
5.1冷卻間1、2的冷分配布置………………………………………………24
5.2冷凍間3、4的冷分配布置………………………………………………24
5.3冷藏間5、6、7的冷分配布置……………………………………………24
6.庫房供回液的流量計算
6.1氨液密度的計算…………………………………………………………26
6.2供入庫房中氨的計算流量………………………………………………27
7.冷卻水系統(tǒng)的水力計算
7.1冷卻水管道的水力計算…………………………………………………28
7.2冷卻水泵的選擇計算……………………………………………………28
8.氨供回管的水力計算
8.1供氨管道的水力計算……………………………………………………29
8.2回氣管的水力計算………………………………………………………30
8.3機房氨管道的水力計算…………………………………………………30參考文獻………………………………………………………………………34
英語原文及譯文……………………………………………………………35

摘要
分配性冷藏庫他們主要建設在大中城市、人口較多的水陸交通樞紐，專門貯藏經過冷加工的食品，以工調節(jié)淡旺季節(jié)、保證市場供應、提供外貿出口和做長期貯備之用。其特點是冷藏容量大并考慮多種食品的貯藏，其凍結能力小僅用于長距離調入凍結食品在運輸過程中軟化部分的再凍及當?shù)匦∨可r食品的凍結。壓縮式制冷是根據(jù)制冷原理將壓縮機、冷凝器、節(jié)流閥和蒸發(fā)器，以及為了使制冷效能更高、運行更安全的輔助設備（如油分離器、貯液器、氣液分離器、循環(huán)儲液桶、集油器、放空氣器、閥件、儀表等）用管道連接組成的一個閉合制冷循環(huán)。
關鍵詞：壓縮  冷藏庫  節(jié)流  中間完全冷卻

ABSTRACT
They build the assigning freezer in large and medium cities , people's more hubs of communications of land and water , is it undergo food of cold working to preserve specially , regulate light busy season section , guarantee market supply , offer foreign export and make with worker stock for a long time use. Characteristic its to refrigerate capacity to be heavy considering many kinds of preservation of food, it freeze ability to be little to used in at a long distance is it freeze food soften part freeze and local short run catch to freeze fresh food in the course of transporting to call inning only. Person who compress refrigeration according to refrigeration principle the compressor , condenser , choke valve and evaporimeter, and for make refrigeration to be efficiency even more high and operating still more safer assisting equipment (Such as the oil separator, person who store liquid,, angry liquid separator , circulation store liquid barrel , collect oil device , person who drop a hint , valve piece , instrument ,etc.), close refrigeration circulation with pipeline one made up to join
Keyword:  Compression  Freezer   Throttle   Complete cooling of the middle