換熱器
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列管式換熱器
列管式換熱器的列管可采用普通碳鋼管、不銹鋼管、鋁管或銅管。換熱器在工作過程中長(zhǎng)期接觸水及有機(jī)雜質(zhì)，列管腐蝕嚴(yán)重。采用不銹鋼列管可以有效地防止腐蝕，管壁不容易結(jié)垢，容易清理，傳熱系數(shù)較高，且使用壽命的延長(zhǎng)也彌補(bǔ)了價(jià)格較貴的缺點(diǎn)。同樣面積的冷凝器，其列管材料和冷卻介質(zhì)流速的不同對(duì)傳熱系數(shù)產(chǎn)生明顯影響。
稱直徑 | 管程數(shù) | 管子數(shù)量 | 換熱面積 公稱值／計(jì)算值 | 管程通道截面積 管程通道流速為0.5m/sec時(shí)的流量m/hr | ||||
管子長(zhǎng)度（m） | 碳鋼管φ25×2.5 | |||||||
1500 | 2000 | 3000 | 4000 | 不銹鋼管φ25×2 | ||||
159 | Ⅰ | 13 | 1.5/1.62 | 2./2.17 | 3/3.27 | 0.0044/0.0049 | 7.92/8.82 | |
219 | Ⅰ | 26 | 3/3.00 | 4/4.02 | 6/6.06 | 8/8.11 | 0.0082/0.0090 | 14.76/16.20 |
Ⅱ | 26 | 3/3.00 | 4/4.02 | 6/6.06 | 8/8.11 | 0.0041/0.0045 | 7.38/8.10 | |
273 | Ⅰ | 44 | 5/5.08 | 7/6.18 | 10/10.26 | 14/13.72 | 0.0138/0.0152 | 24.84/27.36 |
Ⅱ | 40 | 5/4.62 | 6/6.19 | 9/9.33 | 12/12.47 | 0.0063/0.0069 | 11.34/12.42 | |
325 | Ⅰ | 60 | 7/6.93 | 9/9.28 | 14/14.00 | 19/18.71 | 0.0188/0.0208 | 33.84/37.44 |
Ⅱ | 56 | 6/6.47 | 9/8.66 | 13/13.06 | 17/17.46 | 0.0088/0.0097 | 15.84/17.46 | |
400 | Ⅰ | 119 | 14/13.74 | 18/18.41 | 28/27.76 | 37/37.10 | 0.0374/0.0412 | 67.32/74.16 |
Ⅱ | 110 | 13/12.70 | 17/17.02 | 26/25.66 | 34/34.20 | 0.0173/0.0190 | 31.14/34.20 | |
500 | Ⅰ | 185 | 45/4.15 | 55/57.68 | 0.0581/0.0641 | 104.58/115.38 | ||
Ⅱ | 180 | 40/41.99 | 55/57.68 | 0.0283/0.0312 | 50.94/56.16 | |||
600 | Ⅰ | 169 | 60/62.7 | 85/83.88 | 0.0845/0.0932 | 152.10/167.76 | ||
Ⅱ | 266 | 60/62.05 | 80/82.94 | 0.0418/0.0461 | 75.24/82.98 | |||
700 | Ⅰ | 379 | 90/88.41 | 120/118.17 | 0.0091/0.1313 | 214.38/236.34 | ||
Ⅱ | 358 | 85/83.51 | 110/111.62 | 0.562/0.0620 | 101.16/111.60 | |||
800 | Ⅰ | 511 | 120/119.20 | 160/159.16 | 0.1605/0.1770 | 288.90/318.60 | ||
Ⅱ | 488 | 115/113.83 | 150/152.16 | 0.0767/0.0845 | 138.06/152.10 | |||
900 | Ⅰ | 649 | 150/151.39 | 200/202.36 | 0.2039/0.2248 | 367.02/404.46 | ||
Ⅱ | 630 | 145/146.96 | 195/196.44 | 0.0990/0.1091 | 178.20/196.38 | |||
1000 | Ⅰ | 805 | 185/187.78 | 250/251.00 | 0.2529/0.2788 | 455.22/501.84 | ||
Ⅱ | 792 | 185/184.75 | 245/246.95 | 0.1244/0.1374 | 233.92/246.96 | |||
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