christian louboutin Thread the new toothed tube ev

Thread the new toothed performance of heat pipe evaporator

Pattern of air-conditioning evaporator heat transfer tube to simulate the predicted results show that: the structure of the four tooth thread evaporator heat exchanger heat transfer tube increased with the increase of refrigerant flow, of which the largest cross-tooth heat exchange tubes, thin teeth tube a bit weak, ordinary tooth tube followed, but were better than the evaporator tubes. The entire flow range, the 4 tube evaporator pressure a value of ~ a 57 ~ Mian hoe like a cracked 28 No. 4 20O7 in August of Refrigeration JoumdofRefi/gerat/on11o /. 28, No. 4August. 2OO7 downward changes are similar, fluorescent tubes, the evaporator pressure drop than the other tube evaporator increased slightly. L3J3) air-cooled evaporator thermal resistance due mainly to the air side, increase the heat transfer coefficient of refrigerant-side heat exchanger on the whole ... little influence on the heat transfer coefficient, so performed better in single-tube teeth thin tube, Cross-tooth one, in the heat exchanger where performance is not outstanding. However, the above two heat transfer performance of evaporator tube flow changes in the whole range is still better than ordinary evaporator 『51, indicating that cross-tooth tube, thin tooth is the better performance of the heat pipe tube, in particular, cross-gear control,[link widoczny dla zalogowanych], as The large number of nucleation is a good evaporation heat transfer tube. 4) When the heat exchanger design, to tube, tube integrated test. 0 into account, improved heat transfer performance of tube, it should be a corresponding increase in tube,[link widoczny dla zalogowanych], heat transfer performance of the fin side. For example, the cross-tube evaporator tube gear performance is better, if you change the air side finned tube structure, such as mining 『71 red with a better heat transfer fin, the overall heat transfer efficiency will be improved. Reference [8] [1] Ming-Dao Xin, Zhou Jie, Zhang Gang, et al. R134a in horizontal three-dimensional micro-fin tube boiling heat transfer [J]. Chongqing University (Natural Science), 20OO, 23j (1) :74-77. r1n] [2] Wu Xiaomin, Wang Xiaoliang, Wang city. Horizontal micro-fin tube heat transfer characteristics of flow Experimental study of evaporation [J]. Chemical Industry and Engineering, 2003,54 (9): 1216 one by one 58-1219. ChamraLM. WebbRL. AdvancedMicro-FinTubesforCondensation [J]. Int. J. HeatandMassTranger. 1996,[link widoczny dla zalogowanych],39 (9): l839-1846. ChamraLM. WebbRL. Advanced3Jlicro-FinTubesforEvaporation [J]. hat. J. HeatandMassTransfer. 1996,39 (9): l827-1838. CavaUiniA. DelColD, DorettiL, LongoGA, RossettoL. Heattransferandpressuredropduringcondensationofrefrigerantsinsidehorizontalenhancedtu ~ [JJ. hat. J. 0fReg. , 2OOO ,23:4-25. CavalliniaA, CensiG, DelColD,[link widoczny dla zalogowanych], DorettiL, LongoGA, RossettoL. zdioC. Condensationinsideandoutsidesmoothandenhancedtubes-areviewofrecentresearch [J]. Int. J. ofRefrig. . 2oO3. 26:373-392. DongsooJung, YoungmokCho, h0Park. Flowcondensafi-Oilheattransfercoel/icientsofR22, R134a, R407C, andR410Ainsideplainandmicmfintllbes [J]. Inc. J. 0fRe-frig. ,2004,27:25-32. Sangxi ago, Tang Yongli,[link widoczny dla zalogowanych], Lifeng Li, Lv Huiling. Thin copper thread tooth analysis of heat transfer experiment [J], refrigeration and air conditioning, 2004,4 (5) :78-81. Yang Shiming, Tao Wen-Quan. Heat Transfer [M]. Third Edition. Beijing: Higher Education Press, 1998. Deng Bin, Tao Wen-Quan, evaporator flow arrangements of the numerical simulation and analysis [J]. Refrigeration Technology, 2006,27 (1) :28-33.

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