| Autor: |
Sukkar, Khalid A., Mahmood, Hussein Y., Mikhelf, Wasan K. |
| Předmět: |
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| Zdroj: |
International Review of Mechanical Engineering; Oct2019, Vol. 13 Issue 10, p597-607, 11p |
| Abstrakt: |
A double tube heat exchanger type has been designed and built as a sub-scale sample of shell and tube heat exchanger that has been used in Midland Refineries Company-Iraq in order to evaluate the effect of nanocoating in heat transfer performance of the experimental rig with and without nanocoating of tubes made from brass alloy B-111 have been tested in order to evaluate the heat transfer performance at different inner fluid temperature (70, 75, 80)°C, different volume flow rate of inner flow at (100, 200, 300) L/h and different volume flow rate of outer flow at (60, 120, 180, 240 300, 360 420) L/h. The results have showed that the performance of coated tube has enhanced the heat transfer rate from 15.9 to 41.82 percentage compare with uncoated tube due to enhancing in heat transfer coefficient of coated surface. The percentage of enhancement heat transfer rate has increased with the increase of the inlet inner fluid temperature. From the experimental results, it has been noted that the percentage of enhancement of heat transfer depends on the heat transfer coefficient of the tube outer surface so it has increased the percentage of enhancement of heat transfer until its value has exceeded the heat transfer coefficient of tube inner surface then the percentage of enhancement has started to decrease with volume flow rate of outer fluid increased. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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