| Autor: |
Mirakusuma, Windy H., Setyawan, Andriyanto, Simbolon, Luga M. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3090 Issue 1, p1-7, 7p |
| Abstrakt: |
Flow quality, void fraction, and superficial velocity are important parameters in two-phase flow. Prediction of flow quality, void fraction, and superficial velocity of dimethyl ether in a horizontal evaporator has been studied for dimethyl ether (RE170). This study was applied on an air conditioner of 2.6 kW cooling capacity using 7.9- and 6.3-mm evaporator pipe with six different evaporating temperatures. The flow quality was calculated in the order of 0.199 to 0.310 and the void fraction is in the order of 0.962 to 0.991. As the evaporating temperature decreases, the flow quality and void fraction increase. A range of superficial gas velocity of 4.5 to 22.9 m/s was obtained for 7.9 mm pipe diameter. The velocity increases to the range of 7.2 to 36.0 m/s if 6.3 mm pipe is used. In spite of produces higher pressure drop, the smaller pipe is preferred as it can guarantee the oil to properly return to the compressor to prevent compressor oil starving. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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