2013
DOI: 10.1016/j.ijheatmasstransfer.2013.04.031
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Experimental study on the heat transfer characteristics of nanorefrigerants in an internal thread copper tube

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Cited by 52 publications
(22 citation statements)
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“…Summaries of experimental result shows in Table 1. Furthermore, in [7] using method preparation of Cu-R141b, Al-R141b, Al2O3-R141b and CuO-R141b nanorefrigerant. The nanoparticle directly mixed to measured amount of refrigerant based on required of concentration studies.…”
Section: Alternative Refrigerantmentioning
confidence: 99%
“…Summaries of experimental result shows in Table 1. Furthermore, in [7] using method preparation of Cu-R141b, Al-R141b, Al2O3-R141b and CuO-R141b nanorefrigerant. The nanoparticle directly mixed to measured amount of refrigerant based on required of concentration studies.…”
Section: Alternative Refrigerantmentioning
confidence: 99%
“…Reported works point to different levels of thermophysical properties enhancement, depending on the nanoparticle used and the base fluid/nanoparticle ratio. recorded a 104% enhancement in thermal conductivity over that of a base fluid of R113 by introducing Carbon Nanotubes (CNT) nanoparticle, Peng et al (2010) experimented with nanorefrigerant produced from R113 and CNT and observed an increase of 61% in nucleate boiling, Sun and Yang (2013) reported an increase of 17-25% and 3 -20% respectively for maximum heat transfer coefficient and average heat transfer coefficient values while testing nanorefrigerants produced from R141b and Cu, Al, Aluminum Oxide (Al2O3) and Cupper Oxide (CuO) while Henderson et al (2010) recorded over 100% increase in boiling heat transfer coefficient with nanorefrigerant produced from R134a and CuO. While these may not be the only thermophysical properties of concern for a refrigerant, studies have shown that they are all reasonably affected (either positively or negatively) by the addition of nanoparticles to the base refrigerant.…”
Section: Preparation Of Nanorefrigerants and Thermal Improvements Achmentioning
confidence: 99%
“…The nanorefrigerant containing TiO 2 nanoparticles of 0.1 wt.% displayed the highest energy savings-up to 25%. Sun and Yang [20] studied the use of R141b/Cu, R141b/Al, R141b/Al 2 O 3 , and R141b/CuO nanorefrigerants in a computer-aided test section to investigate the effects of material types and vapor quality on flow boiling heat transfer inside a horizontal tube. For the same mass fraction, the Cu-R141b nanorefrigerant had the highest heat transfer coefficient, and R141b/CuO gives the minimum heat transfer coefficient.…”
Section: Hindawi Publishing Corporation Advances In Mechanical Enginementioning
confidence: 99%