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D. R. Waghole R. M. Warkhedkar V. S. Kulkarni R. K. Shrivastva 《Heat and Mass Transfer》2016,52(2):309-313
Convective heat transfer in the flow of silver nanofluid through a straight tube with twisted tape inserts was investigated experimentally. This straight tube was used as absorber/receiver tube in parabolic trough collector. The experiments were conducted for Reynolds number range 500 < Re < 6000 with twisted tape inserts of different twist ratio range 0.577 < H/D < 1.732. This experimental study shows that twisted tape inserts enhances heat transfer rate in the tube. The heat transfer coefficient and friction factor in the flow of silver nanofliud with 5 % volume fraction (concentration) are higher compared to the flow of water. From this study, Nusselt number, friction factor and enhancement factor are found as 2.0–3.0 times, 10–48.5 and 135–175 %, respectively with silver nanofliud. Finally new possible correlations for predicting heat transfer and friction factor in the flow of silver nanofliud through the straight tube with twisted tape inserts are proposed. 相似文献
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P. C. Srivastava Rama Dwivedi A. Srivastava Surendra Kumar Manoj Shrivastva 《Journal of Radioanalytical and Nuclear Chemistry》2011,290(1):149-151
Labile pool (E-value) of Mn and extractable soil Mn content using six multinutrient extractants were estimated in fifty surface
(0–15 cm) soil samples. Labile pool of Mn was poorly correlated to the general soil properties and modified Olsen’s-; 0.01 M
CaCl2- and 1 M MgCl2-extractable Mn contents but it was positively and significantly correlated to diethylene triamine pentaacetic acid (DTPA),
pH 7.3; ammonium bicarbonate + DTPA (pH 7.6); and Mehlich-3-extractable soil Mn contents. The multinutrient extractants involving
only simple salt solutions were not useful to assess the availability of Mn in soils. 相似文献
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Monika Sharma Shrestha Shrivastva Manish Kumar Shobhit Rabbani Syed Arman Garg Arun 《Journal of Cluster Science》2022,33(6):2589-2600
Journal of Cluster Science - The aim of present study was to develop and evaluate novel in situ nanoemulgel (NEG) of azithromycin (AZM) with eugenol for intra-pocket drug delivery for the treatment... 相似文献
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