Experimental data on the dependence of the viscosity of water- and ethylene glycol-based nanofluids on the size and material of particles

2016 ◽  
Vol 61 (3) ◽  
pp. 152-154 ◽  
Author(s):  
V. Ya. Rudyak ◽  
A. V. Minakov ◽  
M. S. Smetanina ◽  
M. I. Pryazhnikov
Keyword(s):  
Experimental Data ◽  
Ethylene Glycol

scholarly journals Dispersion stability and rheological characteristics of water and ethylene glycol based zinc oxide nanofluids

2020 ◽  
pp. 187-187
Author(s):  
Adnan Qamar ◽  
Attique Arshad ◽  
Zahid Anwar ◽  
Rabia Shaukat ◽  
Muhammad Amjad ◽  
...  
Keyword(s):  
Experimental Data ◽  
Ethylene Glycol ◽  
Industrial Applications ◽  
Deionized Water ◽  
Rheological Characteristics ◽  
Particle Loading ◽  
Viscosity Models ◽  
Vis Spectroscopy ◽  
Settling Speed ◽  
The Stability

With advancement of nanoscience, ?nanofluids? are becoming quite popular among thermal engineers. High thermal conductivity, relatively less settling speed, and higher surface area of nanoparticles are a few key promoting properties. The last two decades have seen dramatic progress towards using nanoparticles in industrial applications. However, the stability and rheological characteristics of prepared nanofluids have serious effects on their transport characteristics, but unfortunately, this has not found proper attention from researchers. In this study, stability and rheological characteristics of ZnO nanoparticles within deionized water, ethylene glycol, and their blends have been extensively tested. Stability was observed using UV-vis spectroscopy, while the viscosity was measured with the help of a rheometer. The data was collected with 0.011-0.044 wt. % loading of nanoparticles, while experiments were conducted within 15-55oC temperature range. Better stability was recorded when nanofluids were prepared with pure ethylene glycol. Experiments showed that the viscosity increased with particle loading, whereas the effect of surfactants appeared to be insignificant. Research results were used to assess predictions of different viscosity models. Experimental data was overpredicted by Einstein, Brinkman, and Batchelor?s models.

scholarly journals Modelling and optimization of metals (As, Ca, Cd, Cr, Cu, Fe, Mg, and Pb) and Ethylene glycol butyl ether in paints using response surface method

2021 ◽  
Vol 23 (2) ◽  
pp. 177-190
Author(s):  
A. F. I. Apanpa-Qasim ◽  
A. O. Adeyi ◽  
Sharvari Deshmukh
Keyword(s):  
Experimental Data ◽  
Response Surface Methodology ◽  
Ethylene Glycol ◽  
Response Surface ◽  
Response Surface Method ◽  
Principal Component ◽  
Butyl Ether ◽  
Surface Method ◽  
Principal Component Analyses ◽  
Modelling And Optimization

Response surface methodology (RSM) and principal component analyses (PCA) modelling tools have been used in this study to quantitatively describe the interaction effects of more than one factor on system response for the modelling and optimization of experimental data. In Nigeria, there are no stringent policies in place by the government on paint production and this has led to unregulated paint products by producers in the commercial markets. Water-based paints currently available in Nigerian market were sampled. Experimental data of Metals (As, Ca, Cd, Cr, Cu, Fe, Mg, and Pb) and Ethylene glycol butyl ether (Volatile organic compounds (VOC)) measured using Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES) and Gas Chromatography-Flame Ionisation Detector (GC-FID), respectively was used to develop a mathematical model. The principal component analyses were explained with a cumulative variance of 82% for the VOC and 76% for metals based on manufacturers. Estimated responses were compared with the experimentally determined responses and prediction capabilities of Response Surface Methodology. In the RSM, the 2 developed model had R value of 0.9569, with optimized value at 0.10 % (1000ppm) of Ethylene glycol butyl ether and concentration (ppm) ranges of As (383.0-1,930.0), Ca (614.0-10,400.0), Cd (98.0-2,000.0), Cr (10.3- 225.0), Cu (133.0-1,840.0), Fe 742.0-2,910.0, Mg (4,000.0-99,510.0), Pb (170.0-3,230.0). The correlation and optimization study employed are applicable for assessing the impact of hazardous air pollutants on indoor air quality and a good applicability in paint industries to produce products within the set limit of international standards. For the purpose of reducing sick building syndrome and protecting public health, it was important to investigate paints and sealers extensively. Keywords: VOCs; Paint; metals; Ethylene glycol butyl ether; Response Surface Method

Comparison of Ethylene-Glycol Coolants With/Without Additives for Subcooled Boiling Conditions

2012 ◽  
Author(s):  
Ryan Ehid ◽  
Edward V. McAssey ◽  
Lee Reichard ◽  
Jurgen De Kimpe ◽  
Serge Lievens
Keyword(s):  
Experimental Data ◽  
Heat Flux ◽  
Ethylene Glycol ◽  
Corrosion Protection ◽  
Thermal Performance ◽  
Experimental Results ◽  
Subcooled Boiling ◽  
Maximum Heat ◽  
Maximum Heat Flux ◽  
Aqueous Ethylene Glycol

This paper presents experimental data comparing the thermal performance of aqueous ethylene-glycol mixtures with and without additives. These additives are used to provide corrosion protection, but their presence can also improve the coolant thermal performance. The experimental results show that the coolant with additives yields wall temperatures approximately 50°C lower than the non-additive coolant at the maximum heat flux condition.

Heat Transfer Experiments of Ethylene Glycol-Water Mixture in Multi-Port Serpentine Meso-Channel Heat Exchanger Slab

2010 ◽  
Author(s):  
Mesbah G. Khan ◽  
Amir Fartaj
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Ethylene Glycol ◽  
Test Fluid ◽  
Water Mixture ◽  
Micro Channel ◽  
Working Fluids ◽  
Micro Channels

In past few years, narrow diameter flow passages (≤3 mm) have attracted huge research attentions due to their several advantageous features over conventional tubes (≥6 mm) especially from the view points of higher heat transfer, lesser weight, and smaller device size. Several classifications of narrow channels, based on sizes, are proposed in the open literature from mini to meso and micro (3 mm to 100 μm). The meso- and micro-channels have not yet entered into the HVAC and automotive heat exchanger industries to the expected potentials to take the above-mentioned advantages. The reasons may be the limited availability of experimental data on pressure drop and heat transfer and the lack of consolidated design correlations as compared to what is established for compact heat exchangers. While a number of studies available on standalone single straight channels, works on multi-channel slab similar to those used as typical thermal heat exchanger core elements are inadequate, especially the research on multichannel serpentine slab are limited in the open literature. The 50% ethylene glycol and water mixture is widely used in heat exchanger industry as a heat transfer fluid. Studies of pressure drop and heat transfer on this commercially important fluid using narrow tube multi-channel slab is scarce and the availability of experimental data is rare in the open literature. Conducting research on various shapes of meso- and micro-channel heat exchanger cores using a variety working fluids are a definite needs as recommended and consistently urged in ongoing research publications in this promising area. Under present long-term project, an automated dynamic single-phase experimental infrastructure has been developed to carryout the fluid flow and heat transfer research in meso- and micro-channel test specimens and prototype microchannel heat exchanger using a variety of working fluids in air-to-liquid crossflow orientation. In the series, experiments have been conducted on 50% ethylene glycol and water solution in a serpentine meso-channel slab having 68 individual channels of 1 mm hydraulic diameter to obtain the heat transfer data and the general pressure drop nature of the test fluid. Current paper presents the heat transfer characteristics of ethylene glycol-water mixture and the Reynolds number effects on pressure drop, heat transfer rate, test specimen NTU and effectiveness, overall thermal resistance, and the Nusselt number.

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