Preparation of binary nanofluid with heat transfer additives by particle surface functionalisation

Muhammad, Umar Aliyu; Bhattacharyya, D. P.; Endrino, José L.; Fereres, Sonia

doi:10.1007/s42247-021-00260-z

Cited by 5 publications

(3 citation statements)

References 49 publications

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“…The surface functionalized ANPs were allowed to stand for 20 min for proper adsorption before dispersion. This method of nanofluid preparation with HTA was designed and reported by Muhammad et al [41] (Fig. 1).…”

Section: Sample Preparationmentioning

confidence: 99%

“…Pressure transducers, T-type thermocouples temperature sensors, mass flow metres, and conductivity sensors were inserted in the pipelines Fig. 1 Schematic nanofluid preparation by a two-step method [41] at both upstream and downstream of the ejector to record both input and output data. These sensors were connected to an instrumentation and control unit, which are finally connected to a data acquisition system.…”

Section: Experimental Rig Setupmentioning

confidence: 99%

“…1 was adopted. The method mitigates the aforementioned phenomenon of gum Arabic effects through surface functionalization of nanoparticles with surfactant and was developed by Muhammad et al [41].…”

Section: Enhancement Analysismentioning

confidence: 99%

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The effects of ejector adiabatic absorber on heat and mass transfer of binary nanofluid with heat transfer additives

Muhammad

Bhattacharyya

Endrino³

et al. 2021

emergent mater.

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This paper presents experimental results on the study of the effects of ejector adiabatic absorber on heat and mass transfer of binary nanofluid with heat transfer additives (2-ethyl-1-hexanol and gum Arabic). In this case, H2O/lithium bromide-alumina nanofluid was suggested due to a growing interest in absorption heat transfer working fluid for solar energy application. An experimental setup — ejector test rig — was designed to study the absorption, heat, and mass transfer rate as a result of refrigerant vapour mass flow entrained by the ejector adiabatic absorber. The study was carried out at different solution mass flowrate (0.051 to 0.17 kg/s) with three prepared sample solutions, which include pure LiBr solution, LiBr-Alumina nanofluid without heat transfer additives, and LiBr-Alumina nanofluid with heat transfer additives. The absorption rate, mass transfer coefficient, heat transfer rate, and heat transfer coefficient for the three samples were reported. On the other hand, the percentage enhancements for all the parameters — at a suitable flow rate of 0.085 kg/s — due to the addition of alumina without and with heat transfer additives were recorded. The absorption rate enhancements were 25% and 96%, the enhancement rates of mass transfer coefficient recorded were 20% and 82%, the heat transfer rate enhancements were 85% and 183%, and the heat transfer coefficient enhancements obtained were 72% and 156% with addition of alumina nanoparticles only and alumina nanoparticles with heat transfer additives respectively. Material mass balance analysis suggests that mass inflow in the ejector equals to the mass outflow from the ejector, indicating a complete absorption of the entrained refrigerant vapour beyond which falling film absorption can occur due to concentration. This article also presents experimental evidence of the capability of ejector as strong adiabatic absorber, heat, and mass transfer component, which were earlier reported using numerical models.

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Section: Sample Preparationmentioning

confidence: 99%

Section: Experimental Rig Setupmentioning

confidence: 99%