Experimental investigation on performance of ammonia absorption refrigeration system with TiO2 nanofluid

Jiang, Weixue; Li, Shuhong; Yang, Linjun; Du, Kai

doi:10.1016/j.ijrefrig.2018.09.032

Cited by 74 publications

(16 citation statements)

References 33 publications

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“…Jiang et al [377] investigated the effect of 0.5% TiO 2 and 0.02% SDBS on the COP of ammonia absorption refrigeration system (AARS). The experimental set-up of the test rig used in their investigations is illustrated in Fig.…”

Section: Nanofluids In Refrigerationmentioning

confidence: 99%

“…While Fig. 22 The COP of AARS with different mass fractions of TiO 2 [377] many studies settle for regression-based correlation models to predict thermophysical properties, intelligent computing has also been widely used in the predictions. It is the opinion of the authors that because of the almost infinite variables that affect the thermophysical behaviour of nanofluids, intelligent computing would be the most accurate predicting the thermophysical behaviour of nanofluids.…”

Section: Challenges and Future Prospectsmentioning

confidence: 99%

See 1 more Smart Citation

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

243

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The field of nanofluids has received interesting attention since the concept of dispersing nanoscaled particles into a fluid was first introduced in the later part of the twentieth century. This is evident from the increased number of studies related to nanofluids published annually. The increasing attention on nanofluids is primarily due to their enhanced thermophysical properties and their ability to be incorporated into a wide range of thermal applications ranging from enhancing the effectiveness of heat exchangers used in industries to solar energy harvesting for renewable energy production. Owing to the increasing number of studies relating to nanofluids, there is a need for a holistic review of the progress and steps taken in 2019 concerning their application in heat transfer devices. This review takes a retrospective look at the year 2019 by reviewing the progress made in the area of nanofluids preparation and the applications of nanofluids in various heat transfer devices such as solar collectors, heat exchangers, refrigeration systems, radiators, thermal storage systems and electronic cooling. This review aims to update readers on recent progress while also highlighting the challenges and future of nanofluids as the next-generation heat transfer fluids. Finally, a conclusion on the merits and demerits of nanofluids is presented along with recommendations for future studies that would mobilise the rapid commercialisation of nanofluids.

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Section: Nanofluids In Refrigerationmentioning

confidence: 99%

Section: Challenges and Future Prospectsmentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

243

View full text Add to dashboard Cite

show abstract

“…The maximum COP occurred for Al 2 O 3 ‐H 2 O‐based nanofluids compared with (0.3 wt% Al 2 O 3 + 0.1 wt% TiO 2 )‐H 2 O based hybrid nanofluids. Jiang et al 89 performed an experimental investigation on the performance of an ammonia absorption refrigeration system (AARS) with TiO 2 nanofluid. They used three different mass fractions of TiO 2 nanoparticles and 0.02 wt% of SDBS surfactant.…”

Section: Nanofluid In a Refrigeration Systemmentioning

confidence: 99%

A review on the application of the nanofluids

Dey

Sahu

2020

Heat Trans

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Nanofluid has become popular with the advancement in nanotechnology. Nanofluid has comparatively better stability than the microfluid because here much smaller‐sized particles (nanometer size) are suspended in the base fluid. It has improved thermophysical properties and convective heat transfer coefficient than the base fluid alone. That is why researchers have implemented this novel heat transfer fluid in versatile fields. These are solar collectors, solar thermal energy storage, electronics cooling, cooling and heating, heat pipes, automobile radiator, refrigeration system, natural convection, quenching, and many other applications. These varied applications indicate that in imminent future nanofluid will play a major role in these fields. Though all these trials are at present at academic research level, however, with the advancement in nanotechnology, surface science, colloidal chemistry, and so forth this nanofluid will definitely play a major role in heat transfer in the coming days.

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“…Using the total dissolved solids (TDS) and the temperature of the heating area, they concluded that SiO 2 was the best of the three nanoparticles tested due to their lower deposits and higher area temperature. In studies related to absorption refrigeration systems, Jiang et al 13 , experimentally investigated the effect of TiO 2 nanoparticles on the coefficient of performance (COP) of ammonia-water absorption refrigeration systems. By varying parameters like nanoparticle volume concentration (0.1–0.5%), evaporator temperature (− 18 to − 10 C) and generator temperature (22–33 C), the COP of the system was found to be enhanced by 27% at 0.5% volume concentration of nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Parametric investigation of a chilled water district cooling unit using mono and hybrid nanofluids

Okonkwo

Al‐Ansari

2021

Sci Rep

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This study presents a novel parametric investigation into the performance of a district cooling system using mono (Al2O3 and TiO2) and hybrid (Al2O3–TiO2) nanoparticles in the base fluids of water and ethylene–glycol water (EG-water) at a 20:80 ratio. The study analyses the effect of variables such as secondary fluid flow rate, evaporator and inlet temperatures, nanoparticle concentration, and air flowrate on the COP, total electrical energy consumption, and design of the district cooling unit. The analysis is performed with a thermal model developed and validated using operations data obtained from the McQuay chilled water HVAC unit operating in one of the facility plants at the Education City campus. The results of the study show that the use of nanofluids increased the overall heat transfer coefficient in the system by 6.6% when using Al2O3–TiO2/water nanofluids. The use of nanofluids in the evaporator also led to an average reduction of 23.3% in the total work input to the system and improved the COP of the system by 21.8%, 20.8% and 21.6% for Al2O3–TiO2/water, Al2O3/water, and TiO2/water nanofluids, respectively. Finally, an enhancement of 21.6% in COP was recorded for Al2O3–TiO2/EG-water nanofluids at a 5% nanoparticle volume concentration.

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Experimental investigation on performance of ammonia absorption refrigeration system with TiO2 nanofluid

Cited by 74 publications

References 33 publications

An updated review of nanofluids in various heat transfer devices

An updated review of nanofluids in various heat transfer devices

A review on the application of the nanofluids

Parametric investigation of a chilled water district cooling unit using mono and hybrid nanofluids

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