Heat transfer enhancement using hybrid nanofluids in spiral plate heat exchangers

Returi, Madhuri Charulatha; Konijeti, Ramakrishna; Dasore, Abhishek

doi:10.1002/htj.21534

Cited by 90 publications

(12 citation statements)

References 39 publications

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“…Multiple studies investigate the use of nanofluids in plate heat exchangers [33]. The effects of using hybrid nanofluids on plate HX performance were numerically investigated [266] [267].…”

Section: Plate Heat Exchangersmentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

239

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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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“…Multiple studies investigate the use of nanofluids in plate heat exchangers [33]. The effects of using hybrid nanofluids on plate HX performance were numerically investigated [266] [267].…”

Section: Plate Heat Exchangersmentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

239

View full text Add to dashboard Cite

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“…The concentration of PG-W mixture is 10% (24) where Nu 90 is the Nu when the inclination angle of SWHE is 90°, α is the inclination angle, and d and e are the constants.…”

Section: The Fitting Correlation Equationsmentioning

confidence: 99%

“…The formula for calculating the average logarithmic temperature difference is as follows 23,24

∆ T_{normalm} = \frac{∆ T_{normalmax} - ∆ T_{normalmin}}{\ln true(\frac{∆ T_{\max}}{∆ T_{\min}} true)},

∆ T_{normalmax} = T_{hin} - T_{cout},

∆ T_{normalmin} = T_{hout} - T_{cin} .

…”

Section: Experimental Design and Setupmentioning

confidence: 99%

Investigation on the heat transfer characteristics of propylene glycol–water mixture in the shell side of a spiral‐wound heat exchanger

Jiang

Sun

et al. 2020

Heat Trans

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The heat transfer characteristics of propylene glycol-water (PG-W) mixture (10%, 20%, and 30% propylene glycol) on the shell side of a spiral-wound heat exchanger (SWHE) were investigated experimentally. Among the SWHE selected, there are 18 twined tubes with a diameter of 8 mm. PG-W mixture is on the shell side and water is on the tube side. The results show that the heat transfer coefficient of PG-W mixture flowing downwards is higher than upwards under countercurrent conditions. The heat transfer coefficient decreases with the increasing of concentration of PG-W mixture. When the inclination angle of the SWHE is 90°, the heat transfer coefficient of PG-W mixture is the largest; and when the inclination angle is less than 90°, the heat transfer coefficient decreases with the decrease of inclination angle. The inclination angle has a great effect on the heat transfer coefficient at a high concentration. The fitting correlation equations between Nu, Re, Pr, and inclination angles of SWHE are established.

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“…At present, the research of hybrid nanofluids mainly focuses on the thermal conductivity, viscosity, density and specific heat of the working fluid [17][18][19]. Some scholars have also conducted heat transfer experiments on hybrid nanofluids [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Research on heat transfer characteristics of flow in tube of water-based nanofluids

et al. 2021

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In this paper, the characteristics of forced convection heat transfer in water-based nanofluids are studied by means of experimental and theoretical analysis. Nusselt number of nanofluids were calculated by changing the volume fraction and the type of nanoparticles in the tube. The effects of Reynolds number and the volume fraction of nanoparticles on the forced convection heat transfer were studied. An exergy analytical model was established for the laminar heat transfer of nanofluid under the condition of constant heat flow. At the same Reynolds condition, the friction entropy production of the flow and heat transfer process in the tube increases with the addition of nanoparticles, and the heat transfer entropy production decreases at the same time. However, the magnitude of friction entropy production is only 10-6, which is negligible compared with the heat transfer entropy production. Therefore, in general, the loss of nanofluids is lower than that of pure water; for nanofluids, the exergy loss of hybrid nanofluid is lower than that of single nanofluid at the same volume fraction.

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Heat transfer enhancement using hybrid nanofluids in spiral plate heat exchangers

Cited by 90 publications

References 39 publications

An updated review of nanofluids in various heat transfer devices

An updated review of nanofluids in various heat transfer devices

Investigation on the heat transfer characteristics of propylene glycol–water mixture in the shell side of a spiral‐wound heat exchanger

Research on heat transfer characteristics of flow in tube of water-based nanofluids

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