Energy, exergy and economic assessments of shell and tube condenser using hybrid nanofluid as coolant

Singh, Sumit Kumar; Sarkar, Jahar

doi:10.1016/j.icheatmasstransfer.2018.08.005

Cited by 64 publications

(19 citation statements)

References 23 publications

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“…Nano constituents

{Al}_{2} O_{3}

is symbolized by

“ 1 ”

and

Ti O_{2} /

normalO

“ 2 ”

. Hence, the overall volume fraction of hybrid (composite) nanofluid (

\emptyset)

is:

\emptyset = {normal∅}_{np 1} + {normal∅}_{np 2}

…”

Section: Methodsmentioning

confidence: 99%

“…The density and specific heat capacity of hybrid nanofluid have been determined by:

{italicρ}_{hnf} = {normal∅}_{np 1} \cdot {italicρ}_{np 1} + {normal∅}_{np 2} \cdot {italicρ}_{np 2} + true(1 - \emptyset true) {italicρ}_{bf}

{italicc}_{phnf} = {normal∅}_{np 1} \cdot {italicρ}_{np 1} \cdot {italicc}_{pnp 1} + {normal∅}_{np 2} \cdot {italicρ}_{np 2} \cdot {italicc}_{pnp 2} + true(1 - \emptyset true) {italicρ}_{bf} \cdot {italicc}_{pbf}

…”

Section: Methodsmentioning

confidence: 99%

“…These composite (hybrid) nanofluids gained attention among many researchers around the globe. Many works in hybrid nanofluids claimed that it will offer good thermal properties than that of nanofluids . Alumina nanoparticles and MWCNT is mixed in water and employed in grooved plate heat exchanger to determine the pressure drop characteristics and heat transfer rate and compared the results with

{Al}_{2} O_{3} goodbreakinfix/ H_{2} normalO

nanofluid at a same flow rate and found the improved performance of heat exchanger .…”

Section: Introductionmentioning

confidence: 99%

“…Many works in hybrid nanofluids claimed that it will offer good thermal properties than that of nanofluids. [30][31][32][33][34][35][36][37][38] Alumina nanoparticles and MWCNT is mixed in water and employed in grooved plate heat exchanger to determine the pressure drop characteristics and heat transfer rate and compared the results with Al O /H O 2 3 2 nanofluid at a same flow rate and found the improved performance of heat exchanger. 39 Allahyar et al 40 hybrid nanofluids in a flattened tube.…”

Section: Introductionmentioning

confidence: 99%

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Heat transfer enhancement using hybrid nanofluids in spiral plate heat exchangers

Returi

Konijeti

Dasore

2019

Heat Trans. Asian Res.

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A possible way to enhance the rate of heat transfer in the spiral plate heat exchanger (SPHE) is by employing hybrid nanofluids as its working medium. Hence, in the present work, effects of hybrid nanofluids on the thermal performance of SPHE has been investigated numerically. First, a countercurrent SPHE is designed and modeled. Later, simulation of SPHE has been carried out by employing conventional fluid (H2normalOnormal), nanofluids (Al2normalO3)/normalH2O,normalCnormalunormalO/normalH2O,normalTnormaliO2/normalH2O), and hybrid nanofluids (Al2normalO3+normalCnormalunormalO/normalH2O,Anormall2normalO3+normalTnormalinormalO2/normalH2O) to investigate the heat transfer rates. Finally, the performance of SPHE using hybrid nanofluid is compared with that of using water and nanofluids. The heat transfer augmentation of approximately 16%‐27% with hybrid nanofluids of overall 4% nanoparticles volume concentration and 10%‐16% with 2% nanoparticles volume concentration is observed when compared with that of pure water. Therefore, it can be inferred that the application of hybrid nanofluids in SPHE seems to be one of the promising solutions for augmentation of its thermal performance.

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“…Nano constituents

{Al}_{2} O_{3}

is symbolized by

“ 1 ”

and

Ti O_{2} /

normalO

“ 2 ”

. Hence, the overall volume fraction of hybrid (composite) nanofluid (

\emptyset)

is:

\emptyset = {normal∅}_{np 1} + {normal∅}_{np 2}

…”

Section: Methodsmentioning

confidence: 99%

“…The density and specific heat capacity of hybrid nanofluid have been determined by:

{italicρ}_{hnf} = {normal∅}_{np 1} \cdot {italicρ}_{np 1} + {normal∅}_{np 2} \cdot {italicρ}_{np 2} + true(1 - \emptyset true) {italicρ}_{bf}

{italicc}_{phnf} = {normal∅}_{np 1} \cdot {italicρ}_{np 1} \cdot {italicc}_{pnp 1} + {normal∅}_{np 2} \cdot {italicρ}_{np 2} \cdot {italicc}_{pnp 2} + true(1 - \emptyset true) {italicρ}_{bf} \cdot {italicc}_{pbf}

…”

Section: Methodsmentioning

confidence: 99%

{Al}_{2} O_{3} goodbreakinfix/ H_{2} normalO

nanofluid at a same flow rate and found the improved performance of heat exchanger .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Heat transfer enhancement using hybrid nanofluids in spiral plate heat exchangers

Returi

Konijeti

Dasore

2019

Heat Trans. Asian Res.

View full text Add to dashboard Cite

show abstract

“…Según Sing et al [21], las especificaciones del condensador de carcasa y tubos que se utilizaron fueron similares a las de un condensador industrial que fue usado para la evaluación del rendimiento de nanofluidos híbridos. Se utilizó una tubería de diámetro exterior de 22.2 mm, espesor y longitud de tubería de 0.7112 y 15000 mm, respectivamente.…”

Section: Revisión Del Estado Del Arteunclassified

Análisis del rendimiento termodinámico de una bomba de calor asistida por energía solar utilizando un condensador con recirculación

Quitiaquez¹,

Simbaña²,

Caizatoa³

et al. 2020

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La presente investigación estudia una bomba de calor de expansión directa asistida por energía solar con un sistema de recirculación de agua. Los intercambiadores de calor utilizados fueron un colector/evaporador de cobre de 0.75 m2 y un condensador en forma de serpentín construido en tubería de cobre de 2.49 m de longitud y 8 espiras, inmerso en un tanque con 5 litros de agua. Para la recirculación del agua, se utilizó una bomba centrífuga de 20 L/min a 110 V. El compresor instalado es de velocidad variable a 12-24 V DC que utiliza R600a como fluido de trabajo. El dispositivo de expansión utilizado fue una válvula electrónica. Las pruebas experimentales se desarrollaron para una configuración con recirculación y sin recirculación de agua, considerando condiciones climáticas similares. De esta manera, se puede establecer cuál es la configuración que brinda un mayor rendimiento en el sistema. Para la obtención de datos de radiación solar, velocidad del viento y temperatura ambiente se empleó una estación meteorológica WS-1201. Este sistema proporcionó agua caliente sanitaria, a 45 °C en un tiempo entre 40 a 50 minutos dependiendo de las condiciones climáticas. El COP máximo del sistema con recirculación fue 9.83 un 8.04 % mayor que el sistema sin recirculación. El tiempo de calentamiento tardó 10 minutos menos para el sistema con recirculación, 16.67 % menos que al utilizar el sistema sin recirculación.

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Nanofluid‐Cooled Microchannel‐Integrated Metal Foam/Phase Change Material Composite‐Based Li‐Ion Battery Pack Design

Kumar,

Sarkar,

Mondal

2024

Energy Tech

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Hybrid cooling has emerged recently for lithium‐ion batteries, and proper pack design is essential for safe operation. Hence, this research explores a novel approach using wavy microchannels in phase change material (PCM) + aluminum foam packs for cylindrical batteries. A comparison between active cooling (microchannels in aluminum block) and hybrid cooling (microchannels in PCM block and foam‐PCM block) employing MXene + Al2O3/water hybrid nanofluid is made, followed by the impact of the number of microchannels and foam porosity on the cooling effectiveness. Findings indicate that the foam‐PCM yields significantly lower and (309.86 and 2.55 K, respectively) with seven microchannels at 3C discharge with porosity of 85% and pore density of 50 PPI. This also shows a better temperature distribution than other considered blocks. With the increase in porosity from 75% to 95%, there is an adverse effect on and within the cells, which increases from 309.75 to 310.24 K and 2.16 to 3.62 K, respectively. With the increase in microchannels from three to nine, the decreases from 310.04 to 309.72 K, while the increases from 2.05 to 2.85 K. The proposed pack (having moderate weight) yields superior thermal performance, and the enhanced battery life can justify the increased cost.

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Energy, exergy and economic assessments of shell and tube condenser using hybrid nanofluid as coolant

Cited by 64 publications

References 23 publications

Heat transfer enhancement using hybrid nanofluids in spiral plate heat exchangers

Heat transfer enhancement using hybrid nanofluids in spiral plate heat exchangers

Análisis del rendimiento termodinámico de una bomba de calor asistida por energía solar utilizando un condensador con recirculación

Nanofluid‐Cooled Microchannel‐Integrated Metal Foam/Phase Change Material Composite‐Based Li‐Ion Battery Pack Design

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