Experimental thermal performance analysis of finned tube-phase change material based double pass solar air heater

Sajawal, Muhammad; Rehman, Tauseef-ur; Ali, Hafız Muhammad; Sajjad, Uzair; Raza, Ali; Bhatti, M. S.

doi:10.1016/j.csite.2019.100543

Cited by 150 publications

(25 citation statements)

References 41 publications

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“…At the same time, it is used in the microchannel field to enhance the heat transfer coefficient and combat fouling [36][37][38][39][40][41][42][43][44][45][46][47]. This could be done through influence of the operating parameters inside the microchannels [48]. At the same time, this research could be a hand for different fields of heat transfer where it could be used in plastic heat exchangers, frosting suppressing, or even replace some of current costly jet cooling [49][50][51][52][53].…”

Section: Background and Introductionmentioning

confidence: 99%

An experimental study on microchannel heat sink via different manifold arrangements

et al. 2019

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The current experimental study performed the overall performance of the microchannel heat sink using the heat transfer coefficient, Nusselt number, and pressure drop for three novel manifold configurations. These selected manifolds have a rectangular (R), rectangle with semicircular (RSC) and divergent-convergent (DC) shapes for inlet and outlet. The heat transfer coefficient for all three types of microchannel was reported for the Reynolds number range of 342-857. The experiments were tested at four different heat inputs ranges between 50-125 W. R-type microchannel heat sink showed the worst performance, while the performance of DC-type microchannel heat sinks was the best. At Re of 342, the lowest Nusselt number was observed to be 2.8 at lower Reynolds number 342 for R-type manifold. RSC manifolds MCHS seems to be a better choice compared to R-type and DC-type MCHS with respect to pressure drop and Nusselt number. Compared to R-type microchannel heat sink, 24-32% and 7-10% augmentation in heat transfer coefficients were reported for DC-type and RSC-type microchannel heat sinks, respectively. Based on the released experimental results, it can be stated that DC-type microchannel heat sink is more beneficial in terms of heat transfer enhancement.

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Section: Background and Introductionmentioning

confidence: 99%

An experimental study on microchannel heat sink via different manifold arrangements

et al. 2019

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“…Therefore, several heat-transfer enhancement techniques have been introduced and applied to improve the thermal response of PCM-based TES systems [ 24 , 25 ]. These techniques include incorporating fins and extended surfaces [ 26 , 27 , 28 , 29 ], modifying the geometry [ 30 , 31 , 32 ], embedding porous structures [ 33 , 34 , 35 , 36 , 37 ], composing thermally high conducting particles [ 38 , 39 , 40 , 41 ], using multiple PCMs [ 42 , 43 ], nano-encapsulation [ 44 , 45 , 46 ], and using the combinations of different methods [ 43 , 47 ]. Among them, incorporating with fins is a particularly attractive option from both economic and engineering perspectives.…”

Section: Introductionmentioning

confidence: 99%

Phase Change Process in a Zigzag Plate Latent Heat Storage System during Melting and Solidification

et al. 2020

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Applying a well-performing heat exchanger is an efficient way to fortify the relatively low thermal response of phase-change materials (PCMs), which have broad application prospects in the fields of thermal management and energy storage. In this study, an improved PCM melting and solidification in corrugated (zigzag) plate heat exchanger are numerically examined compared with smooth (flat) plate heat exchanger in both horizontal and vertical positions. The effects of the channel width (0.5 W, W, and 2 W) and the airflow temperature (318 K, 323 K, and 328 K) are exclusively studied and reported. The results reveal the much better performance of the horizontal corrugated configuration compared with the smooth channel during both melting and solidification modes. It is found that the melting rate is about 8% faster, and the average temperature is 4 K higher in the corrugated region compared with the smooth region because of the large heat-exchange surface area, which facilitates higher rates of heat transfer into the PCM channel. In addition to the higher performance, a more compact unit can be achieved using the corrugated system. Moreover, applying the half-width PCM channel accelerates the melting rate by eight times compared to the double-width channel. Meanwhile, applying thicker channels provides faster solidification rates. The melting rate is proportional to the airflow temperature. The PCM melts within 274 s when the airflow temperature is 328 K. However, the melting time increases to 460 s for the airflow temperature of 308 K. Moreover, the PCM solidifies in 250 s and 405 s in the cases of 318 K and 328 K airflow temperatures, respectively.

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“…7 Finned heat sink is permanently used to enhance the rate of heat transfer by expanding the surface area in contact to the fluid. 8,9 Finned shell and tube is also utilized with water to enhance the natural convection heat transfer of an ice storage unit. 10 In commercial heat sink equipment, heat is conducted through a solid material that separates two fluids having different temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…There are a few common heat sink types, such as finned, bonded, skived, stamped, and forged 7 . Finned heat sink is permanently used to enhance the rate of heat transfer by expanding the surface area in contact to the fluid 8,9 . Finned shell and tube is also utilized with water to enhance the natural convection heat transfer of an ice storage unit 10 .…”

Section: Introductionmentioning

confidence: 99%

Thermal, environmental, and cost analysis of effective solar portable vaccine refrigerator by COMSOL Multiphysics

Al‐Madhhachi

Alnajideen

2020

Heat Trans

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A thermal, environmental, and cost analysis of an effective solar portable vaccine refrigerator is presented. Combining Peltier module with appropriate finned heat sink, choosing advanced software for thermal analysis, evaluating the environmental impacts of the combination, and comparing with other refrigerators are the key objectives of the present research. The Peltier module and the finned heat sink are professionally designed to enhance the thermal performance of the solar portable vaccine refrigerator. A competent solar panel is proposed to power the Peltier module for clean thermal energy. A set of equations are applied to calculate the overall surface efficiency and the total heat dissipation out of the refrigerator. COMSOL Multiphysics is employed to compute the temperature gradient and the heat flux of the Peltier module with the finned heat sink at steady-state process. The thermal results show that the maximum overall surface efficiency is 78% with one Peltier module and 10 fins. The environmental results show that the values of the carbon footprint and total energy consumption of the solar portable vaccine refrigerator are reasonable according to the sustainability assessment methodology. The results also show that the manufacturing cost of the solar portable vaccine refrigerator is affordable as compared to others.

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Experimental thermal performance analysis of finned tube-phase change material based double pass solar air heater

Cited by 150 publications

References 41 publications

An experimental study on microchannel heat sink via different manifold arrangements

An experimental study on microchannel heat sink via different manifold arrangements

Phase Change Process in a Zigzag Plate Latent Heat Storage System during Melting and Solidification

Thermal, environmental, and cost analysis of effective solar portable vaccine refrigerator by COMSOL Multiphysics

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