Energy analysis of a mixed-mode corrugated aluminium alloy (AlMn1Cu) plate solar air heater

Dutta, Pooja; Dutta, Parama; Kalita, Paragmoni; Goswami, Priyom; Choudhury, Pradyumna Kumar

doi:10.1016/j.matpr.2021.07.156

Cited by 12 publications

(8 citation statements)

References 20 publications

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“…Here the research concerned a non-concentrating type of solar collector used for drying purposes. Some of the literature reviewed is dedicated to evaluating the pros and cons of their proposed designs (e.g., Karim and Hawlader, 2006;Koca et al, 2008;Naphon and Kornkumjayrit, 2008;Natarajan and Sathish, 2009;El-Sebaii and Al-Snani, 2010;Hans et al, 2010;Krishnananth and Kalidasa Murugavel, 2013;Nowzari et al, 2014;Chaichan et al, 2016;Dissa et al, 2016;Sharma and Kalamkar, 2017;Farajzadeh et al, 2018;Ural, 2019;Ammar et al, 2020;Das et al, 2021;Dutta et al, 2021), and a similar comparative approach is adopted here also.…”

Section: Introductionmentioning

confidence: 99%

“…To increase the heat transfer along the air passage, Dutta et al (2021) used a corrugated aluminum alloy plate to perform the energy analysis for forced as well as free convection systems. It was noticed that an increase in the mass flow of 33% could enhance the thermal efficiency of the system by 27%, although the temperature of the working fluid dropped considerably at the outlet of the collector.…”

Section: Introductionmentioning

confidence: 99%

“…The evaluation of the system did not focus much on the qualitative aspects of the solar heater, with the parameters discussed mainly concerned with the material engineering of the solar collector. The thermal-fluid properties of the working medium were excluded (Dutta et al, 2021). Ural (2019) developed a textile-based solar air collector (TB-SAC) and reported that the exergy of the proposed design increased by 32% when compared with a flat plate solar air collector.…”

Section: Introductionmentioning

confidence: 99%

“…Manufacturing and material science provided the foundation for much of the work covered in the literature review (e.g., Karim and Hawlader, 2006;Koca et al, 2008;Naphon and Kornkumjayrit, 2008;Natarajan and Sathish, 2009;El-Sebaii and Al-Snani, 2010;Hans et al, 2010;Krishnananth and Kalidasa Murugavel, 2013;Nowzari et al, 2014;Chaichan et al, 2016;Dissa et al, 2016;Sharma and Kalamkar, 2017;Farajzadeh et al, 2018;Ural, 2019;Ammar et al, 2020;Das et al, 2021;Dutta et al, 2021). The aspect of medium properties was discussed sporadically in some of the studies (e.g., Hans et al, 2010;Kumar et al, 2017;Dhaundiyal and Atsu, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Rheological Behavior of Air in the Two-Pass Solar Collector

Dhaundiyal

2022

Front. Energy Res.

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This study pivoted on the flow behavior of air streams across solar air collectors provided with wooden baffles under the absorber plates. The two-pass system was used for both flat and finned surfaces. The von Kármán momentum integral and Blasius equations were solved with the help of PDPE and ODE45 techniques. The solution was assumed to be a part of the initial value problem (IVP). The energy analysis of both solar air collectors was carried out using the Hottel–Whillier–Bliss equation (HWB) equation. The Sankey diagram was used for energy distribution across the solar collectors. The gray box modeling approach was adopted to comprehend the airflow behavior across the channel. The objective of this study is to examine the intrinsic behavior of the proposed design. The displacement of boundary to compensate for the momentum of air stream (θt) decreased by 31.25%–62.50% with an increase in mass flow rate (m)˙of 24.69%–49.38% for the flat plate collector (FPC). Similarly, the shear stress posed by the absorber plate (τw) dropped by 15.89%–37.20% with the augmentation of the mass flow rate. The momentum thickness for the flat plate with triangular fin (FPTF) increased relatively by 31.25%, compared to FPC at 8.10 g·s−1. The estimated value of collector efficiency (ηI) FPTF soared up by 4%–11.51% when it was juxtaposed against the corresponding values derived for FPC. The wall shear stress near the absorber plate followed that of a second-order Gaussian model. It was noticed in this study that the addition of the fin slowed down the shear effect and the momentum defect of airstream at the same mass flow rate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rheological Behavior of Air in the Two-Pass Solar Collector

Dhaundiyal

2022

Front. Energy Res.

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“…However, the temperature of the air at the outlet was significantly reduced. The analysis was merely based on a quantitative approach to examine the solar air heater without incorporating the simultaneous effect of pressure and temperature across the parallel plate, despite using a mixed-mode system [1]. Another work involved the thermodynamic study of textile-based solar air collectors (TB-SAC), and it was seen that the exergy of the system was increased by 32% as compared to the flat plate solar air collector.…”

Section: Introductionmentioning

confidence: 99%

The Stack Effect on the Thermal-Fluid Behaviour of a Solar Collector

Dhaundiyal

Gebremicheal

2022

Energies

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The article investigates the thermal behaviour of a solar collector retrofitted with a natural draught unit. The objective of this work is to draw a comparative line between a system that is equipped with a circular vertical channel and the conventional one. The effectiveness of the solar heating system and how to further improve the prevailing system are examined in this study. The flat plate solar collector was used to assess the dynamics of the system. The Hottel–Whillier–Bliss equation was used to obtain the useful heat gain rate. The instantaneous collector efficiency was reduced by 22.84%. The net heat loss encountered with natural draught was augmented by 10.89%. The net pressure drop along the length of the collector was increased when a solar collector related to the circular chimney. The stagnant temperature of the collector with the natural draught was decreased by 3.20%. The heat loss to the surrounding was computed to be 33.94% of the net energy received by a solar collector connected with the circular stack. The Fanning friction factor for airflow was reduced in the system equipped with natural draught. The static pressure was marginally dropped at the inlet, whereas it was steeply increased at the outlet of the solar collector. The static pressure would be the same for both systems at collector length l = 0.84 m. The inference can be deducted from the comparative analysis that the air stream flow behind the collector plate and could provide better prospects for a collector unit equipped with natural draught at the exhaust end of the solar dryer.

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