A comparative study on the performance of liquid flat-plate solar collector with a new V-corrugated absorber

Fan, Man; You, Shijun; Gao, Xuezhi; Zhang, Huan; Li, Bojia; Zheng, Wandong; Sun, Leizhai; Zhou, Tingting

doi:10.1016/j.enconman.2019.01.044

Cited by 69 publications

(13 citation statements)

References 33 publications

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“…Fan et al [38] developed a new type of V-corrugated absorber with multichannel (VFPSCT) and compared it with sheet and tube flat plat collector (TFPSC). The result showed that the thermal efficiency of VFPSCT was 69.1%, whereas TFPSC achieved a maximum thermal efficiency of 58.6%.…”

Section: Enhancement Devicesmentioning

confidence: 99%

Thermal Performance Enhancement in Flat Plate Solar Collector Solar Water Heater: A Review

et al. 2020

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Various studies to improve the thermal performance of flat plate solar collector (FPSC) solar water heater have been conducted, and more are currently in progress. This study aims to review existing methods on thermal performance enhancement for FPSC and discuss on heat-transfer enhancement using vibration and its potential application for FPSC. Ten methods for improving thermal performance are identified, which include applications of nanofluids, absorber coatings, phase change materials (PCM), thermal performance enhancers, FPSC design modifications, polymer materials, heat loss reduction, mini and micro channel and heat-transfer enhancement using vibration. An examination of heat-transfer enhancement using vibration in low frequency ranges for an evacuated-tube solar collector (ETSC) solar water heater system showed that it can potentially achieve heat-transfer enhancement of up to 78%. Nevertheless, there is still a lack of research on the applications of heat-transfer enhancement using vibration on FPSC to date.

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Section: Enhancement Devicesmentioning

confidence: 99%

Thermal Performance Enhancement in Flat Plate Solar Collector Solar Water Heater: A Review

et al. 2020

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“…The pressure loss and the power consumption of the pump in TFPC were seen to be 4.1 times higher than that obtained for VFPC. The average exergy efficiency of VFPC was seen to increase by 15% compared to TFPC (Fan et al, 2019). Kumar et al (2017) reported that the application of a discretized broken V-pattern baffle increased the Nusselt number and friction factor up to 4.47 and 4.59 times, respectively, compared to the smooth surface.…”

Section: Introductionmentioning

confidence: 99%

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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“…[1][2][3] Solar energy represents one of the most remarkable sustainable energy sources and it has attracted many works to improve the thermal efficiency of the plants and to minimize fossil fuel consumption and carbon-dioxide emissions. 4 Moreover, the solar systems have large possibility in transforming the solar energy for generating electricity and heating, where the working fluid can be either gas or liquid to collect the solar radiation and then convert it to heat. Solar air heater (SAH) model considers a simple conventional system which is utilized in several thermal applications with moderate temperature for example, drying applications and power generation.…”

Section: Introductionmentioning

confidence: 99%

“…The global warming due carbon dioxide emissions is increasing and leads to grow the energy crisis which is considered among the most important problems that have prompted many countries to search for alternative energy sources 1‐3 . Solar energy represents one of the most remarkable sustainable energy sources and it has attracted many works to improve the thermal efficiency of the plants and to minimize fossil fuel consumption and carbon‐dioxide emissions 4 . Moreover, the solar systems have large possibility in transforming the solar energy for generating electricity and heating, where the working fluid can be either gas or liquid to collect the solar radiation and then convert it to heat.…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of solar air heater using a new model of V‐corrugated absorber plate having perforations jets

Maher

Salih

2022

Intl J of Energy Research

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Summary An experimental investigation on the performance of a solar air heater (SAH) system has been performed using a new model of v‐corrugated absorber plate having perforations jets. The effectiveness of new model has been compared with the conventional v‐corrugated absorber plate under identical operating conditions to display the effectiveness of new model. The new collector has been referred to Model‐1, whereas the conventional model has been referred to Model‐2. The experimentations have been conducted in December 2020. The results demonstrate that the performance of Model‐1 is considerably higher than Model‐2 by 9%, 11%, and 11.5% for the air mass flowrates 0.01, 0.015, and 0.02 kg/s, respectively. As mass flowrate is increased, the performances of both models have increased, where the highest efficiencies of Model‐1 and Model‐2 have been found 84.5% and 73%, respectively. A substantial difference in temperature has been found in Model‐1 as compared to the rest model. Regardless of the air velocity values, the maximum outlet temperatures have been found in Model‐1, whereas the peak plate temperatures have been observed in Model‐2. The improvement in the performance of Model‐1 confirms that the utilize of perforations jets v‐corrugated absorber plate has an extreme action on the rate of heat transfer.

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A comparative study on the performance of liquid flat-plate solar collector with a new V-corrugated absorber

Cited by 69 publications

References 33 publications

Thermal Performance Enhancement in Flat Plate Solar Collector Solar Water Heater: A Review

Thermal Performance Enhancement in Flat Plate Solar Collector Solar Water Heater: A Review

Rheological Behavior of Air in the Two-Pass Solar Collector

Improving the performance of solar air heater using a new model of V‐corrugated absorber plate having perforations jets

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