CFD and experimental investigation of flat plate solar water heating system under steady state condition

Gunjo, Dawit Gudeta; Mahanta, Pinakeswar; Robi, P. S.

doi:10.1016/j.renene.2016.12.041

Cited by 87 publications

(31 citation statements)

References 25 publications

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“…There are not a lot of investigations about cross sections of the solar collector, through which the fluid flows, the selected sections were chosen according to a thermal analysis. CFD model proposed in the present investigation was validated with the simulation performed by Gunjo, Mahanta & Robi (2017) in their research entitled "CFD and experimental investigation of flat solar water heating system under steady state condition". Figure 2 shows the used process to carry out the presented investigation.…”

Section: Introductionmentioning

confidence: 91%

“…• The heat loss from the bottom of the plate and the tube is by convection, which depends upon wind speed A constant heat flux (solar radiation) is applied to the upper part of the plate, whilst the lower part is established as a convective surface where the convective heat transfer coefficient is obtained by (Gunjo et al, 2017): 6Where:…”

Section: Simulation Conditionsmentioning

confidence: 99%

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CFD Analysis of a solar flat plate collector with different cross sections

2020

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Low and medium solar heating systems used for domestic and industrial applications, such as water and space heating, usually utilize solar flat plate collectors in order to absorb solar thermal energy converting it into heat and then transferring the heat to a fluid (usually water or air) that flows through it. The aim of this study is to evaluate the solar flat plate collector’s efficiency and the fluid behavior inside the pipeline with three different cross sections, whose hydraulic diameters are 10, 5.12 and 6.16 mm, by using ANSYS Fluent. The results obtained from the Computational Fluid Dynamics (CFD) tool showed that the collector with the Type I cross section reached temperatures up to 330 K at the pipe outlet obtaining an efficiency of 68 %, higher than those of Types II and III, whose efficiencies were 51 % and 60 %, respectively. Type I cross section also presented the lowest values in both speed and pressure drop, these being 0.266 m/s and 108.3 Pa, respectively.

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Section: Introductionmentioning

confidence: 91%

Section: Simulation Conditionsmentioning

confidence: 99%

CFD Analysis of a solar flat plate collector with different cross sections

2020

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“…The CFD approach with experimental validation has also been applied to concrete unglazed collectors [61], copper absorber glazed collectors [62] and aluminum absorbers for unglazed collectors [63]. CFD without experimental validation is also described for aluminum sandwich panels [64] and for unglazed solar collectors [65].…”

Section: Theoretical Modelmentioning

confidence: 99%

CFD model-based analysis and experimental assessment of key design parameters for an integrated unglazed metallic thermal collector façade

et al. 2020

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“…A pump is used to circulate the HTF inside the system. The general specifications of the collector are taken from [16,17] and are summarized in Table 1. The analysis is done based on weather data for Aydın, Turkey.…”

Section: Description Of the Problemmentioning

confidence: 99%

03Performance Assessment of Flat Plate Solar Collector Using Different Nanofluids

Asker

Gadanya

2019

Hittite J. Sci. Eng.

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T he need for renewable energy is gradually been recognized and accepted globally due to the threats the world is facing such as the increase in world population, climate change, fossil fuels price inflation and high cost of electricity. These threats have led to the discovery and development of new, clean and abundant alternative sources of energy called renewable energies. Among these alternative sources of energy includes solar, wind and hydropower.Solar energy is a free, abundant and natural heat from the sun that is harnessed by solar collection method. It is the common alternative source of energy used today. It can be utilized directly in two forms: either to generate electricity by exposing a photovoltaic material to sunlight or to generate heat for heating or cooling system. For the heating system, the sun's radiation in the form of heat energy is transferred to a working fluid such as the air, water or oil. Use of solar energy for water heating is the most common and easiest application with the use of a solar collector with a flat plate been the most productive type [1]. Enhancing the heat transfer, by maximizing solar absorption and reducing the losses leads to improved efficiency and better performance. In addition, the use of nanofluids is another way for enhancing the performance of the collector. Sharafeldin et al.[2] conducted an experiment to study the effect of using CeO 2 with three different volume fractions (0.0167%,

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CFD and experimental investigation of flat plate solar water heating system under steady state condition

Cited by 87 publications

References 25 publications

CFD Analysis of a solar flat plate collector with different cross sections

CFD Analysis of a solar flat plate collector with different cross sections

CFD model-based analysis and experimental assessment of key design parameters for an integrated unglazed metallic thermal collector façade

03Performance Assessment of Flat Plate Solar Collector Using Different Nanofluids

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