Performance evaluation of solar flat plate collector using different working fluids through computational fluid dynamics

Unar, Imran Nazir; Maitlo, Ghulamullah; Ahmed, Shoaib; Ali, Syed Saad Azhar; Memon, Abdul Qayoom; Kandhro, Ghulam Abbas; Jatoi, Abdul Sattar

doi:10.1007/s42452-020-2005-z

Cited by 13 publications

(4 citation statements)

References 51 publications

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“…There are not many published research results on the use of mPCMS in flat liquid collectors. Most papers here describe the results of computer modeling of heat transfer [26][27][28][29][30][31][32]. The presented simulation results clearly show that the use of mPCM slurry as a working fluid in flat solar collectors may increase their efficiency from several to several dozen percent.…”

Section: The Current State Of Knowledgementioning

confidence: 91%

Experimental Studies of the Effect of Microencapsulated PCM Slurry on the Efficiency of a Liquid Solar Collector

2022

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A phase change material (PCM) is used as a substance filling in a heat store, due to the possibility of accumulating a significant amount of latent heat—the heat of phase transformation. Knowledge about the practical use of the working fluid, with the addition of a phase change substance, in heat exchange systems is limited The paper presents the results of preliminary research aimed at determining the possibility of using microencapsulated phase change material slurry (mPCM) as a working fluid in installations with a flat liquid solar collector, and the potential benefits as a result. The following were used as the working fluid during the tests: water (reference liquid), and a slurry of microencapsulated PCM. The mass fraction of mPCM in the working liquids is 4.3% and 8.6%, respectively. The research was carried out in laboratory conditions, in the range of radiation intensity G = 270–880 W/m2. The mass flux of each of the three working fluids in the collector is 30 kg/h, 40, kg/h, 60 kg/h, and 80 kg/h. Two main advantages of using mPCM as an additive to the working liquid are found: 1. in the entire range of thermal radiation intensity, the increase in the thermal efficiency of the collector fed with slurries is 4% with 4.3% mPCM in the slurry, and 6% with 8.6% mPCM in the slurry (for = 80 kg/h); 2. the slurry is characterized by a lower temperature at the outlet from the collector as compared to the water with the same thermal and flow parameters, which reduces heat losses to the environment both from the collector and other elements of the installation, as a result of excessive heating of the working liquid.

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Section: The Current State Of Knowledgementioning

confidence: 91%

Experimental Studies of the Effect of Microencapsulated PCM Slurry on the Efficiency of a Liquid Solar Collector

2022

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“…Solar ray tracing was used to calculate the solar load and solar energy intensity. Water proved to be more efficient in the model due to its high density and thermal conductivity [20].…”

Section: Introductionmentioning

confidence: 99%

The impact of electronic control systems on improving the performance of the solar heater

Alaskaree,

Breesam

2024

ETJ

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“…In recent years, numerous scholars have conducted experimental and theoretical research on the impact of different heat-transfer fluids on the performance of solar collector systems. [14,15] Water is commonly employed as a heat-transfer fluid in solar collector systems. Wang et al [16] analyzed the thermal and flow processes in a solar hot-water-collection field and determined the resistance characteristics of the collection field under different factors.…”

Section: Introductionmentioning

confidence: 99%

Thermal–Hydraulic Performance of Flat‐Plate Solar Collector Plant Using Different Heat‐Transfer Fluids

Guo,

Mo,

Zhang

et al. 2024

Energy Tech

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The physical parameters such as density, specific heat capacity, and viscosity of the heat‐transfer fluid have an important influence on the performance of the solar collector system. If the physical parameters of heat‐transfer fluids are studied as constant physical properties, it will be difficult to reflect the influence of heat‐transfer fluids on the performance of the solar collector system. In this study, expressions are fitted for the physical parameters of heat‐transfer fluids and a coupled thermal–hydraulic performance model of the solar collector system is established. The coupled model is validated through performance‐testing experiments on the system and is used to investigate the impact of heat‐transfer fluid types and concentrations on the performance of the system under various solar radiation intensities, ambient temperatures, inlet temperatures, and flow rates. In the results, it is shown that in the case of anti‐freezing, a 50% volume concentration of ethylene glycol is more suitable for the heat‐collecting system. When selecting the heat‐transfer fluid, the heat‐transfer fluid with a lower concentration should be selected as far as possible while ensuring the freezing point. In the results of this study, a certain reference for the selection of the heat‐transfer fluid can be provided.

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Performance evaluation of solar flat plate collector using different working fluids through computational fluid dynamics

Cited by 13 publications

References 51 publications

Experimental Studies of the Effect of Microencapsulated PCM Slurry on the Efficiency of a Liquid Solar Collector

Experimental Studies of the Effect of Microencapsulated PCM Slurry on the Efficiency of a Liquid Solar Collector

The impact of electronic control systems on improving the performance of the solar heater

Thermal–Hydraulic Performance of Flat‐Plate Solar Collector Plant Using Different Heat‐Transfer Fluids

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