Experimental and numerical investigation of heat transfer in a channel with multiple phase change materials (PCMs)

Akyol, Erhan; Hacıhafızoğlu, Oktay; Susantez, Çiğdem; Kahveci, Kamil; Akyol, Uğur

doi:10.1016/j.est.2021.103710

Cited by 23 publications

(3 citation statements)

References 21 publications

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“…employed an FEA model to analyze the optimal phase-changing temperature and position for the climatic conditions of Sweden [12]. The analysis showed that the phase-changing temperature depended on the location of the study, while the optimal position was near the interior of the component.…”

Section: Introductionmentioning

confidence: 99%

Experiment and simulation analysis of roofing element integrated with phase change material

2023

Preprint

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Conventional reinforced concrete (CRC) roofing systems contribute close to 40% of the heat ingress into the ambient environment. This heat ingress is responsible for increased mechanical ventilation inside the built environment. Phase Change Material (PCM) roofs could be a solution to counteract the heat ingress since it stores heat energy when it changes their phase at a specific temperature. In this paper, CRC roofs were integrated with PCM and analyzed using COMSOL Multiphysics v5.6. The simulation results were validated using an insulated chamber, where concrete specimens were tested for temperature. Simulations and experiments were done to get the ideal thickness, type, and position of PCM integrated with CRC. All PCM roofs performed better in bottom fibre temperature than CRC roofs. PCM29 was the better option since their phase change cycle was completed throughout the year compared to PCM37 roofs, which can be used for arid climates. PCM integrated with CRC roofs of varying thicknesses were analyzed, and results were proportional to increasing thickness. The results also showed a saturation level in all the PCM roofs of a thickness of 2 cm. The position of PCM was experimented from top to bottom inside CRC. PCM integrated at the top and bottom with CRC showed hot and cold bottom fibre temperatures, respectively. The other position in which PCM was sandwiched with CRC worked out well since the bottom temperatures of the roof were comfortable. The practical application of such materials in conventional construction will reduce the cooling load requirement and create a better energy-efficient structure.

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Section: Introductionmentioning

confidence: 99%

Experiment and simulation analysis of roofing element integrated with phase change material

2023

Preprint

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“…Akyol et al [15] studied the heat transfer in a channel with paraffin-based pure RT22H and RT25HC as PCMs. The results showed that, with the increase of 2 • C of the inlet temperature and the decrease of 0.5 m/s of the inlet velocity, the thermal energy absorbed improved by 44%.…”

Section: Introductionmentioning

confidence: 99%

“…RT80 had the highest phase change enthalpy and RT50 had the closest phase change temperature to the lower working temperature of the system. Akyol et al [15] studied the heat transfer in a channel with paraffin-based pure RT22H and RT25HC as PCMs. The results showed that, with the increase of 2 °C of the inlet temperature and the decrease of 0.5 m/s of the inlet velocity, the thermal energy absorbed improved by 44%.…”

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confidence: 99%

Numerical Analysis of a Latent Heat Storage Using Plate Heat Exchanger for Absorption System Conditions

et al. 2022

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The use of the phase change material (PCM) as a storage medium represents an important advance to store energy for the absorption cooling systems when solar energy is not available; however, the temperature of the storage tank is a key parameter for the adequate operation of the cooling system. This paper presents a parametric analysis of a flat and a commercial plate heat exchangers with MgCl2·6H2O as the PCM at absorption cooling conditions. The plate heat exchanger (PHE) is a chevron type with an angle of 45° and a plate area of 0.04 m2. The governing equation was solved using the method of finite difference. The results showed that the corrugated plate improved the heat transfer than the flat plate; however, the flat plate obtained a higher operation time than the corrugated plate for the absorption cooling condition in the discharge process because the output temperature of the PHE was much higher than the operating conditions. Finally, the decrement of the PCM thickness and the increment of the input temperature and flowrate of the heating fluid improved the heat transfer of the PHE; however, the main thermal resistance was still in the PCM.

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Unsteady heat transfer through a porous container during discharging of solar system utilizing hybrid nanoparticles

Milyani,

Abu-Hamdeh,

Azhari

et al. 2023

Case Studies in Thermal Engineering

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Experimental and numerical investigation of heat transfer in a channel with multiple phase change materials (PCMs)

Cited by 23 publications

References 21 publications

Experiment and simulation analysis of roofing element integrated with phase change material

Experiment and simulation analysis of roofing element integrated with phase change material

Numerical Analysis of a Latent Heat Storage Using Plate Heat Exchanger for Absorption System Conditions

Unsteady heat transfer through a porous container during discharging of solar system utilizing hybrid nanoparticles

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