The novel use of phase change materials in an open type refrigerated display cabinet: A theoretical investigation

Alzuwaid, F.A.; Ge, Y.T.; Tassou, S.A.; Sun, Junjie

doi:10.1016/j.apenergy.2016.07.088

Cited by 37 publications

(7 citation statements)

References 20 publications

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“…These results indicated that the cooling rate improved with velocity increasing; the cooling range was between 2.05 and 2.95 • C from 5 to 45 min. The cooling capacity release rate of the storage module was affected by forced convection and thermal conductivity [52], and the cooling capacity released in a certain period was limited. When air velocity was low, the cooling capacity taken away from the storage area was lower than the cooling capacity released by the storage module, resulting in a high outlet temperature of the fan, thus affecting the cooling rate in the cargo area.…”

Section: Inlet-velocity Influencementioning

confidence: 99%

Temperature Distribution in Insulated Temperature-Controlled Container by Numerical Simulation

Xia

Wei

et al. 2020

Energies

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Cold-storage containers are widely used in cold-chain logistics transportation due to their energy saving, environmental protection, and low operating cost. The uniformity of temperature distribution is significant in agricultural-product storage and transportation. This paper explored temperature distribution in the container by numerical simulation, which included ventilation velocity and the fan location. Numerical model/numerical simulation showed good agreement with experimental data in terms of temporal and spatial air temperature distribution. Results showed that the cooling rate improved as velocity increased, and temperature at 45 min was the lowest, when velocity was 16 m/s. Temperature-distribution uniformity in the compartment became worse with the increase in ventilation velocity, but its lowest temperature decreased with a velocity increase. With regard to fan energy consumption, the cooling rate of the cooling module, and temperature-field distribution in the product area, velocity of 12 m/s was best. Temperature standard deviation and nonuniformity coefficient in the container were 0.87 and 2.1, respectively, when fans were located in the top four corners of the container. Compared with before, the average temperature in the box was decreased by 0.12 °C, and the inhomogeneity coefficient decreased by more than twofold. The results of this paper provide a better understanding of temperature distribution in cold-storage containers, which helps to optimize their structure and parameters.

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Section: Inlet-velocity Influencementioning

confidence: 99%

Temperature Distribution in Insulated Temperature-Controlled Container by Numerical Simulation

Xia

Wei

et al. 2020

Energies

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“…Most of them optimize ORDC when it was full with package. The structure [5,6], the air guiding strip [2], and the phase change material (PCM) [3,4] can be found to improve the ORDC performance. For example, Wu et al [5] discussed the effect of porosity of the perforated back panel (PBP) (0% -7%) on average temperature.…”

Section: Introductionmentioning

confidence: 99%

Optimization of open refrigerated display cabinet based on different package arrangements

Shengchun¹,

Liu²,

Liu³

et al. 2023

Preprint

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Open refrigerated display cabinet (ORDC) is widely used in supermarket. It is very convenient for customer to take package. Therefore, the package is not full in ORDC in most time. And the different package arrangement could directly affect ORDC performance. Therefore, this paper optimizes the ORDC and aims to find an optimal structure to meet all different package arrangements. By using the validated model, the windshield and airfoil were employed. Results showed the optimal windshield width, the distance of from evaporator to windshield, and the distance from airfoil structure to shelf edge were 70 mm, 210 mm, and 80 mm, respectively. Under different package arrangements, the average temperature only varied 0.8 °C and the energy consumption 9%. The results obtained in this paper could provide guidance to optimize ORDC.

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“…The fundamental advantage of combining PU foam-MPCM in cold storage is the high storage capacity over a small temperature range and greater energy efficiency. As a result, researchers have looked into incorporating PCM into cold energy storage sectors such as solar power air conditioning systems, 20 supermarket refrigeration, 21 direct application of PCM in cold storage vans, 22 beverage coolers 23 and bottle coolers. 24 The polyacrylic shell material is used in many studies because of its compatibility with organic PCM and paraffin is the material of choice because of its excellent thermal conductivity, availability, cost-effectiveness and appropriate phase change temperature range for cold energy storage applications.…”

Section: Introductionmentioning

confidence: 99%

Development of rigid polyurethane foam incorporating phase change material for a low‐temperature thermal energy storage application

Mahajan

Emmanuel²,

Rao³

et al. 2023

Polymer International

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Polyurethane (PU) foam is most commonly used in thermal insulation in cold storage applications but it lacks thermal energy storage characteristics. In the present work, a phase change material (PCM) n‐tetradecane is microencapsulated with poly(methyl methacrylate‐co‐methacrylic acid) using oil‐in‐water emulsion polymerization followed by incorporation into the PU foam formulation to fabricate composite foam. The purpose of the study was to combine thermal insulation along with thermal energy storage characteristics into PU foam. The phase change enthalpy of PU foam was improved from 22.43 to 55.46 J g−1 by changing the microcapsule loading fraction from 10% to 30%. The composite PU foam exhibits good thermal reliability even after 100 thermal cycling tests. The morphological observation confirms a decrease in cell size while increasing the microcapsule content. It is found that microcapsule addition has no effect on the thermal stability of PU foam. A prototype has been fabricated and tested, showing an enhancement in the thermal energy storage capacity of PU composite foam. This performance makes this PU‐PCM system feasible for cold energy storage applications. © 2022 Society of Industrial Chemistry.

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The novel use of phase change materials in an open type refrigerated display cabinet: A theoretical investigation

Cited by 37 publications

References 20 publications

Temperature Distribution in Insulated Temperature-Controlled Container by Numerical Simulation

Temperature Distribution in Insulated Temperature-Controlled Container by Numerical Simulation

Optimization of open refrigerated display cabinet based on different package arrangements

Development of rigid polyurethane foam incorporating phase change material for a low‐temperature thermal energy storage application

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