Performance enhancement of PCM latent heat thermal energy storage system utilizing a modified webbed tube heat exchanger

Al-Mudhafar, Ahmed H.N.; Nowakowski, Andrzej; Nicolleau, F.

doi:10.1016/j.egyr.2020.02.030

Cited by 36 publications

(9 citation statements)

References 13 publications

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“…It is found from the results that time of melting is 6 times shorter for triple tube HE. Al‐Mudhafar et al 82 numerically investigated the performance of webbed tube PCM‐based HE. Modified webbed tube HE has plates along with fins for improving the heat transfer rate amount of energy stored.…”

Section: Performance Enhancement Methodsmentioning

confidence: 99%

Review on thermal performance of heat exchanger using phase change material

Das

Kar

Sarangi

2022

Intl J of Energy Research

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This article reports detailed investigation of using different Phase Change Materials (PCM) in various designs of Thermal Energy Storage (TES) Devices: specifically, heat exchanger. The focus is on the performance analysis of different types of heat exchangers acting as TES having various PCMs which are substantially reviewed in this paper. The study highlights the difference in their geometry and performance output. Further, the importance of different performance enhancement methods with parametric study of different heat exchangers using PCM is described. From the detailed investigation, finally, it is realised that the different factors such as no. of outer tubes, no. of inner tubes, tube material selected, type of PCM, provision of an extended surface, use of different metal foams and nanoparticles, various types of composites, charging and discharging characteristics and packed and cascaded units are different heat transfer enhancement methods to improve the heat transfer. A novel kind of heat exchanger known as Webbed tube heat exchanger using PCM is discussed for an efficient TES unit. Further, a review of quantitative analysis of melting time, solidification time, charging and discharging time is discussed.

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Section: Performance Enhancement Methodsmentioning

confidence: 99%

Review on thermal performance of heat exchanger using phase change material

Das

Kar

Sarangi

2022

Intl J of Energy Research

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“…A 9.58% increase in the refrigerator's performance coefficient was found. A modified webbed tube heat exchanger was investigated by Mudhafar et al [27]. The solidification time was accelerated by 41%.…”

Section: The Current State Of Knowledgementioning

confidence: 99%

The Effect of Microencapsulated PCM Slurry Coolant on the Efficiency of a Shell and Tube Heat Exchanger

et al. 2022

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This paper describes the results of experimental studies on heat transfer in a shell and tube heat exchanger during the phase changes of the HFE 7000 refrigerant. The studies were performed using a mixture of water and a microencapsulated phase change material as a coolant. HFE 7000 refrigerant condenses on the external surface of the copper tube, while a mixture of water and phase change materials flows through the channels as coolant. Currently, there is a lack of research describing cooling using phase change materials in heat exchangers. There are a number of publications describing the heat exchange in heat exchangers during phase changes under air or water cooling. Therefore, the research hypothesis was adopted that the use of mixed water and microencapsulated material as a heat transfer fluid would increase the heat capacity and contribute to the enhancement of the heat exchange in the heat exchanger. This will enable an increase in the total heat transfer coefficient and the heat efficiency of the exchanger. Experimental studies describe the process of heat transfer intensification in the above conditions by using the phase transformation of the cooling medium melting. The test results were compared with the results of an experiment in which pure water was used as the reference liquid. The research was carried out in a wide range of refrigerant and coolant parameters: ṁr = 0.0014–0.0015 kg·s−1, ṁc = 0.014–0.016 kg·s−1, refrigerant saturation temperature Ts = 55–60 °C, coolant temperature at the inlet Tcin = 20–32 °C, and heat flux density q = 7000–7450 W·m−1. The obtained results confirmed the research hypothesis. There was an average of a 13% increase in the coolant heat transfer coefficient, and the peak increase in αc was over 24%. The average value of the heat transfer coefficient k increased by 5%, and the highest increases in the value of k were noted at Tin = 27 °C and amounted to 9% in relation to the reference liquid.

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“…[9][10][11][12][13][14] For the latent heat capacity, the methods of controlling the core/coating mass ratio, 15 shape of MPCM inclusions, 16 and polydopaminefunctionalized graphene oxide 17 are frequently used to enhance the latent heat capacity of MPCM. For example, Al-Mudhafar et al 18 designed a webbed tube heat exchanger to increase the latent heat thermal energy storage capacity of MPCMs. Besides, as the thermal conductivity of pure PCMs is usually low to impede the heat transfer capacity in the MPCM structure, high thermal conductivity materials, such as metal foam, 19 graphite, 20 graphene oxide, 21 carbon ber sheet, 22 Ag doped ZnO materials, are usually considered to be added into the MPCMs.…”

Section: Introductionmentioning

confidence: 99%