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DOI: 10.1016/J.APENERGY.2013.07.049 Corpus ID: 111029776; Improved heat storage rate for an automobile coolant waste heat recovery system using phase-change material in a fin–tube heat exchanger
DOI: 10.1016/J.APENERGY.2013.07.049 Corpus ID: 111029776; Improved heat storage rate for an automobile coolant waste heat recovery system using phase-change material in a fin–tube heat exchanger
A process for simulation of heat storage in phase-change materials (PCM) based on computational fluid dynamics (CFD) techniques is presented. Cylindrical shape of PCM heated by an inner tube is ...
A Heat Exchanger with Finned Tube and Phase-Change Material for Thermal-Energy Storage: Effect of Gravity and Orientation. Conference paper; ... M., Delalić, N., Duraković, B., Gavranović, H.: CFD-based assessment of thermal energy storage in phase-change materials (PCM). In: Proceedings of the Energy Technologies Conference …
2016. Phase change materials are being used for energy storage, thermal insulation of buildings and equipments due to their high storage capacity and isothermal behavior during the phase change processes.
Latent heat storage unit containing an organic PCM suitable for solar domestic hot water is investigated.. Compact finned-tube heat exchanger is employed to enhance heat transfer. • External heat transfer area is explicitly computed using fin efficiency.. Effectiveness-NTU method is applied to derive an empirical correlation and compare with other systems.
The significance of latent heat thermal energy storage is more substantial when compared to sensible energy storage due to its higher energy storage capability. In this paper, heat transfer enhancement techniques for melting (charging) and solidification (discharging) by using external fins and internal–external fins for a phase change material (PCM) in duplex and …
Energy storage performance improvement of phase change materials-based triplex-tube heat exchanger (TTHX) using liquid–solid interface-informed fin configurations Appl. Energy, 333 ( 2023 ), Article 120576
One of the new and efficient methods in the field of thermal energy storage is use of phase-change materials that have high latent heat. In this paper, enhancement of heat transfer method using rectangular fin to melt the phase-change material in a triplex tube heat exchanger has been investigated numerically.
The LHTES tank to be optimized is a multi-tube finned shell and tube heat exchanger with the same tank size. ... Rate capability and ragone plots for phase change thermal energy storage. Nat Energy, 6 (2021), pp. 295-302, 10.1038/s41560-021-00778-w. View in …
When an engine is cold-started, it typically produces more exhaust emissions and consumes more fuel than normal; these problems can be reduced by warming up the engine faster [7] this study, the waste heat of the coolant in an internal combustion engine is stored as latent heat in the fin–tube heat exchanger and the PCM, and is then used to shorten the …
Energy storage performance improvement of phase change materials-based triplex-tube heat exchanger (TTHX) using liquid – solid interface-informed fin configurations Appl. Energy, 333 ( August 2022 ) ( 2023 ), Article 120576, 10.1016/j.apenergy.2022.120576
Experimental Investigation of Phase Change inside a Finned-Tube Heat Exchanger ... energy storage applications including waste heat recovery, ... on the storage capability of the system. Results ...
Mat et al. [33] numerically investigated melting process of RT82 as a phase change material in a triplex tube heat exchanger (TTHX). They used three enhancement methods to improve thermal performance of the heat exchanger; externally finned TTHX, internally finned TTHX and TTHX enhanced with both internal and external fins.
Downloadable (with restrictions)! In this study, the actual heat transfer coefficient of a phase-change material (PCM) was measured experimentally with the purpose of improving the heat storage rate of an automotive coolant waste heat storage system using the latent heat of the PCM. The heat transfer rate and time required to store heat was theoretically analyzed in the …
A 2-dimensional CFD mathematical investigation on a PCM heat exchanger having circular and elliptical tubes having an ellipticity ratio of 0.6 [31] with and without fin is performed in this study. To lower the time, it takes for melting PCM, fins are incorporated around circular and elliptical tubes and the geometries are compared for heat transfer improvement.
Phase change energy storage technology provides a sustainable and effective method for storing and releasing energy, positioning it as a highly promising solution in the renewable energy field [1, 2].However, current phase change energy storage heat exchangers encounter several challenges, such as low heat transfer efficiency and insufficient energy …
In this study, the melting behaviour of phase changing materials is investigated since it is used as heat storage materials. For this purpose, body-pipe-type heat exchanger models with different pipe sequences are created. Hot water is assumed to flow from the inner pipes of heat exchangers while a paraffin wax filling as heat storage material is wrapped …
Yang Ahmed HN, Al-Mudhafar, AFN, Nicolleau FCGA (2021) Enhancing the thermal performance of PCM in a shell and tube latent heat energy storage system by utilizing innovative fins. ... Ranjbar AA, Bahrampoury R (2019) Investigation of phase change in a spiral-fin heat exchanger. Appl Math Model 67:297–314. Google Scholar ...
So the discussion of the influence on multi-tube heat exchanger by natural convective is conductive to the enhancement of heat transfer and reduction in charging time. In this paper, a CFD model on the shell-and-tube phase change energy storage heat exchanger was established.
Previous studies in literatures adequately emphasized that inserting fins into phase change material is among the most promising techniques to augment thermal performance of shell-and-tube latent heat thermal energy storage unit. In this study, the novel unequal-length fins are designed from the perspective of synergistic benefits of heat transfer …
In this paper, the heat transfer process of a compact tube-fin latent heat thermal energy storage unit (LHTES) with phase change nanoemulsions was numerically …
To improve the heat transfer enhancement design efficiency of fins and expand their application and reference range, this paper summarizes the current development process …
It was observed that a growth in mass flow rate involves an increase of the melting front radius, as a consequence of a higher Reynolds number. However, a 2D model, using a commercial CFD software, was developed [35] with the objective of improving the design of a finned shell and tube heat exchanger for latent heat storage. The studied PCM was ...
The model is validated by Hosseini et al. [10] for PCM energy storage system using a shell-tube heat exchanger. The used PCM was RT50 and 8 conventional copper annular fins with the spacing of 125 mm were placed on the inner tube. ... Investigation of phase change in a spiral-fin heat exchanger. Appl. Math. Model., 67 (2019), pp. 297-314. View ...
Abstract. Phase change materials (PCMs) are promising for storing thermal energy as latent heat, addressing power shortages. Growing demand for concentrated solar power systems has spurred the development of latent thermal energy storage, offering steady temperature release and compact heat exchanger designs. This study explores melting and …
Results showed that, compared with the uniform straight fin tube, the non-uniform angled fin can effectively promote the melting process of the whole fin tube, esp. in the bottom area, leading to a 69.59% redn. in complete melting time. This provided a ref. for the performance optimization of the shell-and-tube finned phase change heat storage ...
4 · Solid-state hydrogen storage technology using metal hydrides as carriers has great application prospects. This study aims to optimize the heat transfer resistance and absorption kinetics issues encountered in practical applications of LaNi 5-H 2 storage materials in storage reactors. A mathematical model for the hydrogen absorption process in the reactors based on …
This paper investigates a finned tube heat exchanger with dual-side phase change heat transfer, i.e., LHTES of paraffin RT60 on the fin side and condensation of low-pressure water on the tube side. ... It is indicated that dual-side phase change heat transfer to store energy can provide a compact and efficient thermal management solution for ...
With the increasing proportion of new energy generation and the increasing depth of peaking of thermal power generation, the contradiction between supply and demand in energy is becoming increasingly prominent, …
Phase change material (PCM) has promising applications as an energy storage material in thermal energy storage (TES) systems. However, the low thermal …
DOI: 10.1016/j.apenergy.2022.120576 Corpus ID: 255330190; Energy storage performance improvement of phase change materials-based triplex-tube heat exchanger (TTHX) using liquid–solid interface-informed fin configurations
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