Applications of PCM have covered a wide range of energy-dependent entities and resources. Such applications are: solar energy (such as solar dryers [47] and solar domestic hot water systems [48]), industrial heat recovery, industrial worker equipment (such as helmets [49]), electrical power peaking regulation, textiles, healthcare, liquefied …
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The thermal energy storage (TES) is an energy storage method implemented to reduce the heating energy consumption of buildings by utilizing a high-efficiency heating system and a TES system. Therefore, in this study, a TES system is applied to a high-efficient floor heating system. Various methods are available to utilize …
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The C-MPCM was pressed into phase-change energy storage bricks and embedded into heating/cooling-medium coils to form a phase-change radiant floor and ceiling. The scaled-down experiments and the real-size outdoor experiments were used to verify each other and proved that the optimal water supply temperature is 17 °C in …
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Radiant heating floors with phase change materials (PCMs) for thermal energy storage (TES) represent an opportunity to achieve improvements in energy efficiency in buildings. In radiant floors that include PCM in macro-capsules the thermal energy is stored during melting and subsequently released during solidification.
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The latent heat of the shellac wax is obtained as 210.5 kJ/kg (for curve A to D). The specific heat of solid and liquid shellac wax is calculated over a temperature range is 2.1 ± 0.2 kJ/kg⋅ C and 2.2 ± 0.2 kJ/kg⋅ C, respectively. 3.2.5. …
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Half of electric heat energy shifted from peak to off-peak hours Zhang et al. [16] 2006 60 mm SSPCM T m = 32 C H m = 150 kJ/kgHot water Energy storage ratio of SSPCM floor 16–21% higher than concrete Li et al. [13] 2007 220 kg …
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This form of heating provides a large heating surface, which makes it possible to heat the room uniformly with low heat fluxes in the order of 100 W/m 2 or less. Development of a third order explicit non-linear finite difference network model to study the performance of a floor heating system with high solar gain has been presented by …
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Zhong et al. prepared porous expanded graphite to enhance the thermal property of paraffin wax for latent-heat thermal energy storage [43]. There were many interconnected pores in the expanded ...
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Each heat storage and release cycle experiment has lasted for 12 h, including 6 h of the heat storage stage and 6 h of the heat release stage. The test results of the average surface temperature of the sample are shown in Fig. 12, of which, (a) and (b) are the 2th thermal cycle result, and (c) and (d) are the 50th thermal cycle result.
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In addition, due to high latent heat, chemical inertness, effective thermal stability, easy availability, and low price, paraffin wax is a good organic material for phase change energy storage [12]. Chemically, paraffin wax is inert because there are no functional groups or free electrons.
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Vol-5 Issue-2 2019 IJARIIE -ISSN(O) 2395 4396 10109 2746 ENERGY STORAGE SYSTEM FOR HEATING AND COOLING APPLICATION USING PARAFFIN WAX Rana Tarang1, Mevada Sangeet2, Manavar Mandakini3, Rajput Bhavik4, Lalit Patel5 ...
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Recovering medium-temperature (e.g., 150–180 C) industrial waste heat through latent heat thermal energy storage (LHTES) can effectively attenuate the consumption of fossil fuels. However, the LHTES system containing a single medium-temperature phase change material (PCM), e.g., erythritol, cannot absorb the part of heat …
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Experimental study and assessment of high-tech thermal energy storing radiant floor heating system with latent heat storage materials International Journal of Thermal Sciences ( 2020 ), p. 155, 10.1016/j.ijthermalsci.2020.106410
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The conventional active solar water-heating floor system contains a big water tank to store energy in the day time for heating at night, which takes much building space and is very heavy. In order to reduce the water tank volume or even cancel the tank, a novel structure of an integrated water pipe floor heating system using shapestabilized …
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Yun et al. [30] developed macroencapsulated phase change material (MPPCM) to improve heat storage and reduce energy consumption in dry floor heating systems. By using PCM, particularly n-eicosane in MPPCM, the power consumption can be reduced by up to 43 %.
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The goal of this work was to study the miscibility, thermal stability, thermomechanical properties, and temperature regulation performance of paraffin wax/bitumen blends for their potential use in solar thermal energy storage applications. Results indicated that these blends present a suitable thermal stability, and their …
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Phase change material based cooling of photovoltaic panel: A simplified numerical model for the optimization of the phase change material layer and general economic evaluation. M Arıcı, F Bilgin, S Nižetić, AM Papadopoulos. Journal of Cleaner Production 189, 738-745., …
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The thermal energy storage (TES) is an energy storage method implemented to reduce the heating energy consumption of buildings by utilizing a …
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For this reason, the practical energy demands of power and heat energy (reactive heat and evaporative heat) are recalculated at a given amount of the reactant, as shown in Fig. 10. There is a peak in the curve of heat demand, in addition, the power demand is larger when the mole ratio of H 2 /H 2 O is larger.
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Paraffin wax is regarded as the most promising phase change material (PCM) for energy storage applications. However, the low thermal conductivity of paraffin …
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Utilizing phase change materials (PCM) in thermal energy storage (TES) systems is demonstrating to be a practical approach for economically improving energy efficiency in …
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Wax paper is typically used to wrap foods for storage in the fridge, line dishes, pans, pots, and baking sheets that aren''t going in the oven, and create airtight seals on food storage containers. Wax paper also comes in handy for lining countertops and kitchen tables for rolling out pizza pies, pasta sheets, pie crusts, and other homemade ...
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Organic paraffin wax has been used in the solar dryer for latent heat storage, storing additional solar energy for drying, and releases energy when required [21]. It exhibits a high heat of fusion, reporting low degradation in thermal properties after going through 1500 melting/freezing cycles [22].
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Among the PCMs, organic paraffin wax is widely used due to its advantageous phase change temperature range (18 to 60 C), ... The proposed PCM energy storage floor heating system in this paper consists of several structural layers, arranged from top to heat ...
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Additionally, the latent heat storage properties of the paraffin wax should increase the systems'' total storage capacity and reduce lateral heat losses via its low thermal conductivity. With retardation periods from 2.5 to 4 hours, the results show an effective phase change effect of the paraffin wax, which reduces energy losses and …
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Utilizing phase change materials (PCM) in thermal energy storage (TES) systems is demonstrating to be a practical approach for economically improving energy efficiency in buildings. This study assessed the feasibility of applying low-cost PCM to an …
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By storing up to 138 kJ/kg energy in the paraffin wax, increased capacities of application-scale pit storages by up to 40.70 MWh are to be expected. Additionally, the self-healing features could be …
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As shown in Fig. 3, latent heat of Paraffin-GF systems increases with the increasing of the mass ratio of the paraffin wax in the composite.Latent heat values listed in Table 3 can be drawn out an almost linear relationship from Fig. 3 as follows: H = − 3.76 + 1.48 w Where H is the latent heat (J/g), w (%) is the mass ratio of the paraffin wax in the …
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The findings demonstrate that the cascade PCM energy storage floor heating system avoids overheating and saves >19 % of energy consumption during the heat charging process, elevates the floor surface temperature by about 2 K during the late stage of heat release and thus reduces floor surface temperature fluctuation in …
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Enhancing heating efficiency in electric radiant flooring systems with low-cost shape-stabilized paraffin wax composites: An experimental study. S. Jeong, Sumin Kim. Published in Journal of Energy Storage 1 July 2024. Engineering, Materials Science. View via Publisher. Save to Library. Create Alert. Cite. 58 References. Citation Type. More Filters.
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Special wax for phase change energy storage material is a special wax with phase change temperature of 20-80, which can be widely used in building energy saving, daily necessities, textile, medical care, and has superior performance.
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The most optimal PCMs for efficiently heating water are myristic acid, palmitic acid, and stearic acid, which possess a high heat retention capacity for an extended duration. Paraffin wax is one ...
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