Abstract
Thermal Energy Storage (TES) materials, such as Phase Change Materials (PCMs) are proven to enhance the energy efficiency in many fields, such as automotive and building sectors, which correspond to the most energy intensive ones. Shape-stabilized PCM and cascade PCM are procedures to overcome the most important barriers when PCMs are applied since PCMs need to be encapsulated for their technical use: the leakage of the liquid phase, corrosion, low heat transfer and narrow temperature of application. In the present study, a novel shape stabilized PCM with cascade performance (cascade shape stabilized phase change material, CSS-PCM) is synthesized via dissolution, which allows up to 60 wt.% of a paraffin-PCM in the final composition. The novel CSS-PCM is based on a biopolymer, the polycaprolactone (PCL), a low melting temperature polyester as polymeric matrix and RT27 and Micronal DS 5040 acting as PCM. To evaluate the performance of the new TES materials developed, several techniques have been used: Differential Scanning Calorimetry (DSC), and Fourier-Transformed Infrared (FT-IR) spectroscopy were used to evaluate the thermophysical properties and the chemical properties of the different formulations. The CSS-PCM show an increment of storage capacity by increasing the PCM content, and the thermal reliability was also tested: some of the CSS-PCM formulations were stable for up to 500 thermal cycles. Finally, as a potential application of the new polymeric-based PCM 3D, a printing attempt was performed in order to analyze the viability of the formulations to be used as 3D printing material as a first proof of concept.
Highlights
Energy is the base of social and economic development
The use of the latent heat for this proposal is ideal by means of use of the phase change materials (PCM), principally the solid–liquid Phase Change Materials (PCMs) that presents the higher energy storage capacity, but needs to overcome different barriers, such as corrosion, leakages, or low heat transfer [2,3]
2 which show2 which curves of the cascade shape-stabilized PCM (CSS-PCM) manufactured presented in Figure the different peak dimensions ofdimensions
Summary
Energy is the base of social and economic development. Nowadays, energy production does not meet the energy demand of the society and the industries. An increase and fostering of renewable energies should be done, and the development of new materials and concepts is in the hot-spot of the investigation. It is an ideal candidate to decrease the energy demand in various sectors, such as buildings, automobiles, and electronic devices, reducing the peak temperatures that entail peaks of energy to maintain a constant temperature. The TES materials can act as a thermoregulator, working on a cooling or heating system, such as air conditioning used in buildings and automobiles or other devices. The use of the latent heat for this proposal is ideal by means of use of the phase change materials (PCM), principally the solid–liquid PCM that presents the higher energy storage capacity, but needs to overcome different barriers, such as corrosion, leakages, or low heat transfer [2,3]
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