Experimental study on a novel hybrid system of active composite PCM wall and solar thermal system for clean heating supply in winter

Khaled

Journal of Energy Storage

et al. 2021

191

Researchers worldwide are investigating thermal energy storage, especially phase change materials, for their substantial benefits in improving energy efficiency, sustaining thermal comfort in buildings and contributing to the reduction of environmental pollution. Residential buildings and commercial constructions, being dependent on heating and cooling systems, are subjected to the utilization of PCM technology through several applications. The current study presents a state-of-the-art review that covers recent literature on thermal energy storage systems utilizing PCMs for buildings. The reviewed applications are heating and hybrid applications, that are categorized as passive and active systems. A summary of the PCMs used, applications, thermo-physical properties and incorporation methods are presented as well. The study emphasizes the promising effectiveness of PCM in building heating applications, and highlights the significance of PCM system hybridization. The study shows that experimental investigations on commercial constructions, and hybrid systems development and optimization, are still required. Finally, possible combinations of active and passive heating applications with their auspicious benefits in terms of energy efficiency augmentation, are recommended. Highlights  State-of-the-art review on PCM building applications for heating and hybrid systems  Active and Passive classification for heating and hybrid systems  Challenges altering the PCM technology for energy-efficient buildings are addressed  Hybridization of active and passive systems forms a potential method toward NZEB

Section: Analysis Of Studied Hybrid Applicationsmentioning

confidence: 99%

A review on phase change materials for thermal energy storage in buildings: Heating and hybrid applications

Khaled

Journal of Energy Storage

et al. 2021

191

J of Applied Polymer Sci

“…Combining solar systems with building wallboards can both improve the performance of wallboards and achieve a sustainable energy supply. Kong et al 164 designed a kind of building wallboards by combining the wallboards which were prepared by expanded perlite and PCMs with the solar energy systems, which may be utilized to improve thermal comfort indoors, and provide a sustainable and clean energy supply. The experimental results demonstrated that the prepared wallboards had good integration with the solar energy system, and the daily energy consumption could be reduced by 44.16%.…”

Section: Sspcms In Buildingsmentioning

confidence: 99%

Construction strategies and thermal energy storage applications of shape‐stabilized phase change materials

Yan

Wang

et al. 2021

Phase change materials (PCMs) are usually used in latent thermal energy storage systems to address the mismatch between heat energy supply and demand, due to their high energy storage density, high-latent heat, and almost constant temperature during phase change process. However, the low-thermal conductivity of PCMs and severe leakage during phase change limit their practical applications. Thus, extensive efforts have been devoted to constructing shapestabilized PCMs (SSPCMs). In this review, recent advances of the construction strategies and thermal energy storage applications of SSPCMs are summarized. Especially, the microencapsulated PCMs, SSPCMs based on porous scaffolds, as well as their potential applications are highlighted. Finally, the future perspectives and remaining challenges in this research field are prospected.

“…Results showed that the solar radiation was stored during day hours and released for 6-8 h after sunset which reduced the daily temperature swings (up to 10 °C) and heating requirements (more than 17%, yearly). Kong et al [64] invented a hybrid system by coupling perlite-based composite PCM wallboard with a solar heating system. The hybrid system was placed to the inside of the tested room's wall and compared with another reference room without PCM (woring with heating radiators) for three working days under winter conditions of Tianjin, China.…”

Section: Contribution Of Pcm To the Building Energymentioning

confidence: 99%

Performance Assessment of Phase Change Materials Integrated with Building Envelope for Heating Application in Cold Locations

Al-Yasiri

Szabó

2021

EJENERGY

Phase change materials (PCMs) are increasingly investigated in the last years as successful in many thermal energy storage applications. In the building sector, PCMs are utilised to improve building efficiency by reducing cooling/heating loads and promoting renewable energy sources, such as solar energy. This paper shows the recent research works on integrating PCMs with building envelope for heating purposes. The main PCM categories and their main characteristics are presented, focusing on PCM types applied for building heating applications. The main methods adopted to incorporate PCMs with building elements and materials are mentioned, and the popular passive and active incorporation techniques are discussed. Lastly, the main contribution to building energy saving is discussed in terms of heating applications. The analysed studies indicated that all PCMs could improve the building energy saving in the cold climates by up to 44.16% regardless of their types and techniques. Several conclusions and recommendations are derived from the analysed studies that are believed to be a guideline for further research.