Open AccessInorganic PCMs applications in passive cooling of buildings - A review
Author(s) -
Hafiz Muhammad Adeel Hassan,
Ivar Lund
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2116/1/012103
Subject(s) - thermal energy storage , passive cooling , materials science , latent heat , phase change material , phase change , thermal conductivity , supercooling , free cooling , environmental science , eutectic system , thermal , process engineering , nuclear engineering , water cooling , metallurgy , composite material , mechanical engineering , engineering physics , thermodynamics , engineering , alloy , physics
Buildings consume around 40% of total world energy and are responsible for 30-35% greenhouse gas emissions globally. Latent heat thermal energy storage is one of the most promising techniques being investigated currently to reduce the thermal load of buildings. Different types of phase change materials (PCMs) i.e. organic, inorganic and eutectics with different thermophysical properties have been investigated for passive cooling of buildings showing great potential for saving energy. Due to their higher thermal conductivity and high heat storage capacity per unit volume, inorganic phase change materials take advantage over organic ones. They can be used as stand-alone heat storage systems for free cooling, embedded in building walls, windows, roofs and ceilings etc. Studies have shown that there are some drawbacks of inorganic PCMs as well like corrosion of container material, phase separation and supercooling which require solutions.