Table 3.

Properties of PCM and the reason for each property (Hasan et al., 2014)

Properties	Requirement	Reason of requirement
Thermal	• High latent heat • High heat capacity • Good thermal conductivity • Reversible phase change • Fixed melting point	• Maximum heat absorption • Minimum sensible heating • Efficient heat removal • Diurnal response • Consistent behavior
Physical	• Congruent meting • Low volume expansion • High density	• Minimum thermal gradient • No overdesign • Low containment requirement
Kinetic	• No super cooling • Good crystallization rate	• Easy to freeze • Faster solidification
Chemical	• Chemical stability • Non-corrosive • Non-flammable • Non-explosive • Non-toxic	• Long life • Long container live • Comply with building safety code • Environment friendly
Economic	• Abundant • Cheap and cost-effective	• Market competitiveness • Economic viability and market Penetration
Environmental	• Recyclable/reusable • Odor free	• Ease to dispose of comfortable to apply in dwelling environment