Experimental Study of Thermal Effect of Lacquer Coating for PV-Trombe Wall System Combined with Phase Change Material in Summer

Table 2

Main properties of PCM.

Properties	Unit	Number
Melting point	°C	29-31 (standard 29)
Solid point	°C	26-28 (standard 26)
Latent heat (18-33°C)	kJ/kg	160
Solid density(20°C)	kg/L	1.43
Liquid density (40°C)	kg/L	1.23
Volume expansion rate	%	13.98
Thermal conductivity	W/(m·K)	0.6
Viscosity (50°C)	m^2/s	16.88