Table 7. Comparing the Thermophysical Properties of PCM, PCD, Water, and Water–Propylene Glycol.

property		unit	n-decane14	water14	PG6014	PCDw	PCDpg60
specific heat capacity at 25 °C	cp	kJ/kg·K	1.70	4.19	2.32	3.69	2.20
density at 25 °C	ρ	kg/m3	902	997	1051	988	1012
latent heat	Δhpc	kJ/kg	197	333	93	32	13
heat conductivity at 25 °C	k	W/(m·K)	0.23	0.61	0.22	0.529	0.39
viscosity at 100 1/s at 20 °C	η	mPa·s	solid	0.9	29.5	3.1	17.0