ABSTRACT

Latent heat storage systems, using phase change materials (PCMs), present the advantage of a high storage density at nearly constant temperature. They offer intrinsic advantages for heat storage in combination with steam as heat transfer fluid. Important applications of these storage systems are the areas of solar industrial process heat supply and heat recovery in industrial batch processes. The presented work aims to identify the most suitable PCMs, according to the studied temperature range (120.150 .C) and is based both on literature review and thermal analysis measurements. The thermal behaviour of eleven potential storage materials was studied by means of thermogravimetry (TG) and differential scanning calorimetry analysis (DSC), coupled with a quadrupole mass spectrometer (QMS). The paper emphasizes the importance of the measurement conditions on the results. In particular the impacts of the type of crucible (open/closed), the atmosphere (N2, N2/O2) and the cycling stability are presented.

Compounds

#	Formula	Name
1	C4H11NO3	2-amino-2-(hydroxymethyl)-1,3-propanediol
2	C5H10O4	2,2-bis(hydroxymethyl)propanoic acid
3	C10H18O4	1,10-decanedioic acid
4	C4H4O4	cis-1,4-butenedioic acid
5	C6H10O4	1,6-hexanedioic acid
6	C8H4O3	isobenzofuran-1,3-dione
7	C10H10O4	dimethyl 1,4-benzenedicarboxylate

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Phase	Method	#Points
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2	Crystal 2 Crystal 1 Air at 1 atmosphere	DSC	1
POMD	1	Triple point temperature, K ; Crystal 2	Crystal 2 Crystal 1 Air at 1 atmosphere	DTA	1
POMD	2	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2	Crystal 2 Crystal 1 Air at 1 atmosphere	DSC	1
POMD	2	Triple point temperature, K ; Crystal 2	Crystal 2 Crystal 1 Air at 1 atmosphere	DTA	1
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal	Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	3	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	4	Molar enthalpy of transition or fusion, kJ/mol ; Crystal	Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	4	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	5	Molar enthalpy of transition or fusion, kJ/mol ; Crystal	Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	5	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	6	Molar enthalpy of transition or fusion, kJ/mol ; Crystal	Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	6	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	7	Molar enthalpy of transition or fusion, kJ/mol ; Crystal	Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	7	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Thermal analysis of phase change materials in the temperature range 120.150 .C

Haillot, D., Bauer, T., Kroner, U., Tamme, R.

ABSTRACT