The present invention relates to a compound of Formula (I): whereinR.sup.1, R.sup.2, m, n, p, Q, X, Y, W, and “A” are as described herein. The present invention also relates to a process for preparation of a compound of Formula (I). Also disclosed is a thermal-storage device comprising one or more compounds of Formula (I) and a method of storing energy.

In one aspect, thermal energy storage compositions are described herein. In some embodiments, a composition comprises 0.5-10 wt. % polysaccharide and 88-99.5 wt. % water, wherein the weight percentages are based on the total weight of the composition. Moreover, in some cases, the composition is shape stable at 20° C. and 1 atm.

The invention provides shape-stable products for storing and releasing thermal energy, based on thermoplastic polymer compositions containing organic phase change materials (PCM) incorporated into a polymer matrix, the products withstanding multiple melting-crystallization cycles of the PCM while maintaining their shape, dimensions, and the thermal energy storage capacity.

The present invention is related to a method for obtaining nitrate-based eutectic mixtures based on a BET model to thermal storage of solar refrigeration systems within the range of temperature from 0 to 15° C. Mixtures based on the following hydrate salts: LiNO.sub.3—NaNO.sub.3—Mn(NO.sub.3).sub.2—H.sub.2O, LiNO.sub.3—NH.sub.4NO.sub.3—Mn(NO.sub.3).sub.2—H.sub.2O, LiNO.sub.3—Mn(NO.sub.3).sub.2—Mg(NO.sub.3).sub.2—H.sub.2O, LiNO.sub.3—NH.sub.4NO.sub.3—Mg(NO.sub.3).sub.2—H.sub.2O and LiNO.sub.3—Mn(NO.sub.3).sub.2—Ca(NO.sub.3).sub.2—H.sub.2O, having melting points of 10.8, −1.1, 13.1, 12.0 and 7.1° C., respectively. Thermal and physical properties were established such as the heat of crystallization/melting, calorific capacity to solid and liquid phases, viscosity, density and change of volume during the mixture of eutectic mixtures. The results of energy storing density (esd) varied from 238.3 to 304.5 MJ.Math.m.sup.−3. The phase changing material (PCM) being more potent to be used in solar energy-assisted air conditioning systems (AC) is LiNO.sub.3—NaNO.sub.3—Mn(NO.sub.3).sub.2—H.sub.2O.

A method to form a phase change material (PCM). The method includes preparing a polymer solution by mixing an amount of a polymer in a solvent and mixing the polymer solution with an UiO-66 metal-organic framework (MOF) to form a composite. The polymer is a polyethylene glycol (PEG). The method further includes subjecting the composite to ultrasonic agitation and evaporating the solvent from the composite to form the PCM. After the evaporation of the solvent, particles of the PCM exhibit rounded octahedral structures.

Ruptureable, dual reagent mono-capsules are disclosed that have a core composition, which includes a first reagent, encapsulated within a polymer wall, and a shell connected to an exterior surface of the polymer wall by a surfactant. The shell is made from a second reagent that is chemically bonded to the surfactant by a chemical electrostatic interaction. Upon rupture of the polymer wall of the mono-capsule, the first reagent and the second reagent chemically react with one another to form a reaction product.

In one aspect, compositions are described herein. In some embodiments, a composition comprises a phase change material, a hydrophobic sorption material, and a viscosity modifier. In some embodiments, a composition comprises a foam and a latent heat storage material dispersed in the foam, the latent heat storage material comprising a phase change material and a hydrophobic sorption material.

A phase change material composition for latent heat storage is provided. In one embodiment, the phase change material includes a salt hydrate having a melting temperature (T.sub.m) of from 1° C. to 100° C. as determined in accordance with ASTM E793. The phase change material further includes a stabilizing matrix including a polysaccharide selected from the group of a nanocellulose, a sulfonated polysaccharide, a starch, a glycogen, a chitin, and combinations thereof. A composite article including the phase change material composition is also provided.

Among other things, the present disclosure relates to phase change material (PCM) composites composed of an PCM mixed with a nucleating agent contained within the pores of a graphite matrix and/or a hydrogel. The process to create these PCM composites includes coating the surface of graphite with a surfactant, compressing the graphite to form a matrix, then filling the graphite matrix with the PCM.

A heat storage material composition according to an aspect of the present invention includes a main agent mixture composed of calcium chloride hexahydrate. ammonium chloride, and water. wherein when the content of calcium chloride hexahydrate is defined as CA mass %, the content of ammonium chloride is defined as NH mass %. and the content of water is defined as W mass % in 100 mass % of the main agent mixture, parameters X and Y defined by equations (P1) and (P2) below satisfy equations (1) to (5) below.

[Equation 1]

X=100×CA/(CA+W)   (P1)

[Equation 2]

Y=100×NH/(CA+NH+W)   (P2)

[Equation 3]

X−51.75>0   (1)

[Equation 4]

52.75−X>0   (2)

[Equation 5]

4.25−Y>0   (3)

[Equation 6]

1.2245X+Y−66.367>0   (4)

[Equation 7]

−2.1569X+Y+110.27>0   (5)