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The award-winning Phase Change Matters blog tracks the latest news and research on phase change materials and thermal energy storage. E-mail tips and comments to Ben Welter, communications director at Entropy Solutions. Follow the blog on Twitter at @PureTemp. Subscribe to the weekly PCM newsletter. Or join the discussion on LinkedIn.

Two Entropy advisors, Dr. Mohammed Farid and Lucas B. Hyman, are pleased to take your questions about PCMs and thermal energy storage. Send your questions to bwelter@puretemp.com. We'll select the best and post the answers here each week.

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Research roundup: Transient energy storage; metal alloys for high-temperature applications; low-cost PCM emulsion; more

Ben Welter - Wednesday, July 12, 2017

Transient thermal energy storage in partitioned enclosures packed with microencapsulated phase change materials [International Communications in Heat and Mass Transfer]

Considerations for the use of metal alloys as phase change materials for high temperature applications [Solar Energy Materials and Solar Cells]

Experimental analysis of a coiled stirred tank containing a low cost PCM emulsion as a thermal energy storage system [Energy]

Fabrication and characterization of novel shape-stabilized synergistic phase change materials based on PHDA/GO composites [Energy]

Fabrication of hard-shell microcapsules containing inorganic materials [International Journal of Refrigeration]

Renewable Energy and Energy Storage Systems [Energy]

Thermal Storage Capacity and Night Ventilation Performance of a Solar Chimney Combined with Different PCMs [International Journal of Photoenergy]

Preparation and characterizations of asphalt/lauric acid blends phase change materials for potential building materials [Construction and Building Materials]

Numerically Study the Performance of An Air—multiple PCMs unit for Free Cooling and Ventilation [Energy and Buildings]

Research roundup: Mid-temperature solar collector; PCM use in NZEB buildings; modeling of nitrate materials; more

Ben Welter - Friday, June 23, 2017

Experimental investigation and theoretical analysis on a mid-temperature solar collector/storage system with composite PCM [Applied Thermal Engineering]

Experimental and computational study of melting phase-change material in a triplex tube heat exchanger with longitudinal/triangular fins [Solar Energy]

Thermodynamic modeling of nitrate materials for hybrid thermal energy storage: Using latent and sensible mechanisms [Solar Energy]

Outdoor Characterization of Phase Change Materials and Assessment of Their Energy Saving Potential to Reach NZEB [Buildings]

Preparation and Supercooling Modification of Salt Hydrate Phase Change Materials Based on CaCl2·2H2O/CaCl2 [Materials]

Research roundup: Polystyrene microcapsules; vermiculite composites; topology optimization; more

Ben Welter - Friday, June 16, 2017

Polystyrene Microcapsules with Palmitic-Capric Acid Eutectic Mixture as Building Thermal Energy Storage Materials [Energy and Buildings]

Preparation and characterization of capric-palmitic-stearic acid ternary eutectic mixture/expanded vermiculite composites as form-stabilized thermal energy storage materials [Journal of Materials Science and Technology]

Topology optimization for heat transfer enhancement in Latent Heat Thermal Energy Storage [International Journal of Heat and Mass Transfer]

Investigating thermal properties of using nano-tubular ZnO powder in paraffin as phase change material composite for thermal energy storage [Composites Part B: Engineering]

Research roundup: Shape-stabilized PCM in epoxy matrix; myristyl alcohol/metal foam for solar thermal storage; more

Ben Welter - Thursday, June 01, 2017

Illustration of shape-stabilized PCM in epoxy matrix

Novel shape stabilized phase change material based on epoxy matrix with ultrahigh cycle life for thermal energy storage [Applied Thermal Engineering]

Thermal and electrical performance of a PV module integrated with double layers of water-saturated MEPCM [Applied Thermal Engineering]

Investigation on thermal and mechanical characteristics of concrete mixed with shape stabilized phase change material for mix design [Construction and Building Materials]

Thermal properties and thermal conductivity enhancement of composite phase change materials using myristyl alcohol/metal foam for solar thermal storage [Solar Energy Materials and Solar Cells]

Experimental and Numerical Study on Energy Performance of Buildings Integrated with Phase Change Materials [Energy Procedia]

Evaluation on Performance of a Phase Change Material Based Cold Storage House [Energy Procedia]

Using Phase Change Materials to Reduce Overheating Issues in UK Residential Buildings [Energy Procedia]

Effect of Supercooling on the Solidification Process of the Phase Change Material [Energy Procedia]

Experimental Investigation of a Spiral Tube Embedded Latent Thermal Energy Storage Tank Using Paraffin as PCM [Energy Procedia]

Investigation of specific heat and latent heat enhancement in hydrate salt based TiO2 nanofluid phase change material [Applied Thermal Engineering]

Modeling and investigation of high temperature phase change materials (PCM) in different storage tank configurations [Journal of Cleaner Production]

Lauric acid/modified sepiolite composite as a form-stable phase change material for thermal energy storage [Applied Clay Science]

Research roundup: Crystallization of salt hydrates in polymeric foam; Glauber's salt; cetyl alcohol/HDPE composites; more

Ben Welter - Thursday, May 18, 2017

Numerical study on melt fraction during melting of phase change material inside a sphere [International Journal of Hydrogen Energy]

Crystallization of inorganic salt hydrates in polymeric foam for thermal energy storage application [Journal of Energy Storage]

Evaluating the passive and free cooling application methods of phase change materials in residential buildings: A comparative study [Energy and Buildings]

Microstructure and thermal properties of cetyl alcohol/high density polyethylene composite phase change materials with carbon fiber as shape-stabilized thermal storage materials [Applied Energy]

Screening alternatives for producing paraffinic phase change materials for thermal energy storage in buildings [International Journal of Energy Research]

Various Applications of Phase Change Materials: Thermal Energy Storing Materials [pdf] [International Journal of Emerging Research in Management]

Preparation and thermal properties of Glauber’s salt-based phase-change materials for Qinghai–Tibet Plateau solar greenhouses [International Journal of Modern Physics B]

Numerical analysis on the energy storage efficiency of phase change material embedded in finned metal foam with graded porosity [Applied Thermal Engineering]

Passive cooling potential in buildings under various climatic conditions in India [Renewable and Sustainable Energy Reviews]

Research roundup: Hydrogen-based PCM micro engine; PV module temperature stabilization; more

Ben Welter - Wednesday, May 10, 2017

A new hydrogen-based phase change material open-cycle micro engine [International Journal of Hydrogen Energy]

Photovoltaic module temperature stabilization with the use of phase change materials [Solar Energy]

A review of salt hydrates for seasonal heat storage in domestic applications [Applied Energy]

Shape-stabilized composite phase change materials with high thermal conductivity based on stearic acid and modified expanded vermiculite [Renewable Energy]

Experimental investigation of a latent heat storage for solar cooling applications [Applied Energy]

Novel CFD-based numerical schemes for conduction dominant encapsulated phase change materials (EPCM) with temperature hysteresis for thermal energy storage applications [Energy]

Performance evaluation of a novel solar photovoltaic–thermal collector with dual channel using microencapsulated phase change slurry as cooling fluid [Energy Conversion and Management]

Research roundup: Expanded graphite/adipic acid composite PCMs; nanomagnetite enhanced paraffin; more

Ben Welter - Friday, April 28, 2017

From Journal of Thermal Analysis and Calorimetry:

Preparation and thermal cycling of expanded graphite/adipic acid composite phase change materials

From RSC Advances:

Phase change materials of fatty amine-modified silicate clays of nano layered structures
Myristic acid-hybridized diatomite composite as a shape-stabilized phase change material for thermal energy storage

From 4th Sustainable Thermal Energy Management International Conference:

Domestic thermal storage requirements for heat demand flexibility

From Smart Materials and Nondestructive Evaluation for Energy Systems:

Novel dynamic thermal characterization of multifunctional concretes with microencapsulated phase change materials

From Digest Journal of Nanomaterials and Biostructures:

Nanomagnetite Enhanced Paraffin for Thermal Energy Storage Applications [pdf]

From Energy Procedia:

Solar Thermal Energy with Molten-salt Storage for Residential Heating Application

From Solar Energy:

Performance study and analysis of an inclined concentrated photovoltaic-phase change material system

From Energy:

Preparation, thermal properties and thermal reliability of a novel mid-temperature composite phase change material for energy conservation

From Applied Thermal Engineering:

Investigation on the thermal performance of a high-temperature latent heat storage system

From Cement and Concrete Composites:

Numerical simulations to quantify the influence of Phase Change Materials (PCMs) on the early- and later-age thermal response of concrete pavements

From International Journal of Refrigeration:

Performance study on air-cooled household refrigerator with cold storage phase change materials

From Energy and Buildings:

Novel thermosetting phase change materials with polycarbonatediol based curing agent as supporting skeleton for thermal energy storage 

From Journal of Cleaner Production:

Improving thermal response of lightweight timber building envelopes during cooling season in three European locations 

Research roundup: Cenospheres in concrete; form-stable composites with polyacrylic; rice bran distilled fatty acid; more

Ben Welter - Thursday, April 13, 2017

Numerical studies on thermal and electrical performance of a fully wetted absorber PVT collector with PCM as a storage medium [Renewable Energy]

Integrating phase change materials into concrete through microencapsulation using cenospheres [Cement and Concrete Composites]

Testing and performance analysis of micro encapsulated rice bran distilled fatty acid [International Journal of Computer Aided Engineering and Technology]

Enhanced thermal management with microencapsulated phase change material particles infiltrated in cellular metal foam [Energy]

Thermal performance study of form-stable composite phase change material with polyacrylic [AIP Conference Proceedings]

Design and Preparation of Carbon Based Composite Phase Change Material for Energy Piles [Materials]

Single-walled carbon nanotube for shape stabilization and enhanced phase change heat transfer of polyethylene glycol phase change material [Energy Conversion and Management]

Applications of Nanocomposite-Enhanced Phase-Change Materials for Heat Storage [Materials Science Forum]

Fatty acids and related phase change materials for reliable thermal energy storage at moderate temperatures [Solar Energy Materials and Solar Cells]

A study of a eutectic salt of lithium nitrate and sodium chloride (87–13%) for latent heat storage [Solar Energy Materials and Solar Cells]

Thermal stabilization and permanent deformation resistance of LWA/PCM-modified asphalt road surfaces [Construction and Building Materials]

Research roundup: Capsule in shape of red blood cell; helical fin; graphene-enhanced enhanced myo-inositol; more

Ben Welter - Wednesday, March 29, 2017

Thermal performance analysis of a novel PCM capsule in red blood cell shape [Applied Thermal Engineering]

Experimental demonstration, modeling and analysis of a novel latent-heat thermal energy storage unit with a helical fin [International Journal of Heat and Mass Transfer]

Preparation, characterization and thermal properties of fatty acid eutectics/bentonite/expanded graphite composites as novel form–stable thermal energy storage materials [Solar Energy Materials and Solar Cells]

Parametric study and approximation of the exact analytical solution of the Stefan problem in a finite PCM layer in a steady periodic regime [International Communications in Heat and Mass Transfer]

Synthesis, characterization and applications of microencapsulated phase change materials in thermal energy storage [Energy and Buildings]

Graphene nanoplatelets enhanced myo-inositol for solar thermal energy storage [Thermal Science and Engineering Progress]

Patent application: Composite foam and methods of preparation and use

Ben Welter - Thursday, March 23, 2017

U.S. patent application 20170072604 (applicant Empire Technology Development LLC, Wilmington, Del.):

"Composite foams having cells containing shape-stabilized phase change material (ss-PCM) particles are described. Composite foams may be made by contacting a plurality of ss-PCM particles and one or more pre-polymer reactants, wherein each ss-PCM particle can form a nucleation site for foam cell generation. The composite foams may be used in regulating the temperature of an article wherein the foam undergoes a phase transition as the surrounding temperature of the article approaches the foam's phase transition temperature. The thermostatic material may exchange heat with the article during the phase transition, resulting in regulation of the temperature of the article. The composite foams may be used as a thermostatic packaging material having a cavity for storing goods."

http://www.freepatentsonline.com/20170072604.pdf