Phase Change Matters RSS


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 We'll select the best and post the answers here each week.




Research roundup: Waste heat extraction; thermal sintering Pickering emulsion-based colloidosomes; more

Ben Welter - Tuesday, April 18, 2017

Micro-encapsulated phase change material (MPCM) slurries: Characterization and building applications [Renewable and Sustainable Energy Reviews]

Coupling waste heat extraction by phase change materials with superheated steam generation in the steel industry [Energy]

Large-scale high-temperature solar energy storage using natural minerals [Solar Energy Materials and Solar Cells]

Hierarchical nano-activated silica nanosheets for thermal energy storage [Solar Energy Materials and Solar Cells]

Microencapsulation through thermal sintering Pickering emulsion-based colloidosomes [Soft Matter]

Preparation of polyurea microcapsules containing phase change materials in a rotating packed bed [RSC Advances]

Dynamic measurement of the thermal conductivity of phase change materials in the liquid phase near the melting point [International Journal of Heat and Mass Transfer]

Investigation of Energy Performance in Conventional and Lightweight Building Components with the use of Phase Change Materials (PCMS): Energy Savings in Summer Season [Procedia Environmental Sciences]

Novel synthesis of cobalt/poly vinyl alcohol/gamma alumina nanocomposite for catalytic application [Applied Physics A]

Research roundup: Solar PCM storage wall system; novel caprylic acid/nonanoic acid mix; double glazing units; more

Ben Welter - Monday, April 17, 2017

Experimental study of a modified solar phase change material storage wall system [Energy]

A novel binary mixture of caprylic acid/nonanoic acid as latent heat storage for air conditioning and cooling [Energy and Buildings]

A General Method for Retrieving Thermal Deformation Properties of Microencapsulated Phase Change Materials or Other Particulate Inclusions in Cementitious Composites [Materials and Design]

Effect of PCM thickness and melting temperature on thermal performance of double glazing units [Journal of Building Engineering]

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]

PCM briefing: Trump budget 'just not correct' on ARPA-E; Croda's Kevin Bozec among panelists at Plant Based Summit

Ben Welter - Thursday, March 30, 2017

Ice Energy and Horizon Solar Power have completed the installation of a solar-plus-ice-battery-storage system at Palm Springs Cultural Center in California’s Coachella Valley. The system, which replaced an aging HVAC system, comprises 73.6 kW of solar panels and five Ice Bear 30s.

• The Trump administration's budget blueprint is "just not correct" about the function of the Advanced Research Projects Agency-Energy, its former director said this week. The blueprint eliminates all ARPA-E funding "because the private sector is better positioned to finance disruptive energy research and development and to commercialize innovative technologies." But agency was created just for stages of research and development that the private sector does not finance, said Ellen Williams, the agency's director from 2014 until January 2017.

Dow Chemical and DuPont won the blessing of the European Union for their $130 billion merger by agreeing to sell substantial assets, including key research and development activities.

• The global PCM market is expected to see a compound annual growth rate of 19.9 percent over the next five years, according to a new market research from Mordor Intelligence, "Global Phase Change Material Market-Segmented by Material Type, Product Type, Application, and Geography-Trends and Forecasts (2017-2022)." 

Kevin Bozec, marketing coordinator at Croda, is among the presenters at the Plant Based Summit in Lille, France, April 25-27. He will discuss Crodatherm phase change materials in a session on new materials. To register for the conference and trade show, visit

GSA Business offers a closer look at the leadership transition at Alexium International Group Ltd., the company that took its flame-retardant material and PCM-based cooling fabrics to commercial markets in 2016. 

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]

Research roundup: Fast charging with expanded graphite; rebar corrosion in PCM-enhanced concrete; hybrid cooling vest; more

Ben Welter - Tuesday, March 28, 2017

Fast charging of thermal energy storage systems enabled by phase change materials mixed with expanded graphite [International Journal of Heat and Mass Transfer]

Synthesis and characterization of a narrow size distribution nano phase change material emulsion for thermal energy storage [Solar Energy]

Analysis of the effects of use of thermal energy storage device (TESD) in solar air heater [Alexandria Engineering Journal]

Experiment and simulation of thermal management for a tube-shell Li-ion battery pack with composite phase change material [Applied Thermal Engineering]

Novel model for the prediction of SSLE temperatures and crystallization paths of any mixture containing palmitic, stearic, oleic, linoleic and linolenic acid [Thermochimica Acta]

A review on recent advancements in photovoltaic thermal techniques [Renewable and Sustainable Energy Reviews]

A comparative study on corrosion behavior of rebar in concrete with fatty acid additive as phase change material [Construction and Building Materials]

Novel phase change materials based on fatty acid eutectics and triallyl isocyanurate composites for thermal energy storage [Journal of Applied Polymer Science]

Optimal cooling intervention for construction workers in a hot and humid environment [Building and Environment]

PCM briefing: India startup wins Energy Transition award; new market research on thermal energy storage

Ben Welter - Monday, March 27, 2017

Thermal Energy Service Solutions, maker of a PCM-based "plug-and-chill" refrigeration system, was one of six startup companies honored at Tech Festival 2017 in Berlin last week. The Indian company's cooling technology is designed to reduce the use of fossil fuels in storing and transporting food. The Startup Energy Transition Awards competition, sponsored by the German Energy Agency, drew more than 500 applications from 66 countries.

Machine learning tools can help researchers analyze sustainable products and chemicals more easily, but as with all computing, data quality is important, writes Christina Valimaki, senior director of chemicals at Elsevier's R&D Solutions.

• New from MarketsandMarkets: "Thermal Energy Storage Market by Technology (Sensible, Latent, and TCS), Storage Material (Water, Molten Salt, and PCM), Application (Power Generation, District Heating & Cooling, and Process Heating & Cooling), End-User, and Region - Global Forecast to 2022"

• Researchers at Chalmers University of Technology in Gothenburg, Sweden, have shown that it is possible to convert solar energy directly into energy stored in the bonds of a chemical fluid. The system is based on the organic compound norbornadiene, which upon exposure to light converts into quadricyclane.

Research roundup: PCM compatibility with metals, plastic; desiccant packet for cooling vest; paraffin viscosity; more

Ben Welter - Thursday, March 23, 2017

Investigation of the corrosive properties of phase change materials in contact with metals and plastic [Renewable Energy]

Preparation and thermal properties of SAT-CMC-DSP/EG composite as phase change material [Applied Thermal Engineering]

A numerical study on the usage of phase change material (PCM) to prolong compressor off period in a beverage cooler [Energy Conversion and Management]

Abilities and limitations of thermal mass activation for thermal comfort, peak shifting and shaving: A review [Building and Environment]

Corrosion effect of phase change materials in solar thermal energy storage application [Renewable and Sustainable Energy Reviews]

A review for phase change materials (PCMs) in solar absorption refrigeration systems [Renewable and Sustainable Energy Reviews]

Sodium nitrate – Diatomite composite materials for thermal energy storage [Solar Energy]

Innovative PCM-desiccant packet to provide dry microclimate and improve performance of cooling vest in hot environment [Energy Conversion and Management]

Heat transfer study of phase change materials with graphene nano particle for thermal energy storage [Solar Energy]

Energy performance evaluation of heat-storage gypsum board with hybrid SSPCM composite [Journal of Industrial and Engineering Chemistry]

Empirical equation to estimate viscosity of paraffin [Journal of Energy Storage]

Yearly energy performance of a photovoltaic-phase change material (PV-PCM) system in hot climate [Solar Energy]

Research roundup: Microcapsule-based composites; porous cellulose acetate films; underfloor heating; more

Ben Welter - Tuesday, March 07, 2017

Experimental study on effective thermal conductivity of microcapsules based phase change composites [International Journal of Heat and Mass Transfer]

Multi-objective RSM Optimization of Fin Assisted Latent Heat Thermal Energy Storage System Based on Solidification Process of Phase Change Material in Presence of Copper Nanoparticles [Applied Thermal Engineering]

Buildings cooling: An experimental study of phase change materials storage for low-energy buildings [2017 International Conference on Communication, Control, Computing and Electronics Engineering ]

Aluminum Mesh and Phase-Change Characteristics of n-Octadecane for Thermal Energy Storage [Journal of Thermophysics and Heat Transfer]

Analytical analysis of latent heat thermal energy storage model for solar thermal power plants [14th International Bhurban Conference on Applied Sciences and Technology]

Analysis of graphene-encapsulated polymer microcapsules with superior thermal and storage stability behavior [Polymer Degradation and Stability]

Experimental and numerical investigations on the thermal performance of building plane containing CaCl2·6H2O/expanded graphite composite phase change material [Applied Energy]

Fabrication and characterization of porous cellulose acetate films by breath figure incorporated with capric acid as form-stable phase change materials for storing/retrieving thermal energy [Fibers and Polymers]

In-situ preparation of a shape stable phase change material [Renewable Energy]

Proposal of a PCM Underfloor Heating System Using a Web Construction Method [pdf] [International Journal of Polymer Science]

PCM briefing: Encapsulation market projected to hit $17.9 billion; report casts shadow on solar-plus-storage

Ben Welter - Monday, February 27, 2017

• The global microencapsulation market is expected to reach $17.94 billion by 2025, according to a new report from Grand View Research. Microtek Laboratories, Encapsys, BASF and Aveka Inc. are among the companies profiled in the report, "Microencapsulation Market Estimates & Trend Analysis By Application (Pharmaceutical, Household Product, Agrochemical, Food Additive, Phase Change Material), By Region (North America, Europe, Asia Pacific, RoW), And Segment Forecasts, 2014 - 2025"

• A Rochester Institute of Technology study casts a shadow on the economics of residential solar-plus-storage. The conclusion: A customer must face high electricity bills and unfavorable net metering or feed-in policies for "grid defection" to work. 

• New from Transparency Market Research: "Reusable Ice Packs Market - Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2016-2024"

• New from QYResearch: "China Bio-Based Phase Change Materials Market Research Report 2017"

A one-day workshop on energy storage for building, solar and wind sectors will be held March 4 at Anna University in Chennai, India. Topics include integration of PCMs for passive cooling in buildings, energy-efficient cool thermal energy storage systems and thermal energy storage technologies for solar applications. 

The National Law Review has posted a detailed update on implementation of the newly revised Toxic Substances Control Act. A key takeaway: Resource and budgetary constraints under the Trump administration could have an impact on the Environmental Protection Agency’s ability to implement the new provisions.

• The latest issue of Chemical & Engineering News features a piece on “natural catalysts” derived from wild plants, mud and earthworms. 

Samit Jain, director at Pluss Advanced Technologies, talks about his company’s pharma logistics products in an interview with India's Financial Express.