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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 monthly PCM newsletter. Or join the discussion on LinkedIn.

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Research roundup: Polyurethane/docosane microcapsules; district heating; nanoparticles; water tank shapes; more

Ben Welter - Monday, June 29, 2015

New Polyurethane/Docosane Microcapsules as Phase-Change Materials for Thermal Energy Storage [Chemistry - A European Journal]

On-sun demonstration of a 750° C heat transfer fluid for concentrating solar systems: Dense particle suspension in tube [Solar Energy]

Thermodynamic analysis and performance assessment of an integrated heat pump system for district heating applications [Applied Thermal Engineering]

Preparation and properties of lauric acid/diatomite composites as novel form-stable phase change materials for thermal energy storage [Energy and Buildings]

A New Phase Change Material Based on Potassium Nitrate with Silica and Alumina Nanoparticles for Thermal Energy Storage [pdf] [Nanoscale Research Letters]

Comparative study of the influences of different water tank shapes on thermal energy storage capacity and thermal stratification [Renewable Energy]

Energy Storage Applications | An Introduction to Phase Change Materials [Thermal Energy Storage Using Phase Change Materials]

Assessing the feasibility of incorporating phase change material in hot mix asphalt [Sustainable Cities and Society]

Research roundup: PCM and cement; nanotube composites; expanded graphite; more

Ben Welter - Thursday, June 25, 2015

Application of Phase Change Materials to Improve the Thermal Performance of Cementitious Material [Energy and Buildings]

Study on the phase change thermal storage performance of palmitic acid/carbon nanotubes composites [Composites Part A: Applied Science and Manufacturing]

Positive influence of expanded graphite on the physical behavior of phase change materials based on linear low-density polyethylene and paraffin wax [Thermochimica Acta]

CO2 mitigation accounting for Thermal Energy Storage (TES) case studies [Applied Energy]

Binary Solid-Liquid Equilibrium Systems Containing Fatty Acids, Fatty Alcohols and Triolein by Differential Scanning Calorimetry [Fluid Phase Equilibria]

Development of a numerical model for the reaction zone design of an aqueous sodium hydroxide seasonal thermal energy storage [Solar Energy]

Power plant cooling research focuses on tiny paraffin beads in 'rotary heat exchanger'

Ben Welter - Monday, June 22, 2015

Drexel University offers a detailed look at the novel dry-cooling technology being studied to reduce water use at thermoelectric plants. The research team, which includes Drexel, the University of Memphis, Evapco, WorleyParsons and the Electric Power Research Institute, is focusing on phase change material in the form of tiny wax beads:

PCM cooling unit"The group’s design uses large mesh disks, 20 meters in diameter, woven from quarter-inch-thick tubes filled with tiny bead-like capsules of paraffin just a few millimeters in diameter. The discs would be stacked 15 meters-high in a cylinder the team calls a 'rotary heat exchanger unit.' With the look of a sophisticated water wheel, the unit will have openings on the top and bottom for hot water to flow in, cooled water to drain out and ambient air to keep the system moving.

"As the hot water enters the unit from the steam condenser, the beads in the mesh will absorb the heat. The discs will continue to rotate as the water enters the unit. When the heated portion of the disc reaches the cooling side of the unit, ambient air is pumped in to let the beads release the heat before returning to the atmosphere outside the plant. The cooled beads spin back to the other side as the disc rotates, ready to repeat the process."

Research roundup: Fatty acid eutectics; cement-based TES; sonochemical fabrication of nanocapsules; more

Ben Welter - Wednesday, June 17, 2015

Synthesis and thermal properties of fatty acid eutectics and diatomite composites as shape-stabilized phase change materials with enhanced thermal conductivity [Solar Energy Materials and Solar Cells]

Study of cement-based thermal storage materials with fly ash [Thermochimica Acta]

A simple sonochemical method for fabricating poly(methyl methacrylate)/stearic acid phase change energy storage nanocapsules [Ultrasonics Sonochemistry]

Compatibility tests between solar salt and thermal storage ceramics from inorganic industrial wastes [Applied Energy]

PCM incorporation in a concrete core slab as a thermal storage and supply system: proof of concept [Energy and Buildings]

Research roundup: Mini-emulsion polymerization; microcapsules in garments; diesel engine waste heat recovery

Ben Welter - Tuesday, May 12, 2015

Poly(methyl methacrylate) copolymer nanocapsules containing phase-change material (n-dodecanol) prepared via miniemulsion polymerization [Journal of Applied Polymer Science]

Influences of the PCM Microcapsules on Thermal Properties of the Garment [pdf] [International Conference on Information Sciences, Machinery, Materials and Energy]

Experimental Investigation of a Cascaded Latent Heat Storage System for Diesel Engine Waste Heat Recovery [Energy Sources]

Research roundup: 'Red Brick' TES; rocks as filler material; thermoelectric space cooling; more

Ben Welter - Monday, May 04, 2015

Preparation and thermal characterization of composite “Paraffin/Red Brick” as a novel form-stable of phase change material for thermal energy storage [International Journal of Hydrogen Energy]

Stability testing of thermal oil in direct contact with rocks used as filler material for thermal energy storage in CSP power plants [Energy Procedia]

Improving the Thermochemical Energy Storage Performance of the Mn2O3/Mn3O4 Redox Couple by the Incorporation of Iron [ChemSusChem]

Experimental and Numerical Evaluation of Longitudinally Finned Latent Heat Thermal Storage Systems [Energy and Buildings]

Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol–gel method [Energy]

Theoretical study on effective thermal conductivity of salt/expanded graphite composite material by using fractal method [Applied Thermal Engineering]

Study of a Thermoelectric Space Cooling System Integrated with Phase Change Material [Applied Thermal Energy]

Research roundup: Expanded graphite with PCM; thermal cycle test; concrete with macroencapsulated PCM; more

Ben Welter - Tuesday, April 28, 2015

RT100/expand graphite composite phase change material with excellent structure stability, photo-thermal performance and good thermal reliability [Solar Energy Materials and Solar Cells]

Thermal Cycle Test of Binary Mixtures of Some Fatty Acids as Phase Change Materials For Building Applications [Energy and Buildings]

Development of structural–functional integrated concrete with macro-encapsulated PCM for thermal energy storage [Applied Energy]

Phase Change Materials—A Sustainable Way of Solar Thermal Energy Storage [pdf] [Energy Sustainability Through Green Energy]

Characterization and real-time testing of phase-change materials for solar thermal energy storage [Energy Research]

Latent Heat Thermal Storage (LHTS) for Energy Sustainability [Energy Sustainability Through Green Energy]


PCM market projected to reach $339 million in the Americas by 2019

Ben Welter - Thursday, April 09, 2015

The market for advanced phase change materials in the Americas will reach $339.56 million by 2019, according to the latest report from MicroMarket Monitor. That's a compound annual growth rate of 19.9% from 2014 to 2019. The report identifies the shipping, packaging and refrigeration segment as a key driver and attributes much of the growth to initiatives by the Emerging Technologies Coordinating Council, the National Renewable Energy Laboratory and other bodies.

MicroMarket Monitor is planning to release similar reports next month on the PCM markets in Asia-Pacific and Middle East-Africa. The Asia-Pacific market is expected to see a compound annual growth rate of 19.2 percent from 2013 to 2018. The Middle East-Africa market is expected see a CAGR of 11.9 percent in the same period.

http://www.micromarketmonitor.com/market/americas-advanced-phase-change-materials-3734986145.html

Steep growth projected for Europe's organic PCM market through 2018

Ben Welter - Wednesday, April 08, 2015

The European market for organic phase change materials is projected to see a compound annual growth rate of 20.4 percent from 2013 to 2018, according to the latest report from MicroMarket Monitor. Organic PCMs fall into two categories: paraffins (derived from petroleum) and fatty acids (derived from animal fat and plant oils). The report, to be released May 2, attributes much of the growth to new government rules aimed at reducing the emission of greenhouse gases.

http://www.micromarketmonitor.com/market/europe-organic-advanced-phase-change-materials-8730183541.html