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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.

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PureTemp 23 shows no corrosive effect on five metals tested in study

Ben Welter - Friday, December 26, 2014

PureTemp 23, one of 19 PureTemp phase change materials recently certified as 100 percent biobased by the U.S. Department of Agriculture, has been shown to have no corrosive effect on metals tested in a study by researchers from the University of Barcelona and the University of Lleida in Spain. The five metals tested were aluminum, copper, carbon steel, stainless steel 304 or stainless steel 316.

http://www.puretemp.com/stories/puretemp-23-shows-no-corrosive-effect-on-five-metals-tested-in-study

Research roundup: PCMs and indoor environments; spherical PCMs; silica aerogels; thermodynamic modeling

Ben Welter - Friday, December 26, 2014

  • Effect of phase change materials on indoor thermal environment under different weather conditions and over a long time [Applied Energy]

  • Prediction of Spherical Phase Change Material Temperature Using RBFNN Model [Applied Mechanics and Materials]

  • Alkylated Phase Change Composites for Thermal Energy Storage Based on Surface-Modified Silica Aerogels [Journal of Materials Chemistry A]

  • Simulation of the thermal and energy behavior of a composite material containing encapsulated PCM: Influence of the thermodynamical modeling [Applied Energy] 
  • Research roundup: Residential PCM system, concentrated solar, PAN/SA-LA/ZMS, heat pumps

    Ben Welter - Tuesday, December 23, 2014






    Research roundup: Hardened cement paste, energy storage containers, nanocomposites

    Ben Welter - Wednesday, December 17, 2014

  • Thermophysical and Mechanical Properties of Hardened Cement Paste with Microencapsulated Phase Change Materials for Energy Storage [Materials]

  • Thermal Performance Evaluation of Two Thermal Energy Storage Tank Design Concepts for Use with a Solid Particle Receiver-Based Solar Power Tower [Energies]

  • Experimental study on solving the blocking for the direct contact mobilized thermal energy storage container [Applied Thermal Engineering]

  • Thermal conductivity enhancement of lauric acid phase change nanocomposite in solid and liquid state with single-walled carbon nanohorn inclusions [Thermochimica Acta] 
  • Research roundup: Synthesized polymeric solid-solid PCMs, corrosion of metal containers and more

    Ben Welter - Friday, December 12, 2014

    Research roundup: Graphene aerogel, polyaniline-based polymer shells, smart composites and more

    Ben Welter - Tuesday, December 09, 2014

    New database to help PCM selection in construction

    Ben Welter - Friday, December 05, 2014

    Using CES Selector software, researchers in Spain have created a database of phase change materials to help engineers select the right PCM for thermal energy storage in buildings. More than 300 PCMs have been entered in the database, noting thermophysical properties such as melting temperature and melting enthalpy.

    According to an abstract of the research reported in Volume 57 of Energy Procedia: "This database can be completed in the future with other relevant properties ... such as chemical properties (durability in different media etc), reported density or viscosity at a given temperature or even cost of each material."

    The full report, "New database on phase change materials for thermal energy storage in buildings to help PCM selection," is available via ScienceDirect. 

    http://www.sciencedirect.com/science/article/pii/S1876610214016166

    You could even say it glows

    Ben Welter - Tuesday, November 25, 2014

    Rudolph Microencapsulation of PCMs typically involves a single purpose: thermal energy storage. What if you could make that material glow as well? That's what three researchers at the Beijing University of Chemical Technology set out to find. They designed and synthesized PCM microcapsules with an n-eicosane core and zirconium dioxide shell to attain the characteristics of latent-heat storage/release and photoluminescence. Potential applications include intelligent fibers and photosensitive devices.

    What PCMs are available for use in catalytic converters?

    Ben Welter - Friday, November 21, 2014

    Subramanian Sendilvelan of Bharath University in Chennai, India, asks, via ResearchGate: What phase change materials are available at 300˚C for use in catalytic converters? A professor at Chaitanya Bharathi Institute of Technology in Hyderabad suggests a 2012 paper on the use of PCMs in vehicles might be useful in exploring that topic.

    The science of phase change: It’s (more) complicated

    Ben Welter - Thursday, November 06, 2014

    Think you know how phase change works? You might need to rethink that. Researchers at Princeton, Peking University and New York University say the process is a lot more complex than previously known. "This research shows that phase changes can follow multiple pathways, which is counter to what we've previously known," explains Mark Tuckerman, a professor of chemistry and applied mathematics at NYU and one of the study's co-authors. "This means the simple theories about phase transitions that we teach in classes are just not right."