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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.




HSM introduces CoolACTIVE foam for bedding industry

Ben Welter - Monday, January 19, 2015

Furniture maker HSM of Hickory, N.C., has announced the introduction of CoolACTIVE foams for the bedding industry. The PCM-laden foam is designed to diffuse body heat. The product comes in three forms: a viscoelastic memory foam that offers 25 percent heat transference, a gel that offers 35 percent heat transference and a foam that incorporates graphite particles and offers 40 percent heat transference.

Research roundup: Zigzag plate configuration; accelerated aging for TES; stacked rectangular cavities; more

Ben Welter - Monday, January 19, 2015

  • Thermal energy charging behaviour of a heat exchange device with a zigzag plate configuration containing multi-phase-change-materials [Applied Energy]

  • Thermal Reliability of Myristic Acid/Palmitic Acid/Sodium Laurate Eutectic Mixture: A Feasibility Study of Accelerated Aging for Thermal Energy Storage Application [Energy Procedia]

  • Experimental study of the heat transfer through a vertical stack of rectangular cavities filled with phase change materials [Applied Energy]

  • Development and evaluation of graphite nanoplate (GNP)-based phase change material for energy storage applications [International Journal of Energy Research]
  • Outlast technology cools Puma's new golf shoe

    Ben Welter - Thursday, January 15, 2015

    Puma's TitanTour golf shoePuma's new TitanTour golf shoe features temperature-regulating phase change material in its lining. The Outlast technology is designed to keep the wearer comfortable by absorbing, storing and releasing heat as conditions demand.
    The shoe, set for release Feb. 1, retails for $190. Rickie Fowler, Jonas Blixt, Will MacKenzie and Jesper Parnevik are among the pro golfers set to wear it.

    IRENA to launch 'Google of renewable energy'

    Ben Welter - Tuesday, January 13, 2015

    CleanTechnica's Zachary Shahan reports that the International Renewable Energy Agency is ready to unveil REsource, a research tool he describes as "akin to a Google of renewable energy." 

    IRENA says the goal is to provide "relevant, reliable and timely information on renewable energy market statistics, potentials, policies, finance, technology costs and benefits, innovations and education."  Screenshots of the tool show a Google-like main screen that will allow visitors to tap IRENA's "vast knowledge base" for information by source, energy type and country.  

    The tool is expected to be launched at IRENA's 5th Assembly in Abu Dhabi next week.

    High growth in PCM demand seen for shipping, transportation, textiles, electronics

    Ben Welter - Tuesday, January 13, 2015

    Companies and Markets is projecting that demand for advanced phase change material will reach $1.4 billion by 2019. Europe will remain the largest market, followed by the Americas. 

    "Building & construction is the major application for the advanced PCM market," the report said. "It accounted for 20% of the market share in terms of volume, in 2013. Shipping, packaging & transportation, textiles, and electronic applications of advanced PCM are projected to experience high growth among the applications between 2014 and 2019."

    Research roundup: Paraffin in copper foam; microencapsulated paraffin with poly shell; more

    Ben Welter - Monday, January 12, 2015

  • Experimental analysis of phase change phenomenon of paraffin waxes embedded in copper foams [International Journal of Thermal Sciences]

  • Preparation and characterization of flame retardant phase change materials by microencapsulated paraffin and diethyl ethylphosphonate with poly (methacrylic acid-co-ethyl methacrylate) shell [Journal of Applied Polymer Science]

  • Effect of heating position on thermal energy storage in cavity with/without open-cell metallic foams [Experimental Heat Transfer]

  • Thermal impact of aquifer thermal energy storage systems: a case study in the Netherlands, combining monitoring and modeling [Hydrogeology Journal]
  • Research roundup: N-hexadecanol microencapsulation; flight data recorders; paraffin-based nanofluid; more

    Ben Welter - Thursday, January 08, 2015

  • Microencapsulation of n‐hexadecanol by in situ polymerization of melamine–formaldehyde resin in emulsion stabilized by styrene–maleic anhydride copolymer [International Journal of Energy Research]

  • Thermal protection design for flight data recorders [International Heat Transfer Conference 15]

  • Improving solidification structure of paraffin-based nanofluid by surfactant and ultrasound [International Heat Transfer Conference 15]

  • PCM-based energy recovery from electric arc furnaces [Applied Energy]
  • Job posting: Sales Engineer

    Ben Welter - Wednesday, January 07, 2015

    Entropy Solutions is hiring. The successful applicant for Sales Engineer must possess a combination of technical, sales and relationship-building skills. An engineering degree, preferably mechanical, is required, along with a minimum of five years of related business-to-business experience. He or she will work closely with the VP of Business Development, providing direct support to Entropy’s key customers, channel partners and vendors, while taking the lead in managing incoming inquiries.

    20% CAGR projected for advanced PCMs

    Ben Welter - Wednesday, January 07, 2015

    The global market for advanced PCMs is projected to reach $1.47 billion by 2019, according to That's a compound annual growth rate of more than 20 percent over the next five years. The market for thermal energy storage PCMs is projected to register a CAGR of 22 percent in that period.

    "Organic PCM are projected to have the higher growth rate than inorganic PCM due to the higher prices and ease of microencapsulation for organic PCM," according to the report.