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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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A primer on temperature-regulating mattress components

Ben Welter - Monday, February 02, 2015

BedTimes magazine, "the business journal for the sleep products industry," offers a 2,000-word primer on the challenge of regulating temperatures in today's all-foam and hybrid mattresses. 

“Companies are becoming more innovative with the applications they use PCMs in — from fabrics to foams to gels and fill,” said Joe Wehrle, director of sales for Microtek Laboratories Inc. “The mattress marketplace is experiencing the cooling/warming effects that PCM technology provides, helping to create the ‘perfect sleep experience’ that end users value. Every day, new and inventive products are being introduced in the bedding segment which capitalize on the thermal benefits of phase change materials.”

http://bedtimesmagazine.com/2014/02/a-primer-on-temperature-regulating-components-for-mattresses

Research roundup: Porous MgO material; gravity-assisted heat pipe; double-skin facade; more

Ben Welter - Monday, February 02, 2015

  • Porous MgO Material with Ultrahigh Surface Area as the Matrix for Phase Change Composite [Thermochimica Acta]

  • Study on the thermal storage performance of a gravity-assisted heat-pipe thermal storage unit with granular high-temperature phase-change materials [Energy]

  • Energy performance of a ventilated double skin facade with PCM under different climates [Energy and Buildings]

  • Multi-mode heat transfer analysis during freezing of an encapsulated storage medium [International Journal of Heat and Mass Transfer]

  • Fabrication and Performances of Microencapsulated Palmitic Acid with Enhanced Thermal Properties [Energy Fuels]

  • Research roundup: Melamine resin shell; frustum-shaped storage units; more

    Ben Welter - Monday, February 02, 2015

  • Microencapsulation mechanism and size control of fragrance microcapsules with melamine resin shell [Colloids and Surfaces]

  • Enhanced heat transfer for PCM melting in the frustum-shaped unit with multiple PCMs [Journal of Thermal Analysis and Calorimetry]

  • Diurnal thermal analysis of microencapsulated PCM-concrete composite walls [Energy Conversion and Management]

  • Using Generalized Integral Transforms to solve a perturbation model for a packed bed thermal energy storage tank [International Journal of Heat and Mass Transfer]

  • Numerical modeling of aquifer thermal energy efficiency under regional groundwater flow: a case study at Oslo Airport [Hydrology Research]

  • Research roundup: Composite PCM in cement-paste panel; PCM in solar greenhouse; more

    Ben Welter - Tuesday, January 20, 2015

  • Composite of Coal-Series Kaolinite and Capric–Lauric Acid as Form-Stable Phase Change Material [Energy Technology]

  • Thermal Environment Regulating Effects of Phase Change Material in Chinese Style Solar Greenhouse [Energy Procedia]

  • Performance Demonstration and Evaluation of the Synergetic Application of Thermochromic Window and Phase Change Material in Passive Buildings [Energy Procedia]

  • Theoretical Analysis on the Solid Sensible and Latent Heat Storage in Building Cooling Heating and Power Systems [Energy Procedia]

  • Comparison of Thermal Performance of BCHP System with Latent Thermal Energy Storage in Different Locations [Energy Procedia]

  • Influence of Position of Thermal Energy Storage with Different Effectiveness on the Performance of BCHP System [Energy Procedia]

  • Optimizing the Performance of Ice-storage Systems in Electricity Load Management Through a Credit Mechanism: An Analytical Work for Jiangsu, China [Energy Procedia]

  • On the Natural Convection Enhancement of Heat Transfer during Phase Transition Processes of Solid-liquid Phase Change Materials [Energy Procedia]
  • 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]
  • 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 ReportsnReports.com. 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.

    http://www.reportsnreports.com/reports/237733-advanced-phase-change-material-pcm-market-by-type-inorganic-organic-bio-based-application-building-construction-cold-storage-hvac-textile-thermal-energy-storage-electronics-global-trends-forecast-to-2018.html

    Research roundup: Slurry PCMs in solar heating system; content-stable composites; TES in cold climates; more

    Ben Welter - Friday, January 02, 2015

  • Potentialities of a Low Temperature Solar Heating System Based on Slurry Phase Change Materials [Energy Procedia]

  • Development of content-stable phase change composites by infiltration into inorganic porous supports [Solar Energy Materials and Solar Cells]

  • A Review of the Performance of Buildings Integrated with Phase Change Material: Opportunities for Application in Cold Climate [Energy Procedia]

  • The Effectiveness of PCM Wallboards for the Energy Refurbishment of Lightweight Buildings [Energy Procedia]

  • Temperature Regulation and Thermal Energy Storage Potential of Phase Change Materials Layer Contained at the Back of a Building Integrated Photovoltaic Panel [30th International Plea Conference, CEPT University, Ahmedabad, India] [pdf]