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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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Patent application: Temperature control device with PCM

Ben Welter - Monday, December 10, 2018

U.S. patent application 20180347869 (inventors Anthony Boule, Toulouse, France; Pierre Lapalus, Marseille, France):

"The invention relates to a portable device for regulating the temperature of an element, comprising: an engagement part adapted to be placed in contact with the element, a temperature regulation unit comprising a thermoelectric module having two sides (41, 42), a first side (41) of the thermoelectric module being thermally coupled with the engagement part (2). The device further comprises: a reception part (5) adapted to removably receive a phase change material (PCM) (6), a second side (42) of the thermoelectric module being thermally coupled with the reception part (5), such that a phase change material (PCM) (6) provided in the reception part will also be thermally coupled with the second side (42) of the thermoelectric module."

http://www.freepatentsonline.com/20180347869.pdf

PCM briefing: Virginia Tech takes first place in Solar Decathlon; Pluss is expanding R&D team

Ben Welter - Monday, December 10, 2018

Virginia Tech's FutureHAUS team has won first place in the 2018 Solar Decathlon Middle East, a competition organized by the U.S. Department of Energy and the United Arab Emirates’ Dubai Electricity & Water Authority. The lone American team topped 14 other finalists and more than 60 total entrants. The team said its use of phase change material in the solar-powered home set it apart from the competition. Look for an interview with Joseph Wheeler, an architecture professor who directs Virginia Tech's FutureHAUS research program, in the next issue of Phase Change Matters.

• Via LinkedIn: "Pluss Advanced Technologies Pvt. Ltd. is hashtag#Expanding its hashtag#Research team for hashtag#PCM Business. Chemistry Graduates with 0-2 years of experience preferred. However, others will be considered too. Usual job descriptions apply! Want to understand more about the opportunity? Please write to Ruchika Garg at jobs@pluss.co.in. Hurry! The vacancies are limited."

• U.S. and German researchers who have studied a PCM alloy made from germanium, antimony and tellurium say liquid water and liquid PCMs may have the same underlying physics. "The experiments reveal that the so-called Stokes-Einstein relation, which connects the viscosity of a liquid to the diffusion coefficient of its molecules, appears to break down above the melting point of the material and at very low viscosities – just as in water," Physics World reports. "The result will be important when making phase-change memories from GeSbTe alloys and related PCMs in the future."

CleanTechnica's Tina Casey takes a deep dive into the U.S. Department of Energy's efforts to develop next-generation, long-duration energy storage systems. Her conclusion: "The new R&D program practically guarantees that the hurt will continue for coal miners, their families and their communities long after Trump leaves office."  

kW Engineering of Oakland, Calif., offers tips on how to use a famously complex energy modeling program: "Best Practices for Successful Building Energy Modeling with EnergyPlus." 

Patent application: Device and method for cooling a liquid

Ben Welter - Friday, December 07, 2018

U.S. patent application 20180347870 (applicant Gerrit Sonnenrein, Paderborn, Germany):

"A device, for cooling a liquid, especially a beverage, comprising a cold accumulator and a thermal line, the cold accumulator and the liquid to be cooled being thermally connected by means of the thermal line, and the cold accumulator comprising a phase change material, the device also comprising means for dissipating heat from at least the thermal line, and the cold accumulator comprising a carrier material into which the phase change material is integrated."

http://www.freepatentsonline.com/20180347870.pdf

Patent application: In-flight service cart

Ben Welter - Thursday, December 06, 2018

DHL in-flight cart patent drawingU.S. patent application 20180346122 (applicants Tower Cold Chain Solutions Ltd. and DHL Supply Chain Ltd., Great Britain):

"An in-flight service cart for use on an aircraft for maintaining a payload such as foodstuffs and the like within a selected temperature range, said in-flight service cart including: a housing (3) having a storage volume; and at least one thermally insulated container (5) removably mounted within the housing, said container having an outer casing, a thermally conductive inner casing, thermal insulation located between the outer casing and the inner casing, said thermal insulation including at least one vacuum insulation panel, a payload volume for storing foodstuffs, an opening providing access to the payload volume, a closure member for closing the opening, at least one thermal energy storage unit located within the inner casing, said thermal energy storage unit(s) including a phase change material that is arranged to change phase at a temperature greater than or equal to -10° C.; wherein the inner casing and closure member  define the payload volume for storing the foodstuffs, and the thermal energy storage unit(s) is positioned in thermal contact with the inner casing, the arrangement being such that the inner casing provides a thermally conductive pathway for conducting heat entering the container to the thermal energy storage unit."

http://www.freepatentsonline.com/20180346122.pdf

Patent application: Shipping system for temperature-sensitive materials

Ben Welter - Wednesday, December 05, 2018

Cold Chain Technologies patent drawingU.S. patent application 20180328644 (applicant Cold Chain Technologies, Franklin, Mass.):  

"Shipping system for storing and/or transporting temperature-sensitive materials. In one embodiment, the system includes an outer box having four side walls, bottom closure flaps, and top closure flaps. A vacuum insulated panel (VIP) is detachably coupled to one of the top closure flaps and is removably covered by a cover. An insulation unit is removably positioned within the outer box, the insulation unit including a plurality of VIPs arranged to define a cavity bounded by a bottom wall and four side walls. A disposable liner is removably mounted on the insulation unit. The liner may be a thermoformed sheet and may cover the interior and top surfaces of the insulation unit. A plurality of temperature-control members and a product box may be removably positioned in the liner."

http://www.freepatentsonline.com/20180328644.pdf

Research roundup: Dynamic building envelope; multilayer glazing facades; spherical capsule with pin-fins; more

Ben Welter - Wednesday, December 05, 2018

From Applied Energy:

Form-stable and thermally induced flexible composite phase change material for thermal energy storage and thermal management applications
Influence of the storage period between charge and discharge in a latent heat thermal energy storage system working under partial load operating conditions
Dynamic building envelope with PCM for cooling purposes – Proof of concept

From Air Force Research Laboratory:

High Energy Advanced Thermal Storage (HEATS) [pdf]

From Solar Energy:

Synthesis and characterization of sensible thermal heat storage mixture containing phosphate compound of cobalt and sodium
Thermal performance of non-ventilated multilayer glazing facades filled with phase change material

From Applied Thermal Engineering:

Charging nanoparticle enhanced bio-based PCM in open cell metallic foams: An experimental investigation
Thermal performance analysis and optimization of a spherical PCM capsule with pin-fins for cold storage
A phase change material with enhanced thermal conductivity and secondary heat dissipation capability by introducing a binary thermal conductive skeleton for battery thermal management

From Materials:

Characterization of MgCl2·6H2O-Based Eutectic/Expanded Perlite Composite Phase Change Material with Low Thermal Conductivity

From Solar Energy Materials and Solar Cells:

Size controlled lauric acid/silicon dioxide nanocapsules for thermal energy storage

From Energy Procedia:

Life Cycle Assessment of thermal energy storage materials and components

From MATEC Web of Conferences:

A Numerical Method for Analysing Heat Conduction in Composites Containing Encapsulated Phase Change Materials [pdf]

From Journal of Building Engineering:

Agenda set for 6th Swiss symposium on thermal energy storage

Ben Welter - Monday, December 03, 2018

The agenda is confirmed for the 6th Swiss Symposium Thermal Energy Storage, to be held in Lucerne, Switzerland, on Jan. 25, 2019. The symposium will focus on seasonal storage systems and the sector coupling of power and heat. Here are the speakers and topics:

• "Heat Storage in Switzerland": Elimar Frank, Frank Energy GmbH, Switzerland

• "Thermal Energy Storage, one Key Element to link Energy Sectors": Peter Schossig, Fraunhofer Institute for Solar Energy Systems ISE, Germany

• "Enhanced Phase-Change Materials for Heat-Storage applications": Colin Pulham, School of Chemistry, University of Edinburgh, United Kingdom

• "High-Temperature Latent Heat Storage and Applications": Dan Bauer, German Aerospace Center (DLR), Stuttgart, Germany

• "High-Temperature Phase Change Materials": Yulong Ding, University of Birmingham, United Kingdom

• "Network Convergence and Sector Coupling at St. Galler Stadtwerke": Simon Schoch, St. Galler Stadtwerke, Switzerland

• "Heat4Cool – Multienergy Solutions for Heating & Cooling": Marcello Aprile, Politecnico di Milano and Philipp Schütz, Lucerne School of Engineering and Architecture, Switzerland

• "Large-Scale Thermal Energy Storage and Multi-Energy Networks in Vienna": Robert Hammerling, Wien Energie GmbH, Austria

• "Current and Future Use of Seasonal Thermal Storage in Ground Heat Exchangers": A Swedish Perspective: José Acuña, KTH Royal Institute of Technology, Sweden

• "Avoided System Cost for Grid Reinforcement and Peaker Plants by using Ecovat Seasonal Thermal Energy Storage": Aris de Groot, Ecovat Renewable Energy Technologies, Netherlands

• "Optimization of Seasonal Thermal Energy Storage Systems for Buildings": Willy Villasmil, Lucerne School of Engineering and Architecture, Switzerland

• "Seasonal Hot Water Storage with Vacuum Super Insulation": Matthias Demharter, Bayerisches Zentrum für Angewandte Energieforschung ZAE, Germany

The registration fee is 300 Swiss francs. Lunch is included. The 2018 symposium drew more than 100 participants.

https://www.hslu.ch/en/lucerne-school-of-engineering-architecture/campus/veranstaltungen/2019/01/25/cctes-sstes19