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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.

Two Entropy advisors, Dr. Mohammed Farid and Lucas B. Hyman, are pleased to take your questions about PCMs and thermal energy storage. Send your questions to bwelter@puretemp.com. We'll select the best and post the answers here each week.

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PCM briefing: Viking Cold Solutions lands deal in Phoenix; study finds ARPA-E is doing what it was designed to do

Ben Welter - Monday, June 19, 2017

Viking Cold Solutions has announced a collaboration between Salt River Project and Bashas' Supermarkets to install and evaluate the performance of Viking's PCM-based thermal energy storage system at Bashas' distribution center in the Phoenix area. The system is expected to significantly reduce energy costs by shifting peak demand to nighttime hours.

A six-year study finds that ARPA-E, the U.S. Energy Department program that supports cutting-edge energy technologies, is meeting the goals of the 2007 law that created it even as the Trump administration seeks to eliminate its funding. The National Academies of Sciences, Engineering and Medicine report concludes that the program is moving in the right direction and does not require major changes to keep bringing new energy technologies to market.

• The co-creator of a camisole that uses phase change material to reduce the discomfort of hot flashes is profiled in ChicagoInno this month. Nancy Munro, who is selling "CoolCami" online, hopes to partner with a women’s undergarment company like Spanx or Soma. CoolCami is made of absorbent bamboo fabric and features a PCM-filled cooling liner.

Peli BioThermal reports that its ProMed thermal transport bags performed well in a five-month trial in the United Kingdom. The Great North Air Ambulance Service used the bags to transport blood plasma to accident scenes.

Ministry of Supply, the Boston startup that integrates phase change material in its high-tech menswear, has added a lightweight polo shirt to its lineup. The machine-washable Apollo 3 Polo sells for $70. 

Axiom Exergy, maker of "refrigeration batteries" designed to reduce energy use in supermarkets, is looking to fill eleven positions, including product engineer, product engineer manager and engineering intern. Candidates for the internship are asked to give a concise response to a "bonus question": "Given the choice between pure water and a NaCl-water solution as the thermal energy storage medium in medium temperature (40°F, 4.4°C) refrigeration applications, what are the pros and cons of each material?"

CIC energiGUNE is looking for a laboratory technician to join the Thermal Energy Storage unit's materials development and characterization group.

• The European Commission, in with collaboration with Skanska, Saint-Gobain, Sustainable Building Alliance and Green Building Councils, has developed an open-source assessment framework for measuring the energy performance of buildings. Level(s) links a building’s environmental impact with resource priorities at the European level. The voluntary tool will be ready for testing this fall.

Va-Q-tec AG has established a Japanese subsidiary in Tokyo. The German company develops, manufactures and sells vacuum insulation panels and phase change materials for use in thermal packaging, air freight containers and other applications. Va-Q-tec Japan GK will focus on providing "small box and container sales and rental solutions" in the Asian market.

• A recent New York Times piece answered the question: "What if you need a battery? A really big one — big enough to run a city?" A 2.35-million-square-foot office tower in New York City is among many buildings around the world equipped with a system that stores energy in the form of ice. The system freezes water overnight to help cool the building during the day, when electricity is typically more expensive.  

Massachusetts has awarded $1.5 million to help fund installation of more than 200 residential thermal energy storage units on Nantucket. Ice Energy, which makes the Ice Bear units, is partnering with Genbright LLC on the project. The goal is to help reduce peak energy demand and demonstrate an alternative to a third undersea transmission line to the island.

SaltX Technology and Aalborg CSP have agreed to work together to develop and commercialize an integrated energy storage solution for concentrated solar power based on EnerStore, SaltX's patented technology for large-scale energy storage. A prototype is scheduled to be built later this year with the aim of securing a commercial pilot plant in 2018.

PCM briefing: Tessol featured in Forbes India; Terrafore Technologies selected for Argonne program

Ben Welter - Monday, June 05, 2017

Thermal Energy Service Solutions, maker of a PCM-based "plug-and-chill" refrigeration system for delivery trucks, is profiled in this month's issue of Forbes India. The system's heat exchanger is designed to keep the refrigerator on the truck within the optimal temperature range for a full day’s operation without drawing power from the engine. The heat exchanger can be fully charged in about six hours at any power outlet.

C-Therm Technologies will be among the exhibitors the Techtextil North America trade show in Chicago June 20-22. The company will demonstrate its non-destructive TCi Property Analyzer, which is designed to characterize the thermal performance (the “warm feel” or “cool touch”) of textiles, fabrics and apparels.

Terrafore Technologies of Minneapolis is one of seven small businesses recently selected to collaborate with researchers at Argonne National Laboratory as part of the Department of Energy's Small Business Vouchers program. Terrafore and Argonne will test the reliability of phase change salt capsules for a compact high-temperature thermal energy storage system for concentrated solar power.

SpecialChem is offering an online course titled "How to Search & Map U.S. Patents for Patentability." The 90-minute course, scheduled for June 28, is designed to for R&D people "looking to avoid patent infringement by enhancing their patent searching and mapping skills." The cost for three attendees on one connection is 300 euros.

Research roundup: Shape-stabilized PCM in epoxy matrix; myristyl alcohol/metal foam for solar thermal storage; more

Ben Welter - Thursday, June 01, 2017

Illustration of shape-stabilized PCM in epoxy matrix

Novel shape stabilized phase change material based on epoxy matrix with ultrahigh cycle life for thermal energy storage [Applied Thermal Engineering]

Thermal and electrical performance of a PV module integrated with double layers of water-saturated MEPCM [Applied Thermal Engineering]

Investigation on thermal and mechanical characteristics of concrete mixed with shape stabilized phase change material for mix design [Construction and Building Materials]

Thermal properties and thermal conductivity enhancement of composite phase change materials using myristyl alcohol/metal foam for solar thermal storage [Solar Energy Materials and Solar Cells]

Experimental and Numerical Study on Energy Performance of Buildings Integrated with Phase Change Materials [Energy Procedia]

Evaluation on Performance of a Phase Change Material Based Cold Storage House [Energy Procedia]

Using Phase Change Materials to Reduce Overheating Issues in UK Residential Buildings [Energy Procedia]

Effect of Supercooling on the Solidification Process of the Phase Change Material [Energy Procedia]

Experimental Investigation of a Spiral Tube Embedded Latent Thermal Energy Storage Tank Using Paraffin as PCM [Energy Procedia]

Investigation of specific heat and latent heat enhancement in hydrate salt based TiO2 nanofluid phase change material [Applied Thermal Engineering]

Modeling and investigation of high temperature phase change materials (PCM) in different storage tank configurations [Journal of Cleaner Production]

Lauric acid/modified sepiolite composite as a form-stable phase change material for thermal energy storage [Applied Clay Science]

Patent application: Hybrid solar reactor and heat storage system

Ben Welter - Wednesday, May 31, 2017

U.S. patent application 20170146262 (applicants University of Colorado, Denver; and Harper International Corp., Buffalo, N.Y.)

"A hybrid solar reactor and a heat storage system are disclosed. The hybrid solar reactor includes one or more heaters and a solar light guide assembly coupled to a shell of the reactor. The solar light guide assembly includes a solar light guide to direct solar energy to, for example, one or more reactor tubes within the shell. ... Further embodiments of the disclosure relate to energy storage systems in which solar energy is used to heat a medium, such as phase change material (e.g., material that changes phase at or about 700° C.). The phase change material can be used to store heat that can be used when, for example, the energy storage system is off sun."

http://www.freepatentsonline.com/20170146262.pdf

Research roundup: Hydrogen-based PCM micro engine; PV module temperature stabilization; more

Ben Welter - Wednesday, May 10, 2017

A new hydrogen-based phase change material open-cycle micro engine [International Journal of Hydrogen Energy]

Photovoltaic module temperature stabilization with the use of phase change materials [Solar Energy]

A review of salt hydrates for seasonal heat storage in domestic applications [Applied Energy]

Shape-stabilized composite phase change materials with high thermal conductivity based on stearic acid and modified expanded vermiculite [Renewable Energy]

Experimental investigation of a latent heat storage for solar cooling applications [Applied Energy]

Novel CFD-based numerical schemes for conduction dominant encapsulated phase change materials (EPCM) with temperature hysteresis for thermal energy storage applications [Energy]

Performance evaluation of a novel solar photovoltaic–thermal collector with dual channel using microencapsulated phase change slurry as cooling fluid [Energy Conversion and Management]

Research roundup: Waste heat extraction; thermal sintering Pickering emulsion-based colloidosomes; more

Ben Welter - Tuesday, April 18, 2017

Micro-encapsulated phase change material (MPCM) slurries: Characterization and building applications [Renewable and Sustainable Energy Reviews]

Coupling waste heat extraction by phase change materials with superheated steam generation in the steel industry [Energy]

Large-scale high-temperature solar energy storage using natural minerals [Solar Energy Materials and Solar Cells]

Hierarchical nano-activated silica nanosheets for thermal energy storage [Solar Energy Materials and Solar Cells]

Microencapsulation through thermal sintering Pickering emulsion-based colloidosomes [Soft Matter]

Preparation of polyurea microcapsules containing phase change materials in a rotating packed bed [RSC Advances]

Dynamic measurement of the thermal conductivity of phase change materials in the liquid phase near the melting point [International Journal of Heat and Mass Transfer]

Investigation of Energy Performance in Conventional and Lightweight Building Components with the use of Phase Change Materials (PCMS): Energy Savings in Summer Season [Procedia Environmental Sciences]

Novel synthesis of cobalt/poly vinyl alcohol/gamma alumina nanocomposite for catalytic application [Applied Physics A]

Research roundup: Solar PCM storage wall system; novel caprylic acid/nonanoic acid mix; double glazing units; more

Ben Welter - Monday, April 17, 2017

Experimental study of a modified solar phase change material storage wall system [Energy]

A novel binary mixture of caprylic acid/nonanoic acid as latent heat storage for air conditioning and cooling [Energy and Buildings]

A General Method for Retrieving Thermal Deformation Properties of Microencapsulated Phase Change Materials or Other Particulate Inclusions in Cementitious Composites [Materials and Design]

Effect of PCM thickness and melting temperature on thermal performance of double glazing units [Journal of Building Engineering]

Research roundup: Cenospheres in concrete; form-stable composites with polyacrylic; rice bran distilled fatty acid; more

Ben Welter - Thursday, April 13, 2017

Numerical studies on thermal and electrical performance of a fully wetted absorber PVT collector with PCM as a storage medium [Renewable Energy]

Integrating phase change materials into concrete through microencapsulation using cenospheres [Cement and Concrete Composites]

Testing and performance analysis of micro encapsulated rice bran distilled fatty acid [International Journal of Computer Aided Engineering and Technology]

Enhanced thermal management with microencapsulated phase change material particles infiltrated in cellular metal foam [Energy]

Thermal performance study of form-stable composite phase change material with polyacrylic [AIP Conference Proceedings]

Design and Preparation of Carbon Based Composite Phase Change Material for Energy Piles [Materials]

Single-walled carbon nanotube for shape stabilization and enhanced phase change heat transfer of polyethylene glycol phase change material [Energy Conversion and Management]

Applications of Nanocomposite-Enhanced Phase-Change Materials for Heat Storage [Materials Science Forum]

Fatty acids and related phase change materials for reliable thermal energy storage at moderate temperatures [Solar Energy Materials and Solar Cells]

A study of a eutectic salt of lithium nitrate and sodium chloride (87–13%) for latent heat storage [Solar Energy Materials and Solar Cells]

Thermal stabilization and permanent deformation resistance of LWA/PCM-modified asphalt road surfaces [Construction and Building Materials]

PCM briefing: Trump budget 'just not correct' on ARPA-E; Croda's Kevin Bozec among panelists at Plant Based Summit

Ben Welter - Thursday, March 30, 2017

Ice Energy and Horizon Solar Power have completed the installation of a solar-plus-ice-battery-storage system at Palm Springs Cultural Center in California’s Coachella Valley. The system, which replaced an aging HVAC system, comprises 73.6 kW of solar panels and five Ice Bear 30s.

• The Trump administration's budget blueprint is "just not correct" about the function of the Advanced Research Projects Agency-Energy, its former director said this week. The blueprint eliminates all ARPA-E funding "because the private sector is better positioned to finance disruptive energy research and development and to commercialize innovative technologies." But agency was created just for stages of research and development that the private sector does not finance, said Ellen Williams, the agency's director from 2014 until January 2017.

Dow Chemical and DuPont won the blessing of the European Union for their $130 billion merger by agreeing to sell substantial assets, including key research and development activities.

• The global PCM market is expected to see a compound annual growth rate of 19.9 percent over the next five years, according to a new market research from Mordor Intelligence, "Global Phase Change Material Market-Segmented by Material Type, Product Type, Application, and Geography-Trends and Forecasts (2017-2022)." 

Kevin Bozec, marketing coordinator at Croda, is among the presenters at the Plant Based Summit in Lille, France, April 25-27. He will discuss Crodatherm phase change materials in a session on new materials. To register for the conference and trade show, visit www.plantbasedsummit.com.

GSA Business offers a closer look at the leadership transition at Alexium International Group Ltd., the company that took its flame-retardant material and PCM-based cooling fabrics to commercial markets in 2016. 

Research roundup: Capsule in shape of red blood cell; helical fin; graphene-enhanced enhanced myo-inositol; more

Ben Welter - Wednesday, March 29, 2017

Thermal performance analysis of a novel PCM capsule in red blood cell shape [Applied Thermal Engineering]

Experimental demonstration, modeling and analysis of a novel latent-heat thermal energy storage unit with a helical fin [International Journal of Heat and Mass Transfer]

Preparation, characterization and thermal properties of fatty acid eutectics/bentonite/expanded graphite composites as novel form–stable thermal energy storage materials [Solar Energy Materials and Solar Cells]

Parametric study and approximation of the exact analytical solution of the Stefan problem in a finite PCM layer in a steady periodic regime [International Communications in Heat and Mass Transfer]

Synthesis, characterization and applications of microencapsulated phase change materials in thermal energy storage [Energy and Buildings]

Graphene nanoplatelets enhanced myo-inositol for solar thermal energy storage [Thermal Science and Engineering Progress]