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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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PCM briefing: Axiom lowers energy costs at Whole Foods store; EnergyNest has opening for senior engineer

Ben Welter - Monday, February 19, 2018

• Nearly a year ago, a Whole Foods in Los Altos, Calif., connected a thermal battery system made by Axiom Exergy to the store's refrigeration system. Whole Foods pays Axiom a monthly fee for the saltwater-based technology. Axiom says that payment, coupled with a lower monthly power bill, amounts to less than what the grocer was paying its utility before the batteries were installed. 

• Thermal battery maker EnergyNest AS of Norway is looking to hire a senior engineer to work in its main office outside Oslo.  

• The schedule has been posted for the 2018 GlobalChem Conference & Exhibition in Washington, D.C., Feb. 28-March 2. Most of the sessions focus on the Toxic Substances Control Act, the Global Harmonized System of Classification and other regulatory topics. 

Applications are being accepted for the Women and Minorities in Science, Technology, Engineering and Mathematics Fields Grant Program (WAMS). The program supports research and extension projects that will increase participation by rural women and underrepresented minorities from rural areas in science, technology, engineering and mathematics.

• CONTISOL, a solar reactor that can run day or night, is being tested by researchers in Germany. The reactor uses concentrated solar power and thermal energy storage.

Registration is still open for the second annual European Chemistry Partnering event, to be held Feb. 23 in Frankfurt, Germany. It's a chance to pitch innovations and connect with investors and decision-makers in the chemical industry.

• U.K.-based Sure Chill Co., whose water-based refrigeration technology is used to keep vaccines cool without the need for grid-based electricity, has been shortlisted for a 2018 St. David Award in Innovation, Science and Technology. 

• The U.S. Federal Energy Regulatory Commission has voted to clear a path for energy storage projects in the capacity, energy and ancillary services markets. Commissioner Cheryl LaFleur noted that newer technologies “like some of the batteries, flywheels, compressed air, new forms of thermal storage, are rapidly gaining commercial viability and scale.”

PCM briefing: Croda merger talks reported; RAL PCM members to meet March 1

Ben Welter - Monday, February 12, 2018

• British specialty chemicals maker Croda International Plc has held unsuccessful talks with Ashland Global Holdings Inc. about a possible merger, a source familiar with the matter told Reuters last week.

Croda recently redesigned the CrodaTherm website, www.crodatherm.com. The new site offers improved navigation and searchability, a wider range of potential PCM applications and profiles of the CrodaTherm technical team. Visitors can register to log in and download datasheets and order samples. "We are excited to launch this new website, making it even easier for our customers to find us and the products they need," said Graeme Tweddle, global managing director for energy technologies at Croda.

• Members of the RAL Quality Association PCM, a European-based organization established in 2004 to develop standards for the phase change material industry, will meet in Düsseldorf, Germany, on March 1. On the agenda: Quality and testing specifications; improvements to the association's website; member content on the BUILD UP Web portal; promotion of PCMs in the European Union, Germany, Netherlands and the United States; and registration of RAL quality marks.   

Sonoco ThermoSafe is accepting registrations for the company's first Leading Minds Seminar, to be held June 6-7 in Philadelphia. Co-hosted by ELPRO, the seminar is a chance for pharmaceutical manufacturers, supply chain partners and government representatives to discuss temperature-assurance packaging and data monitoring in a collaborative environment. Day two includes a visit to ThermoSafe's design and testing lab in Montgomeryville, Penn.

Sonoco is No. 90 on Barron's inaugural list of "The 100 Most Sustainable Companies." 

• A "measurement and verification study" of a Viking Cold Solutions TES system installed in a 320-square-foot walk-in freezer at a supermarket in Fremont, Calif., showed an 18 percent net reduction in energy consumption.   

• The deadline is Monday, Feb. 12, to submit a concept paper for ARPA-E's OPEN 2018 competition. Up to $100 million is available for new projects that "transform the way we generate, store and use energy."

DLR Group, which part of a public-private collaboration working to develop PCM-based cooling and heating methods for Agua Fria Canyon View High School, has been named one of Arizona's "40 Companies to Watch" in 2018 by AZRE magazine. 

• Entries are being accepted for Bio-Based World News' 2018 Innovation Awards. The four categories are product of the year, chemical innovation of the year, best use of alternative feedstocks and industry story of the year. The entry deadline is Feb. 23. Winners will be honored March 20 at the World Bio Markets conference in Amsterdam. 

• Nantucket, Mass., has approved the installation of an Ice Bear thermal storage and air-conditioning unit in a building owned by the town. Last summer, Genbright won a $1.5 million grant from the state to install the units in more than 200 Nantucket homes, with the goal of reducing peak energy demand and staving off the need for a third undersea power cable for the island. But some residents voiced skepticism about the technology, prompting the town board to approve the test installation.

• Shippers have found that cocoa butter can be hard to contain on long ocean voyages. There have been reports of the material leaking out of containers as it changes phase, clogging bilges and generally making a mess. The Cargo Incident Notification System, established in 2011 to share information on all cargo-related incidents, has issued guidelines that recommend the material be shipped in refrigerated containers, particularly when passing through hot climate zones. 

Research roundup: Eutectic organic PCMs; diatomite/CNTs/PEG composites; cellulose insulation; more

Ben Welter - Tuesday, February 06, 2018

From Data in Brief:

Prediction of the Properties of Eutectic Organic Phase Change Materials

From Energy and Buildings:

Diatomite/CNTs/PEG composite PCMs with shape-stabilized and improved thermal conductivity: Preparation and thermal energy storage properties

From Solar Energy:

Thermal performance of phase change materials (PCM)-enhanced cellulose insulation in passive solar residential building walls

From Energy Procedia:

A Parametric Study about the Potential to Integrate Phase Change Material into Photovoltaic Panel
Investigations on thermal environment in residential buildings with PCM embedded in external wall
Passive Cooling Using Phase Change Material and Insulation for High-rise Office Building in Tropical Climate
A Study on Latent Heat Energy Storage Performance of Tetradecane
Erythritol-Vermiculite form-stable phase change materials for thermal energy storage

From Applied Thermal Engineering:

Modification of expanded graphite and its adsorption for hydrated salt to prepare composite PCMs

From Renewable Energy:

Experimental Investigation of Solar Chimney with Phase Change Material (PCM)
Effect of retrofitting a silver/water nanofluid-based photovoltaic/thermal (PV/T) system with a PCM-thermal battery for residential applications

From International Journal of Thermal Sciences:

Thermal charging performance of enhanced phase change material composites for thermal battery design

From Colloids and Surfaces A: Physicochemical and Engineering Aspects:

Preparation and characterization of high-temperature non-flowing SiO2/EG/paraffin composites by high-temperature refining

From Materials Today: Proceedings:

Experimental analysis of thermal energy storage by phase change material system for cooling and heating applications

From Materials & Design:

Thermal conductivity enhancement of phase change materials with form-stable carbon bonded carbon fiber network

From Sustainable Cities and Society:

Experimental study on thermal performance improvement of building envelopes by integrating with phase change material in an intermittently heated room

From International Journal of Refrigeration:

Phase-change thermal energy storage using spherical capsules: performance of a test plant

Research roundup: Dynamic shading systems with PCM; mesoporous N-doped carbons; beeswax and photovoltaics; more

Ben Welter - Wednesday, December 20, 2017

Performance of a coupled transpired solar collector—phase change material-based thermal energy storage system [Energy and Buildings]

Thermal and optical characterisation of dynamic shading systems with PCMs through laboratory experimental measurements [Energy and Buildings]

Thermo-mechanical analysis of microcapsules containing phase change materials for cold storage [Applied Energy]

Introduction of organic-organic eutectic PCM in mesoporous N-doped carbons for enhanced thermal conductivity and energy storage capacity [Applied Energy]

Heat storage performance analysis and parameter design for encapsulated phase change materials [Energy Conversion and Management]

Thermal performance of copper foam/paraffin composite phase change material [Energy Conversion and Management]

Numerical study of PCM integration impact on overall performances of a highly building-integrated solar collector [Renewable Energy]

Nanoparticles Enhanced Phase Change Material (NPCM) as Heat Storage in Solar Still Application for Productivity Enhancement [Energy Procedia]

Performance enhancement of the concentrated photovoltaic using different phase change material configurations [Energy Procedia]

Experimental Analysis of Using Beeswax as Phase Change Materials for Limiting Temperature Rise in Building Integrated Photovoltaics [Case Studies in Thermal Engineering]

Research roundup: Cascaded cold storage unit with multiple PCMs; evolution of global heat transfer coefficient; more

Ben Welter - Tuesday, November 07, 2017

Evolution of global heat transfer coefficient on PCM energy storage cycles [Energy Procedia]

Thermal performance analysis of a cascaded cold storage unit using multiple PCMs [Energy]

An experimental investigation of discharge/solidification cycle of paraffin in novel shell and tube with longitudinal fins based latent heat storage system [Energy Conversion and Management]

An alternative approach for assessing the benefit of phase change materials in solar domestic hot water systems [Solar Energy]

Organic-inorganic hybrid shell microencapsulated phase change materials prepared from SiO2/TiC-stabilized pickering emulsion polymerization [Solar Energy Materials and Solar Cells]

Preparation of phase change material emulsions with good stability and little supercooling by using a mixed polymeric emulsifier for thermal energy storage [Solar Energy Materials and Solar Cells]

Optimal design of PCM thermal storage tank and its application for winter available open-air swimming pool [Applied Energy]

Research roundup: Biocatalysts combined to make new PCMs; tankless solar heating system; dual PCM gypsum board; more

Ben Welter - Thursday, November 02, 2017

Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat [Molecular Catalysis]

Performance evaluation of dual phase change material gypsum board for the reduction of temperature swings in a building prototype in composite climate [Energy and Buildings]

Study on a tankless solar heating system using phase-change material plaster [Building and Environment]

Performance Enhancement of a Building-Integrated Photovoltaic Module Using Phase Change Material [Energy]

Low cracking ratio of paraffin microcapsules shelled by hydroxyl terminated polydimethylsiloxane modified melamine-formaldehyde resin [Colloids and Surfaces A: Physicochemical and Engineering Aspects]

Numerical and experimental research of cold storage for a novel expanded perlite-based shape-stabilized phase change material wallboard used in building [Energy Conversion and Management]

Comparative study in the identification of liquid to solid transition phase with DSC, Raman spectra analysis and chemiometrics methods applied to phase change materials used for icing-delay in civil engineering infrastructures [Applied Thermal Engineering]

Thickness Determination of a Three-layer Wall with Phase Change Materials in a Chinese Solar Greenhouse [Procedia Engineering]

Experimental Study on Thermal Performance Improvement of Building Envelopes Integrated with Phase Change Materials in an Air-conditioned Room [Procedia Engineering]

Phase Change Humidity Control Material and its Application in Buildings [Procedia Engineering]

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: Outlast introduces Xelerate fabric; Warmilu signs 2 distributors

Ben Welter - Friday, May 19, 2017

Drawing of Outlast Xelerate

Outlast Europe's Martin Bentz spoke with T.EVO magazine this month about the company's new Xelerate fabric. The fabric, introduced at a German trade fair earlier this year, incorporates "heat spreader" technology, a process traditionally known for cooling electronic devices. Xelerate fabric features improved thermal conductivity, Bentz said, and is suitable for home textiles, sportswear and protective gear. In an email exchange with Phase Change Matters, Bentz declined to discuss specific partners or customers.

Warmilu, maker of the IncuBlanket infant warmer, reports that is on track for $300,000 in total 2017 sales after signing two distributors for Latin America, Africa and Southeast Asia: Relief for Africa Foundation and Maternova. The IncuBlanket, which has been successfully tested in clinical trials in India, uses packs filled with sodium acetate trihydrate to keep infants warm for up to five hours. CEO Grace Hsia says the device recently cleared its first regulatory filing with Kenya's Pharmacy and Poisons Board.

Axiom Exergy has won a Gold Stevie for Energy Innovation in the 15th annual American Business Awards. Axiom's "refrigeration battery" enables supermarkets and food warehouses to store thermal energy at night when power is cheaper. The system, which uses salt-based phase change material, reduces peak power usage by up to 40 percent.

• Registration is open for IFAI's Expo 2017, set for Sept. 27-29 in New Orleans. The Industrial Fabrics Association International show will feature sessions on smart fabrics, military procurement, biomimesis and green certification.   

Pelican BioThermal has introduced a new Series 22 Universal system for its Credo brand of shippers. The system uses a dual PCM coolant system designed to be operational throughout the year.

National Law Review offers a fresh overview of green chemistry laws across the United States. "State chemical control regimes," the authors conclude, "are likely to increase cost and foster confusion about chemical safety, which is one reason that Congress agreed to modernize TSCA by adopting LCSA."

Monodraught's Cool-phase ventilation and cooling system was among the finalists honored at the National CSR Awards in London this week. The hybrid system, which won a "One to Watch" award, uses PCMs to store and release thermal energy, providing a free cooling load and reducing energy and maintenance costs.

• The agenda has been released for the 15th Cold Chain Global Forum to be held Sept. 25-29 in Chicago. Frank Butch, director of engineering at Sonoco ThermoSafe, will lead a master class on temperature assurance packaging certification.

Bloomberg BNA is offering a free webinar June 12: "Reviewing New Chemicals under Amended TSCA: Impact on Innovation." 

Outlast Europe's Martin Bentz spoke with T.EVO magazine this month about the company's new Xelerate fabric (shown below). The fabric, introduced at a German trade fair earlier this year, incorporates "heat spreader" technology, a process traditionally known for cooling electronic devices. Xelerate fabric features improved thermal conductivity, Bentz said, and is suitable for home textiles, sportswear and protective gear. In an email exchange with Phase Change Matters, Bentz declined to discuss specific partners or customers.

PCM-based system cuts energy use by 27% in frozen-foods warehouse

Ben Welter - Monday, April 24, 2017

Viking Cold Solutions systemFrozen Gourmet Inc., a wholesale distributor of premium ice cream and other frozen foods, says a PCM-based thermal battery system has cut energy consumption by more than 27 percent in the company’s freezer warehouse in Redding, Calif.

The Viking Cold Solutions system, installed at the end of 2016, features hundreds of plastic bottles filled with a salt hydrate solution. The bottles are suspended from the ceiling of the 7,900-square-foot warehouse. The phase change material solidifies when the warehouse chillers are running. The PCM absorbs heat as it melts, allowing the chillers to run less frequently and still keep the warehouse within a few degrees of the target temperature, 14.8º Celsius. 

Shifting demand to off-peak hours can result in significant savings on electricity in California, where daytime demand charges are common. The Viking system also includes intelligent controls and sensors to optimize energy use and alert managers to temperature abnormalities, equipment failure and power outages.

"We searched for a year to find the right technology to reduce our energy costs and decided to purchase the Viking Cold TES system after seeing the capability and flexibility the system provides," said Bill Kohn, CEO of Frozen Gourmet. "The reduction in energy consumption has improved our bottom line and the real-time monitoring has been invaluable in helping us recognize and address equipment issues before expensive problems arise."

http://finance.yahoo.com/news/frozen-gourmet-installs-viking-cold-130000052.html

Patent application: Multizone recreational cooler with phase change material

Ben Welter - Thursday, April 20, 2017

Viking Cold Solutions patent drawingU.S. patent application 20170108260 (applicant Viking Cold Solutions, Houston, Texas):

"A cooler includes a body. The cooler also includes a divider that divides an interior of the body into a first zone and a second zone. A first phase change material module is disposed in the first zone of the interior of the body and a second phase change material module is disposed in the second zone of the interior of the body."

http://www.freepatentsonline.com/20170108260.pdf