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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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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]

Maryland legislators approve energy storage tax credit

Ben Welter - Monday, April 17, 2017

By wide margins, Maryland legislators have passed a bill that calls for a 30 percent tax credit for the deployment of energy storage technologies, including thermal storage.

The total funding, capped at $750,000 a year for five years, starting in 2018, is relatively modest. But the credit is apparently the first of its kind in the United States, and it could serve as a model for states interested in boosting the storage market without imposing mandates.

The bill, which passed unanimously in the Senate and by a 90-vote margin in the House, is now in the hands of Republican Gov. Larry Hogan. A veto seems unlikely.

The bill defines "energy storage system" as a system designed "to store electrical energy, or mechanical, chemical, or thermal energy that was once electrical energy, for use as electrical energy at a later date or in a process that offsets electricity use at peak times.” Thus the tax credit would apply to a variety of storage technologies, including batteries, flywheels and compressed air, as well as systems based on ice and other phase change materials.

The Maryland Energy Administration will oversee the program and determine eligibility specifics. Funding is capped at $5,000 for residential and $75,000 for commercial projects and will be awarded on a first-come, first-served basis.

“This is a way to create an economic signal for using storage to provide grid reliability and resiliency, reduce peak capacity needs, and help integrate more renewable resources,” Jason Burwen, policy and advocacy director at the Energy Storage Association, told Greentech Media. “It is also a more conservative approach, executing this policy through the tax code with cost caps. That's an approach that got bipartisan agreement in Maryland."

"By enacting the energy storage tax credit, Maryland is showing real leadership in moving from fossil fuels to renewables," Ice Energy CEO Mike Hopkins said in an email sent to Phase Change Matters. "The success of renewables depends on cost-effective and reliable energy storage being adopted as a meaningful part of the electricity grid."

Ice Energy makes ice-based thermal storage systems that store cooling energy by freezing water in an insulated tank. During peak hours, the company says, the stored ice delivers up to four hours of cooling, reducing the typical peak load by 95 percent.

Hopkins continued:

"Storage obviously mitigates the intermittency of solar and wind. As we are seeing in places like Hawaii and California, a duck curve is replacing the traditional middle of the day peak. While the later in the day peak is a problem, as it is steeper than the traditional middle of the day peak, the over-generation in the middle of the day is the bigger problem that threatens grid stability. Energy storage flattens the duck curve, provided of course you are using the appropriate storage technologies.

"California was a leader in seeing the criticality of energy storage to the continued success of renewables and driving its adoption just like they did renewables, by a mandate through the Energy Storage Act in 2013. It had the same logic as the RPS and I would say drove the same results – increased competition and investment resulting in innovation and lower cost than anyone forecast.

"Maryland’s approach is another bold move to drive the adoption of energy storage.

"Playing off the federal tax credit, which has been of very limited value to storage given the need to be so tightly tied to renewables, the Maryland tax credit should be a powerful driver for energy storage in Maryland. It is also noteworthy that Maryland has explicitly recognized all forms of energy storage as qualifying, something that some others have failed to do by falling into the trap of equating storage with chemical batteries, especially lithium-ion. 

"Chemical batteries have had an outsized share of the PR and the market to date, but as the market is quickly developing, cost is becoming more and more important and that’s where policy makers need to be smart like Maryland and make sure they get the best value for their storage dollar, which means a portfolio of different technologies optimized to most cost effectively solve the various grid problems storage can solve."

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]

Ice Energy to deploy up to 1,800 commercial-scale ice batteries in Orange County

Ben Welter - Wednesday, April 12, 2017

Ice Energy has partnered with NRG Energy to install up to 1,800 behind-the-meter ice batteries – the world's largest such deployment – in qualifying commercial and industrial buildings in Orange County, Calif.

Ice Bear 30The Ice Bear 30s will provide a total of up to 25.6 MW of peak storage capacity to Southern California Edison under 20-year power purchase agreements.

"Our distributed ice batteries will solve local grid issues in Orange County while reducing CO2 emissions by up to 200,000 tons over the life of the project," said Mike Hopkins, CEO of Ice Energy. "Orange County commercial and industrial customers that qualify for the program will get free use of Ice Bears, lowering electric bills and further extending the life of their HVAC systems."

The first dozen or so Ice Bears will be installed at commercial and industrial sites in Tustin, with completion expected in June.

During off-peak hours, the Ice Bear stores cooling energy by freezing water in an insulated tank. During peak hours, the company says, the stored ice delivers up to four hours of cooling, reducing the typical peak load by 95 percent.

More information on the Ice Bear and how to order through NRG Energy is available at nrg.com/icebear or by calling 1-844-235-3182.

http://www.marketwired.com/press-release/ice-energy-nrg-energy-announce-start-worlds-largest-ice-bear-energy-storage-2209311.htm

PCM briefing: A call for presentations on renewable heating and cooling; EnergyNest, Tata team up on demo project

Ben Welter - Friday, April 07, 2017

Frank Bruno, leader of the Thermal Energy Storage Group at the University of South Australia, talks about the advantages of thermal storage in an interview with the Guardian newspaper.

Robert Riebolge, chief network analyst of the Adelaide-based energy storage company 1414 Degrees, tells Ecogeneration magazine that storage is “quite clearly” the solution to the intermittency problem of wind and solar. But, he says, the way in which the Australian market is constructed and the regulatory system is set up doesn’t allow for its easy introduction.

• The Institute for Advanced Architecture of Catalonia has teamed with Basque technology company Tecnalia to develop On Site Robotics, a 3D printing construction project in which sustainable, low-cost buildings can be built on-site with a special clay-based material made of natural, biodegradable, recyclable and locally sourced materials.

• Get the latest information on the Toxic Substances Control Act in a free webinar April 19. The presentation by Mark N. Duvall of the environmental law firm Beveridge & Diamond will identify the principal amendments, discuss the impact on manufacturers and compare the amended TSCA to the European Union's REACH regulation.

• In a video posted on YouTube, Adam Tetz of Pelican BioThermal and other industry experts discuss the future of temperature controlled logistics at last month's Temperature Controlled Logistics Europe 2017.

• The Eu­ro­pean Tech­nol­ogy and In­no­va­tion Plat­form on Re­new­able Heat­ing & Cool­ing has issued a call for presentations to be made at the group's an­nual event in Brus­sels June 20. Topics include biomass; district heating and cooling; solar thermal heating and cooling; hybrid systems; and thermal energy storage. Applications are due by May 22. 

Tata Steel and EnergyNest have begun work on a thermal energy storage demo project at Tata's plant in IJmuiden, Netherland. EnergyNest's concrete-based TES system will store exhaust heat from steel production to cover some of the plant's energy demands. EnergyNest, meanwhile, won the top prize in the 2017 Nordic Cleantech Open last week. The contest, organized by Cleantech Scandinavia, consisted of several competitive rounds in which hundreds of companies applied.

Chris Pais has joined Axiom Exergy as director of field operations. Pais was previously director of system architecture at LightSail Energy. Axiom's "refrigeration battery" system, aimed at supermarkets and cold storage warehouses, stores water chilled at night, when electricity is cheapest, to take the load off condensers and compressors during the day.

Vaibhav Bahadur, assistant professor of mechanical engineering at the University of Texas at Austin, was one of eight faculty members at the university to receive National Science Foundation early career development awards totaling more than $2 million. Bahadur received funding for his project “Influence of electric fields on liquid-to-solid phase change associated with clathrate hydrate formation.”

• In a piece posted on LinkedIn, Liam Holmes, Europe and Asia engineering team lead at Sonoco ThermoSafe, writes about the role of industrial design in the temperature-assurance packaging industry's shift from single-use products to modular reusable green systems.

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: Fast charging with expanded graphite; rebar corrosion in PCM-enhanced concrete; hybrid cooling vest; more

Ben Welter - Tuesday, March 28, 2017

Fast charging of thermal energy storage systems enabled by phase change materials mixed with expanded graphite [International Journal of Heat and Mass Transfer]

Synthesis and characterization of a narrow size distribution nano phase change material emulsion for thermal energy storage [Solar Energy]

Analysis of the effects of use of thermal energy storage device (TESD) in solar air heater [Alexandria Engineering Journal]

Experiment and simulation of thermal management for a tube-shell Li-ion battery pack with composite phase change material [Applied Thermal Engineering]

Novel model for the prediction of SSLE temperatures and crystallization paths of any mixture containing palmitic, stearic, oleic, linoleic and linolenic acid [Thermochimica Acta]

A review on recent advancements in photovoltaic thermal techniques [Renewable and Sustainable Energy Reviews]

A comparative study on corrosion behavior of rebar in concrete with fatty acid additive as phase change material [Construction and Building Materials]

Novel phase change materials based on fatty acid eutectics and triallyl isocyanurate composites for thermal energy storage [Journal of Applied Polymer Science]

Optimal cooling intervention for construction workers in a hot and humid environment [Building and Environment]

Research roundup: PCM compatibility with metals, plastic; desiccant packet for cooling vest; paraffin viscosity; more

Ben Welter - Thursday, March 23, 2017

Investigation of the corrosive properties of phase change materials in contact with metals and plastic [Renewable Energy]

Preparation and thermal properties of SAT-CMC-DSP/EG composite as phase change material [Applied Thermal Engineering]

A numerical study on the usage of phase change material (PCM) to prolong compressor off period in a beverage cooler [Energy Conversion and Management]

Abilities and limitations of thermal mass activation for thermal comfort, peak shifting and shaving: A review [Building and Environment]

Corrosion effect of phase change materials in solar thermal energy storage application [Renewable and Sustainable Energy Reviews]

A review for phase change materials (PCMs) in solar absorption refrigeration systems [Renewable and Sustainable Energy Reviews]

Sodium nitrate – Diatomite composite materials for thermal energy storage [Solar Energy]

Innovative PCM-desiccant packet to provide dry microclimate and improve performance of cooling vest in hot environment [Energy Conversion and Management]

Heat transfer study of phase change materials with graphene nano particle for thermal energy storage [Solar Energy]

Energy performance evaluation of heat-storage gypsum board with hybrid SSPCM composite [Journal of Industrial and Engineering Chemistry]

Empirical equation to estimate viscosity of paraffin [Journal of Energy Storage]

Yearly energy performance of a photovoltaic-phase change material (PV-PCM) system in hot climate [Solar Energy]

PCM briefing: Pluss VP honored as 'Innovator under 35'; BASF partners with Hewlett Packard Enterprise on new supercomputer

Ben Welter - Tuesday, March 21, 2017

Ankit Jhanwar, VP for corporate planning and strategy at Pluss Advanced Technologies, was honored as one of 10 "Innovators under 35" at EmTech India 2017.

Sunamp Ltd., maker of PCM-based heat batteries, is one of eight finalists for an Ashden UK Award. Winners will be announced at a ceremony in London on June 15. The competition recognizes excellence in the field of green energy.

Hewlett Packard Enterprise will work with BASF to develop a supercomputer that will sharply reduce the time it takes to run simulations and modeling in chemical research. "The new supercomputer will promote the application and development of complex modeling and simulation approaches, opening up completely new avenues for our research at BASF,” said Dr. Martin Brudermueller, chief technology officer at BASF.

McKinsey & Co. analysts say a slowdown in the chemical industry's financial performance over the past five years reflects important changes in the industry’s fundamentals. One of their recommendations: "Incumbent specialty-chemical players must prepare for further encroachment of commoditization and erosion of their historical advantages when attackers from developing markets gain more experience and become increasingly technologically savvy."

California lawmakers have introduced legislation to encourage more clean energy resources to address peak load. The bills would require utilities to deploy clean energy during peak demand in order to meet the state's aggressive greenhouse gas and renewable energy goals. 

PCM briefing: BASF expands R&D presence in South Asia; Viessmann, Aldi Nord team up on ice-based TES system

Ben Welter - Friday, March 10, 2017

BASF Group opened its Innovation Campus Asia Pacific in Mumbai this week, dramatically expanding its research and development presence in India. BASF expects to invest 50 million euros in the campus, making it the company's largest R&D investment in South Asia. BASF Venture Capital, meanwhile, is investing in the U.S. renewable chemistry firm P2 Science

• The heating and cooling technology company Viessmann and the food retailer Aldi Nord have developed a new cooling and heating system that employs propane heat pumps, photovoltaics and ice storage. The ESyCool system, designed to reduce energy costs by 15 percent and reduce life-cycle costs, will be installed in 10 Aldi Nord stores in Germany. 

• Registration is open for the 2017 New Product Development and Innovation in the Chemical Industry summit, to be held April 26-27 in Berlin. Speakers include Stephan Altmann, head of innovation excellence at BASF, and Olivier Magnin, technology director for Europe, the Middle East and Africa at DuPont Performance Materials.