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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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Ice Cub is now available to California homeowners, builders

Ben Welter - Friday, October 12, 2018

The Ice Cub, Ice Energy's hybrid air-conditioning and thermal energy storage system, is now available for purchase by California homeowners and homebuilders.

The solar PV-compatible unit replaces a conventional 5-ton outdoor condensing unit and is designed to work seamlessly with home HVAC systems. The Ice Cub functions like a typical condensing unit, but it also makes ice to store up to four hours' worth of cooling.

"For homes with solar PV," Ice Energy says, "a full tank of ice can be made and stored during the day, using what would otherwise be surplus solar generation."

The Ice Cub retails for $15,000. But Ice Energy says two government incentives potentially reduce the cost of purchase and installation to below that of a conventional air conditioning system. The Ice Cub qualifies for California’s Self-Generation Incentive Program rebate and, for homes with solar PV, the federal Solar Investment Tax Credit. Ice Energy says the payback period for an Ice Cub installed in a California home with solar PV is less than one year.

The company, based in Southern California, says it is in the early stages of recruiting regional project partners such as homebuilders and HVAC installers.

“Conventional AC units in California have become increasingly expensive to operate as the state’s new time-of-use rates take effect,” said Joseph Draper, executive chairman of Ice Energy. “The Ice Cub, by contrast, reduces consumption of expensive electricity and can save homeowners as much as $1,500 a year on their utility bill. The smart, energy-efficient Ice Cub is a true consumer product with real potential to render conventional home AC units obsolete. We are very excited to make it available for immediate delivery to homeowners and builders here in California.”

https://www.solarpowerworldonline.com/2018/10/ice-energys-hybrid-air-conditioning-and-energy-storage-system-qualifies-for-itc-with-solar/

PCM briefing: Viking Cold Solutions to install system in Mexico; Pluss reaches distribution deal with Ferro-Plast of Italy

Ben Welter - Friday, October 12, 2018

Viking Cold Solutions of Houston, Texas, has reached a deal to install its PCM-based thermal energy storage system in one of Red de Frios' frozen food warehouses in Monterrey, Mexico. Viking systems are designed to reduce energy costs by shifting peak demand to nighttime hours.

• The German Aerospace Center, the Karlsruhe Institute of Technology and the University of Stuttgart have signed an agreement to build a research facility in Germany to develop an efficient, cost-effective and "virtually loss-less" heat-based electrical storage technology. At this week's signing ceremony in Stuttgart, Stanford University Professor Robert B. Laughlin, right, 1998 Nobel Laureate in Physics, explained why he thinks heat storage will play a key role in the energy landscape of the future.

• The Conductive Plastics conference in Vienna Nov. 6-7 will include sessions on "Challenging the boundaries in thermally conductive and electrically conductive polyamides," "Boron nitride filler materials for high-performance thermal management applications," "Mineral flame retardants and metal oxides as thermally conductive fillers," "Investigating the effect of material molecular orientation on thermal conductivity of polymeric products" and "Thermally conductive materials based on synthetic rubber."

• In a LinkedIn post, Pluss Advanced Technologies of India announced it has reached a deal with Ferro-Plast Srl of Italy to distribute Pluss products in Europe.

• New from MarketResearch.biz: "Global Advanced Phase Change Material (PCM) Market Trends, Applications, Analysis, Growth, And Forecast: 2018 To 2027"

• New from Invant Research: "Global Advanced Phase Change Material (PCM) Market Study 2015-2025"

• New from Future Market Insights: "Salt Hydrate Market: Global Industry Analysis 2012 - 2016 and Opportunity Assessment; 2017 - 2027"

• New from Polaris Market Research: "Fatty Acid Esters Market, [By Product Type (Glycerol Monostearate, Medium Chain Trigylcerides, Isopropyl Esters (Myrsitate & Palmitate) and Others); By Application (Lubricants, Pharmaceuticals, Personal care & Cosmetics, Surfactants and Others); By Regions]: Market size & Forecast, 2018 – 2026"

Peli BioThermal has opened service centers in Basel and Berlin to support the company's line of Credo reusable temperature-control shippers.

• Nominations are being accepted for Metrohm USA's Young Chemist Award 2019. Entrants submit an abstract of their research for a chance to win a $10,000 cash prize and an all-expenses-paid trip to PITTCON 2019. The contest is limited to undergrad, grad, post-grad and doctoral students in the United States and Canada. Entrants must demonstrate novel research or a novel methodology using titration, ion chromatography, electrochemistry and/or spectroscopy. Applications are due by Dec. 31, 2018.

Sonoco ThermoSafe, a global provider of temperature assurance packaging in the life sciences sector, has an opening for a sales director, responsible for sales growth in North America.

• Sonoco ThermoSafe has posted the agenda for the next Leading Minds Seminar, to be held Nov. 6-7 in London. 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.

ASHRAE Learning Institute will offer 20 courses during the 2019 ASHRAE Winter Conference and AHR Expo. The conference will be held in Atlanta Jan. 12-16. Courses include "Advanced Designs for Net Zero Buildings," "Thermal Energy Storage Systems for Air Conditioning" and "Solar PV and Thermal System Analysis and Design."

Research roundup: Ternary hydrated salt mixture; earth-air heat exchanger; shape-stabilized fly ash composite PCM; more

Ben Welter - Monday, October 01, 2018

From Energy Conversion and Management:

Two types of composite phase change panels containing a ternary hydrated salt mixture for use in building envelope and ventilation system
Research on cooling performance of phase change material-filled earth-air heat exchanger
An experimental investigation of the phase change process effects on the system performance for the evacuated tube solar collectors integrated with PCMs

From Solar Energy:

Carbon based material included-shaped stabilized phase change materials for sunlight-driven energy conversion and storage: An extensive review

From Applied Thermal Engineering:

Experimental Study of Water Solidification Phenomenon for Ice-on-Coil Thermal Energy Storage Application Utilizing Falling Film

From Powder Technology:

Preparation and thermal properties of stearic acid-benzamide eutectic mixture/expanded graphite composites as phase change materials for thermal energy storage

From International Communications in Heat and Mass Transfer:

Experimental and numerical study of melting of the phase change material tetracosane

From Particuology:

Effect of particle size on the thermal performance of NaNO3/SiO2/C composite phase-change materials

From Materials Chemistry and Physics:

Low-cost, shape-stabilized fly ash composite phase change material synthesized by using a facile process for building energy efficiency

From Construction and Building Materials:

Preparation and thermal properties of encapsulated ceramsite-supported phase change materials used in asphalt pavements

From Applied Energy:

PCM briefing: Online master's degree in thermal energy storage; Alexium appoints new CFO

Ben Welter - Thursday, September 27, 2018

Dr. Luisa F. Cabeza• The enrollment period is open for an online master's degree program on thermal energy storage. The program, offered by the University of Lleida and the University of Barcelona, includes "training in technical aspects of TES and the energy system, but it also includes soft skills in patenting and entrepreneurship." The program is directed by Dr. Luisa F. Cabeza of the University of Lleida. 

Siemens Gamesa held a topping-out ceremony this week for its 30MWh electric thermal energy storage facility in Hamburg-Altenwerder, Germany. The pilot facility, which stores energy in 1,000 tons of rock fill at temperatures of 600º C, is in its final phase of construction and due to be fully commissioned in 2019.

• Lauren Boteler, a thermal/packaging engineer for the U.S. Army Research Laboratory's Sensors and Electron Devices Directorate, has been named Woman Engineer of the Year by the American Society of Mechanical Engineers' Electronics Packaging and Photonics Division.

Indonesia has imposed a three-year moratorium on new palm oil plantations and ordered a review of existing ones in an effort to address sustainability and environmental concerns.  

• The U.S. patent system, the first in the world to incentivize large numbers of ordinary citizens to innovate, has long been ranked No. 1 in the world. But over the past few years the system has fallen to 12th. Forbes reports that Andrei Iancu, the new director of the U.S. Patent and Trademark Office, is working to turn that around and "bring about a much-needed revitalization of the American patent system."

Alexium International has appointed Jason Lewis as chief financial officer, succeeding Aaron Krech, who resigned effective Sept. 30. Lewis has over 20 years of experience in financial roles in the specialty chemicals industry. Alexium also announced the appointment of Allen Reihman as chief commercial officer. He will lead the company’s sales, marketing and technology commercialization efforts. Alexium, based in Greer, S.C., and Perth, Australia, makes flame-retardant and PCM-enhanced fabric treatments.

Research roundup: Myristic acid with ethyl cellulose shell; phase-change acoustic heat engine; hybrid personal cooling system; more

Ben Welter - Tuesday, September 25, 2018

From Applied Energy:

Microencapsulation and thermal properties of myristic acid with ethyl cellulose shell for thermal energy storage
Fast and experimentally validated model of a latent thermal energy storage device for system level simulations
Numerical simulation and experimental validation of the solar photovoltaic/thermal system with phase change material
Low-temperature energy conversion using a phase-change acoustic heat engine

From Journal of Energy Storage:

Exploring additives for improving the reliability of zinc nitrate hexahydrate as a phase change material (PCM)

From Energy:

Laboratory assessment of residential building walls containing pipe-encapsulated phase change materials for thermal management
Review on thermal performances and applications of thermal energy storage systems with inorganic phase change materials

From Nano Energy:

Nanoconfinement effects on thermal properties of nanoporous shape-stabilized composite PCMs: A review

From International Journal of Thermal Sciences:

Study of heat and fluid flow during melting of PCM inside vertical cylindrical tube

From Building and Environment:

A new hybrid personal cooling system (HPCS) incorporating insulation pads for thermal comfort management: Experimental validation and parametric study

From International Journal of Heat and Mass Transfer:

An analytical technique for the optimal designs of tube-in-tank thermal energy storage systems using PCM

From 2nd International conference on Advances in Mechanical Engineering:

Study of freezing characteristics of water based grapheme Nano-fluid PCM in a spherical capsule [pdf]
Enhancement of thermal conductivity of PCM using filler graphite powder materials [pdf]

From 10th International Conference on Applied Energy:

A Numerical Investigation into the Heat Transfer and Melting Process of Lauric Acid in a Rectangular Enclosure with Three Values of Wall Heat Flux

PCM briefing: Energy storage projects get share of $28 million in ARPA-E grants; nominations due Oct. 1 for AOCS awards

Ben Welter - Friday, September 21, 2018

ARPA-E this week awarded $28 million to 10 R&D projects aimed at developing energy storage systems to power the electric grid for up to 100 hours, improving grid resilience and performance. Thermal energy storage projects were among the winners. The U.S. Department of Energy's National Renewable Energy Laboratory won a $2.79 million grant to “develop a high-temperature, low-cost thermal energy storage system using a high-performance heat exchanger and closed loop Brayton cycle turbine to generate power.” Michigan State University won $2 million to "explore a process that heats a bed of magnesium manganese oxide to release oxygen, and then passes air over the particle bed to start a chemical reaction that releases the heat to drive a gas turbine generator," Greentech Media reported.

Mark Richards, applications engineering manager at Phase Change Energy Solutions, will give a presentation on "Testing and Modeling of Phase Change Materials for Building Applications" at next week's Building Performance Analysis Conference and SimBuild in Chicago.

• Nominations for nine Scientific and Society Awards given by the American Oil Chemists' Society are due Oct. 1. The awards recognize leaders in fats, oils, proteins and surfactants who have advanced the science and technology of their interest areas.

The agenda has been posted for the CSP Madrid 2018 conference and exhibition, to be held Nov. 13-14. Topics include "Advancements in Thermal Storage Systems with Molten Salt" and "Thermal storage + PV, gas or other power generations."

Ember Technologies announced this week that its PCM-equipped coffee mug is now available at Bloomingdale's

• New from Decision Databases: "2018-2023 Global Temperature Controlled Packaging Solutions Market Report

Entropy Solutions has been granted a U.S. trademark for the tagline "Global Authority on Phase Change Material," in use since 2014.  

• How green is your lab? The EU Science Hub invites European Union residents to submit photos that show how to reduce waste, save energy, maximize equipment efficiency or anything else that makes a lab green. Science Hub will post submitted photos on its Facebook page. The entry deadline is Oct. 19. The winning photographer will receive a two-day trip to Berlin to visit the hub's ARTEFACTS exhibition, where the winning photo will be displayed.   

• Children curious about science will have a chance to chat with researchers, observe demonstrations and take part in hands-on experiments at the annual "Science is Wonder-ful!" event Sept. 25-26 in Brussels, Belgium. The event, sponsored by the European Commission and European Parliament, drew 4,600 participants in 2017.

• The United States has removed 142 chemical and plastic products, including paraffin wax, from the latest round of tariffs that it will impose on Chinese imports next week, the American Chemistry Council said Tuesday.

• The Thermal Energy Systems Lab at Nanyang Technological University in Singapore has an opening for a post-doctoral researcher to assist in the development of thermal energy storage material and systems. For details, contact Alessandro Romagnoli, a.romagnoli@ntu.edu.sg. "We are looking for an expert on industrial energy efficiency with capabilities to run exergy/energy analysis, skills with flow diagrams (e.g. Sankey) and well grounded in current and future technology development," Romagnoli said. "This is a short-term appointment (either full time or part-time)." 

Research roundup: Heat capacities of potential organic PCMs; asphalt binders; novel smart textile; modeling hysteresis; more

Ben Welter - Tuesday, September 18, 2018

From Journal of Chemical Thermodynamics:

Heat capacities of potential organic phase change materials

From Renewable Energy:

Effects of microencapsulated phase change materials on the performance of asphalt binders
An improved, generalized effective thermal conductivity method for rapid design of high temperature shell-and-tube latent heat thermal energy storage systems
Multi-objective optimisation of thermal energy storage using phase change materials for solar air systems

From Energy:

A comprehensive study of properties of paraffin phase change materials for solar thermal energy storage and thermal management applications
Evaluation of a novel solar driven sorption cooling/heating system integrated with PCM storage compartment

From Chemical Engineering Journal:

Shape-stabilized phase change materials based on porous supports for thermal energy storage applications
Novel smart textile with phase change materials encapsulated core-sheath structure fabricated by coaxial electrospinning

From International Journal of Heat and Mass Transfer:

Experimental research on the effective heating strategies for a phase change material based power battery module
Modeling hysteresis in the phase transition of industrial-grade solid/liquid PCM for thermal energy storages

From Applied Thermal Engineering:

Determination of heat transfer coefficients in direct contact latent heat storage systems

PCM briefing: UCF wins $360,000 grant to develop solar storage module; Nike unveils prototype cooling vest

Ben Welter - Monday, September 17, 2018

• The University of Central Florida was awarded a $360,000 grant from the National Science Foundation last month to develop and commercialize a grid-connected solar storage module. UCF is partnering with battery maker AllCell Technology to develop the system, known as iPV++. The system will use smart inverters and battery management to deliver stable and predictable PV-based solar power for grid-tied applications. AllCell phase change composite material will provide passive thermal management of the system's lithium-ion battery modules. Dr. Issa Batarseh, UCF electrical engineering professor and the project principal investigator, says use of the material "guarantees the safety of the battery modules, simplifies the installation and maintenance, and significantly increases lifetime due to temperature control.”

Nike prototype cooling vest• A prototype cooling vest developed by the Nike Sport Research Lab made its public debut at the U.S. Open in Flushing Meadow, N.Y., earlier this month. Scorching heat and high humidity marked the tennis tournament's later rounds, prompting players to do whatever they could to stay cool. Rafael Nadal, right, was among the players seen wearing the vest courtside. The form-fitting vest features four cooling packs -- two in the front and two in the back -- to quickly cool down players between sets and before and after matches. Nike declined to answer questions about the vest, but it appears similar to phase change vests already on the market, including versions made by TechNiche and Glacier Tek.

Peli BioThermal, the temperature-controlled packaging company, has opened a service center in Indianapolis. The company says the 50,000-square-foot facility will be one of the largest in Peli's Credo on Demand network.

Registration is open for the next ARPA-E Energy Innovation Summit, to be held in Denver, Colo., July 8-10, 2019. The 10th annual conference and technology showcase will "bring together experts from different technical disciplines and professional communities to think about America’s energy challenges in new and innovative ways." 

• Australian energy storage startup 1414 Degrees began trading on the Australian Securities Exchange last week after raising $16.3 million AUS as part of its initial public offering. The company's technology stores electricity as thermal energy by heating an melting containers full of silicon at a fraction of the cost of lithium-ion batteries.

NETenergy, a Chicago startup that licenses technology developed at the University of Illinois at Chicago, plans to commercialize its hybrid air-conditioning system with funding from the U.S. Department of Energy. The $500,000 grant was awarded to NETenergy's partner, the National Renewable Energy Laboratory. The International Copper Association and Ingersoll-Rand are commercial partners on the grant, which will provide cash and in-kind matching funds. The technology uses phase change composites to store cold energy, allowing customers to shift A/C production to off-peak hours, when electricity is cheaper. 

• Costs for U.S. chemical distributors could rise by nearly $1.3 billion if the United States imposes tariffs on $200 billion worth of goods from China, according to an analysis by John Dunham & Associates. Job losses could top 5,900, the analysis said.

PCM briefing: AOCS issues call for papers; EnergyNest making thermal batteries in Rotterdam

Ben Welter - Monday, September 10, 2018

• The American Oil Chemists' Society has issued a call for papers for its 2019 meeting and expo, May 5-8 in St. Louis, Mo. Topics include new technologies for oil processing; oleochemicals and green chemistry; and advanced methods of analysis, including automation. The deadline for priority consideration is Nov. 1. After that date, submissions will be considered as time and space permit.

EnergyNest thermal batteryEnergyNest announced that manufacturing of its industrial-scale thermal batteries has begun at the company's new hub in Rotterdam. The battery, shown at right, consists of steel cassettes with pipes encased in Heatcrete, a special type of concrete developed in partnership with HeidelbergCement

• A number of prospective postdoc researchers and their advisors are exploring the possibility of remote work, citing work/life balance and other advantages. "The setup is not without challenges," The Scientist reports, "from simple communication difficulties to feelings of isolation, leaving postdocs to come up with bespoke solutions to their unusual situations." 

Registration is open for the 2019 ASHRAE Winter Conference, to be held Jan. 12-16 in Atlanta. The conference's technical program will feature more than 100 sessions and 300 speakers. Five full-day and 15 half-day seminars will be offered, including "Advanced Designs for Net Zero Buildings," "Solar PV & Thermal System Analysis and Design" and "Thermal Energy Storage Systems for Air Conditioning."

Ecozen Solutions Pvt. Ltd. of Pune has won the second edition of the FedEx India Small Business Grant Contest 2018. The grant is worth about $21,000. Ecozen makes portable solar cold rooms for use on small farms. The system's thermal storage unit can store power for more than 36 hours in case of cloudy or rainy weather.

• The Fraunhofer Institute for Solar Energy Systems ISE has developed self-learning artificial neural networks for the control of solar thermal heating systems. Fraunhofer said the savings potential, compared to an optimized conventional regulation for existing buildings, is at least 7 percent.

• Registration is open for Advancements in Thermal Management 2019, to be held Aug. 7-9 in Denver. Topics will include thermal modeling, emerging technologies, market opportunities, and thermal sensing and measurement. 

• Mounting trade tensions between China and the United States have plunged global shipping markets into a continuing state of uncertainty. Peter Sand, chief shipping analyst at international shipping association Bimco, said in an interview with World Grain that the trade war could “derail the current global” upswing in shipping, the highest since 2011. The American Chemistry Council, meanwhile, released a study showing that moving forward with the latest round of tariffs would spark retaliation from China that would put nearly 55,000 jobs and around $18 billion in U.S. domestic activity at risk.

Research roundup: Impact of doping on bonding energy hierarchy; battery thermal management; more

Ben Welter - Friday, September 07, 2018

From Journal of Applied Physics:

Impact of doping on bonding energy hierarchy and melting of phase change materials

From International Communications in Heat and Mass Transfer:

Two zone model for mushy region of solid–liquid phase change based on Lattice Boltzmann method

From Applied Sciences:

Synthesis and Investigation of Thermal Properties of Highly Pure Carboxylic Fatty Esters to Be Used as PCM

From Solar Energy Materials and Solar Cells:

Fabrication of novel slurry containing graphene oxide-modified microencapsulated phase change material for direct absorption solar collector

From Buildings:

Potential of Thermal Energy Storage Using Coconut Oil for Air Temperature Control

From International Journal for Research in Engineering Application and Management:

Development of Phase Change Material/ Cooling Plate Coupled Battery Thermal Management System Using CFD

From Applied Thermal Engineering:

A novel graphite-PCM composite sphere with enhanced thermo-physical properties

From Journal of Cleaner Production:

Building-integrated solar thermal system with/without phase change material: Life cycle assessment based on ReCiPe, USEtox and Ecological footprint

From Thermal Science and Engineering Progress:

Role of metallic foam in heat storage in the presence of nanofluid and microencapsulated phase change material

From International Journal of Heat and Mass Transfer:

Heat and flow analysis of a water droplet on hydrophobic and hydrophilic phase change material