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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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Research roundup: Natural convection heat transfer; simulation of hysteresis effects; PCM in roofs; more

Ben Welter - Wednesday, June 20, 2018

From Energy Conversion and Management:

Effect of using nanoparticles on the performance of thermal energy storage of phase change material coupled with air-conditioning unit
Numerical study on the effect of non-uniform magnetic fields on melting and solidification characteristics of NEPCMs in an annulus enclosure
Solidification behavior of binary eutectic phase change material in a vertical finned thermal storage system dispersed with graphene nano-plates

From International Communications in Heat and Mass Transfer:

A method to evaluate natural convection heat transfer in microencapsulated phase change material (MPCM) slurry: An experimental study
Dynamic of plumes and scaling during the melting of a Phase Change Material heated from below

From Applied Thermal Engineering:

Experimental investigation of the thermal performance of heat pipe assisted phase change material for battery thermal management system
Low-temperature macro-encapsulated phase change material based thermal energy storage system without air void space design

From Energy and Buildings:

Modeling and experimental validation of an algorithm for simulation of hysteresis effects in phase change materials for building components
Thermal performance and numerical simulation of geopolymer concrete containing different types of thermoregulating materials for passive building applications

From Solar Energy:

How to enhance thermal energy storage effect of PCM in roofs with varying solar reflectance: Experimental and numerical assessment of a new roof system for passive cooling in different climate conditions

From Energy:

A facile approach to synthesize microencapsulated phase change materials embedded with silver nanoparticle for both thermal energy storage and antimicrobial purpose

From Reference Module in Materials Science and Materials Engineering:

Materials, Design and Development of Latent Heat Storage Systems for Medium and Large-Scale Applications: Issues and Challenges

From Physica A: Statistical Mechanics and its Applications:

Melting process in porous media around two hot cylinders: Numerical study using the lattice Boltzmann method

From Solar Energy Materials and Solar Cells:

Synthesis and characterization of chain-extended and branched polyurethane copolymers as form stable phase change materials for solar thermal conversion storage

From Construction and Building Materials:

Investigation of different materials for macroencapsulation of salt hydrate phase change materials for building purposes

From Journal of Energy Storage:

CFD thermal energy storage enhancement of PCM filling a cylindrical cavity equipped with submerged heating sources
Performance analysis of industrial PCM heat storage lab prototype

PCM briefing: DowDuPont shifts to small-scale R&D projects; Viking Cold Solutions has opening for business development manager

Ben Welter - Monday, June 04, 2018

Arktek vaccine carrierWired takes a close look at Arktek, "the Ebola vaccine's high-tech thermos." The World Health Organization is using the PCM-equipped container to transport the temperature-sensitive vaccine to wherever it's needed, whatever the conditions. The container is designed keep payloads colder than -65 C for five days.

• With an eye toward increased profits, CEO Edward Breen says DowDuPont is moving away from large-scale R&D projects in favor of less risky initiatives of $30 million or less.

Viking Cold Solutions has posted an opening for a business development manager for the Northeastern United States.

ASHRAE has published a new standard describing a methodology to apply building energy modeling throughout the design process. ASHRAE Standard 209-2018 defines minimum requirements for providing energy design assistance using building energy simulation and analysis.

Pelican BioThermal is opening its first Canadian drop point for the Credo on Demand rental program. The new drop point, at ATS Healthcare headquarters in Toronto, offers customers an additional location to return temperature-control pallet and bulk shippers. 

PCM briefing: Texas undergrads win ASHRAE equipment grant; 1414 Degrees among exhibitors at Australia energy storage conference

Ben Welter - Monday, May 21, 2018

• A University of North Texas research project, “Design of Energy Recovery Heat Exchanger Coupled with Phase Change Materials for Building Temperature Control,” is one of 25 undergraduate projects awarded a 2018 equipment grant from ASHRAE. The grants, totaling more than $113,000, will help the winning students complete undergraduate projects at schools around the world.

• New from HTF Market Intelligence: "United States Cold Chain Equipments Market Report 2018"

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

• New from QY Research: "Global Thermal Energy Storage (TES) Industry 2018 Market Research Report"

CouchBed

• The retail market is full of PCM-topped mattresses, pillows and seat cushions. Here's the first fold-out couch we've seen that features the temperature-control technology. The CouchBed, made by an Arizona company, is a 10-inch memory foam mattress that’s “made with 100% CertiPur certified ultra-dense memory foam, combined with phase change material to actively cool the sleeping surface."

• The U.S. Department of Energy has announced $72 million for new projects to advance high-temperature concentrating solar power technologies. The high-temperature thermal storage systems targeted by this program seek to achieve at least 700 degrees C, which would boost the efficiency and lower the cost of electricity. Awardees include Brayton Energy, Hampton, N.H, $7.6 million; National Renewable Energy Laboratory, Golden, Colo., $7 million; and Sandia National Laboratories, Albuquerque, N.M., $9.5 million.

• Under a new joint development agreement, the Moroccan Agency for Sustainable Energy will join Cleanergy AB's board of directors and help the Swedish firm advance its concentrated solar power and storage technology. The agency will fund a “substantial part” of Cleanergy's research and development work on thermal energy storage. Cleanergy, in turn, will be able to test its technology using the agency's facility in Ouarzazate, Morocco.

• A Ph.D. candidate at Delft University of Technology outlines a strategy to maximize the potential of aquifer thermal energy storage and phase out the use of natural gas in the Netherlands.

• Thermal energy storage company 1414 Degrees will be among more than 60 companies from around the world scheduled to attend the Australian Energy Storage Conference and Exhibition May 23-24 at the Adelaide Convention Center. Other exhibitors include Tesla, Toshiba, GE and Victron Energy.

Research roundup: Thermoelectric generator system; solar chimney; novel thermal management system for lithium-ion battery pack; more

Ben Welter - Friday, May 18, 2018

From Energy:

Protection and Thermal Management of Thermoelectric Generator System Using Phase Change Materials: An Experimental Investigation
Performance analysis of a novel thermal management system with composite phase change material for a lithium-ion battery pack

From Solar Energy:

Efficient energy storage technologies for photovoltaic systems
The experimental appraisement of the effect of energy storage on the performance of solar chimney using phase change material

From Applied Thermal Engineering:

Improving thermal management of electronic apparatus with paraffin (PA)/expanded graphite (EG)/graphene (GN) composite material
Experimental exploration of incorporating form-stable hydrate salt phase change materials into cement mortar for thermal energy storage

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:

Numerical investigation of thermal and optical performance of window units filled with nanoparticle enhanced PCM

From Applied Energy:

Cost estimation and sensitivity analysis of a latent thermal energy storage system for supplementary cooling of air cooled condensers
Influence of design on performance of a latent heat storage system at high temperatures

From Energy Conversion and Management:

Preparation and investigation of distinct and shape stable paraffin/SiO2 composite PCM nanospheres

From Energy and Buildings:

Parametric Analysis of Using PCM Walls for Heating Loads Reduction

PCM briefing: BASF to spend $2.2 billion on R&D; Sunamp heat batteries qualify for Scottish loan program

Ben Welter - Monday, May 14, 2018

Chemical & Engineering News reports that the top 50 U.S. chemical producers generated $285.4 billion in chemical revenues in 2017, a 9.4 percent increase over 2016. 

• Under its new CEO, Martin Brüdermüller, BASF is planning to pour $2.2 billion into research and development, making BASF the second-highest investor in innovation in the chemicals sector after DuPont

Grace HsiaWarmilu LLC founder Grace Hsia, right, is on Crain's 20 in Their 20s list honoring Michigan's rising young leaders. Warmilu makes a PCM-equipped infant warming blanket.   

Axiom Exergy of Richmond, Calif., has raised $7.6 million in Series A funding, for a total of $12.5 million raised to date. The round was co-led by GXP Investments and Shell Ventures. Axiom's PCM-based "refrigeration battery" is designed to reduce energy supermarket energy costs. 

Sunamp Ltd. is applauding the Scottish government's decision to include heat batteries to its Home Energy Scotland Loan program. Homeowners and private landlords are now eligible to apply for an interest-free loan of up to 6,000 pounds to install Sunamp's PCM-based heat battery systems.

• Albuquerque-based SAVSU Technologies is launching two new high-performance shipping containers branded as Evo Extreme. The containers are designed for the 2-8C and -80C temperature ranges.

Emirates District Cooling has won a contract to supply a district cooling system to the Expo Dubai 2020 event. The system will have a capacity of 60,000 tons of refrigeration. 

• Georg Rodriguez, managing director at MUTZ Engineering mbH, will present a free lecture, presumably in German, on "phase change materials for temperature management and energy storage in buildings" on Tuesday, May 15, at the KEBAB lecture room in Berlin.

Research roundup: HDPE graphite composite; PCM-integrated PV modules; solar domestic hot water tank with PCM in the mantle; more

Ben Welter - Monday, May 07, 2018

From Particuology:

High density polyethylene (HDPE) — Graphite composite manufactured by extrusion: A novel way to fabricate phase change materials for thermal energy storage

From Solar Energy:

Life cycle costing as a bottom line for the life cycle sustainability assessment in the solar energy sector: A review

From Energy Conversion and Management:

Improving the thermal regulation and efficiency enhancement of PCM-integrated PV modules using nano particles
Climatic behaviour of solar photovoltaic integrated with phase change material

From Energy and Buildings:

Thermal performance assessment and improvement of a solar domestic hot water tank with PCM in the mantle
Fabrication and characterization of fatty acid/wood-flour composites as novel form-stable phase change materials for thermal energy storage

From Renewable Energy:

Possibility of using PCMs in temperature control and performance enhancements of free stand and building integrated PV modules
Performance evaluation of nano-enhanced phase change materials during discharge stage in waste heat recovery

From International Journal of Heat and Mass Transfer:

Microencapsulated n-eicosane PCM suspensions: Thermophysical properties measurement and modeling

From Journal of Energy Storage:

Numerical investigation of different PCM volume on cold thermal energy storage system

From Renewable and Sustainable Energy Reviews:

Methods of heat transfer intensification in PCM thermal storage systems: Review paper

From Applied Thermal Engineering:

A Review on Thermal Management Methods for Robots

Cost-savings calculator opens doors to conversations about TES system

Ben Welter - Monday, May 07, 2018

Case studies, white papers, product descriptions and “how it works” videos are effective ways to market thermal energy storage systems. But what potential customers really want to know is: “How much will your system save me?”

Viking Cold Solutions’ new web-based calculator can answer that question.

Viking makes TES systems designed to stabilize temperatures and reduce cold storage energy costs by up to 35 percent. The systems pair phase change material with intelligent controls and remote energy-monitoring software.

“It’s a new technology in an old industry,” said Damon Vance, who joined the Houston company last year as marketing director. “We use the tool as a starting point for conversations about what we could potentially save customers. It just helps open doors and start conversations.”

The calculator, www.vikingcold.com/estimate-energy-savings/calculator, is adapted from a more sophisticated tool used by the company for years to provide customers with detailed estimates of potential savings. The pared-down version asks users to provide freezer square footage, temperature set point, equipment type, condenser type, compressor load control, defrost type and average kWh rate. A summary of the results is displayed in the web browser. The user can fill out a form to get more detailed results.

Vance said several hundred visitors have completed the form since the tool was introduced a few months ago. More than half of requests, he said, have led to “legitimate customer conversations.”

“We’ve got good feedback on it,” he said. “We use it as a sales tool, but it also sets realistic expectations for customers and opens their eyes to the potential of the technology.”

Viking recently installed one of its systems at a Dreisbach Enterprises food warehouse in Richmond, Calif. The system is designed to ensure temperature stability in the freezer space while reducing the electricity demand by over 55 percent for 11 hours each day – from 850 kilowatts to 400 kilowatts – and reducing total electricity consumption in the 93,000-square-foot warehouse by as much as 35 percent.

www.vikingcold.com/estimate-energy-savings/calculator

PCM briefing: Job opening at Axiom Exergy; 1414 Degrees plans IPO

Ben Welter - Monday, May 07, 2018

TJ Rizzo, senior vice president of international operations at Cold Chain Technologies, will give a presentation on "Temperature Excursion Analysis" at the Global Clinical Supplies Group conference in Atlanta April 30.  

• Axiom Exergy, maker of behind-the-meter thermal energy storage systems, has posted an opening for a director of business development.

• Thermal energy storage company 1414 Degrees is planning an initial public offering. The Australian company hopes to raise $30 million to $50 million AUD.

Yusuf Yusufoglu, R&D technology team leader at Arcelik, and Orkun Kaymakçı, R&D specialist at Arcelik, received the "Best PCM Paper Award" at EnerSTOCK 2018 in Turkey this week, according to a LinkedIn post. Their topic: "Application of Phase Change Materials in Household Appliances." I would provide a link to the EnerSTOCK 2018 website for those interested in learning more about the conference, but the site appears to have been hacked; visitors are redirected to a site flagged as "deceptive."

Neothermal Energy Storage Inc. is one of 16 Canadian tech startups selected to participate in the Volta Cohort Pitch Event May 16 in Halifax. Up to five companies will receive $25,000 in investment, mentorship and resources. The Halifax company's electric thermal storage heater is designed to supplement heating systems in residential housing. It takes advantage of time-of-day electricity rates to lower heating costs by up to 50 percent.

• Chicago-based NETenergy is one of 11 energy startups selected to participate in the VERGE Accelerate event in Hawaii in June. The finalists will pitch to a live audience of business leaders, government officials and investors, as well as to a global online audience. 

• New from QY Research: "Global Thermal Energy Storage Systems Market Professional Survey Report 2018" and "Global Temperature Controlled Pharmaceutical Packaging Market Research Report 2018"

• New from HTF Market Report: "Global Cold Chain Equipments Market Research Report 2018"

PCM briefing: Monodraught wins a Queen's Award; Dulas delivers 50 PCM-equipped solar refrigerators to Pakistant

Ben Welter - Monday, April 30, 2018

John Curley, former technical sales manager at Conex Bänninger and Viega Ltd., has rejoined Monodraught Ltd. as technical consultant. 

• Monodraught, of High Wycombe, United Kingdom, won a Queen's Award for Enterprise this week for its Cool-phase system, which provides "intelligent control of ventilation and cooling using phase change materials." Peli BioThermal of Bedfordshire also received a Queen's Award. The temperature-control packaging company was honored for its "export expertise." 

Dulas Ltd. has delivered 50 of its VC110SDD solar-powered refrigerators to Pakistan. The 110-liter refrigerators, accredited by the World Health Organization, use paraffin-based phase change material to keep vaccines at temperatures ranging from 5°C to 43°C. Renewable Energy Magazine reports that the U.K. company has also launched a temperature-monitoring device that can record and transmit the performance of the refrigerators in real time at any location in the world. 

Andrew Michler's MARTaK Passive House in Colorado has been named the overall winner in Green Builder's 10th annual Green Home of the Year Awards. Natural, nontoxic and recycled materials are used throughout the 1,200-square-foot house. Biobased phase change material with a melt point of 23º C is used to help even out temperature spikes. Five hundred square feet of ENRG Blankets made by Phase Change Energy Solutions is installed a south-facing interior wall. 

• The agenda has been released for the next Cold Chain Global Forum, set for Sept. 24-27 in Philadelphia. The lineup includes discussions on "CRT Product Solutions: How Can We Use Phase Change Materials or Water-based Refrigerants to Successfully Ship Compliance Ready Materials?" and "How Can We Achieve Sustainability & Environmental Packaging Designs in Temperature Controlled Packaging?" Also on the agenda are sessions on "Improving Sustainability & Environmental Packaging to Reduce Waste and Ensure Temperature Compliant Packaging Designs" and "Maintaining Temperature Control Distribution with New Reduced Delivery Targets" and a master class, "Certification Program: Life-Cycle Development of Temperature Assurance Packaging." 

Safer Chemicals in Products 2018 will be held in Boston Sept. 17-18. Topics include "Making the Business Case for Safer Chemicals" and "Substitution Strategies in Europe and Canada."

• New from QY Research: "Temperature Controlled Packaging Solutions Market Size, Share & Trends Analysis Report By Product, By Type, By Region, By Application, Competitive Landscape, And Segment Forecasts 2018-2025"

Research roundup: Solar absorption cooling systems; air-PCM storage unit; cement slurry; more

Ben Welter - Tuesday, April 24, 2018

Performance enhancement of solar absorption cooling systems using thermal energy storage with phase change materials [Applied Energy]

Experimental validation of an air-PCM storage unit comparing the Effective Heat Capacity and Enthalpy methods through CFD simulations [Energy]

Controlling the heat evaluation of cement slurry system used in natural gas hydrate layer by micro-encapsulated phase change materials [Solar Energy]

Thermal properties and thermal conductivity enhancement of composite phase change material using sodium acetate trihydrate–urea/expanded graphite for radiant floor heating system [Applied Thermal Engineering]

Study on heat-transfer mechanism of wallboards containing active phase change material and parameter optimization with ventilation [Applied Thermal Engineering]

Life Cycle Assessment of Innovative Materials for Thermal Energy Storage in Buildings [Procedia CIRP]