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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: Thermoplastic polyurethane blends; simulation of supercooling and convection; battery thermal management; more

Ben Welter - Tuesday, September 11, 2018

From Frontiers in Materials:

Thermoplastic polyurethane blends with thermal energy storage/release capability

From Energies:

Review of Reactors with Potential Use in Thermochemical Energy Storage in Concentrated Solar Power Plants

From Progress in Computational Fluid Dynamics:

Towards the simulation of supercooling and convection in phase change materials using a thermal lattice Boltzmann method

From Nanomaterials:

Palm Kernel Shell Activated Carbon as an Inorganic Framework for Shape-Stabilized Phase Change Material

From Journal of Power Sources:

A comprehensive review on a passive (phase change materials) and an active (thermoelectric cooler) battery thermal management system and their limitations

From Applied Energy:

Process integration of thermal energy storage systems – Evaluation methodology and case studies

From Journal of Nanomaterials:

Effects of Biceramic AlN-SiC Microparticles on the Thermal Properties of Paraffin for Thermal Energy Storage

PCM briefing: Ice Energy seeks distributors in Australia, Mexico and Saudi Arabia; Thermetrics' new manikin can measure PCM effects

Ben Welter - Friday, August 31, 2018

• In an interview with Energy Storage Report, CEO Mike Hopkins discussed Ice Energy's plans to distribute its ice-based thermal energy storage technology in Australia, Mexico and Saudi Arabia. In June, the California company announced a $40 million cash infusion from Argo Infrastructure Partners to finance the delivery of Ice Energy's residential and commercial thermal storage contracts.

Thermetrics manikin ANDIThermetrics says its new ANDI sweating thermal manikin has the "unrivaled ability" to measure both positive and negative heat flux and to respond to changing environmental conditions with "unprecedented" speed and accuracy. The new manikin was unveiled this week at the 12th International Meeting of Manikins and Modeling, hosted by the Swiss research institute Empa, in St. Gallen, Switzerland. The manikin can be used to evaluate the thermal performance of apparel, blankets and seats, as well as quantify the cool-to-touch or warm-to-touch temperature-buffering effect in fabrics containing phase change materials. 

• New from LP Information: "2018-2023 Global Eutectic Phase Change Material Consumption Market Report"

• New from Research and Markets: "Phase Change Materials (PCMs) - A Global Market Overview"

• The journal Nature reports that India is cracking down on predatory journals, publications that "actively solicit manuscripts and charge authors hefty fees without providing the services they advertise, such as editing and peer review." 

• Life science laboratories are finding creative ways to reduce the amount of plastic they throw away, The Scientist reports. 

Sonoco ThermoSafe will hold its next Leading Minds Seminar Nov. 6-7 at the Sheraton Skyline Hotel Heathrow, London, England. 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.

Viking Cold Solutions says the thermal energy storage system the company installed at a 93,000-square-foot frozen food distribution center in Richmond, Calif., has reduced peak period energy consumption by up to 43 percent and reduced overall freezer energy consumption by 35 percent. Viking installed the system at the Dreisbach Enterprises warehouse earlier this year. Plastic panels filled with a proprietary salt hydrate are installed evenly throughout the warehouse atop the existing product racks. The PCM absorbs heat as it melts, allowing chillers to run less frequently and still keep the warehouse within a few degrees of the target temperature. The system also includes intelligent controls and sensors to optimize energy use and alert managers to temperature abnormalities, equipment failure and power outages.

Research roundup: Shape-stable PCMs in building enclosures; eutectic fatty acid/damar gum; more

Ben Welter - Tuesday, August 28, 2018

From Sustainable Cities and Society:

A review on applications of shape-stabilized phase change materials embedded in building enclosure in recent ten years

From Solar Energy Materials and Solar Cells:

Microencapsulation of eutectic and hyper-eutectic Al-Si alloy as phase change materials for high-temperature thermal energy storage

From Journal of Chemical Thermodynamics:

Thermal analysis and heat capacity study of polyethylene glycol (PEG) phase change materials for thermal energy storage applications

From Exergy for A Better Environment and Improved Sustainability:

Investigation of Thermal Characteristic of Eutectic Fatty Acid/Damar Gum as a Composite Phase Change Material (CPCM)

From Composites Part B: Engineering:

Fabrication, morphology and thermal properties of octadecylamine-grafted graphene oxide-modified phase-change microcapsules for thermal energy storage

From Chemical Engineering Transactions:

Study on the Temperature Characteristics of Phase-change Energy Storage Building Materials Based on ANSYS [pdf]

From International Journal of Low-Carbon Technologies:

Free cooling using phase change material for buildings in hot-arid climate

From International Journal of Energy Research:

Experimental study on cold storage box with nanocomposite phase change material and vacuum insulation panel

PCM briefing: South African utility scraps CSP plant; Pelican BioThermal seeks Americas sales director

Ben Welter - Monday, August 27, 2018

• The second round of U.S. and China tariffs took effect last week, covering about $4.2 billion in chemicals and plastics. Based on 2017 exports to China, ICIS News says the U.S. commodity chemical products most affected are monoethylene glycol, styrene, EVA copolymers, linear low-density polyethylene, high-density polyethylene (HDPE) and ethylene dichloride.

Dr. Joachim KuhnVa-Q-tec AG's management board has extended the contract of CEO Dr. Joachim Kuhn, the company's founder, through Dec. 31, 2023.

• The South African utility Eskom has decided to scrap development of the 100MW Kiwano concentrated solar power plant and instead invest the money in battery storage.

Pelican BioThermal has an opening for director of sales - Americas in the company's U.S. office in Plymouth, Minn. The director will "oversee all aspects of the growth and development of BioThermal market" in North and South America. Job candidates researching Peli may want to watch the company's latest videos, which show how to assemble the new CoolPall Flex temperature-controlled shipper.

NorthVolt has an opening for a thermal/mechanical design engineer for battery system development at the company's office in Stockholm, Sweden. NorthVolt is building one of the first European large-scale lithium-ion battery factories.

• New from TMR Research: "Thermal Energy Storage Market - Global Industry Analysis, Size, Share, Trends, Analysis, Growth, and Forecast 2017 - 2025"

• New from QY Research: "Global Phase Change Materials (PCM) Market Professional Survey Report 2018"

• New from Reports and Markets: "Global Cold Chain Equipments Market Insights, Forecast to 2025"

• In an Imaginasium interview, Encapsys President Mary Goggans talks about the Appleton, Wis., microencapsulator's transition to a standalone company over the past two years.

Research roundup: Microencapsulated paraffin; PCM plasterboard; palmitic acid ethyl ester; more

Ben Welter - Tuesday, August 21, 2018

From Experimental Thermal and Fluid Science:

Thermal–hydraulic characteristics of ethylene glycol aqueous solutions containing microencapsulated paraffin

From Applied Thermal Engineering:

Three-dimensional numerical and experimental investigation of the behavior of solar salts within thermal storage devices during phase change

From Renewable Energy:

Numerical investigation on the effect of different parameters in enhancing heat transfer performance of photovoltaic thermal systems

From Energy Conversion and Management:

Development of a calorific value controller using bimetal fin channel for PCM heat storage
Experimental and numerical investigation for improving the thermal performance of a microencapsulated phase change material plasterboard

From Polymers:

Fabrication and Performance of Composite Microencapsulated Phase Change Materials with Palmitic Acid Ethyl Ester as Core

From Cement and Concrete Composites:

Elucidating the influences of compliant microscale inclusions on the fracture behavior of cementitious composites

From AIP Conference Proceedings:

Simulation and validation of PCM melting in concentric double pipe heat exchanger
Modeling and experimental validation of the thermal behavior of PCM using DSC input data
Thermal behavior of melting paraffin wax process in cylindrical capsule by experimental study

From Energy and Buildings:

A novel building material with low thermal conductivity: Rapid synthesis of foam concrete reinforced silica aerogel and energy performance simulation

Research roundup: Dynamic behavior of PCM-27; Al2O3, SiO2 and TiO2 nano-inclusions; coacervation microencapsulation; more

Ben Welter - Tuesday, August 14, 2018

From International Journal of Thermal Sciences:

An experimental and a numerical analysis of the dynamic behavior of PCM-27 included inside a vertical enclosure: Application in space heating purposes

From Journal of Molecular Liquids:

Thermal conductivity enhancement in organic phase change material (phenol-water system) upon addition of Al2O3, SiO2 and TiO2 nano-inclusions

From Applied Thermal Engineering:

Experimental and numerical investigations of nano-additives enhanced paraffin in a shell-and-tube heat exchanger: A comparative study
Three-dimensional numerical and experimental investigation of the behavior of solar salts within thermal storage devices during phase change

From Energy Conversion and Management:

Formulation of a model predictive control algorithm to enhance the performance of a latent heat solar thermal system
Performance assessment of a new hydrogen cooled prismatic battery pack arrangement for hydrogen hybrid electric vehicles

From Carbohydrate Polymers:

Chitosan composite microencapsulated comb-like polymeric phase change material via coacervation microencapsulation

From Renewable Energy:

Analytical Considerations on Optimization of Cascaded Heat Transfer Process for Thermal Storage System with Principles of Thermodynamics

From Proceedings of Microscopy & Microanalysis 2018:

In-Situ TEM Observation of Crystallization in Phase-Change Material

From International Journal of Energy Research:

Patent application: Method for low-temperature microencapsulation of phase change material

Ben Welter - Sunday, August 12, 2018

U.S. patent application 20180223146 (inventors Mohammed Farid, Auckland, New Zealand, and Refat Al Shannaq, Shaheen Al-muhtaseb and Jamal Kurdi, Doha, Qatar):

Farid patent image"The method for low temperature microencapsulation of phase change materials or other components includes the following steps: (a) preparing a phase change emulsion including droplets of at least one active phase-change material in water with a surfactant; (b) adding a monomer of at least one encapsulating agent; (c) introducing the phase change emulsion into a UV reactor while stirring the emulsion; and (d) initiating the photo polymerization of monomers using at least one UV lamp inside the UV reactor for photo polymerization until the phase change material is encapsulated within a polymeric shell to form microcapsules. The microcapsules obtained by this process may have a diameter between about 0.5 to about 2 μm. Other sizes can also be obtained by changing stirring speed of the emulsion."

http://www.freepatentsonline.com/20180223146.pdf

PCM briefing: Shipping costs rise for chemical companies; Inventure to build plant in China

Ben Welter - Saturday, August 11, 2018

Viking Cold Solutions founder and board chairman Paul Robbins, who retired as president at Caribbean Shipping Services in July, says he plans to resume a more active role in the day-to-day operations at Viking. The Houston company makes TES systems that pair phase change material with intelligent controls and remote energy-monitoring software to reduce commercial refrigeration costs.  

Chemical Week reports that shipping costs are on the rise for chemical companies as capacity tightens and truck traffic shifts to railroads.  

Inventure Renewables of Tuscaloosa, Ala., is partnering with Wilmar International and Desmet Ballestra Group on a new manufacturing plant in China's Jiangsu province, the Birmingham Business Journal reports. Construction is expected to begin in 2019. The plant will use Inventure’s soap carbonate technology to convert low-value processing residues into uncontaminated free fatty acids.

Maurizio ZaglioMaurizio Zaglio‎, right, international business development manager at Sunamp Ltd., was in Hangzhou, China, this week to present the company's new products at the 2018 China Heat Pump Annual Conference.

• New from Research and Markets: "Phase Change Materials (PCMs) - A Global Market Overview"

ARPA-E has issued a funding opportunity of up to $35 million for the High Intensity Thermal Exchange through Materials and Manufacturing Processes program, to develop new approaches and technologies for the design and manufacture of high-temperature, high-pressure, and highly compact heat exchangers. 

• The American Chemistry Council confirmed this week that high-density polyethylene (HDPE) is on the list of U.S. petrochemicals and plastics targeted for $16 billion in retaliatory tariffs from China. "Prospects of trade war are eroding business confidence from the Tax Cuts and Jobs Act," says the ACC's Kevin Swift. The U.S. economy is expected to grow by 2.4 percent in 2019, Morningstar reports, but economists have cut the average forecast for 2020 from 2 percent to 1.8 percent. 

Research roundup: Octadecanol/expanded perlite; PV/T system design; macroencapsulated PCM for pavement; more

Ben Welter - Friday, August 10, 2018

From Renewable Energy:

Experimental investigation on thermal properties and thermal performance enhancement of octadecanol/expanded perlite form stable phase change materials for efficient thermal energy storage
Effect of graphite mass concentrations in a mixture of graphite nanoparticles and paraffin wax as hybrid storage materials on performances of solar still

From Renewable and Sustainable Energy Reviews:

A review on recent development for the design and packaging of hybrid photovoltaic/thermal (PV/T) solar systems

From Materials:

Mechanical and Thermal Performance of Macro-Encapsulated Phase Change Materials for Pavement Application

From International Journal of Heat and Mass Transfer:

Heat transfer behavior of elemental sulfur for low temperature thermal energy storage applications
A novel method for determining the melting point, fusion latent heat, specific heat capacity and thermal conductivity of phase change materials
Effect of microstructure on melting in metal-foam/paraffin composite phase change materials

From Chemical Engineering Journal:

Flexible phase change materials for thermal storage and temperature control

From Construction and Building Materials:

Experimental investigation of thermal and mechanical properties of magnesium oxychloride cement with form-stable phase change material

From Solar Energy:

New insights into the corrosion mechanism between molten nitrate salts and ceramic materials for packed bed thermocline systems: A case study for steel slag and solar salt


Research roundup: Solar thermal modeling; finned multitube storage; solid-solid PCM: more

Ben Welter - Wednesday, August 01, 2018

From Applied Thermal Engineering:

Modelling and experimental study of latent heat thermal energy storage with encapsulated PCMs for solar thermal applications

From Journal of Energy Storage:

Estimation of thermal performance and design optimization of finned multitube latent heat thermal energy storage

From Engineering Science and Technology:

Experimental study on heat transfer performance of neopentyl glycol/CuO composite solid-solid PCM in TES based heat sink

From Solar Energy:

Synthesis and characterization of stearic acid/silicon dioxide nanoencapsules for solar energy storage