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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: Solar fish dryer; oscillating heat pipe; small-scale refrigeration system; more

Ben Welter - Monday, October 22, 2018

From Applied Thermal Engineering:

Experiments on comparative performance of water thermocline storage tank with and without encapsulated paraffin wax packed bed
Experimental study and performance prediction of the PCM-antifreeze solar thermal system under cold weather conditions
Improving System Performance of a Personal Conditioning System integrated with Thermal Storage

From Energy:

A methodological concept for phase change material selection based on multi-criteria decision making (MCDM): A case study

From Journal of Energy Storage:

Experimental analysis of solar fish dryer using phase change material

From International Journal of Heat and Mass Transfer:

Experimental investigation on thermal performance of phase change material coupled with three-dimensional oscillating heat pipe (PCM/3D-OHP) for thermal management application

From Sustainable Cities and Society:

Experimental investigation on melting and solidification behaviour of erythritol in a vertical double spiral coil thermal energy storage system

From Journal of Thermal Analysis and Calorimetry:

Investigation of energy and exergy performance on a small-scale refrigeration system with PCMs inserted between coil and wall of the evaporator cabin

From Journal of Applied Physics:

Optimizing the design of composite phase change materials for high thermal power density

From Energy Procedia:

The technical and economic feasibility of utilizing phase change materials for thermal storage in district heating networks

PCM briefing: Traction battery for electric vehicles; Ember mug available in Apple stores

Ben Welter - Friday, October 19, 2018

• The Fraunhofer Institute for Structural Durability and System Reliability in Darmstadt, Germany, has developed a traction battery that can use thermal energy as a heat source in electric vehicles. A new type of fiber-reinforced composite sandwich housing protects the battery from temperature fluctuations. The phase change material composite system is designed to precondition the battery at low outside temperatures and reduce heat generation during rapid charging. The system was developed as part of the European Union's Optimized Energy Management and Use project. "We've developed material, structural and process technologies that can guarantee drivers a more reliable and uniform range for their battery-powered vehicles," said Felix Weidmann, project manager at Fraunhofer LBF.

Airec AB of Sweden has joined the EU Horizon 2020 project SWS-Heating. The project's goal is to develop seasonal thermal storage of solar energy. The energy will be stored in phase change materials. Airec will develop heat exchangers for the project. 

A process for extracting a biodegradable polymer from crustaceans is among the winners of this year's Green Chemistry Challenge Awards. The awards were formerly known as the Presidential Green Chemistry Challenge Awards. The American Chemical Society’s Green Chemistry Institute has collaborated with the U.S. Environmental Protection Agency to manage the awards since their inception in 1995. The EPA dropped out this year, citing long-term certainty about the program’s financial situation.  

Ember temperature-control tumblerEmber Technologies' temperature-control mugs are now available in Apple stores and on apple.com. The travel version right, uses phase change material to bring hot beverages down to a drinkable temperature. Earlier this year, Nordstrom began selling the mugs online and in Nordstrom popup stores.

Capstone Turbine Corp. and Argonne National Laboratory have received funding from U.S. Department of Energy to refine Argonne’s high-efficiency, fast-charging and fast-discharging thermal energy storage system for use in combined heat and power systems. The system, originally developed for use in concentrated solar power applications, will use phase change material to capture waste heat from industrial manufacturing processes. The goal is to integrate Argonne's technology into a Capstone C200 CHP system.

• New from Persistence Market Research"Global Market Study on Salt Hydrate: Pharmaceutical Industry to Remain Dominant Consumer Through 2026"

• New from QY Research: "Global Thermal Energy Storage Market Size, Status And Forecast 2025"

• New from Maia Research: "Inorganic PCMs Market Analysis, Market Size, Application, Analysis, Regional Outlook, Competitive Strategies And Forecasts, 2018 -2025"

• At the World Energy Engineering Congress in Charlotte, N.C., this week, Mark Richards of Phase Change Energy Solutions reports that the company demonstrated "a mini PhaseStor tank in action with 1/2 ton chiller and small heater (system hand made by Scott Queen) to charge and discharge the tank and includes on board DAQ system to show tank thermal performance." Richards presented at a panel discussion Friday, "Justifying HVAC Energy Savings in Buildings Using Phase Change Materials - A Debate with a Skeptical Engineer." Also presenting were Guy Frankenfield, energy division manager at DN Tanks Inc. ("Thermal Energy Storage - Uncovering the Value of Ice and Chilled Water TES Systems") and Ice Energy CEO Mike Hopkins ("Thermal Energy Storage in Package Units? Yes, it is Here").

Research roundup: Crude glycerol polyurethane composite foams; heat transfer analysis; Kalina cycle; more

Ben Welter - Wednesday, October 10, 2018

From Materials:

Thermal Energy Storage and Mechanical Performance of Crude Glycerol Polyurethane Composite Foams Containing Phase Change Materials and Expandable Graphite

From International Journal of Energy Research:

Review on heat transfer analysis in thermal energy storage using latent heat storage systems and phase change materials

From International Journal of Heat and Mass Transfer:

Recent developments in phase change materials for energy storage applications: A review

From Energy Conversion and Management:

Integrated power generation cycle (Kalina cycle) with auxiliary heater and PCM energy storage

From Minerals:

Mullite Stabilized Palmitic Acid as Phase Change Materials for Thermal Energy Storage

From Applied Thermal Engineering:

Microencapsulated phase change material (MEPCM) saturated in metal foam as an efficient hybrid PCM for passive thermal management: A numerical and experimental study
Inverse method to estimate air flow rate during free cooling using PCM-air heat exchanger

Patent application: Thermal interface composite material

Ben Welter - Friday, September 28, 2018

U.S. patent application 20180277910 (applicant Regents of the University of California, Oakland, Calif.):

"A composite thermal interface material and methods are shown. Devices such as lithium ion batteries incorporating composite thermal interface materials show significant improvement in cooling performance. In one example, composite thermal interface materials shown provide cooling through both a phase change mechanism, and a heat conducting mechanism which directs heat away from the device to be cooled, such as electrochemical cells in a battery, to an external housing and/or a coupled heat exchange device such as radiating fins."

http://www.freepatentsonline.com/20180277910.pdf

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

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

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:

Research roundup: Alum/expanded graphite composite; geopolymeric mortars; flexible PCMs; more

Ben Welter - Monday, July 30, 2018

From Energy:

Experimental investigations of Alum/expanded graphite composite phase change material for thermal energy storage and its compatibility with metals

From International Journal of Thermal Sciences:

Numerical study on the effect of phase change materials on heat transfer in asphalt concrete

From The Open Construction & Building Technology Journal:

Thermal Performance of Resource-Efficient Geopolymeric Mortars Containing Phase Change Materials

From Chemical Engineering Journal:

Flexible Phase Change Materials for Thermal Storage and Temperature Control

From Journal of Materials Chemistry A:

Nanoconfinement of phase change materials within carbon aerogels: phase transition behaviours and photo-to-thermal energy storage

From Materiales de Construcción:

Identification of best available thermal energy storage compounds for low-to-moderate temperature storage applications in buildings

Research roundup: Silicon carbide for battery thermal management; Stefan moving boundary models; alkali nitrate/nitrite salts; more

Ben Welter - Tuesday, July 24, 2018

From Renewable Energy:

Using Renewables Coupled with Thermal Energy Storage to Reduce Natural Gas Consumption in Higher Temperature Commercial/Industrial Applications

From Solar Energy:

Development of a solar thermal storage cum cooking device using salt hydrate

From Applied Energy:

One-step fabrication of fatty acids/nano copper/polyester shape-stable composite phase change material for thermal energy management and storage
Palmitic acid/polyvinyl butyral/expanded graphite composites as form-stable phase change materials for solar thermal energy storage

From Chinese Journal of Chemical Engineering:

Preparation and phase change performance of Na2HPO4·12H2O@poly(lactic acid) capsules for thermal energy storage

From Applied Thermal Engineering:

Thermal performance of sodium acetate trihydrate based composite phase change material for thermal energy storage
Performance improvement and energy consumption reduction in refrigeration systems using phase change material (PCM)
A thermal conductive composite phase change material with enhanced volume resistivity by introducing silicon carbide for battery thermal management
Numerical and Experimental study on the performance of a new two -layered high-temperature packed-bed thermal energy storage system with changed-diameter macro-encapsulation capsule

From Colloids and Surfaces A: Physicochemical and Engineering Aspects:

Green Nano-encapsulation Technique for Preparation of Phase Change Nanofibers Mats with Core-Sheath Structure
From International Journal of Thermal Sciences:

Analytical and numerical analysis of PCM solidification inside a rectangular finned container with time-dependent boundary condition

From Construction and Building Materials:

Elaboration and properties of a composite bio-based PCM for an application in building envelopes

From International Journal of Heat and Mass Transfer:

Lorentz forces effect on NEPCM heat transfer during solidification in a porous energy storage system
A translucent honeycomb solar collector and thermal storage module for building façades