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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: Hollow aluminum bricks; animal-fat-based PCM for building applications; floor heating system design; more

Ben Welter - Wednesday, March 27, 2019

From Applied Thermal Engineering:

Thermal characteristics of aluminium hollowed bricks filled with phase change materials: Experimental and numerical analyses

From Energies:

Assessing the Potentiality of Animal Fat Based-Bio Phase Change Materials (PCM) for Building Applications: An Innovative Multipurpose Thermal Investigation

From Sustainable Energy and Fuels:

Innovative design of microencapsulated phase change materials for thermal energy storage and versatile applications: A review

From Environmental Research:

Design and analysis of phase change material based floor heating system for thermal energy storage

From Solar Energy Materials and Solar Cells:

Direct impregnation and characterization of Colemanite/Ulexite-Mg (OH) 2 paraffin based form-stable phase change composites
Experimental analysis of solar air collector with PCM-honeycomb combination under the natural convection

From Journal of Molecular Liquids:

Fabrication and characterization of phase change nanofluid with high thermophysical properties for thermal energy storage

From Renewable Energy:

Investigation of thermal properties and enhanced energy storage/release performance of silica fume/myristic acid composite doped with carbon nanotubes

From International Journal of Thermal Physics:

Thermal Property Characterization of a Low Supercooling Degree Binary Mixed Molten Salt for Thermal Energy Storage System

From Journal of Energy Storage:

From Energy Procedia:

Development of Corn-Oil Ester and Water Mixture Phase Change Materials for Food Refrigeration Applications
Experimental study on the performance of a new encapsulation panel for PCM's to be used in the PCM-Air heat exchanger

From Case Studies in Thermal Engineering:

Thermal characteristics on melting/solidification of low temperature PCM balls packed bed with air charging/discharging

Research roundup: Poly (methyl methacrylate) shell; calcium carbonate shell; macroscopic composite cement mortars; more

Ben Welter - Tuesday, March 19, 2019

From Energy Procedia:

Development of microencapsulated phase change material with poly (methyl methacrylate) shell for thermal energy storage
Supercooling study of erythritol/EG composite phase change materials
Thermal performance of pouch Lithium-ion battery module cooled by phase change materials
Active cooling based battery thermal management using composite phase change materials
Investigation on Thermal Performance of an Integrated Phase Change Material Blind System for Double Skin Facade Buildings
Experimental study on preparation of a novel foamed cement with paraffin/ expanded graphite composite phase change thermal energy storage material

From Colloids and Surfaces A: Physicochemical and Engineering Aspects:

Synthesis and performance evaluation of paraffin microcapsules with calcium carbonate shell modulated by different anionic surfactants for thermal energy storage

From Journal of Materials Chemistry A:

A novel shape-stabilization strategy for phase change thermal energy storage

From Journal of Molecular Liquids:

Melting of phase change materials in a trapezoidal cavity: Orientation and nanoparticles effects

From Energy and Buildings:

Development of new nano-enhanced phase change materials (NEPCM) to improve energy efficiency in buildings: lab-scale characterization

From Applied Sciences:

Efficient Characterization of Macroscopic Composite Cement Mortars with Various Contents of Phase Change Material

From Solar Energy:

Modelling and performance analysis of a new concept of integral collector storage (ICS) with phase change material

Research roundup: Radiant floor heating system; mitigation of supercooling; hot water stratification; more

Ben Welter - Friday, March 08, 2019

From Energies:

Analysis of Thermal Performance and Energy Saving Potential by PCM Radiant Floor Heating System based on Wet Construction Method and Hot Water

From Applied Energy:

Supercooling of phase-change materials and the techniques used to mitigate the phenomenon

From Polymer Chemistry:

Encapsulating an organic phase change material within emulsion-templated poly(urethane urea)s

From AIP Advances:

Thermal expansion effects on the one-dimensional liquid-solid phase transition in high temperature phase change materials

From Journal of Materials Chemistry A:

A thermal energy storage composite with sensing function and its thermal conductivity and thermal effusivity enhancement

From Materials Science and Engineering:

Experimental Measurements of Hot Water Stratification in a Heat Storage Tank

From Thermochimica Acta:

Modification of physical and thermal characteristics of stearic acid as a phase change materials using TiO2-nanoparticles

From Energy and Buildings:

Thermal and Structural Performance of Geopolymer Concrete Containing Phase Change Material Encapsulated in Expanded Clay
An experimental study on applying organic PCMs to gypsum-cement board for improving thermal performance of buildings in different climates

From International Journal of Biological Macromolecules:

Sodium alginate/feather keratin-g-allyloxy polyethylene glycol composite phase change fiber

From Construction and Building Materials:

Thermal properties of lightweight concrete incorporating high contents of phase change materials

From Progress in Organic Coatings:

Fabrication and characterization of microencapsulated n-heptadecane with graphene/starch composite shell for thermal energy storage

From Sustainable Energy and Fuels:

A thermal energy storage prototype using sodium magnesium hydride

From Thermal Science and Engineering Progress:

Experimental investigation of the thermal performance of a helical coil latent heat thermal energy storage for solar energy applications

From International Journal of Sports Physiology and Performance:

Exploring the Efficacy of a Safe Cryotherapy Alternative: Physiological Temperature Changes from Cold Water Immersion vs Prolonged Phase Change Material Cooling

From Applied Sciences:

A Form Stable Composite Phase Change Material for Thermal Energy Storage Applications over 700° C

Patent application: Aliphatic materials in heating and cooling applications

Ben Welter - Wednesday, February 06, 2019

U.S. patent application 20190033009 (applicant Elevance Renewable Sciences Inc., Woodridge, Ill.):

"Aliphatic materials and their use in passive heating and cooling applications are generally disclosed. In some embodiments, dibasic acids and esters (diesters) thereof and their use in passive heating and cooling applications are disclosed. In some embodiments, C18 dibasic acids and esters thereof are disclosed, including their use in passive heating and cooling applications. In some embodiments, various olefins, including alkenes and olefinic acids and esters, are disclosed, including their use in passive heating and cooling applications."

http://www.freepatentsonline.com/20190033009.pdf

Research roundup: Thermal conductivity; decarbonization potential of compact heat storage; liquid desiccant cooling systems; more

Ben Welter - Wednesday, February 06, 2019

From Energy:

Effects of thermal conductivity and density on phase change materials-based thermal energy storage systems

From Renewable Energy:

Melting process investigation of phase change materials in a shell and tube heat exchanger enhanced with heat pipe

From Applied Thermal Engineering:

Compact latent heat storage decarbonisation potential for domestic hot water and space heating applications in the UK
Numerical and experimental study of phase-change temperature controller containing graded cellular material fabricated by additive manufacturing
A novel composite phase change material with paraffin wax in tailings porous ceramics
Characterisation and evaluation of a new phase change enhanced working solution for liquid desiccant cooling systems
Thermal properties enhancement and application of a novel sodium acetate trihydrate-formamide/expanded graphite shape-stabilized composite phase change material for electric radiant floor heating

From Environmental Research:

Latent heat storage biocomposites of phase change material-biochar as feasible eco-friendly building materials

From Colloids and Surfaces A:

A facile microencapsulation of phase change materials within silicone-based shells by using glass capillary devices

From Microporous and Mesoporous Materials:

Phase change in modified metal organic frameworks MIL-101(Cr): Mechanism on highly improved energy storage performance

From Applied Energy:

Role of porous metal foam on the heat transfer enhancement for a thermal energy storage tube
Energy saving performance assessment and lessons learned from the operation of an active phase change materials system in a multi-storey building in Melbourne

From Building and Environment:

Comparative analysis of the PCM application according to the building type as retrofit system

From Construction and Building Materials:

Evaluation of the potential use of form-stable phase change materials to improve the freeze-thaw resistance of concrete

From Results in Physics:

Application Research of Nano-storage Materials in Cold Chain Logistics of E-commerce Fresh Agricultural Products

From Journal of Energy Storage:

Using PCM as energy storage material in water tanks: Theoretical and experimental investigation

Research roundup: Hydrophobic lauric acid; paraffin in heat exchanger; EnergyPlus vs. IES; more

Ben Welter - Thursday, January 10, 2019

From Journal of Energy Storage:

Preparation of hydrophobic lauric acid/SiO2 shape-stabilized phase change materials for thermal energy storage

From Applied Thermal Engineering:

Development of paraffin wax as phase change material based latent heat storage in heat exchanger

From Renewable Energy:

Characterization and stability study of a form-stable erythritol/expanded graphite composite phase change material for thermal energy storage

From Journal of Building Engineering:

Comparison of EnergyPlus and IES to model a complex university building using three scenarios: Free-floating, ideal air load system, and detailed

From 4th International Conference on Renewable Energies for Developing Countries :

Phase Change Materials in a Domestic Solar Hot Water Storage Tank of the Lebanese Market
Numerical and experimental investigations of a PCM integrated solar chimney
Integrating a High Solar Combi-Plus System using PCM Storage in a Smart Network: KSA Case Study

From International Journal of Advanced Research In Applied Sciences, Engineering and Technology:

Solar Cooker with Heat Storage System: A Review [pdf]

From Energy and Buildings:


From Solar Energy Materials and Solar Cells:

Bio-based poly (lactic acid)/high-density polyethylene blends as shape-stabilized phase change material for thermal energy storage applications

From Construction and Building Materials:

Microstructure-guided numerical simulation to evaluate the influence of phase change materials (PCMs) on the freeze-thaw response of concrete pavements

From Energy Conversion and Management:

Thermal management of Li-ion battery pack with the application of flexible form-stable composite phase change materials
Experimental investigation on cylindrically macro-encapsulated latent heat storage for space heating applications

From International Communications in Heat and Mass Transfer:

Experimental investigation on using a novel phase change material (PCM) in micro structure photovoltaic cooling system
Experimental investigation on a novel composite heat pipe with phase change materials coated on the adiabatic section

From Journal of Cleaner Production:

Research roundup: Synthesis of n-butyl palmitate; graphite as heat-transfer enhancer in high-temperature inorganic PCM; more

Ben Welter - Thursday, October 25, 2018

From Journal of Thermal Analysis and Calorimetry:

Synthesis and characterization of the n-butyl palmitate as an organic phase change material

From Renewable Energy:

Encapsulation of high-temperature inorganic phase change materials using graphite as heat transfer enhancer

From Synthesis, Technology and Applications of Carbon Nanomaterials:

Activated Carbon for Shape-Stabilized Phase Change Material

From Applied Energy:

Thermal conductivity enhancement of phase change materials with 3D porous diamond foam for thermal energy storage

From Energy and Technology Journal:

Enhancement of Thermal Storage Properties of Phase Change Material by Using Metallic Swarf [pdf]

From ACS Sustainable Chemistry & Engineering:

Fabrication and Characterization of Flame-Retardant Nanoencapsulated n-Octadecane with Melamine–Formaldehyde Shell for Thermal Energy Storage

From Energy Storage Materials:

Polyurethane-Based Flexible and Conductive Phase Change Composites for Energy Conversion and Storage

From Materials Today:

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

Patent application: Even carbon number paraffin composition

Ben Welter - Thursday, October 11, 2018

U.S. patent application 20180290946 (applicant REG Synthetic Fuels LLC, Ames, Iowa):

"Paraffin compositions including mainly even carbon number paraffins, and a method for manufacturing the same, is disclosed herein. In one embodiment, the method involves contacting naturally occurring fatty acid/glycerides with hydrogen in a slurry bubble column reactor containing bimetallic catalysts with equivalent particle diameters from about 10 to about 400 micron. The even carbon number compositions are particularly useful as phase change material."

http://www.freepatentsonline.com/20180290946.pdf