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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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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

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:

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

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