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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: Sodium acetate trihydrate; palm kernel vegetable fat; spiral-fin heat exchanger; gas flow through bed of granular PCM; more

Ben Welter - Tuesday, November 06, 2018

From Energy:

Preparation and thermal properties of sodium acetate trihydrate as a novel phase change material for energy storage

From Journal of Building Engineering:

The Palm Kernel Vegetable Fat: a Low-cost Bio-based Phase Change Material for Thermal Energy Storage in Buildings

From International Journal of Applied Engineering Research:

Carbonaceous Phase Change Nanocomposites: A low cost energy storage approach [pdf]

From Applied Mathematical Modelling:

Investigation of Phase Change in a Spiral-Fin Heat Exchanger

From Applied Energy:

Numerical investigation of the thermal performance enhancement of latent heat thermal energy storage using longitudinal rectangular fins and flat micro-heat pipe arrays

From Materials Science and Engineering:

The characteristics of temperature fluctuations in thermal insulation covered with layer of PCM [pdf]

From Applied Thermal Engineering:

Thermal properties and applications of microencapsulated PCM for thermal energy storage: A review

From International Journal of Heat and Mass Transfer:

Evaluation and optimization of thermal performance for a finned double tube latent heat thermal energy storage
Influence of gas compressibility on gas flow through bed of granular phase change material

From Journal of Energy Storage:

From International Journal of Refrigeration:

Investigating organic phase change behavior with thermal photography

Research roundup: Form-stable stearic acid PCM; spent diatomite from palm oil bleaching process; anisotrophic graphene aerogels; more

Ben Welter - Tuesday, October 30, 2018

From Journal of Thermal Analysis and Calorimetry:

Preparation and characterization of novel form stable phase change materials based on stearic acid

From Construction and Building Materials:

Thermal performance enhancement of organic phase change materials using spent diatomite from the palm oil bleaching process as support

From Journal of Facade Design and Engineering:

Modelling Envelope Components Integrating Phase Change Materials (PCMs) with Whole-Building Energy Simulation Tools: A State of the Art [pdf]

From Renewable Energy:

Two side serpentine flow based photovoltaic-thermal-phase change materials (PVT-PCM) system: Energy, exergy and economic analysis

From Advanced Functional Materials:

Thermally Conductive Phase Change Composites Featuring Anisotropic Graphene Aerogels for Real‐Time and Fast‐Charging Solar‐Thermal Energy Conversion

From Indoor and Built Environment:

The year-round thermal performance of a new ventilated Trombe wall integrated with phase change materials in the hot summer and cold winter region of China

From Energy:

Solar thermal energy storage based on sodium acetate trihydrate phase change hydrogels with excellent light-to-thermal conversion performance

From Advances in Material Science and Engineering:

Shape Stability of Polyethylene Glycol/Acetylene Black Phase Change Composites for Latent Heat Storage [pdf]

From Solar Energy:

Energy performance comparison of concentrated photovoltaic – Phase change material thermal (CPV-PCM/T) system with flat plate collector (FPC)

From Cogent Engineering:

Evaluation of a concrete-graphite hybrid mixture for low-cost thermal energy storage material

Patent application: Thermal energy storage systems

Ben Welter - Monday, October 29, 2018

PCES TES patent drawing

U.S. patent application 20180283800 (applicant Phase Change Energy Solutions Inc., Asheboro, N.C.):

"In one aspect, thermal energy storage systems are described herein. In some embodiments, a thermal energy storage system comprises a thermal energy storage system comprising a container and a heat exchange apparatus disposed within the container. The heat exchange apparatus comprises a tank, a manifold at least partially disposed within the tank, and a phase change material disposed within the tank and in thermal contact with the manifold."

http://www.freepatentsonline.com/20180283800.pdf

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

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

Research roundup: Myristic acid with ethyl cellulose shell; phase-change acoustic heat engine; hybrid personal cooling system; more

Ben Welter - Tuesday, September 25, 2018

From Applied Energy:

Microencapsulation and thermal properties of myristic acid with ethyl cellulose shell for thermal energy storage
Fast and experimentally validated model of a latent thermal energy storage device for system level simulations
Numerical simulation and experimental validation of the solar photovoltaic/thermal system with phase change material
Low-temperature energy conversion using a phase-change acoustic heat engine

From Journal of Energy Storage:

Exploring additives for improving the reliability of zinc nitrate hexahydrate as a phase change material (PCM)

From Energy:

Laboratory assessment of residential building walls containing pipe-encapsulated phase change materials for thermal management
Review on thermal performances and applications of thermal energy storage systems with inorganic phase change materials

From Nano Energy:

Nanoconfinement effects on thermal properties of nanoporous shape-stabilized composite PCMs: A review

From International Journal of Thermal Sciences:

Study of heat and fluid flow during melting of PCM inside vertical cylindrical tube

From Building and Environment:

A new hybrid personal cooling system (HPCS) incorporating insulation pads for thermal comfort management: Experimental validation and parametric study

From International Journal of Heat and Mass Transfer:

An analytical technique for the optimal designs of tube-in-tank thermal energy storage systems using PCM

From 2nd International conference on Advances in Mechanical Engineering:

Study of freezing characteristics of water based grapheme Nano-fluid PCM in a spherical capsule [pdf]
Enhancement of thermal conductivity of PCM using filler graphite powder materials [pdf]

From 10th International Conference on Applied Energy:

A Numerical Investigation into the Heat Transfer and Melting Process of Lauric Acid in a Rectangular Enclosure with Three Values of Wall Heat Flux

Research roundup: Concrete with shape-stable PCM; carbon nanotube laden with D-Mannitol; inorganic PCMs in metal capsules

Ben Welter - Thursday, September 20, 2018

From MATEC Web of Conferences:

Thermal Properties of Concrete Incorporated with Shape-stable Phase Change Material [pdf]

From Advanced Powder Technology:

Multi-walled carbon nanotube laden with D-Mannitol as phase change material: Characterization and experimental investigation

From Advances in Polymer Technology:

The influence of emulsifiers on preparation and properties of microencapsules of melamine–urea–formaldehyde resins with n‐dodecanol as phase change material

From Materials:

Macro-Encapsulation of Inorganic Phase-Change Materials (PCM) in Metal Capsules

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