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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: 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


Patent application: Insulated chamber with PCM and door with controllable transparency

Ben Welter - Monday, August 06, 2018

Caron patent drawingU.S. patent application 20180216833 (applicant Caron Products and Services Inc., Marietta, Ga.):

"A hinged door for gaining access to a chamber interior region for receiving a storage item therein. The hinged door comprising a frame, a transparent material pane within the frame, a smart glass material disposed proximate the material pane and controllable between a transparent and opaque condition responsive to an electric current supplied to the smart glass material, a phase change material [72G] within the frame, and a temperature controlling device proximate the phase change material."

http://www.freepatentsonline.com/20180216833.pdf

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

PCM briefing: PureTemp blog is finalist for industry award; ACC urges Trump to remove all chemicals from tariffs list

Ben Welter - Friday, July 27, 2018

• The Phase Change Matters blog is a finalist in the 2018 PR News Platinum and Agency Elite Awards. Other finalists in the blog category include Shopfloor (National Association of Manufacturers), The Blonde Abroad (R&R Partners) and Transform (Microsoft Inc.). Winners will be announced at a luncheon in New York City on Sept. 21.

Phase Change Material Products Ltd. and Fraunhofer Institute for Solar Energy Systems ISE will be among the exhibitors at Chillventa 2018. The trade show for refrigeration, air conditioning, ventilation and heat pumps will be held Oct. 16-18 in Nuremberg, Germany. 

FLIR One Pro LTFlir Systems has released the One Pro LT thermal image camera for the iPhone. The new model has many of the core features of the popular One Pro model but at a lower price: $299.

Ed Brzytwa, the American Chemistry Council's director of international trade, has urged the Trump administration to remove all chemicals and plastics products, valued at $2.2 billion, from a list of Chinese goods subject to possible increased tariffs. In testimony before officials from the Office of the U.S. Trade Representative this week, Brzytwa said higher tariffs on those products “has the potential to harm America’s manufacturing renaissance and is counterproductive to U.S. economic interests.” 

• The program for the 13th Conference on Advanced Building Skins has been posted. The event will be held Oct. 1-2 in Bern, Switzerland. Last year's conference included at least 10 presentations on phase change material. "Phase change" appears just twice in this year's program. A presentation by Jose Manuel Montes Donaire of AKT II Envelopes, London, "Thermal tuning of envelopes and its use as a parametric design tool," will address the topic of energy buffering with phase change materials. A presentation by Annie Shaw of Manchester School of Art on the architectural potential of knitted textiles will explore "three-dimensional seamlessness and stretch, phase-change form-finding and form-fixing."

• Pillow talk: Phase change material is no longer enough. Manufacturers like Tulo and Blu Sleep are turning to titanium particles and essential oils in an effort to stand out it in the crowded pillow market.

Pelican BioThermal's newest temperature-control bulk shipper, the CoolPall Flex, is now available for purchase. The CoolPall Flex, unveiled in Milan in March, has a capacity range of 140 to 767 liters. Options include standard insulation or vacuum insulated panels and water-based or PCM coolants in single or double coolant configurations.

Sonoco ThermoSafe and United Cargo announced a global partnership agreement for the leasing of the PharmaPort 360 temperature-controlled bulk shipping container. The agreement enables pharmaceutical shippers to lease PharmaPort 360 containers directly from United Cargo.

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

Research roundup: Novel graphite-PCM composite sphere; sunlight-driven energy conversion; PCM-rich concrete overlay; more

Ben Welter - Tuesday, July 10, 2018

From Applied Thermal Engineering:

A Novel Graphite-PCM Composite Sphere With Enhanced Thermo-Physical Properties
Fatty acids based eutectic phase change system for thermal energy storage applications

From Applied Energy:

Mathematical modeling and sensitivity analysis of solar photovoltaic panel integrated with phase change material
Compact liquid cooling strategy with phase change materials for Li-ion batteries optimized using response surface methodology
Multi-parameter optimization design of thermoelectric harvester based on phase change material for space generation

From Solar Energy:

Experimental study on the performance of a novel solar water heating system with and without PCM
Latent thermal energy storage for solar process heat applications at medium-high temperatures – A review
Carbon based material included-shaped stabilized phase change materials for sunlight-driven energy conversion and storage: An extensive review

From Construction and Building Materials:

Application of a PCM-rich concrete overlay to control thermal induced curling stresses in concrete pavements

From Energy Conversion and Management:

Energy investigation of glazed windows containing Nano-PCM in different seasons
Transforming a passive house into a net-zero energy house: a case study in the Pacific Northwest of the U.S.

Research roundup: Humidity control material; solar water heaters; nanomaterials; flow-through wall elements; more

Ben Welter - Monday, July 09, 2018

From Energy and Buildings:

A Review on Enhancement of Phase Change Materials - A Nanomaterials Perspective
Phase change humidity control material and its impact on building energy consumption

From Solar Energy:

Optimization of melting and solidification processes of PCM: Application to integrated collector storage solar water heaters

From Applied Thermal Engineering:

Experimental Investigation on the Heat Transfer Enhancement in a Novel Latent Heat Thermal Storage Equipment
Recent advancements on thermal management and evaluation for data centers
Heat Transfer Characteristics of an Expanded Graphite/Paraffin PCM-Heat Exchanger used in an Instantaneous Heat Pump Water Heater

From Thermal Science and Engineering Progress:

Numerical simulation of the melting of a NePCM due to a heated thin plate with different positions in a square enclosure

From Journal of Building Engineering:

Numerical study of flow-through wall elements with phase–change materials

From Journal of Energy Storage:

Exploratory investigation of a new thermal energy storage system with different phase change materials having distinct melting temperatures

From Renewable Energy:

Optimization assessment of the energy performance of a BIPV/T-PCM system using Genetic Algorithms

From Sustainable Cities and Society:

Coupled cooling method and application of latent heat thermal energy storage combined with pre-cooling of envelope: Temperature control using phase-change chair

PCM briefing: New EU energy standard takes effect; new research on inorganic phase change material

Ben Welter - Monday, July 09, 2018

• The new version of the European Union's Energy Performance of Buildings Directive takes effect July 9. The directive is the EU's main legislative instrument designed to promote improved energy performance of buildings. Member states will have 20 months to transpose the new elements into national law.

• A proposal to use microencapsulated phase change material to help motor vehicles run smoothly in extreme cold has won the ClimateLaunchpad competition in Azerbaijan. A team of chemical engineering students from Baku Higher Oil School developed the concept. The team will represent Azerbaijan at the ClimateLaunchpad finals in Scotland Nov. 1-2, 2018.

• New from Research Reports: "2018 Global Inorganic PCMs Industry Report – History, Present and Future"

PCM briefing: Cash infusion for Ice Energy; ASHRAE's new energy audit standard now available

Ben Welter - Monday, July 02, 2018

Ice Energy, make of the Ice Bear and other ice-based energy storage systems, is getting an infusion of cash from a private equity manager. The California startup will receive $40 million from Argo Infrastructure Partners to finance the delivery of its residential and commercial thermal storage contracts.

• "Chemistry for the Non-Chemist," a four-part online course offered by Chemical Watch, promises "a solid introduction to chemistry." The cost: $450.  

ASHRAE Standard 211 is now available for download. The standard "establishes consistent practices for conducting and reporting energy audits for commercial buildings. The standard defines the procedures required to perform Energy Audit Levels 1, 2, and 3; provides a common scope of work for these audit levels for use by building owners and others; c. establishes consistent methodology and minimum rigor of analysis required; and establishes minimum reporting requirements for the results of energy audits." 

Purchase College of New York will get a free replacement for its aging central heating plant, thanks to a collaborative thermal energy storage project from the New York Power Authority and Brenmiller Energy. The R&D project will investigate sensible thermal energy storage as a way to increase the efficiency of a standard combined heat and power system. The new system could save State University of New York $100,000 a year.

Fifty-four academic papers were presented at PCM 2018, the 12th IIR International Conference on Phase Change Materials and Slurries for Refrigeration and Air Conditioning, held in Orford, Canada, last month. "Investigations on the stability of metallic cans for PCM macro-encapsulation," "Investigation of compatibility of organic and inorganic PCMs with the materials of containers" and "Life cycle assessment phase changes of materials, component and system concept" are among the papers posted on the International Institute of Refrigeration website. 

John Lerch, vice president of sales and marketing at thermal energy storage company Axiom Exergy, writes about "5 things utilities should consider for energy storage." 

Wilmar International said it has ceased sourcing from palm oil suppliers allegedly associated with Gama, a company that was accused by Greenpeace of causing deforestation in Indonesia. 

• The Roundtable on Sustainable Palm Oil and Canadian supply chain consultancy Ulula are collaborating to introduce a mobile phone app to report potential workers’ incidents and abuses on palm oil plantations.