Phase Change Matters RSS

 

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.

RECENT POSTS

TAGS

ARCHIVE

Patent application: Enhanced dry-cooling system for increasing power plant efficiency

Ben Welter - Thursday, August 31, 2017

U.S. patent application 20170248035 (applicant University of Cincinnati, Cincinnati, Ohio):

"The presently disclosed subject matter relates to enhanced dry-cooling systems and methods. More specifically, the presently disclosed subject matter relates to enhanced dry-cooling systems for increasing power plant efficiency and output. One embodiment of the present disclosure is directed to dry-cooling system for increasing power plant efficiency and output. The dry-cooling system comprises an air-cooled condenser and an air cooling system in fluid communication with the air-cooled condenser. ... In certain embodiments, the thermal energy storage material 28 is a liquid to solid phase change thermal storage material"

http://www.freepatentsonline.com/20170248035.pdf

Patent application: Heat exchanger and storage device

Ben Welter - Thursday, August 31, 2017

U.S. patent application 20170248375 (assignee BorgWarner Inc., Auburn Hills, Mich.):

"A product with a heat generating system, the product having a heat storage medium constructed and arranged to receive and store heat from the heat generating system wherein the product is constructed and arranged to trigger, extract, and use the stored heat, the heat storage medium receiving heat from the heat generating system during which heat storage in the heat storage medium increases at a first rate to a point where a phase change of the heat storage medium occurs and increases at a second rate during the phase change of the energy storage medium at a phase change temperature, the second rate being substantially higher than the first rate and wherein the extraction and use of heat by the product is triggered by a generator at a temperature that is lower than the phase change temperature."

http://www.freepatentsonline.com/20170248375.pdf

Patent application: Refrigeration, or thermal, energy storage system

Ben Welter - Thursday, August 31, 2017

Refrigeration TES system patent drawing

U.S. patent application 20170248377 (applicants Upgrading Services SPA and Labor SRL, Italy):

"A refrigeration, or thermal, energy storage system for storing refrigeration, or thermal, energy, comprising a body, closed and insulated, the body being configured to contain two fluids, respectively a Phase Change Material (PCM) type fluid and a secondary fluid, the two fluids being immiscible with each other and having different densities, so as to be stratified within the volume of the body; withdrawal means configured to draw the secondary fluid from the body, and to convey the same inside a heat exchanger configured to exchange frigories, or calories, with the secondary fluid; and distribution means configured to draw the secondary fluid from the heat exchanger, and distribute the secondary fluid into the PCM type fluid, so that the secondary fluid exchanges with the PCM type fluid frigories, or calories, absorbed in the heat exchanger, the secondary fluid having a solidification temperature substantially lower than that of the PCM type fluid."

http://www.freepatentsonline.com/20170248377.pdf

Research roundup: Flexible PCMs with high thermal conductivity; treatment for exercise-induced muscle damage; more

Ben Welter - Thursday, August 31, 2017

Thermal sensitive flexible phase change materials with high thermal conductivity for thermal energy storage [Energy Conversion and Management]

The efficacy of cooling with phase change material for the treatment of exercise-induced muscle damage: pilot study [Journal of Sports Sciences]

Form-stable phase change material based on Na2CO3·10H2O-Na2HPO4·12H2O eutectic hydrated salt/expanded graphite oxide composite: The influence of chemical structures of expanded graphite oxide [Renewable Energy]

Structure and Thermal Performances of Paraffin/Diatomite Form-stable Phase Change Materials [Chinese Journal of Materials Research]

Patent application: Gel comprising PCM and gelling agent

Ben Welter - Thursday, August 31, 2017

U.S. patent application 20170247593 (Cold Chain Technologies Inc., Franklin, Mass.):

CCT patent application photo"Gel including a phase-change material and a gelling agent. In one embodiment, the phase-change material may be n-tetradecane, n-hexadecane or mixtures thereof. The gelling agent may be a high molecular weight styrene-ethylene-butylene-styrene (SEBS) triblock copolymer with a styrene:rubber ratio of about 30:70 to 33:67% by weight. To form the gel, the phase-change material and the gelling agent may be mixed at an elevated temperature relative to room temperature to partially, but not completely, dissolve the gelling agent. The mixture may then be cooled to room temperature. Alternatively, the phase-change material and the gelling agent may be mixed at room temperature, and the mixture may then be heated to form a viscoelastic liquid, which is then cooled to room temperature. The invention is also directed at a method of preparing the gel, a thermal exchange implement including the gel, and a method of preparing the thermal exchange implement."

http://www.freepatentsonline.com/20170247593.pdf

Research roundup: Carbonized rice; erythritol-xylitol; integrated double skin façade; paraffin-based TES system; more

Ben Welter - Wednesday, August 30, 2017

Form stable composite phase change materials from palmitic-lauric acid eutectic mixture and carbonized abandoned rice: preparation, characterization, and thermal conductivity enhancement [Energy and Buildings]

Mitigation against Crude Oil Wax Solidification using TES Fin [Chemical Engineering Research and Design]

Heat transfer analysis of an integrated double skin façade and phase change material blind system [Building and Environment]

Experimental Phase Diagram Study of the Binary Polyols System Erythritol-Xylitol [Solar Energy Materials and Solar Cells]

Study of Various Aspects of Phase Change Material During Solidification and Melting: A Review [pdf] [International Journal of Scientific Research in Science and Technology]

Development in Paraffin Based Thermal Storage System Through Shell and Tubes Heat Exchanger With Vertical Fins [ASME 2017 11th International Conference on Energy Sustainability]

Patent application: Heated packs with phase change material

Ben Welter - Monday, August 28, 2017

Heated packs patent application drawingU.S. patent application 20170239081 (applicant Schawbel Technologies LLC, Burlington, Mass.):

"The present invention provides heated packs with improved functionality and battery retention. Those features are achieved by the inclusion of an intelligent circuit, incorporation of a phase-changing material, or both. The intelligent circuit includes a feedback loop that adjusts the temperature (and thus demand on the battery) based on user commands or temperature sensors." 

http://www.freepatentsonline.com/20170239081.pdf

Patent application: Cellulosic fibers with enhanced reversible thermal properties

Ben Welter - Monday, August 28, 2017

U.S. patent application 20170241045 (applicant Outlast Technologies LLC, Golden, Colo.):

"A cellulosic fiber includes a fiber body including a cellulosic material and non-encapsulated phase change material dispersed within the cellulosic material. The non-encapsulated phase change material forms a plurality of distinct domains dispersed within the cellulosic material. The non-encapsulated phase change material has a latent heat of at least 40 Joules per gram and the cellulosic fiber has a latent heat between 9.8 Joules per gram and 132 Joules per gram and a transition temperature in the range of 0° C. to 100° C., and cellulosic fiber provides thermal regulation based on at least one of absorption and release of the latent heat at the transition temperature."

http://www.freepatentsonline.com/20170241045.pdf

PCM briefing: Inventory reset rule takes effect; va-Q-tec reports strong first half

Ben Welter - Monday, August 28, 2017

• Thermal energy storage, a proven technology for years in Europe, is now a "budding HVAC option" in the United States, ACHR News reports. “In many ways, applications haven’t changed,” said Steve Benz, a 35-year veteran of the thermal storage industry and Evapco’s director of global thermal storage and district energy. “What has changed is related to the electric market — with an emphasis today on sustainable energy production and electricity storage."

Jane Chen• In an appearance at Stanford School of Engineering, Embrace founder Jane Chen, right, talked about the challenges she faced in developing and expanding the use of the PCM-based infant warming blanket. "You will inevitably fail," she said, "and you need to have the courage and the persistence to get back out there, learn from your mistakes, and try again."

• The U.S. Environmental Protection Agency has published the final TSCA inventory reset rule. The rule, which is effective immediately, creates new reporting obligations for companies that manufacture or import chemical products.

Va-Q-tec AG is reporting a strong first half of the year, with revenue 44 percent higher than the same period last year. The company, based in Würzburg, Germany, develops, manufactures and sells vacuum insulation panels and phase change materials. 

• Monday, Aug. 28, is the deadline for submitting entries in Bio-Based World News' bio-based innovation competition for the Americas. The two categories are product of the year and chemical innovation of the year. The awards will be presented at the Bio-Based Live conference in San Diego Sept. 25-26. 

Singapore's "Grid 2.0" may include district cooling systems that incorporate phase change materials. 

Sonoco ThermoSafe has an opening for product manager in Arlington Heights, Ill. 

• New from Market Research Future: "Global Thermal Energy Storage Market Research Report - Forecast to 2022"

SaltX Technology of Sweden and Xinjiang Goldwind Science & Technology Co. Ltd of China have reached an agreement to jointly develop and commercialize a "groundbreaking solution" for wind power with integrated energy storage.  

Ember secures $13 million to accelerate R&D, marketing initiatives

Ben Welter - Monday, August 28, 2017

Ember Technologies, maker of the Ember temperature-controlled coffee mug, has secured $13 million in Series C funding.

The close of this round brings Ember’s total funding to $21 million. Investors to date include Scott Cutler, CEO of StubHub, singer-songwriter Demi Lovato and National Football League star Ndamukong Suh. 

The $150 Ember mug uses phase change material and a microprocessor-controlled heating system to maintain hot beverages at temperatures set by the user. Ember plans to introduce "several new temperature-control products" in the next six to nine months. The additional capital will be used to accelerate R&D and marketing initiatives.

http://www.finsmes.com/2017/08/ember-technologies-raises-13m-in-series-c-funding.html