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

PCM briefing: 2-day training school in Barcelona; Alexium to launch foam bedding, 'top of bed' products

Ben Welter - Friday, March 15, 2019

A training school on thermal energy storage material selection, optimization and characterization will be offered May 20-21 at the University of Barcelona. The university's Center for Design and Optimization of Processes and Materials is hosting the event. The fee is 230 euros. Lecturers include Camila Barreneche, Ana Inés Fernández, Mercè Segarra and Pablo Gamallo of the University of Barcelona; Luisa Cabeza and Alvaro de Gracia of the University of Lleida, Spain; and Yulong Ding of the University of Birmingham, United Kingdom.

Alexium International Group Ltd. was among the companies making presentations this week at the Gabelli & Company Specialty Chemicals Conference in New York City. Alexium, based in Greer, S.C., and Perth, Australia, makes flame-retardant and PCM-enhanced fabric treatments. Among its "cornerstone" initiatives is a plan to launch a new product line in early 2019, Alexicool FM, the application of the company's Alexicool technology to foam mattress and "top of bed" products.  

• Thermal materials specialist va-Q-tec reports that its annual revenue grew by 8 percent in 2018. The company, based in Würzburg, Germany, said sales from its products business, including vacuum insulation panels and phase change materials, increased by 12 percent to 20.1 million euros, up from 18 million euros in 2017. However, its earnings fell by 58 percent, to 3 million euros. It blamed earnings decrease on investment costs and a rise in sales from its lower-margin products business.

• Australian researchers are challenging the belief that 22° C (72° F) is the optimum temperature to maintain worker productivity. A team from Griffith University’s School of Engineering and Built Environment and Cities Research Institute performed an extensive review of research literature on the relation of moderate thermal environment to cognitive performance. "From the research point of view," the lead researcher, Fan Zhang, said in an interview with the Cooling Post, "there is no empirical evidence that this temperature [22ºC] should be maintained. In effect, it is inconsistent with the already-established comfort benchmarks such as ASHRAE 55-2017, which recommends a summer time thermal comfort zone of 23-26ºC. I would say 23-26 is a safe summer temperature set point range for western developed countries."

Need a PCM coating on that coat? Ohio company has a solution

Ben Welter - Friday, March 01, 2019

Therma-SprayMCMENT Inc., an Ohio company that makes a PCM spray designed for use by consumers, launched a new website last month, teamapini.com, to market the product.

"We have been working on the Team Apini Therma-Spray product for a couple of years to give consumers a way to apply PCM technology to the clothing, bedding or other textile products they may already own," said Monte Magill, the company's senior vice president for PCM technologies. The coating is designed to absorb and release thermal energy to enhance thermal comfort.

"It is a water-based formulation containing microencapsulated PCMs and a heat curable binder material to affix the microPCMs to the various textile substrates," said Magill, who has worked in the PCM industry since the mid-1990s. "We do the final packaging in house but have the microPCMs and the binder formulation contract manufactured."

Therma-Spray-treated socks are also available on the site. The company has been selling Infinite R PCM products for the building and construction industry on its main site, mcmentinc.com, since 2016.

Magill says more retail products are in the pipeline: "Look for Team Apini thermal underwear, henleys, pillow cases and sheeting, a bunzy protector (seat cushion thermal protector for home, auto, camping, stadium, etc.), heating and cooling packs (for work, first responder and dietary applications) as well as an equestrian line we are working on now for both horse and rider (dressage focus)."

Patent application: Three-dimensional polymeric fiber matrix layer for bedding products

Ben Welter - Friday, March 01, 2019

U.S. patent application 20190053632 (applicant Serta Simmons Bedding LLC, Atlanta, Georgia)

"A three dimensional polymeric fiber matrix layer including a phase change material coated thereon for use in a bedding product such as a mattress is disclosed. The phase change material is selected to provide improved cooling properties, which along with the free volume provided by the three dimensional polymeric fiber matrix markedly improves temperature management when used in a bedding product."

http://www.freepatentsonline.com/20190053632.pdf

Related:

Upcycled mattress nucleus of essential foam elements

PCM briefing: PureTemp joins RSPO; Reda's new PCM fabric on display in Milan

Ben Welter - Monday, February 18, 2019

PureTemp LLC has joined the Roundtable for Sustainable Palm Oil as an associate member. The nonprofit organization, which has more than 4,000 members worldwide, promotes the growth and use of sustainable oil palm products. In November, RSPO adopted stricter standards for certified sustainable palm oil, including a total ban on deforestation by its members.

Reda Group's new Active Phase temperature-control fabric was on display at the Milan fabric trade show earlier this month. The material uses phase change material to keep body temperature constant when ambient temperature fluctuates. Reda says the material features enhanced breathability and softness and is "easy to clean, even in water."

University of Maryland fabric•  University of Maryland researchers have created a temperature-control fabric that does not rely on phase change material. The fabric changes its insulating properties in response to the environment. In warm and humid conditions, the fabric allows radiant heat to pass through. When conditions become cooler and drier, the fabric reduces the heat that escapes. Two types of synthetic materials in the fabric — one that absorbs water and another other that repels it — are coated with carbon nanotubes. The fibers warp and relax in response to changing humidity, opening and closing pores in the fabric. 

• In interviews with Advanced Textiles Source, four entrepreneurs were asked: What do you wish you had known early on when you were first dealing with intellectual property law and patent issues? “Get feedback on why you need a patent,” said Jeremy Wall, founder and CEO of smart-clothing startup Lumenus. “Where else could you spend $20,000?” Said Matt Kolmes, CEO of VOLT Smart Yarns: “Even if you are on a tight budget, file that Provisional application immediately before you show your idea to anyone, or talk about it with anyone."

• The Marie Sklodowska-Curie Action program is seeking applicants for a one- to two-year research fellowship at the Oslo Metropolitan University. The European Union-funded fellowship will focus on the energy-performance aspects of phase change material in buildings. "In this collaboration," OsloMet says, "we intend to gain our understanding and explore about the micro-structural aspect to relate the macro-scale behavior at continuum level." The application deadline is March 7.

Patent application: Mattress for improved sleep

Ben Welter - Thursday, February 07, 2019

U.S. patent application 20190038040 (applicant Technogel Italia S.r.l., Pozzoleone, Italy):

"Mattresses and mattress toppers having an upper layer including a high heat capacity material are disclosed. The mattress is configured to reduce a core body temperature of the body supported thereon, and thus induce improved sleep, measurable as an increase in the time spent in slow wave sleep relative to standard mattresses having lower heat capacities. The high heat capacity of the mattress may be attributable to the geometry and nature of the support material and optional additives, including polymer gels and phase change materials. Methods for improving sleep quality and uses of the high heat capacity mattresses to improve sleep quality are also disclosed."

http://www.freepatentsonline.com/20190038040.pdf

Patent application: Cooling fabric with PCM coating

Ben Welter - Tuesday, January 22, 2019

U.S. patent application 20190017200 (applicant Bedgear LLC, Farmingdale, N.Y.):

Bedgear patent drawing"A three-layer circular knitted jacquard fabric includes a first layer having a yarn made from a first material. A second layer of the fabric includes a yarn made from a second material. A third layer of the fabric includes a yarn made from a third material. At least one of the materials includes ultra-high weight molecular polyethylene. The second layer is positioned between the first layer and the third layer such that the second layer provides loft between the first layer and the third layer. ... In some embodiments, a top layer, such as, for example, the first layer can be coated with a phase change material and a bottom layer, such as, for example, the third layer can be coated with a phase change material. It is envisioned that the first layer and/or the third layer can be soaked with a phase change material and/or can be infused with a phase change material."

http://www.freepatentsonline.com/20190017200.pdf

PCM briefing: New Outlast materials on display at Heimtextil; agenda set for Jan. 24 workshop at Nottingham

Ben Welter - Saturday, January 12, 2019

Outlast recycled polysterNew Outlast products based on recycled materials were on display at the Heimtextil show in Frankfurt, Germany, this week. "In the new Outlast products," the company said, "temperature-regulating technology is applied to base material (knitted fabric or nonwoven) which is produced from 100% recycled polyester textiles or PET bottles and therefore meets the Global Recycle Standard (GRS). Further products that use renewable materials for other components of the technology are planned to expand the portfolio in the near future."

Tempur-Pedic says the latest version of its Breeze mattress line features a new "PureCool+ breathable phase change technology [that] absorbs excess heat and recharges faster to help the sleeper feel cooler when falling asleep."

Eindhoven University of Technology is seeking candidates for a Ph.D. position in nanoporous materials for thermal energy storage

Chemical & Engineering News is seeking candidates for a six-month science-writing editorial fellowship for 2019.

• A proposal to use microencapsulated phase change material to help motor vehicles run smoothly in extreme cold has been honored by Azerbaijan's Ministry of Economy as the best youth startup project of the year. A team of chemical engineering students from Baku Higher Oil School developed the concept.

The agenda has been posted for the Workshop on Energy Efficient Buildings & Thermal Energy Storage Systems to be held Jan. 24 at the University of Nottingham in the United Kingdom. Topics include "Enhanced geothermal borehole heat exchangers with PCMs," "Innovative composite smart materials for heating, cooling and humidity control in buildings" and "Demonstration of the TESSe2b system in three demo sites." The free, all-day workshop is part of the European Union-supported project TESSe2b.

•  From LinkedIn: "Pluss Advanced Technologies Pvt. Ltd. is expanding its vendor development team for its PCM and polymers business. Candidates with prior experience in purchase or vendor management will be preferred, others will be considered too. Want to understand more about the opportunity? Please write to Ruchika Garg at jobs@pluss.co.in."  

• The world's first grid-scale pumped heat energy storage is now in operation at Newcastle University. "The system consists of two containers – a cold store and a hot store – filled with gravel and an inert gas," Utility Week reports. "They are connected via a reversible heat pump/engine. When surplus energy needs to be stored, gas is withdrawn from the cold store and compressed using an electrically-powered pump, thereby raising its temperature. The gas is injected into the hot store where the heat is transferred to the gravel. It is then withdrawn from the hot store, expanded to further lower its temperature and returned to the cold store. To recover the stored energy, the process is reversed."

Dominic Hyde, vice president of Credo on Demand at Pelican BioThermal, said the rental program increased its temperature-controlled container fleet size by 90 and increased revenue by 90 percent in 2018.

PCM briefing: RSPO orders ban on deforestation; ESA calls on Congress to clarify tax credit

Ben Welter - Friday, November 30, 2018

• The Roundtable on Sustainable Palm Oil has ordered a total ban on deforestation by its members, amid growing pressure from both companies and consumers. Members voted overwhelmingly in favor of the ban at the group’s annual general assembly in Malaysia Nov. 15. The ban is now part of the RSPO core standards, which member companies must comply with for their products to be certified “sustainable.”

Sunamp Ltd. reports that it has received $2.8 million in new seed funding. The latest round of investors includes Scottish Investment Bank, Equity Gap, PAR Equity and the Japanese energy utility Osaka Gas. Sunamp, based in Edinburgh, Scotland, recently signed a memo of understanding with Trina Solar to develop an integrated solution combining Sunamp heat batteries with heat pumps manufactured at Trina's new factory in Changzhou, China.

• From Andreas Hauer, head of ZAE Bayern's Energy Storage Division; via LinkedIn: "The Progress Report for the working group 'Material and Component Development for Thermal Energy Storage' (http://task58.iea-shc.org/) has been approved by the Executive Committee of #IEA #EnergyStorage programme. One more year for international collaboration and inspiring discussions among material experts and applied scientist on advanced thermal energy storage!" Task 58 Annex 33 deals with advanced materials for latent and chemical thermal energy storage, PCMs and thermochemical materials.

• Registration is open for an all-day Workshop on Energy Efficient Buildings & Thermal Energy Storage Systems to be held Jan. 24 at the University of Nottingham in the United Kingdom. The free event "will present and discuss current innovations within the field of energy storage and efficiency in the built environment. Joining together industry and academia for discussions focussing on integrated solutions for residential, commercial and public buildings using renewable sources. Results will be presented from the ongoing TESSe2b European project, as well as results from other projects in the field of energy efficiency, generation & storage in buildings." 

AQUACHILL Cool Coating, a water-based phase change material coating for bedding materials and other cooling applications, is among six Dow technologies to make R&D Magazine's 2018 R&D 100 list. The awards recognize "revolutionary technologies" introduced during the past year. 

• The RAL Quality Association PCM's next meeting has been set for April 2, 2019, in Düsseldorf, Germany.

• A coalition led by the Energy Storage Association is calling on Congress to clarify that energy storage systems qualify for the Investment Tax Credit. The ESA said bipartisan legislation in the House and Senate would "ensure a level playing field" for storage resources. 

• The U.S. Department of Energy's National Renewable Energy Laboratory has been awarded nearly $2.8 million to develop a system for grid electricity storage and power generation. The system includes a high-temperature charging device, low-cost thermal energy storage modules, a high-performance heat exchanger, and a closed-loop Brayton cycle turbine. 

Ecozen Solutions of India has won Rabobank’s inaugural Food Loss Challenge Asia. The award recognizes innovative ag-tech start-ups working to solve farm-to-market food loss problems. Ecozen, one of five finalists, won both the Jury’s Prize of $15,000 and the Audience’s Prize of $5,000. Ecozen makes portable solar cold rooms for small farms, using a thermal storage unit that can store power for more than 36 hours in case of cloudy or rainy weather.

Energy Storage News reports that Lumenion's new storage technology, now being trialled in Berlin by Vattenfall, can store energy in steel structures for up to 48 hours. The technology is designed to provide low-cost energy storage for combined heat and power applications, using steel as the medium. The steel modules store energy thermally at up to 650 degrees Celsius.

Patent application: Mattress containing microencapsulated phase change material

Ben Welter - Monday, October 29, 2018

U.S. patent application 20180279796 (applicant Milliken & Co., Spartanburg, S.C.):

"A mattress containing a core section, a high loft non-woven layer at least partially covering a first side of the core section and containing a plurality of heat and flame resistant fibers, bulking fibers, and binder fibers, a ticking layer at least partially covering the high loft non-woven layer and containing a textile layer, a pattern coated layer. The pattern coated layer may be printed on the high loft non-woven layer, the ticking layer, or any layer between the high loft non-woven layer and the ticking layer. The pattern coated layer contains a blend of microencapsulated phase change material (PCM) and a binder, wherein the PCM is fully encapsulated by the binder."

http://www.freepatentsonline.com/20180279796.pdf

Patent application: Enhanced thermally conductive cushioning foams

Ben Welter - Monday, October 22, 2018

U.S. patent application 20180298264 (applicant Peterson Chemical Technology LLC, Austin, Texas):

"Methods and combinations for making and using one or more thermally conductive cellular foam layers and other structures comprising flexible cellular foam and metallic material particulates, and said thermally-conductive cellular foam layers may be located on, under, or in cushioning foams and mattresses or placed between on, under, within, or between other layering substrates, columns, and other structures to increase the overall cooling capability of the composite. The thermally conductive foam may be used in mattresses, pillows, bedding products, seat cushions, medical cushioning foams, pet beds, and similar materials used in bedding and comfort products."

http://www.freepatentsonline.com/20180298264.pdf