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

10-star energy home features 600 kg of biobased PCM

Ben Welter - Friday, August 31, 2018

10 Star Home exterior

All new homes in Australia must meet energy efficiency standards set in the National Construction Code, which includes the option of complying with the 6 Star Standard. Stars are calculated using computer simulation at the design stage to assess thermal performance based on elements such as orientation, layout, materials, insulation and glazing. The more stars, the better the thermal performance.

Victoria’s first 10-star energy home, completed in 2017, is estimated to cost only $3 a year to heat, cool and light. The two-bedroom, two-bathroom home features a 5kW photovoltaic solar roof, highly efficient LED lighting, cross-flow ventilation, industrial concrete floors, under-slab insulation, double-glazed windows and biobased phase change material in the walls and ceilings.

10 Star Home interiorThe 160-square-meter home was built by The Sociable Weaver of Melbourne in collaboration with Clare Cousins Architects. Natalie Woods, marketing manager at Sociable Weaver, answered questions about the project.

Q: The 10 Star Home has been described as “Australia’s first 10 star rated, carbon positive and zero waste home.” Is that accurate?

A: “The 10 Star Home is Victoria's first home to have a 10 star energy rating. We believe it to also be the first home in Australia to be carbon positive, 10 star rated, and built to zero waste and building biology principles.”

Q: What is the home’s status?

A: “The 10 Star Home is a permanent display home – this is so it can serve as an education resource to the public and to our industry peers. We also run our coastal office from the home, which means we can monitor the home's performance across all four seasons.”

Q: Has your company worked with PCM before? How did you hear about it?

A: “This is the first time we've used BioPCM in a build. It was recommended by our consultant Tim Adams at F2 Design.”

Q. Who supplied the PCM?

A: “The BioPCM was supplied by Phase Change Energy Solutions of Mitcham, Victoria.  The melt temperature range is 20-24C. It is contained in mats made of food-grade plastic.”

Q: How much PCM is used in the home?

A: “The ceiling is 162sqm at 2.7kg/sqm = 437kg and the walls 61sqm = 165kg.”

Q: Is PCM used in a mostly passive manner, assisted by natural ventilation with occasional help from ceiling fans?

A: “The 10 Star Home has been designed to maximum passive solar heating and natural cooling – this includes maximizing northerly sun through large north-facing double-glazed windows, thermal mass in concrete slab flooring and BioPCM insulation in the walls and ceiling.”

Q: What kind of feedback are you getting from people who tour the house, and those who work in the office there?

A:When people walk into the 10 Star Home, often from the cold windy Victorian weather outside, they always remark how warm it is inside the home. The team who work in the home find the space is always a beautifully comfortable temperature inside, no matter what the weather is outside. We can't wait to use this innovative product in a client's home and see how it can benefit a family day-to-day.”

Q: What lessons have you learned that will help you improve your next 10-star home – and where will it be built?

A: “It took a long time to get the design of the home perfect to ensure the carbon positive and 10 Star energy rating, so this was definitely a lesson in patience for everyone involved – but it was well worth it! We're still using the current 10 Star Home as a showcase to industry and clients so don't have plans to build another one just yet, however it would be great to build one in another location in Australia to showcase how the 10 star energy rating can be achieved in different climates.”

Q: Have you since used PCM products in any other projects?

A: “We haven't used Bio-PCM in any of our latest projects but are hoping to use it again soon as we've found it to be so effective in the 10 Star Home.”

PCM briefing: Monodraught wins a Queen's Award; Dulas delivers 50 PCM-equipped solar refrigerators to Pakistant

Ben Welter - Monday, April 30, 2018

John Curley, former technical sales manager at Conex Bänninger and Viega Ltd., has rejoined Monodraught Ltd. as technical consultant. 

• Monodraught, of High Wycombe, United Kingdom, won a Queen's Award for Enterprise this week for its Cool-phase system, which provides "intelligent control of ventilation and cooling using phase change materials." Peli BioThermal of Bedfordshire also received a Queen's Award. The temperature-control packaging company was honored for its "export expertise." 

Dulas Ltd. has delivered 50 of its VC110SDD solar-powered refrigerators to Pakistan. The 110-liter refrigerators, accredited by the World Health Organization, use paraffin-based phase change material to keep vaccines at temperatures ranging from 5°C to 43°C. Renewable Energy Magazine reports that the U.K. company has also launched a temperature-monitoring device that can record and transmit the performance of the refrigerators in real time at any location in the world. 

Andrew Michler's MARTaK Passive House in Colorado has been named the overall winner in Green Builder's 10th annual Green Home of the Year Awards. Natural, nontoxic and recycled materials are used throughout the 1,200-square-foot house. Biobased phase change material with a melt point of 23º C is used to help even out temperature spikes. Five hundred square feet of ENRG Blankets made by Phase Change Energy Solutions is installed a south-facing interior wall. 

• The agenda has been released for the next Cold Chain Global Forum, set for Sept. 24-27 in Philadelphia. The lineup includes discussions on "CRT Product Solutions: How Can We Use Phase Change Materials or Water-based Refrigerants to Successfully Ship Compliance Ready Materials?" and "How Can We Achieve Sustainability & Environmental Packaging Designs in Temperature Controlled Packaging?" Also on the agenda are sessions on "Improving Sustainability & Environmental Packaging to Reduce Waste and Ensure Temperature Compliant Packaging Designs" and "Maintaining Temperature Control Distribution with New Reduced Delivery Targets" and a master class, "Certification Program: Life-Cycle Development of Temperature Assurance Packaging." 

Safer Chemicals in Products 2018 will be held in Boston Sept. 17-18. Topics include "Making the Business Case for Safer Chemicals" and "Substitution Strategies in Europe and Canada."

• New from QY Research: "Temperature Controlled Packaging Solutions Market Size, Share & Trends Analysis Report By Product, By Type, By Region, By Application, Competitive Landscape, And Segment Forecasts 2018-2025"

For Melbourne family, PCM ceiling mats ‘worth the investment’

Ben Welter - Monday, March 05, 2018

A recent two-story addition to a bungalow in suburban Melbourne, Australia, uses bio-based phase change material as a lightweight alternative to thermal mass.

Interior of Playtime HousePhase Change Energy Solutions BioPCM mats containing about 270 kilograms of phase change material were installed above the ceilings, according to architect Penny Guild of Guild Architects. The PCM has a melting point of 24 degrees C. In an e-mail interview, Guild talked about PCM use in the Playtime House project.

Q: What are the projected energy savings related to PCM use in this project?

A: “We didn’t do any specific calculations, but the manufacturer claims between 40 to 80 percent saving in energy bills. The amount of PCM that was put in the project equates to 10kw hours.”

Q: Have you worked with PCM products in the past? Are there plans to use PCM in future projects?

A: “It’s relatively new for the residential market in Australia so I haven’t used it before. The upfront costs are reasonably high, and being a new product there’s not many people that potential clients can turn for advice on its effectiveness. They can’t just ask a friend ‘did you think the PCM was good value in your house’ because no one else has used it. The clients on this project had a high degree of environmental consciousness and both had a science background of some sort (doctor and teacher) and they felt confidant enough it was worth the investment. As the project was an extension above an existing structure adding traditional heavy mass materials was basically impossible which is where the PCM came in.”

http://www.guildarchitects.com.au/northcote-house/

http://futurist--architecture.blogspot.no/2018/01/playtime-house-in-northcote.html

Inspired by nature, 'active energy building' takes wing in Liechtenstein

Ben Welter - Thursday, February 08, 2018

Marxer Haus, west side

The Marxer building on a rare sun-splashed January morning in Vaduz.

An “active energy building” bristling with new technology has officially spread its sophisticated wings in Vaduz, Liechtenstein.

The six-year project was directed by Anton Falkeis and his wife, Cornelia Falkeis-Senn, world-renowned architects based in Vienna. Their client, Liechtenstein attorney and banker Peter Marxer, challenged them to design a sustainable apartment building that relies as much as possible on renewable energy.

A team that included energy experts from the Lucerne University of Applied Sciences and Arts was assembled for the complex task. Countless hours of planning, research, design work, computer modeling and prototyping produced a number of innovations used in the 12-unit Marxer building, including:

• An array of 13 photovoltaic panels that rise from the roof and track the sun’s path across the sky, optimizing the collection of solar energy.

• Load-bearing structures that mimic nature in appearance and function.

• “Acoustically active” three-dimensional interior lighting elements that act as sound diffusors and absorbers.

Anton Falkeis and climate wing
Anton Falkeis and one of the PCM-filled climate wings.
• Seven “climate wings” that fold out of the building facade and absorb, store and release thermal energy as needed to keep the interior comfortable.

The computer-controlled solar panels, which measure up to 14 square meters, rise from the roof at sunrise and turn with the sun during the day. When night falls or inclement weather approaches, the panels automatically fold back into the roof. The system is said to collect nearly three times the solar energy of stationary panels.

Anton Falkeis described the project as a “prototype for a decentralized urban energy production system that’s part of a bigger network.”

“We created an energy cluster with the surrounding buildings, some of which are owned by the same client,” he said. “We share the energy generated by our PV trackers embedded in the roof structure first with the cluster. We sell any surplus to the grid. The utility can use the surplus to refill the hydro power plant storage.”

The climate wings contain 1.4 metric tons of Rubitherm PCM enclosed in aluminum tubes.

Climate wing detail
Each climate wing contains rows of PCM-filled aluminum tubes.

Four wings on the building’s western side are dedicated to heating. They are filled with PCM that has a melting point of 31 degrees Celsius. In cold months, these wings open during the day, exposing the PCM to solar radiation that melts the material. Each wing folds back at night and connects to ventilation systems in the adjoining apartments. The tubes release heat as the PCM solidifies, and low-power fans move the warm air throughout the apartments.

Three wings on the eastern side are dedicated to cooling. The PCM in these has a melting point of 21 degrees C. In summer, the wings open at night, allowing cool air to solidify the PCM. Each wing folds back against the building during the day and connects to the adjoining ventilation systems. Indoor air is cooled as it flows past the frozen PCM in the wing.

Climate wing detail
Ducts carry air warmed by PCM into the apartments.
With a surface area of 24 square meters, the western wings are said to generate about 10 percent of heating capacity. The eastern wings, with a surface of 15 square meters, generate around 16 percent of cooling capacity.

How did the team address flammability issues associated with biobased PCM?

“We developed the encapsulation so that no oxygen can come in contact with the PCM,” Falkeis said. “The whole thing was tested to 300 degrees Celsius, heating up, cooling down, heating up. And finally we got permission by the building commission, a Swiss testing certificate, to use it in the building envelope. Swiss testing accreditation is valid all over Europe.”

Aside from patent applications, what’s next for all this ground-breaking technology? 

“We need to reduce complexity and try to produce more standardized building envelope panels or systems that could be part of a regular building system,” Falkeis said. “This is our next step: Reducing the complexity in terms of form.”

He also hopes to spread awareness. "Active energy building" technology was on display at a New York City exhibition that ended in January. The exhibit opens in Los Angeles on March 1; after that, it will be on display in Vienna and Berlin.

Now that the complex project is complete and the first tenants have moved in, the architect says he is "very happy" with the results.

“There’s a lot of architectural and technological detailing,” he said. “There are more than 800 drawings just on detail. It’s very precise. It’s very well done. Very high standards. It’s really crazy how finally everything came out like we planned it.  It was six years of hard work, being on site, checking everything. …  It was a sort of never-ending ongoing research project. It was really exciting to be part of this.”

Marxer Haus, east side

The east side of Marxer building faces a small park, a biking trail and a creek.

PCM briefing: Underground heat storage proposed for Hamburg; Solar Decathlon entry will have PCM in ceilings

Ben Welter - Wednesday, February 15, 2017

• The water utility in Hamburg, Germany, wants to build an underground thermal heat storage system that could supply about 25 percent of the city's heating needs with waste heat from industrial and power plants. A huge saltwater aquifer below the city is seen as an ideal "thermal battery" in which to store heat for use in winter.

• The University of Nevada-Las Vegas entry in the 2017 Solar Decathlon will feature phase change material in the ceilings of the 900-square-foot home.

Sonoco has announced a 10 percent price increase on all expanded polystyrene components used in its temperature-assurance packaging products. The company said the increase reflects the rising cost of polystyrene, the key raw material in EPS products.

University of Colorado engineers have developed a metamaterial that can cool objects even under direct sunlight with zero energy and water consumption. The glass-polymer hybrid material measures just 50 micrometers thick and can be manufactured economically on rolls, making it potentially viable for large-scale residential and commercial applications.

StoCalce Functio, a wall covering material developed by the Swiss research institute Empa together with the building specialist Sto, manages interior humidity by absorbing, storing and releasing moisture. Perhaps PCMs could be added to the material to manage temperatures as well. [German]

Alexium International, maker of Alexicool phase change material, is one of nine companies planning to attend Gabelli & Company's 8th annual Specialty Chemicals Conference in New York City on March 22.

Axiom Exergy co-founders Anthony Diamond and Amrit Robbins, who made Forbes' "30 Under 30" in the energy sector this year, shared advice for other young entrepreneurs on energy.gov. Said Robbins: “If you want to build a business, go out and get third party validation for your technology, team and product-market fit."

PCM briefing: Stanford energy hub wins AIA award; is that PCM atop a Japanese greenhouse?

Ben Welter - Friday, January 20, 2017

Stanford University's new Central Energy Facility, the heart of a campus-wide energy system, has won a 2017 Institute Honor Award, the American Institute of Architects' highest recognition for design excellence. A 2.5-million-gallon hot water tank in the courtyard showcases the energy plant’s mission.

Greenhouse in Yamaguchi Prefecture• A strawberry-cultivation system that stores excess solar heat in a tank filled with cobblestones reduced heating costs by 80 percent at a greenhouse in Japan's Yamaguchi Prefecture. "A mat-like heat-insulating material" – phase change material, perhaps? – atop the greenhouse, right, is rolled up during the day to let in sunlight.

A power plant under construction in Kiel, Germany, will be able to store more than 1,500 megawatt hours of heat in a 60-meter-high water tank, ensuring the supply of more than 70,000 district heating customers for up to eight hours. The gas-fired Stadtwerke Kiel will simultaneously generate electricity and heat through cogeneration.

• New from QYResearch: "Europe Bio-Based Phase Change Materials Market Report 2017" and "Global Bio-Based Phase Change Materials Market Professional Survey Report 2017."

• The Industrial Fabrics Association International has issued a call for presenters for the IFAI Advanced Textiles Conference, to be held Sept. 26-29 in New Orleans. The deadline for submitting a proposal is Feb. 5.

• In partnership with Technical University Hamburg Harburg and Hamburg Energie, Siemens AG is developing a thermal storage system that will convert excess wind energy to heat and store it in rock fill. A steam turbine will convert the heat energy back to electricity on demand. The full-size system will be able to store about 36 MWh of energy in a container filled with 2,000 cubic meters of rock.

• The global market for thermal energy storage is projected to reach a value of $1.8 billion by 2020, Transparency Market Research reports. Latent heat and thermochemical storage technologies are expected to grab market share from sensible heat technology, which is now the dominant technology in the market.

Pluss Advanced Technologies has an opening for a quality assurance manager at its facility in Bawal, India. The quality manager is responsible for overall development, implementation and maintenance of the quality management system for the company's polymer and PCM business units.

Colorado's first certified passive house 'has gone well past expectations'

Ben Welter - Wednesday, January 04, 2017

Colorado's first certified International Passive House is nestled in the foothills of the Rocky Mountains north of Denver. The 1,200-square-foot MARTaK house, designed by architect and author Andrew Michler, is used primarily as an off-the-grid workspace. The structure has now been occupied continuously for six months. Has it met Michler's energy expectations?

MARTaK passive house photo by Andrew Michler"Yes," Michler says, "it's gone well past my expectations. ... We haven't turned on the heating system this year." 

A solar array shared with a neighboring home provides all electrical power and most of the heating, with a propane-powered hydronic system serving as backup. Passive House Planning Package software was used to find the most efficient mix of insulation, windows and shading. Natural, nontoxic and recycled materials are used throughout the house. 

Biobased phase change material with a melt point of 23º C is used to help even out temperature spikes. The PCM is contained in 500 square feet of ENRG Blankets made by Phase Change Energy Solutions. Most of the material is installed a south-facing interior wall. 

Is it possible to measure the PCM's impact on overall performance?

"That's the question that I haven't found anybody able to answer," Michler says. "It's more about experiential. It's hard to isolate the PCM performance. There's no good modeling software for this. ...

"Overheating has been the biggest issue with passive houses, and we're seeing some anecdotal success with PCMs. We had a really warm fall, and the PCM did seem to level out the interior temperature, leveling out at 78 degrees Fahrenheit."

Has Michler used PCM in other projects? "No, this is the first. I do have interest in trying it again."

http://www.archello.com/en/project/martak-passive-house

Research roundup: Polyethylene glycol/hydroxyapatite composite; root zone heating; lime plasters; more

Ben Welter - Tuesday, November 29, 2016

A polyethylene glycol/hydroxyapatite composite phase change material for thermal energy storage [Applied Thermal Engineering]

Phase diagrams, eutectic mass ratios and thermal energy storage properties of multiple fatty acid eutectics as novel solid-liquid phase change materials for storage and retrieval of thermal energy [Applied Thermal Engineering]

Analysis of the technical, environmental and economic potential of phase change materials (PCM) for root zone heating in Mediterranean greenhouses [Renewable Energy]

Effect of inclination angle on the melting process of phase change material [Case Studies in Thermal Engineering]

Densities of Selected Phase Change Materials in Liquid State [Chemical Data Collections]

Hygrothermal performance improvement of the Korean wood frame walls using macro-packed phase change materials [Applied Thermal Engineering]

Reinforcing and shape stabilizing of phase-change material via graphene oxide aerogel [Carbon]

PCM-enhanced Lime Plasters for Vernacular and Contemporary Architecture [Energy Procedia]

Characterisation and Enhancement of Phase Change Slurries [Energy Procedia]

Packed-bed Thermal Energy Storage Analysis: Quartzite and Palm-Oil Performance [Energy Procedia]

Thermal properties and reliability of eutectic mixture of stearic acid-acetamide as phase change material for latent heat storage [Journal of Chemical Thermodynamics]

Application of material assessment methodology in latent heat thermal energy storage for waste heat recovery [Applied Energy]

Research roundup: PV-solar thermal collectors with PCM; solaria in cold climates; thermal storage tank stratification; more

Ben Welter - Wednesday, November 09, 2016

Comparative analyses on dynamic performances of photovoltaic–thermal solar collectors integrated with phase change materials [Energy Conversion and Management]

PCM thermal storage design in buildings: Experimental studies and applications to solaria in cold climates [Applied Energy]

Development of structural-functional integrated energy storage concrete with innovative macro-encapsulated PCM by hollow steel ball [Applied Energy]

Experimental investigation of the effect of dynamic melting in a cylindrical shell-and-tube heat exchanger using water as PCM [Applied Energy]

Role of PCM addition on stratification behaviour in a thermal storage tank – An experimental study [Energy]

PCM briefing: Siemens touts packed-bed thermal storage breakthrough; TSCA's impact on chemical importers

Ben Welter - Thursday, October 20, 2016

Siemens says its recently launched packed-bed thermal storage concept for wind power could deliver energy at well below 0.10 euros per kilowatt-hour. The system uses surplus electricity to blow air at 600 degrees Celsius across a packed bed of basalt rocks in an insulated container.

• The National Law Review takes a detailed look at the impact of the newly revised Toxic Substances Control Act on chemical importers, noting that "companies planning to ship chemical-based products to the United States should have a basic understanding of the TSCA." 

• Researchers from the Universidad Politécnica de Madrid have invented a new thermal energy storage system that uses molten silicon to store up to 10 times more energy than existing storage devices. "The proposed new thermal energy storage system," according to a report in New Atlas, "involves heating the silicon in a container using either concentrated sunlight on surplus electricity generated by renewable power. The molten silicon – which can reach temperatures of around 1,400° C (2,552° F) – can be isolated from its environment until energy is needed, at which point the heat is converted to electricity."  

SolarReserve has proposed building the world's largest solar power plant in Nevada. The 2-gigawatt Sandstone project would include up to 10 concentrated solar arrays, each equipped with a molten salt thermal storage system. 

SUNCNIM has raised 60 million euros to help finance construction of the world’s first commercial Fresnel concentrated solar power plant with energy storage. The plant in the French Pyrenees will have four hours of thermal storage capacity. The thermal energy will be converted into electricity by a steam generation process.

Ministry, whose high-tech clothing line includes dress shirts infused with phase change material, has opened a store in downtown Chicago

• The American Society of Interior Designers has opened a Material ConneXion library at the society's new corporate headquarters in Washington, D.C. The Materials ConneXion database lists more than 7,500 "unique, innovative and sustainable materials." PureTemp's biobased phase change materials were added to database last year.

Ember Technologies, which raised more than $350,000 on IndieGoGo last year to develop a temperature-adjustable mug, sent backers another update this week: "We are happy to announce that shipping will begin the first week of November for our pre-order customers." Delivery was initially set for April 2016. The $150 mug uses bio-based phase change material and a microprocessor-controlled heating system to maintain hot beverages at temperatures set by the user.

• New from Market Research Engine: "Global Microencapsulation Market Research Report - Industry Analysis, Size, Share, Growth, Trends and Forecast, 2014 - 2021." The report projects the market will reach $8.5 billion by 2021, a compound annual growth rate of 8 percent.