Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

CryoSol®Plus - Air conditioning of buildings with phase change slurries

03.12.2014

When it is very warm outside, the air conditioning system takes care of a consistently cool room climate inside the house. The water paraffin mixture CryoSol®Plus could make the purchasing of an air conditioning system for office buildings superfluous in the future and at the same time considerably unburden the power grids. Fraunhofer UMSICHT is researching areas of use for phase change slurries (PCS).

Cryosol®Plus looks like milk. But don't even think about drinking it. While the composition made of paraffins and water is non-poisonous, it still isn't all that tasty. Paraffin is known as wax or as maintenance oil in Vaseline. In CryoSol®Plus, the paraffins serve – finely dispersed – as phase change material (PCM) for heat and hold storage.


CryoSol®Plus – Dispersion made of water and paraffin.

© Fraunhofer UMSICHT


Capillary tube mats are similar to the principle of the human nervous system.

© Fraunhofer UMSICHT

The principle: When the dispersion absorbs heat, the solid tiny paraffin balls "melt" into paraffin droplets and store the heat. Once the solution cools down, the droplets become solid again. In CryoSol®Plus, the paraffin exists finely dispersed in water as a heterogeneous blend of substances.

CryoSol®Plus – two to three times the energy density of water

Jointly with the RWTH Aachen university, Fraunhofer UMSICHT has researched the utilization of CryoSol®Plus in supply systems. In principle, the blend can serve as heat transfer fluid, as storage medium for thermal systems, and for cooling. "In a temperature range from 5 to 20 degrees Celsius it is a good alternative to cold water, since it features a two to three times higher energy density", explains Dipl.-Ing. Tobias Kappels, researcher in the Thermal Energy Storage and Systems group.

In the project, the dispersion was utilized for the storage of nocturnal cold to then dissipate it during the day on a room-by-room basis via capillary tube mats in the ceiling. The idea for constructing the capillary tube mats originates from nature and corresponds to the network of fine nervous system under our skin which not only provides us with nutrition but also serves to regulate body heat. In buildings, the capillary tube mats in ceilings, walls, or floors are utilized for combined area heating or cooling.

Higher transport capacity, better storage

In the project, the dispersion was manufactured, characterized, and tested in a heating/cooling system, and the substance properties of the dispersions were modeled. The utilization of CryoSol®Plus could significantly increase the transport capacity and storage capability of a distribution network.

The utilization of the dispersion is of interest especially to the manufacturing industry, air conditioning, chemical and automotive industry as well as for cooling devices in the foodstuffs industry.

The project was funded for four years in the context of the framework program EnEff: Wärme (Energy Efficiency: Heat) by the German Federal Ministry of Economics and Technology (funding ID 0327471A).


Weitere Informationen:

http://www.umsicht.fraunhofer.de/en/press-media/2014/crysolplus-pcs-energy-storage.html

Iris Kumpmann | Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT

More articles from Architecture and Construction:

nachricht New, forward-looking report outlines research path to sustainable cities
24.01.2018 | National Science Foundation

nachricht Magnetic liquids improve energy efficiency of buildings
16.01.2018 | Friedrich-Schiller-Universität Jena

All articles from Architecture and Construction >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

Im Focus: Like a wedge in a hinge

Researchers lay groundwork to tailor drugs for new targets in cancer therapy

In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...

Im Focus: The Future of Ultrafast Solid-State Physics

In an article that appears in the journal “Review of Modern Physics”, researchers at the Laboratory for Attosecond Physics (LAP) assess the current state of the field of ultrafast physics and consider its implications for future technologies.

Physicists can now control light in both time and space with hitherto unimagined precision. This is particularly true for the ability to generate ultrashort...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Diamond-like carbon is formed differently to what was believed -- machine learning enables development of new model

19.04.2018 | Materials Sciences

Electromagnetic wizardry: Wireless power transfer enhanced by backward signal

19.04.2018 | Physics and Astronomy

Ultrafast electron oscillation and dephasing monitored by attosecond light source

19.04.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>