In its latest issue the research magazine "Pictures of the Future" reports about the chances of this multi modal energy system. Scientists of Siemens' global research Corporate Techlology want to combine diverse energy sources, such as oil, gas, wind, solar, biomass, and waste heat in a way that ensures they produce electricity, heat, cooling, and potable water in the most efficient and environmentally friendly manner possible.
In most cases, only the individual aspects of such systems were examined until now - for example, approaches for feeding in energy from renewable sources. Now the researcher work with grids that consist of many components and study their interaction and the effect they have on overall stability.
One aspect the researchers are particularly interested is the waste heat from machines and other industrial equipment. Today, waste heat in the low-temperature range in particular is rarely used in an economically viable manner. However, this heat contains valuable energy that can be used to recycle waste water into drinking water, for example. With this in mind, Siemens researchers in Erlangen have developed a demonstration plant which uses waste heat within the temperature range of 70 to 120 degrees Celsius to vaporize wastewater. The resulting steam is channeled into a condenser, where it precipitates in a process that produces pure water and some concentrated wastewater.
In the prototype flows wastewater in from the top through insulated pipes. It then passes through several heat exchangers, where waste heat is used to raise the water's temperature. After that, the wastewater trickles through an evaporator and evaporates. A fan generates an air current that carries the vaporized water upward. The vapor condenses again on the right side, where the condenser is located. The separation is done. To use a minimal amount of electrical energy to transport as much water vapor as possible the temperature distribution and the air volume has to be regulated precisely. The next step could be a pilot facility that would purify 25 cubic meters of water per hour. That would be sufficient to treat the wastewater from bottling processes in the beverage industry. However, the technology can also be used to purify the wastewater generated by brewery processes and oil drilling operations.
The researchers have also built a heat pump that can raise temperatures to a maximum of 140 degrees Celsius - as opposed to the previous limit of 90 degrees. They use a special process fluid for the heat cycle. The new heat pump makes it possible to boost the temperature of industrial waste heat or heat from geothermal sources from between 70 and 90 to 130 degrees Celsius - the norm in district heating systems. The heat could be used to warm buildings.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
Global threat to primates concerns us all
19.01.2017 | Deutsches Primatenzentrum GmbH - Leibniz-Institut für Primatenforschung
Reducing household waste with less energy
18.01.2017 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences