In the RWE Wind Heating project, the two companies have worked together with tekmar Regelsysteme GmbH to equip the storage heating systems in two neighborhoods with smart control devices.
The storage heaters were programmed to charge their heat stores whenever there was too much sunshine or the wind was blowing. The test phase begun in 2011 has shown that the concept is very effective.
State-of-the-art storage heating systems that are appropriately set up for the buildings they heat are energy-efficient, inexpensive, and simple. The units charge the heaters at night using inexpensive power, and release the heat again during the day. However, instead of storing off-peak power at night, the heaters could also act as a temporary store for surplus wind and solar power.
According to energy experts, all of the storage heaters in Germany could potentially store 14,000 gigawatt-hours (GWh) of power each year. By contrast, Germany's pumped-storage electrical power stations have a combined storage capacity of around 40 GWh per year.
An important precondition for the use of storage heaters as buffers for green electricity is the availability of a smart control device for the charging process. This is made possible by the Siemens software DEMS (Decentralized Energy Management System), which generates consumption forecasts based on existing user data. The software then uses these forecasts as well as information about the weather, the current electricity prices, and the amount of storage capacity available to decide when a heat store should be charged. The command is transmitted to the control unit via wireless.
The concept has been tested in residential areas containing a variety of storage heating systems: underfloor heating, separate furnaces, and block storage units. What the residents particularly like about the systems is that they heat the apartments evenly.
Whereas a wind-powered heating system is continuously recharged during the day, conventional storage heaters are very warm in the mornings and cool off toward evening. The task now is to make the system attractive for all users of storage heaters by finding ways in which they can benefit from inexpensive wind and solar power prices.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
Open, flexible assembly platform for optical systems
24.01.2017 | Fraunhofer-Institut für Produktionstechnologie IPT
A big nano boost for solar cells
18.01.2017 | Kyoto University and Osaka Gas effort doubles current efficiencies
For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.
According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...
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...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
24.01.2017 | Earth Sciences
24.01.2017 | Life Sciences
24.01.2017 | Physics and Astronomy