In part of the “Am Ackermannbogen” housing estate near the Munich Olympic Park, a solar thermal system supplies almost half the heat required for space and domestic hot water heating.
Together with a large-scale heat storage tank and heat pump, around 2,800 square metres of collector surface area supply four large apartment buildings and eight town houses. All buildings meet the requirements of the latest German Energy Saving Ordinance. Since it began operation in 2007, the solar project has been scientifically monitored.
The new BINE-Projektinfo brochure “Summer sun against the winter cold” (02/2011) presents the local solar heating concept realised there as well as the operating experiences and measurement values from two heating periods.
The system is operated by Munich's municipal utility company, Stadtwerke München. In constructing the seasonal heat storage tank, they opted for an underground bunker made of prestressed and precast concrete units. This storage tank contains 5.7 million litres of water, is clad on the inside with stainless steel and is thermally insulated on its outer, earth-facing surface. If, during the course of the year, the storage temperature is no longer sufficient for direct use, an absorption heat pump optimises the remaining residual heat. A particularly difficult task was to develop a stratified charging system for such a large plant. This component is still being optimised.
To date, the solar thermal project has achieved an efficiency of 45%, a return temperature of 30 °C and enables the direct use of solar thermal heat into December. In future it is planned to further optimise the storage concept to achieve an efficiency of 50%. The BINE-Projektinfo brochure “Summer sun against winter cold” (02/2011), which can be obtained free of charge from the BINE Information Service at FIZ Karlsruhe, is available online at www.bine.info or by calling +49 228 92379-0.
About FIZ Karlsruhe
FIZ Karlsruhe – Leibniz Institute for Information Infrastructure is a not-for-profit organization with the public mission to make sci-tech information from all over the world publicly available and to provide related services in order to support the national and international transfer of knowledge and the promotion of innovation.Our business areas:
FIZ Karlsruhe is a member of the Leibniz Association (WGL) which consists of 87 German research and infrastructure institutions.
Rüdiger Mack | idw
New Generation of Cleaning Tools for CSP Plants Reduces the Water Consumption
09.11.2018 | Steinbeis-Europa-Zentrum
memory-steel - a new material for the strengthening of buildings
23.10.2018 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences