As part of the Ecotram research project in Austria, Siemens is now looking for measures that deliver cost savings without requiring any sacrifices in terms of comfort, as the research magazine "Pictures of the Future" reports.
According to the partners participating in the project, it should be possible to reduce energy consumption for HVAC systems by at least ten percent. The objective is to develop a simulation model for the optimization of a tram’s climate control systems.
Climate and ventilation systems for a modern tram consume around 100,000 kilowatt-hours of electricity per year. There are countless possibilities for cutting costs, in areas ranging from insulation to intelligent control systems. Extreme climatic conditions, for example, occur on only few days in the course of a year, but the systems are designed for such conditions and thus are oversized, which results in excessive weight.
Using carbon dioxide sensors, it would be possible to adjust ventilation to the number of passengers in a tram. Another conceivable measure would be to shut off the heating or air conditioning accordingly before coming to a tram stop or tunnel.
In evaluating these savings ideas, the Ecotram researchers first measure the current power consumption of all the HVAC components. This involved subjecting a test tram to all the weather conditions encountered in a typical year — by means of simulated operation in the climatic lab. The tram is currently in everyday service in Vienna, yielding field measurements to supplement the lab data. The data set should reveal which situations and system components account for the most energy use. Savings measures will then be assessed with regard to efficiency and the effects on passenger comfort.
The measurement data also flows into a simulation software that shows the thermal behavior of a tram on a range of different routes. This will enable Siemens to optimize the climate systems, in terms of efficiency and energy use, for trams and for any operation location. Ecotram was launched in March 2010 and has a duration of 18 months; it is funded by Austria’s Climate and Energy Fund. In addition to Siemens, the project participants include the Vienna University of Technology, Vienna’s Wiener Linien public transport company, the Rail Tec Arsenal climatic testing lab, the climate control system manufacturer Vossloh-Kiepe, and the “Schieneninfrastrukturgesellschaft” (rail infrastructure company). The savings measures identified by the project are to be incorporated in a savings-tram prototype.
Dr. Norbert Aschenbrenner | Siemens ResearchNews
Electromagnetic water cloak eliminates drag and wake
12.12.2017 | Duke University
Two holograms in one surface
12.12.2017 | California Institute of Technology
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
14.12.2017 | Health and Medicine
14.12.2017 | Physics and Astronomy
14.12.2017 | Life Sciences