Exactum rooftop greenhouse experiment grows herbs

A greenhouse has been built on the roof of Exactum in a collaboration by the Department of Computer Science and the Fifth Dimension science project. To begin with, sedum grass is growing on the roof and tomatoes, courgettes and chilli in the greenhouse. The greenhouse is 9.4 square metres large.

The motivation for the computer scientists is the estimation that 2% of the greenhouse gas emissions caused by humans are emitted by equipment using information technology. This is more than e.g. air traffic produces globally. To the scientists, this is reason enough to look into how to decrease the impact of information technology on global warming.

The facilities of the rooftop greenhouse were finished in 2011, and in the spring, the success of different utility plants has been tested. The scientists were driven by the idea that the greenhouse could be maintained with the excess heat from the servers.

Now, crops like tomatoes, rosemary, courgettes and various kinds of chilli are grown in Kumpula. A similar project is carried out in Paul Brenner’s Green Cloud super-computer project at the University of Notre Dame in Indiana, USA.

Scientists have been up on the Exactum roof before. Before the greenhouse was installed, they were testing the cold resistance of computers in tents in winter. Some of the same servers are still outside after surviving for three winters. So far, the only problems have been observed with one type of fan. The majority of the computers have been able to survive the long-term outdoor cooling perfectly well. The results are very encouraging, since the cooling of the data centres stands for 20-40% of their power consumption, sometimes even more in older data centres.

The greenhouse on the roof is surrounded by an experimental green belt. It is a part of the Fifth Dimension project and World Design Capital Helsinki 2012. The purpose of the green belt is to discover the best solution for roof gardens in Finland.

Professor Jussi Kangasharju and researcher Mikko Pervilä are the Computer Science Department members of the project Heating up the fifth dimension.

See how the plants grow and the research progresses >>

Text: Minna Meriläinen-Tenhu
Photo: Mikko Pervilä
Translation: Marina Kurtén
 

Created date

14.08.2012 - 16:44

Top research

The research at the department combines theory with interaction with the application fields in a well-balanced whole. Both the department and Basic Research Unit in the Helsinki Institute for Information Technology were awarded the highest grade in the research review carried out in 2005. Algodan (Algorithmic Data Analysis) is a national Finnish Academy centre of excellence 2008-2013.

Innovative teaching

The Finnish Higher Education Council re-elected the department as a national centre of excellence in higher education, this time for the years 2010-2012. The status of centre of excellence is a significant achievement. It was only conferred on 10 units in Finland this time, and the department was one of two units that were selected for their second period.

The Department of Computer Science opens it's doors in the virtual world

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Starting this Friday, you can visit the Department of Computer Science virtually. An adapted facsimile of the Exactum building and the Kumpula Science Library based on their ground plans has been made for the Second Life virtual world. In Second Life, anyone can visit the premises of the Department of Computer Science.

Biomine received funding from Tekes

The Biomine project has been granted EUR 110.000 by Tekes, the Finnish Funding Agency for Technology and Innovation. The project, headed by Prof. Hannu Toivonen, is among the very first ones to receive funding for preparation of commercialization, from a new instrument just launched by Tekes.