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

Brain poetry

In the latest research result of the month section, we interview PhD student Jukka Toivanen about his recent work on brain poetry in the Discovery group led by professor Hannu Toivonen. How can humans and machines be creative together?

Kjell Lemström to be new Head of Studies

Since Jaakko Kurhila left the department to head the Open University, we had to find a new university lecturer to act as head of studies in short order. We received a total of 28 applications. Out of these, and after a preliminary qualification round, evaluations, interviews, and a department council hearing, Kjell Lemström (KL) was elected for the post. He started working as the department's Head of Studies on 2 March 2015, so the Head of the department (JP) conducted the following induction interview that very week.

This is by no means the first time Kjell has been employed by the department. He defended his thesis on ‘String Matching Techniques for Music Retrieval’ in 2000, and has held numerous teaching and research positions both before and after that, until he transferred to the Laurea University of Applied Sciences in 2011 (luckily, that was only temporary).

Head of Studies Jaakko Kurhila to head Open University

The Head of Studies at the department, University Lecturer Jaakko Kurhila, has been elected to the post of director of the Open University at the University of Helsinki. It was a tough race: all in all, 39 applicants sought the post, some of them through the Mercuri Urval headhunting process. After a consultant evaluation, interviews, and aptitude assessments, the preparatory committee for the post, the steering committee for the Open University, and the rector of the university came to a unanimous decision to select Jaakko, and the contract is already being drawn up.

Being selected from this prestigious group of applicants, and after such a thorough process, is indisputable proof of the qualifications of Jaakko and the high esteem the academic community has for him. The department extends its warmest congratulations to Jaakko for this career development and is proud of the success of its protégé.

Bridging the Gap Between Research and Standardization

In the fourth research result of the month, we report a joint work between the UH NODES group and the Cambridge NetOS group, lead by Prof. Sasu Tarkoma and Prof. Jon Crowcroft, respectively. Their work recently received the best paper award "Best of CCR" from ACM SIGCOMM.