mandag 6. juni 2016

Grønn pris for revolusjonerende generator

Av Atle Abelsen, Teknomedia

Pål Keim Olsen har mottatt Grønn Fases Energipris 2016. Hans innovasjonsbragd er en generator som kan øke energiutbyttet fra havvindturbiner med opptil fire prosent.

– Årets vinner har vist en uvanlig kreativitet og innovasjon, sier avdelingsdirektør Rune Volla i Forskningsrådet om prisvinnerens bidrag.  Det kom i år inn 17 forslag fra kandidatene på master- og doktorgradsnivå, og Pål Keim Olsens revolusjonerende høyspenningsgenerator for offshore vind var i en klasse for seg.

Christer Heen Skotland mottar Grønn Fases Energipris 2016 på vegne av vinneren, Pål Keim Olsen.
Avdelingsdirektør Rune Volla i Forskningsrådet deler ut prisen.
Prisvinneren Pål Keim Olsen var på reise og kunne ikke møte personlig.               Foto: Atle Abelsen

Olsen har allerede patentert konseptet. Hans kollega Christer Heen Skotland, som i Olsens fravær mottok prisen på vegne av ham, forteller at samarbeidet mellom industrien og forskningen på NTNU har vært av avgjørende betydning for ham.

– Pål forsikrer at premiepengene vil gå inn i de budsjettene som har med videre samarbeid mellom industri og forskning å gjøre, sier han.

Juryens begrunnelse

Programkoordinator Ane Brunvoll i ENERGIX deltok i juryen, og forteller at de ble imponerte av hvor stor effekt vinnerforslaget kan ha dersom det blir realisert. 

onsdag 25. februar 2015

Bringing environmental knowledge into action!

By Lina H. Ingeborgrud(, PhD Candidate at Center for Technology and Society Department of interdiciplinary studies of culture, NTNU

Exploring “Cities of the future” and local transportation systems through environmental knowledge management 



In BREV (bringing environmental knowledge into action) we study environmental knowledge management in Norwegian municipalities. This means how municipal employees learn and acquire environmental knowledge, how this knowledge is shared and made use of and how it is brought into plans and strategies. First we study a national initiative called “Cities of the future”. The purpose is to examine what kind of input to local environmental knowledge management that may be produced through national policy-making. Second we will take a sector approach to investigate how environmental knowledge management is performed in the transportation sector, which we see as a particularly important and pertinent area of concern with respect to sustainability. We have chosen Bergen and Trondheim and their transportation programs, respectively “Bergensprogrammet” and “Miljøpakken”.


Background and objectives

Our point of departure is that the enactment of environmental knowledge raises a fairly wide-ranging set of problems.

fredag 16. januar 2015

Crafting climate transitions from below

By Roger Andre Søraa, PhD candidate at Center for Technology and Society Department of Interdisciplinary Studies of Culture, NTNU.

The role of craftspeople in climate-friendly buildings

There are about 2.4 million private-residences in Norway. Altogether, Norwegian buildings account for approximately 40% of all land-energy usage. Building and renovating to more climate-friendly houses, for example passive-houses and low-energy houses, can greatly lower the national energy usage. Many interesting projects have been made and are underway, like Powerhouse Brattøra, shown below. 

But who will do the actual building, and what is their role? 

torsdag 27. november 2014

The new combination of solar cells and supercapacitors

By PhD students attending the
Norwegian Research School in Renewable Energy 2014, NORREN


The world’s climate is subject to change through the emission of greenhouse gases such as CO2, which has increased rapidly over the past decades. The share of renewable energy sources in the world’s power supply need to increase in order to reduce CO2-emissions and global warming. Many of the renewable energy sources are intermittent sources – meaning that it is not possible to predict when they will produce electricity. For instance the power production of a solar cell depends on the weather conditions. If it is completely cloudy there is not much production, but if the day is a partly clouded one the production rate can vary a lot. This is illustrated by Figure 1 (a), showing the power production of a solar cell on a partly cloudy day. An energy storage system is needed to store energy during excess production, and to deliver energy in times of energy deficit. While lithium-ion and nickel metal hybrid batteries can store large amounts of energy (up to 180 Wh/kg), they fall short during rapid changes in production and load. Supercapacitors can complement the battery in a hybridized energy storage system for solar cells, such as to supply the necessary high power when needed and hence increase the battery lifetime (Glavin et al., 2008), or they can smooth the power output from solar cells such as to reduce the voltage peaks and stabilize the voltage to the grid (Figure 1 (b)). Simulations done by Björn Veit and Thomas Hempel in our group work also proves that supercapacitors works very well in responding to the solar cell power output as shown in Figure 1 (c)).

Figure 1. (a) Power production from a solar cell on a partly cloudy day, (b) power smoothing (red curve) by using supercapacitors, and (c) the simulation scheme using supercapacitors integrated with solar cell module.

mandag 27. oktober 2014

Hydrogen Cell Cars and Electric Cars

By Hammad Majeed, NTNU [writer], Usman (NTNU), Lizhen (NTNU), Shahla Gondal, NTNU, Naveed Asif, NTNU, and Idan Liebes
at NorRen summer school 2014

Energy plays a key role in world economy. International energy agency (IEA, 2010a) believes that, if the policies and plans by various governments with respect to energy usage will be implemented than the world primary energy demands will increase by 36% in between 2010 and 2035.

Transportation plays a vital role in carbon dioxide (CO2) emissions, as 33 % of the energy demands come from this sector (Eurostat, 2011).  In order to reduce CO2 emissions and to meet the challenge a strategy for energy efficiency plus renewable energy along with CCS should be implemented. Hydrogen and electric vehicles are one of the key points towards clean environment and to accomplish energy demands.

Social Aspects of Hydrogen Cell vs Electric Cars

This blog doesn’t deals with technical evaluation of these cars instead it depicts people thinking about these technologies. An online survey with in Norway was done along with person to person interaction in Asker city center (Norway) in order to extract information on realistic basis to understand what are the future potential of these technologies, how people will adopt it in to their daily lives, how much they want to spend on these types of cars, whether they have knowhow about these technologies are not.
Total of 86 people were asked about their opinions in the form of questionnaire. The results are explained in graphical method as;

Figure 1: People profile on the basis of gender and age and No. of cars they own

tirsdag 21. oktober 2014

Li-ion Batteries: On the verge of electrification of the car traffic

Group work at NorRen Summer School 2014
By Ahmet Oguz Tezel et al.

Given the rising concerns about the green-house-gas evolution and global warming, the shift from coal power to renewable energy production systems, such as wind and solar, and the shift from internal combustion engines (ICE) to electric vehicles (EV) should be considered necessity (Figure 1). Realization of these transitions, perhaps not widely known by public, relies on the development of advance energy storage systems. Li-ion batteries, which store the energy by mean of electrochemical activity, represent the forefront technology that responds to the demand on energy storage systems. Although receives competition from fuel cells, particularly in relation to EV applications, Li-ion batteries are predicted to dominate the market in the near future since fuel cells are not mature enough a technology and subject to further improvements to go with.

The battery technology has been continuously developed over the last decades, nearing to meeting the technological and practical requirements, although many challenges are yet to be overcome. In this project, we aim at evaluating the feasibility of the application of state of the art Li-ion batteries to EVs, exclusively to cars as the principle mode of passenger transport, by their practical performances in meeting the public needs. We prefer to avoid evaluating the car use as a whole and instead choose to speak in terms of its divisions ( i.e. CO2/km, driving range/day and average speed ). This approach enables us to identify the prevailing mode of car use and suggest a battery solution to the point. 

onsdag 8. oktober 2014

Supercapacitors for peak shifting over short durations in PV-systems

Xuemei Cheng, Wesley Dose, Thomas Hempel, Øyvind Storesund Hetland, Kine Solbakken and Björn Veit at NorRen Summer School 2014


In recent years there has been a growing emphasis on harnessing energy from renewable sources. Photovoltaic (PV) cells have demonstrated great potential as a cheap and reliable source of clean, renewable energy, and PV production facilities are now being deployed at a high pace globally. The output from a PV production system naturally varies with the cycles of the sun (e.g., day and night), requiring other sources of energy to be available when sunlight is scarce or absent. There is another, less well known, issue in PV systems however: the variability of PV output even while the sun shining, due to second- and minute- resolution disturbances in the light absorbed by the solar panel. These fluctuations are usually due to clouds, but any moving object that occludes the path of sunlight will contribute. As more and more small scale PV systems are connected to the local grid, these fluctuations may prove a problem through grid voltage instabilities and temporary grid overproduction due to sharp local peaks in production. A possible remedy to these issues could be to somehow store energy when the system experiences a short spike in production, and then release this energy again when a drop in production occurs. This process would result in a smoother output from the PV system, with no, or minimal, loss in overall production.

How could we implement such an ‘energy buffer’ in a real-life application? The most common alternatives are batteries and capacitors. A battery can offer a high energy capacity (Wh) but low power (acceptance/delivery time, W), while the capacitor offers very high power, but can only store a small amount of energy. Another device has recently joined the market however: the electrochemical capacitor (also known as supercapacitors or ultracapacitors). The supercapacitor fills the intermediate region between batteries and capacitors. It could be considered as a high-capacity capacitor, and it shows considerable promise in storing seconds worth of energy from PV output, even from larger PV systems, while also providing the high rate energy storage/release required.