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English summary of key articles in Xergi 4-99 

 

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By Steward Clark

Competence building in partnership with NTNU
HVDC cable insulation
Our laboratory services
CO2 heat pumps for houses
Better power production planning
Optic fibres help to measure climatic loads on high-voltage overhead lines
Waste combustion
Energy transport in the 21st Century
Photo: Roger Bjerkan   More interest in dewatering processes
    Powel Data - a growing spin off 
    Doctorate in heat transfer

Competence building in partnership with NTNU (Norwegian edition)
One of the key features of SINTEF Energy Research is our well-qualified staff. Many already hold doctorates and we encourage others to do the same. Such a degree documents academic standing, initiative and the capacity for independent work. A doctoral degree also links us even closer to the Norwegian University of Science and Technology (NTNU) and international contacts. This issue of Xergi gives some examples of recent doctoral work focusing upon their practical applications.

Our close, integrated cooperation with NTNU is one of our competitive advantages. We are confident that competence building in partnership with NTNU is vital in helping to further professionalize and update our organization so that we can maintain our leading position within energy technology R&D in Scandinavia.


HVDC cable insulation (Norwegian edition)
SINTEF Energy Research has many years of experience in R&D on submarine cables for High Voltage Direct Current (HVDC). As early as the 1970s, we worked in a large-scale project which later resulted in the Skagerrak cables between Norway and Denmark. One project related to the EFFEKT programme is now breaking new ground, and once again, Alcatel Kabel Norge is the main contractor. In this project Gunnar Evenset has recently completed a doctorate which shows that it is possible to increase today's voltage and transmission capacity. His dr. ing. thesis is entitled: "Cavitation as a Precursor to Breakdown
of Mass-Impregnated HVDC Cables".


Our laboratory services (Norwegian edition)
In cooperation with the Norwegian University of Science and Technology, SINTEF Energy Research has about
7 000 m2 of laboratories which contain advanced equipment for testing, education and research. The main objective of these laboratories is to help produce valuable research results for business and industry.


CO2 heat pumps for houses (Norwegian edition)
One of SINTEF Energy Research's long-term strategies within flexible heating solutions is using CO2 as a working medium in heat pumps for domestic heating. A full-scale pilot unit has now been installed in a large semi-detached house in Trondheim. CO2 has many favourable advantages for such applications. It is non-toxic, non-flammable and has good thermophysical characteristics.


Better power production planning (Norwegian edition)
Power production is a sector that has to generate optimal earnings from every single production unit. SINTEF Energy Research has been working for many years on the development of powerful analytic tools that can now help its users meet the challenges of the deregulated power market. This project is part of the Research Council's EFFEKT programme, and will further improve production planning tools like the EMPS and EOPS models.


Optic fibres help to measure climatic loads on high-voltage overhead lines (Norwegian edition)
A new type of integrated optical fibre
has now made it possible to make direct measurements of climatic loads on high voltage transmission lines. The concept was tested on a 160 m span in the grid. After the test it was concluded that there are many applications for this new measurement technique. The project is funded by the Research Council of Norway.


Waste combustion (Norwegian edition)
Waste combustion has been a subject for research work in Trondheim over the years. An initiative has now been started to find environmentally friendly waste combustion units where efficient energy utilization from waste is an important factor in the total economy. The technology that has been developed in this area in Norway has provided combustion emission data that are well within the specifications required for new combustion plants.


Energy transport in the 21st Century (Norwegian edition)
SINTEF Energy Research arranged a seminar in December 1999 to present the preliminary results of an in-house project entitled " Energy transport in the 21st century". A flexible methodology has been developed to analyse means of transporting various forms of energy.

The new methodology will provide an efficient means of assessing which technical/ economic solutions are optimal for the transfer and distribution of energy.


More interest in dewatering processes (Norwegian edition)
The Dewatering Laboratory in Trondheim held its annual conference in October
1999 and attracted almost 50 participants from research institutions, industry and academia. The interest in this event meant that it had to be extended to 2 days.

There was also a distinguished panel and two of the foreign experts who held lectures were Professor Arun Mujumdar, MaGill University, Canada and Dr Iva Filkova from Process Engineering, Czech Republic.


Powel Data – a growing spin off (Norwegian edition)
Powel Data AS was started in 1996
as a 100 %-owed subsidiary of EFI. The company now has other owners as well, and also has its own subsidiaries in Norway and abroad. Over 100 people work in Powel Data and turnover in 1999 is estimated to be close to NOK 80 million.


Doctorate in heat transfer (Norwegian edition)
Ola Jonassen has received the degree of
dr. ing. for his thesis entitled: Heat transfer to immersed horizontal dryers. The doctoral work investigated ways of improving the dewatering capacity of heat pump fluidized bed dryers. The tests were based on the actual conditions for dryers and the pilot dryer found that the uptake to the drying air was increased by up to four times when two drying chambers were used with immersed heat exchangers.


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