87 uppsatser · sida 5 av 6
… treatment plant in Lidingö, Stockholm. A preceding thesis, where all electricity consumption was mapped, showed that the aeration in the biological treatment is the single largest consumer in the plant, and it is therefore of interest to reduce this cost. The oxygen control …
… transmitted through the windows, internal heat from occupants, lamps and electric appliances inside the building and heat recovered from the ventilation system then have to be sufficient for the heating of the building. This study is of general interest since the property …
… weed area and several alternative methodsare being developed. These include electric current, freezing, microwaves, biological control, etc.The present work is a literature review aiming at describing how a warmer and more humidclimate with a higher CO2 concentration will affect …
miljö- och systemkonsekvenser
… analysis has been performed on the result of simulations of differentheat and electricity production alternatives. The alternatives simulated wereone where Vattenfall Nyköping covers the base load in the joint district heatingsystem and two where the power plant at SSAB …
Energieffektiv fiber produktion
… additives for the separation; the only thing needed is flax, water and electricity. For it to be considered environmentally friendly is has to be efficient, therefore the thesis rapport discuss the discharge efficiency. The result of the fiber separation tests show that Fireball …
… play a vital role in both static and dynamic stability assessment of electric power systems and the foreseeing of voltage collapse. Simulations performed by Svenska Kraftnät (SvK) are mainly done in the specialized voltage collapse predicting software tool, SPICA and the more …
… information about the situation. At the Department of Computer Science and Electrical Engineering of the university, there is an ongoing project which aims to provide the ability of medical examination at distance by employing haptic robots. This thesis describes the process of …
Rötgaskammare för småskalig biogasproduktion
… and medium-sized to smaller farms to become self-sufficientin terms of electricity and heat is great. Farms have a natural stock of digestibleorganic material in form of manure or crops for example, which are constantlyavailable. A reason that only a few small plants exists are …
? En småskalig fältstudie i Namibia
The amount of electricity is limited in Namibia and the large distance between towns and villages complicates the energy supply in the country. Therefore an alternative way to provide access to appropriate energy technologies is needed. The Government of the Republic of Namibia …
Elanvändningen till ventilation har ökat med 40 % sedan 1990 i Sverige. Ventilationen är en miljöbov enligt undersökningar som visar att elanvändningen till ventilationssystemens fläktar kan reduceras. Minskning av elförbrukningen kan t.ex. uppnås genom utbyte av fläktmotor till …
… for power and energy measurement has greatly raised with todays increasing electricity prices and enviromental awareness. In the search for energy efficient solutions, the measurements are more complex due to increasing of non linear components. Harmonics and non sinusoidal …
The Smart Grids development is driven by forces concerning safe electric transmission done in an energy efficient way. Vattenfall Eldistribution AB has a vision to transform their electricity network into Smart Grids. To invest in Smart Grids they have a need to show their …
… None of thesemodifications will affect Vista’s historical presence and the electricity usage can be significantlyreduced as the heating radiators can be removed. The total cost per month with a 15 yearpayback plan is will be 8 000 SEK.
Metoder för att sänka återledningstemperaturen
… this also demands that the time of instalments is set to 25years, and that electrical power can be used at the cost of 0,30kr/kWh. Calculations also shows that it could be quite profitable, If wood chips instead were to be made, with use of the Bio-mass dryer. In a such case the …
… of all major installations (heating, domestic water, ventilation, sanitation, electricity) are reported so that one can in principle start construction of the house. In addition there are calculations done on the building’s energy management. The result is a two stored house …
