206 uppsatser · sida 4 av 14
… electronics cooling. Graphite is an anisotropic material and has thereof high thermal conductivity in two directions (in-plane) and a relatively low conductivity in the third direction (through thickness). The purpose of this thesis was to investigate if graphite is an adequate …
… of the liquid. Four concepts were generated. And to theoretically estimate the thermal flow in different concept configurations a division of the problem was made, specifically looking at the temperature drop between different parts of the construction as the heat moves from the …
Nytt koncept i vattenkraftgeneratorer
… year instead of one-ten numbers start/stop per year. In order to deal with the thermal forces that arise at every start and stop suppliers began to mount so called sliding joints, which is to take advantage of these forces and maintain the stator shape. This, however, led to …
… in passive house context is unusual. The large window areas result in greater thermal bridges around the windows and greater losses of heat through transmission. As compensation a very low U- value of 0,1 W/m2 ° C was set as a prerequisite from the start ensuring a positive …
… in passive house context is unusual. The large window areas result in greater thermal bridges around the windows and greater losses of heat through transmission. As compensation a very low U- value of 0,1 W/m2 ° C was set as a prerequisite from the start ensuring a positive …
a comparative and kinetic study of thermal decomposition for Norway spruce stump, poplar and fuel tree chips
… biomasses, were improved by torrefaction. The heating rate affects the thermal decomposition process. In addition, SEM analysis indicated that the wood surface structure was broken and destroyed by torrefaction process. Activation energy of untreated and torrefied biomass were …
<em>fokus på fukt- och värmetillstånd</em> <em> i köldbryggor</em>
Det konstrueras i stor utsträckning bristfälliga detaljlösningar på byggnader i dagsläget. Den bärande stommen i konstruktionen prioriteras ofta medan det inte ägnas lika mycket fokus åt att tillgodose de byggnadsfysiska aspekterna. Anledningen till de bristfälliga detaljerna är …
En undersökning om byggandet av vinterträdgårdar
… parts of the facade need to be isolated and the construction needs to prevent thermal bridges. In this essay we will start by looking at the shape of the conservatory. Due to the façade consists of glass the conservatory will need to have a good ratio between the area and the …
… the indoor climate. This report studies four schools regarding air quality and thermal environment. A survey was made at the schools as well as measurements of carbon dioxide, dampness, thermal climate and, as an indicator for the furniture’s capability to collect dust, shelf …
… change the U-value of an exterior wall construction when airflow occurs in the thermal insulation layer. The concept of windproofness is in the current situation a word in the building sector which is rarely used. Instead, the word airproofness with the assumption that it is the …
<em>-Fokus på inomhusklimatet och energianvändning</em>
… future use of energy that has been set by the authority. At the same time the thermal conditions cannot be influenced by the necessary changes that must be made. The study highlights the possibility to improve the thermal conditions and the use of energy by a built- in system …
Hållbara Isoleringsmöjligheter förVandrarhemmet på Grinda
… directly correlate to the decrease in heating oil consumed. With the help of thermal imagining three measures have been proposed: - Improve the insulation in the attic - Improve the insulation in the floor of the restaurant - Improve the insulation of the window frames. energy …
… normal wear in a farrowing pen. Concrete flooring is assumed to have a higher thermally conductive effect then rubber which can affect the sow’s chance to cool down. Therefore the temperature in the farrowing compartment was measured to see if there was a correlation between the …
… energy demands. Three important components to reach the demands are U-values, thermal bridges and air tightness. Different constructions have been tested in these three areas by calculations with Isolerguiden Bygg 06, Isover Energi 3 and literature studies. The results of the …
… in Tekniska verken’s energy system. The investigated technology is borehole thermal energy storage using two different kinds of borehole heat exchangers; u-pipe and annular coaxial heat exchanger. To evaluate how Tekniska verken’s energy system changes through integration of a …
