Sökning: "energi teknik"

Visar resultat 1 - 5 av 657 avhandlingar innehållade orden energi teknik.

1. 1. Study of heat release rates of mining vehicles in underground hard rock mines

   Författare :Rickard Hansen; Haukur Ingason; Nicholas Dembsey; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy- and Environmental Engineering; energi- och miljöteknik;

   Sammanfattning : A unique study on fire safety in hard rock underground mines with focus on heat release rates of mining vehicles is presented. A literature inventory was conducted with respect to fires in underground hard rock mines, which revealed that the most common fire cause in underground mines was flammable liquid sprayed onto hot surface and the most common fire object was a vehicle. LÄS MER

3. 2. Evaluation of a thermally driven heat pump for solar heating and cooling applications

   Författare :Corey Blackman; Chris Bales; Eva Thorin; Victoria Martin; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; solar energy; solar heating and cooling; sorption integrated; Reesbe företagsforskarskola; Reesbe företagsforskarskola; Energy- and Environmental Engineering;

   Sammanfattning : Exploiting solar energy technology for both heating and cooling purposes has the potential of meeting an appreciable portion of the energy demand in buildings throughout the year. By developing an integrated, multi-purpose solar energy system, that can operate all twelve months of the year, a high utilisation factor can be achieved which translates to more economical systems. LÄS MER

4. 3. Effects of handling on animals welfare during transport and marketing

   Författare :Sorri Fufa Bulitta; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Animals can be transported either by trekking or by vehicle, during which they are subjected to different types and levels of stressor. Some key factors affecting animal welfare during handling and transport are mixing of unfamiliar animals, handling procedures, driving methods, stocking density, journey length, vehicle design, animal standing orientation, loading and unloading facilities and transport by walking. LÄS MER

5. 4. Nitrous oxide and methane emissions from storage and land application of organic fertilisers : with the focus on sewage sludge

   Författare :Agnes Willén; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Organic fertiliser handling contributes to greenhouse gas emissions. Through storage and field experiments, this thesis examined strategies to reduce emissions of nitrous oxide (N2O) and methane (CH4) from storage and after land application of cattle slurry (CS) and sewage sludge (SS). LÄS MER

7. 5. Energi som kunskapsområde : Om praktik och diskurser i skolan

   Författare :Per Gyberg; Lars Ingelstam; Kerstin Bergqvist; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Discourse; knowledge; practice; meaning formation; points of correlation; inclusion and exclusion; meaning relationships; school; energy; supply; user; science; civilisation-critic; Energi; studier; undervisning; grundskolan; gymnasieskolan; Sverige; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Sammanfattning : This study concerns how energy is treated as an area of knowledge in the Swedish school. Energy is encountered in traditional subjects such as history, physics and social studies. Energy also has another entry due to its constant relevance in the world outside school, thereby obligating school to address and discuss energy within its curriculum. LÄS MER