577 uppsatser · sida 13 av 39
Att utveckla ett gemensamt gränssnitt
… in the field of energy efficiency is required. This thesis concerns the heating of buildings. The load on district heating is heavy during certain times of the day. This is partly because we are in need of a high power output of the heat in our homes in the winter. The power …
Kan man med hjälp av lagrad värme undvika att de uppstår i betonghus?
… in the field of energy efficiency is required. This thesis concerns the heating of buildings. The load on district heating is heavy during certain times of the day. This is partly because we are in need of a high power output of the heat in our homes in the winter. The power …
… indoor climate. One of the reasons for this was the decision not to install a heat pump between the house and the energy storage. The impact of the omitted heat pump was that the maximum temperature allowed to the fan coils is 11 °C. This low temperature refrigerant could be …
en studie av effekter på växthusgasutsläpp och kostnader
… through anaerobic digestion instead of incinerating the coffee waste in a heating plant. The results are to be presented as different business cases in which different biogas plants are compared with the reference case (heating plant), comparing costs and environmental impacts …
… 1000 new households in Gunsta before year 2030. The required energy for heating houses and water would be distributed via a district heating system, which also includes 200 existing residences. The annual required energy, according to this study, would be 16.2 GWh with a maximal …
En ekonometrisk analys
… with this thesis is to analyse different factors that can explain district heating prices for energy companies in Sweden. We are further interested in examining if the prices is affected by the use of industrial waste heat in their production and the company’s ownership …
Med fokus på fläktvarvtal och köldmedieflöde
… in order to evaluate a new technological measure and focuses generally on a heat pump system to a HWC-washing machine. The client is Asko Appliances AB, a company well known for its environmentally friendly products. The goal of this study was to improve the energy efficiency of …
… upon wish system which is to be established to provide the building with heating and cooling. The consulting firm Umeå Projekt Team has therefore been asked to investigate the possibilities to invest in geothermal- heating and cooling. If the investigation of a geothermal …
En studie med syftet att lösa energibehovet för ett specifikt hus.
… of Scandinavia in a short period of time. This puts demand on what kind of heating system the house can have, since not all places have the geographic advantage of being able to use geothermal or district heating. Therefore the heating system choices will only include those that …
… facades and cellar walls and upgrading the ventilation systems to recover heat. Alternatives for solar electricity and heat generation have also been presented. Results show that both solar heat and electricity can be economically viable. The viability of the solar electricity …
Kartläggning av kylapotential för Vattenfall Värm
The Swedish energy company Vattenfall is currently the owner of the district heatingsystems in Nyköping and Motala. To be able to also offer cooling solutions tocustomers are becoming more and more important. This report describes the resultsof an investigation of the cooling …
… that the different energy systems are functioning properly. District heating is one of these energy systems and many household depend only on district heating to warm up their homes. District heating is dependent on several processes where every step needs to function in order …
… U-value theory be combined with acoustic theories” ” Can the coefficient of heat be affirmed trough an acoustic measurement” The idea for this dissertation begun with a logical idea in mathematical similarity, between the coefficient of heat transmission units and sound …
Ekonomisk och hållbar utveckling
… The real estate company Klövern AB manages 46 properties in Karlstad. Heating is the major cost of the total operating costs of real estate. Rising energy prices increase the need for Klövern AB to improve energy efficiency and to investigate alternative sources of heat. The …
… We monitored two oestrus cycles in four heifers. We found that during standing heat 81 % of the smears were 80-100 % covered with crystals while no smears during the luteal phase had this much crystals. During the luteal phase 74 % of the smears were 0-20 % covered with …
