97 uppsatser · sida 5 av 7
Detta examensarbete utreder lönsamheten i en systemlösning för termiskt akviferenergilager tillsammans med ny VVS-teknisk lösning i fastigheterna kv Hästskon 9 och 12 vid en föreslagen framtida helrenovering. Dessutom utreds förutsättningar för miljöklassning i energi- och …
… to establish 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 …
En litteraturstudie
I dagsläget har världen en stadigt växande befolkning och där igenom en stadigt växande energiförbrukning. Med en växande energiförbrukning har det under de senaste åren uppenbarats diskussioner rörande samhällets hållbarhet och miljöpåverkan. Samtidigt sker det en kontinuerlig …
grundläggande studier
… raw material. Pellets have great benefits compared to the raw material: high energy per volume, good transport and storage properties and homogeneity. Several parameters collaborate in the whole process, which makes it complex. Wood is a heterogeneous material, chemically and …
… affect the quality of logging residues. The study was hosted by VIDA Energy. Logging residues can be processed and transported within different systems. Today the dominant systems are chipping at landing and bulk transportation of logging residues. In these systems the handling …
… bags and bales,estimating dry matter losses as well as losses in metabolizable energy and crude protein that occur during storage. The results show that tower silos, bunker silos and big bags, the systems with the largest amount of forage and a long feed out period involve …
… (DM) content of the fresh crops ranged from 22.2 to 52.8 %, metabolizable energy content from 9.2 to 11.6 MJ/kg DM, crude protein (CP) content from 110 to 190 g/kg DM and water soluble carbohydrate content (WSC) ranged from 38 to 118 g/kg DM. Yeast counts in the fresh crop …
… is the storage form of glucose and is used by the skeletal musculature as energy both for intense and endurance events. The glycogen content in the horse’s middle gluteal muscle is more than 600 mmol/kg dry weight, and almost 400 mmol/kg dry weight in the human’s Vastus …
… and safe cooling. The aim of this master thesis study is to give hints to energy efficient and reliable changes that can be put in place at a low marginal cost depending on the future activities in the area. The suggested changes will be presented to the company Bravida …
… power plants with total yearly generation of 30 TWh. Wind power is an variable energy source that needs to be balanced by other energy sources. In Sweden the Swedish hydropower can be used for balancing a large scale introduction of wind power. The hydropower balancing capacity …
… power plants with total yearly generation of 30 TWh. Wind power is an variable energy source that needs to be balanced by other energy sources. In Sweden the Swedish hydropower can be used for balancing a large scale introduction of wind power. The hydropower balancing capacity …
En numerisk analys av den ringformade koaxiala borrhålsvärmeväxlaren
… is to improve the performance of ground source heat pump systems and thermal energy storages by increasing the energy efficiency of the borehole heat exchangers. For this reason, the annular coaxial borehole heat exchanger (CBHE) has been analyzed. This type of heat exchanger is …
… per kWh for the island.The result of the work is that electricity from solar energy is comparable with electricity produced from oil, if the oil pays for all its external costs, and the potential for pumped hydro storage plants is located. It also requires that consumers of …
There is always a need for more effective ways to store energy in order to reduce the human impact on the environment. One step on the way can be the use of flywheels as kinetic energy storage devices. Low frictional losses are essential for a flywheel to be effective. To …
… targets for the future with ambition to become independent of coal and oil as energy sources. Since 1985, a part of the solution has been import of Danish natural gas. The Danish natural gas fields are now depleting and the closest alternative is natural gas from Germany via …
