577 uppsatser · sida 11 av 39
En ändrad styrning av framtemperaturen
… possible control strategy to minimize flow fluctuations in Uppsala’s district heating system. High variations in flow rate may lead to complications caused by hydraulic constraints in the district heating system. These complications, such as inadequate pressure and temperature …
… products to use to produce energy as well as to store that energy. To produce heat and electricity to the house I decided to use a wind turbine and a solar water heater. The most difficult part of designing a house that is energy independent is that the produced energy must be …
… is very energy efficient in the sense that it would not need a conventional heating system are discussed. Solar radiation transmitted through the windows, internal heat from occupants, lamps and electric appliances inside the building and heat recovered from the ventilation …
… of Borås has in the long run, a required need to look after the current heating devices (the gas production plant) in sewage treatment plant, called Gässlösa. The practical work of the examination is about, trying to find a better way to take care of the current heat recovery …
… these technologies in a decision matrix. We have chosen two areas, combined heat and power (CHP) and upgrading biogas. In this report there are short reviews of heat engines, gas turbines, fuel cells, PSA, scrubbers, cryogenics, internal methane enrichment, ecologic lung …
utveckling av en beräkningsmodell med simuleringsverktyget IPSEpro
Heat and power stations are often in need of optimizations. A simulation model is a tool for findingways to optimize the plant. The scope of this diploma work is to develop a simulation model ofBoiler 5 at Mälarenergi AB. Boiler 5 is a circulated fluidized bed boiler that was …
… to use in PCB carriers. The carriers support and cool the PCB by diverting the heat dissipation from the PCB components to the edge. The focus of the thesis work was on redesign of a high power card carrier that was near its maximum capacity for heat transport. The work was …
The Rya power plant in Borås produces district heating, district cooling and electricity. The plant is owned by Borås Energi och Miljö AB and is run by Dalkia Facility Management AB.In order to get the best heat exchange from the district hot water a pair of twin pumps and a …
… for castration of the healthy bitch, castration before or after the first heat and the castration method most commonly used of ovariohysterectomy and ovariectomy. The summary is based on a questionnaire answered by personnel from 20 veterinary clinics and animal hospitals evenly …
… and discuss the possibilities for AI in Sweden. Male and female fertility, heat detection, semen handling and insemination techniques in sheep are described. Advantages and disadvantages of AI are discussed. In order to achieve genetic progress it is important with well planned …
… various technologies. By using high-efficient insulation and smart windows, heat transmission losses and thus the heat demand can be reduced. Increased solar irradiation through the windows during the winter months also contributes to a reduction in need of purchased energy …
The rising demand for electricity and heat raises a big challange for the society and engineers. Many products have been introduced to the market to supply more energy to the energy systems. Absolicon AB is a Swedish company that develops and markets a combined heat and power …
… kinds of cooling solutions and it does not take in account the large amount of heat produced in a data center. This development and the limitations of the existing index calls for an improved way of measuring energy efficiency in data centers. This thesis suggests a changed …
… Combustion engines are in need of a cooling system that reduces the heat developed during the combustion. In general, two main types of cooling systems are employed; either air cooling, where the outside of the cylinder is exposed to a flow of the surrounding air, ore water …
… as enrichment before and after spore selection, enrichment time, alcohol and heat chock for spore selection and if the samples had to be centrifuged or not before cultivation on agar plates. Enrichment in broth before spore selection was better than after. Heat and alcohol chock …
