59 uppsatser · sida 3 av 4
… 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 …
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 …
… 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 …
… 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 …
… 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 …
Problem area Alfa Laval is a world leading company in the heat transfers area and have the vision to continue to be that in the future as well. The company has a lot of press lines where the utilization is high and also has started to become old. Prognosis shows that there is an …
… ” into small drops. The drops are rapidly cooled in a water bath where all the heat energy from the liquid metal is transferred into the water. The granulation is often performed with great metal flows, normally 1-4 tonnes of metal is granulated per minute. The energy that is …
The purpose of this thesis for Sapa Heat Transfer is to examine a furnace in which aluminium is pre-heated before hot rolling. The project is modeled in a computer environment in which the air flow in the furnace and the heat transfer to the aluminium solids are included. The …
… those measures that save least energy. Installation of ventilation system with heat recovery (FTX) and exhaust air heat pump (FVP) do not prove to be profitable. The option that provides the biggest profit while saving most energy is a combination consisting of charging for hot …
… residential and service. Of the 40% of the energy consumption was 60% used for heating and domestic hot water. A report from year 2012 shows that one reason why the heating volume is so great could be due to underestimating on the energy consumption for the heating in the …
… drive (VFD). The disadvantage of decreasing the frequency is that the heat losses in the engine increases and the engine shaftpower decreases. The result when running the Wobble plate pump with 25 Hz electric frequency is a maximum flow of about 42 l/min. The maximal measured …
… water use in paper and pulpmills and consequently save energy through reduced heating of water. The thesis's maintask is to evaluate whether a water purification plant (microflotation plant) forpurification of process water in PM 53 is profitable. The microflotation plant …
… been adapted and implemented in the turbine model. The model describes how the flow of water and the turbine torque are affected by the deviations from the optimal combination curve of the wicket gate and runner blade angles, based on a hydropower unit with available test data …
This report contains results of our study at CTC in Ljungby. CTC produces heating products such as boilers, heat pumps and additional products to their heating systems. The purpose of the report is to make a proposal how CTC will supply their new production line for heat pumps …
