Meistaravarnir í REYST mánudaginn 25. janúar
Fyrirlestrarnir fara allir fram í stofu M1.21 í Nauthólsvík og eru öllum opnir meðan húsrúm leyfir.
25. janúar 2010
kl. 10:15
Student: Jón Örn Jónsson
Place: Nauthólsvík, room M1.21
Thesis title: Biomass gasification in Iceland with the intention of Methanol production - A feasibility study
Supervisors: Kristján Vigfússon og Guðrún Sævarsdóttir
External examiner: Þröstur Olaf Sigurjónsson
Abstract: Gasification is a well known process where carbon based feedstock is partially burned, producing a gaseous mixture that may be used either directly as a fuel, or as feedstock in another process for example for synthetic fuel production. This study focuses evaluating the feasibility of synthetic fuel production in Iceland, based on biomass. The main advantage of the location in Iceland being reasonable prices of renewable electric energy.
kl. 11:15
Student: Houssein Osman Guelleh
Place: Nauthólsvík, room M1.21
Thesis title: Automatization of a geothermal power plant in Djibouti - type of suitable control equipment and degree of automatization for Djibouti
Supervisor: Professor Magnus Þór Jónsson, University of Iceland
Co-supervisors: Gunnar Hjartarson, Reykjavik Energy Invest and Tómas Guðmarsson, Reykjavik Energy
External examiner: Rúnar Unnþórsson, Keilir
kl. 13:00
Student: Martin Fleer
Place: Nauthólsvík, room M1.21
Thesis title: Heat recovery from the exhaust gas of aluminum reduction cells
Supervisors: Guðrún Sævarsdóttir, William Harvey og Halldór Pálsson
External examiner: Jón Hálfdanarson
Abstract: Close to half the total energy input to the Hall-Héroult process leaves the cell as waste heat, which may be harnessed for useful purposes. The heat loss is by several paths of which the exhaust gas carries the second largest energy amount and is the most accessible. An experimental analysis of the exhaust gas was conducted at the 270,000 metric tons per year Nordural aluminum smelter in Iceland. The district heating potential of heat recovery from the exhaust gas was assessed for the local community of Akranes. For this smelter the heat recovery potential is up to 55 MWth, sufficient to supply around 16,000 homes with base load for heat and hot tap water.
The heavy dust content of 0.26-0.38 g dust/kg exhaust gas calls for careful antifouling provisions in the design of the heat exchangers. Particulates were isokinetically sampled in front of the dry scrubber and analyzed for chemical properties and size distribution along with scale buildup on a fouling probe.
kl. 14:00
Student: Indra Suryata
Place: Nauthólsvík, room M1.21
Thesis title: Carbon footprint assessment and its reduction efforts: the case of blue lagoon company
Supervisors: Halldór G. Svavarsson, Sigurbjörn Einarsson og Ása Brynjólfsdóttir
External examiner: Guðrún Sævarsdóttir
Abstract: In general, energy efficiency has shown inconceivable results, and is likely to show more success stories ahead in delivering valuable carbon and cost savings for business. However, the effort to mitigate the climate change will require more fundamental changes to the way that business delivers products and services to the end customer.
This report will describe a practical approach to reduce carbon emissions in the Blue Lagoon Company, by understanding and optimizing emissions across full product supply chain. It is believed that supply chain intervention approach is a new ways of reducing carbon emissions, just as companies have been using supply chain analysis to deliver financial benefits for many years.
The thesis may be divided into two parts, one major part which deals with life cycle analyses of product in respect to green houses gas emission and one minor part which explores the possibilities of CO2 mitigation from Svartsengi geothermal power plant by microalgae which grow naturally at the Blue Lagoon site. A system has been designed for the reduction process and parameters for growth were varied to optimize the process.
