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Analysis of heat transfer coefficient in silica nanofluids with water as base fluid under transitional flow
(2016)
The effect of Reynolds number variation in a vertical double pipe counterflow heat exchanger due to the changes in viscosity can cause the change in flow regime, for instance, when heats up and cools down, it can convert ...
Sustainability of protein production by bioreactor processes using wind and solar power as energy sources
(2016)
Food production account for significant share of global environmental impacts. Impacts are global warming, fresh water use, land use and some non-renewable substance consumption like phosphorous fertilizers. Because of ...
Sulfaattisellutehtaan hajukaasujen keräily ja käsittely
(2016)
Tämän diplomityön tavoitteena on selvittää sulfaattisellutehtaan hajukaasujen syntyminen, tyypilliset keräilykohteet, keräilyjärjestelmät sekä hajukaasujen käsittely. Työn aihepiiri on ajankohtainen ja tärkeä uuden ...
A development and application of a one-dimensional model for a sorbent-enhanced CFB gasifier
(2017)
Alterations to the climate caused by increasing concentrations of greenhouse gases in the atmosphere are a growing concern. The use of fossil fuels is one of the main contributors in global carbon dioxide emissions. To ...
Techno-Economic Assessment of LNG and Diesel Production and Global Trading Based on Hybrid PV-Wind Power Plants and PtG, GtL and PtL Technologies
(2016)
With growing demand for liquefied natural gas (LNG) and liquid transportation fuels, and concerns about climate change and causes of greenhouse gas emissions, this master’s thesis introduces a new value chain design for ...
Simulation model of wind turbine gearbox and lubrication system
(2015)
As increasing efficiency of a wind turbine gearbox, more power can be transferred from rotor blades to generator and less power is used to cause wear and heating in the gearbox. By using a simulation model, behavior of the ...
Modelling of biomass combustion chemistry to investigate gas phase alkali sulfate formation
(2017)
This study is about the chemistry of biomass combustion, and modelling of combustion inside a boiler. Also, some implication are done as to detailed chemistry of the combustion. It explains the necessity of biomass combustion ...
Biomassakattilan simulointi
(2015)
Tässä diplomityössä mallinnetaan Apros-simulointiohjelmistolla kylläistä höyryä tuottava KPA Uniconin toimittama Biograte-kattilalaitos. Työ on rajattu käsittelemään vesihöyrypiiri syöttövesisäiliöstä prosessiin lähtevään ...
Toimistorakennuksen energiatehokas jäähdytys
(2017)
Rakennukset kuluttavat paljon energiaa ja kiinnostus niiden energiatehokkuutta kohtaan on viime vuosina noussut merkittävästi. Energiaa kuluu esimerkiksi rakennusten jäähdytykseen. Suomessa ja Euroopassa jäähdytysmarkkinat ...
Municipal solid waste scenarios for Ulan-Ude City (Russia)
(2017)
The municipal solid waste management system in Ulan-Ude city is faced with significant environmental issues according to fulfillment of landfills and dramatically increasing of greenhouse gases (GHG) in a region. In these ...