3. PhD Theses
Recent Submissions
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Solar and wind energy seasonal heat storage systems for residential buildings in Nordic climate
(Eesti Maaülikool, 2020)In this doctoral thesis are handled possibilities, how to increase renewable energy on-site usage, which is produced from wind and sun. In the Nordic climate, the main share of energy consumption in buildings is the need ... -
Second-generation bioethanol production: strategies for sidestreams valorisation in a sustainable circular economy
(Eesti Maaülikool, 2020)Due to the increase of the energy production mainly from non–renewable energy sources, there is a need for alternative sources of energy. Second–generation biofuel production, using lignocellulosic biomass as a feedstock, ... -
Applicability of low-cost electromyographs in ergonomic assessment
(Eesti Maaülikool, 2020)Every year a considerable amount of gross domestic product in several countries is lost due to work-related musculoskeletal disorders (WMSDs). Thus, one of the goals of ergonomics is to prevent WMSDs. A body of knowledge ... -
Post-harvest Processing Technology for Cultivated Berries
(Eesti Maaülikool, 2018)Blueberries belong to a group of horticultural products that have one of greatest growth potentials in Estonia. Modern post-harvesting processing lines handle various operations, but, one of these is the processing of ... -
Surface Quality Improvement of Hard-to-Cut Materials With Modified Cutting Tool at Finishing Turning
(Eesti Maaülikool, 2016)One important challenge in engineering is the setting of dimensions and tolerances of the machine elements’ surfaces, which work together. The shape and position tolerances may increase the occurrence of failures and can ... -
Design of Distributed Energetics Solution Based on the Increasing of Direct Consumption of Electricity Generated from Wind and Solar Energy
(Eesti Maaülikool, 2016)This doctoral thesis presents six original papers, which are used to demonstrate the design possibilities for increasing the local renewable energy consumption of buildings equipped with renewable energy production ... -
On Using Mathcad Software for Modelling, Visualization and Simulation in Mechanics
(2015)Learning and research are becoming increasingly more computerbased, which is supported by both the development of computing technology and better results in studying, teaching and research into engineering problems. ... -
Factors affecting biochemical composition of lignocellulosic biomass and its effect on selection of pretreatment method and on bioethanol production potential
(Eesti Maaülikool, 2015)European Union has set a target of reaching 20% share of renewable energy in the overall energy production for the year 2020. This also includes that 10% of fuel used in transportation sector has to be produced from ... -
Fuel Supply System of Piston Engine Working on Liquid Biofuels
(Eesti Maaülikool, 2014)Most commonly, standard biofuels, e.g. bioethanol E85, biodiesel, biogas, are used. The use of nonstandard biofuels in engines is not widely spread since their physicochemical properties bring about several issues in ... -
Characteristics of Bioethanol Fuel Obtained From LignocelluloseI Biomass in Internal Combustion Reciprocating Engines With Spark- and Compressioignition
(Eesti Maaülikool, 2013)It can be claimed about the use of bioethanol produced on the basis of lignocellulose raw material under Estonian conditions that: 1. The amount of fuel produced from one hectare of natural grasslands is seven times ... -
The characterization and modelling of the dynamic behavior of hard-to-machine alloys
(Eesti Maaülikool, 2012)Because of their excellent mechanical, physical and chemical properties even at elevated temperature, titanium and nickel-base alloys are the materials suitable for the production of several parts and components in ... -
Possibilities for balancing wind generators´output power
(Eesti Maaülikool, 2012)The importance of renewable energy is growing. More and more wind parks, CHP-s and biogas stations are being erected and connected to the electrical grid. Of the range of different renewable resources, the proportion ... -
Compatibility of Energy Consumption with the Capacity of Wind Generators
(Eesti Maaülikool, 2011)Taastuvenergia osatahtsus Eestis peab erinevate arengukavade alusel kasvama. Erinevatest taastuvenergia liikidest on koige kiiremini kasvanud tuule osatahtsus ja toodetud energia hulk. Tuulegeneraatorite valjundvoimsus ... -
Indoor Climate and Animal Keeping Technologies Valuation by Factors of Working Environment of Pigsties
(Eesti Maaülikool, 2010)Uurimistöö eesmärgiks oli sigalate töökeskkonna mitmepara-meetrilise uurimise kaudu täiendada andmeid, mis võimaldavad hinnata ja valida sisekliima, tööajakulu ja töö raskusastme tegurite kaudu otstarbekamaid loomapidamisviise ... -
The Dependence on the Structure of Machinery and the Locality of Plots on Cereal Farm Work Activities
(Eesti Maaülikool, 2009)Põllumees teab, et mida suurem on tootmismaht ehk haritava maa pindala või loomade arv, seda paremini on võimalik oma tootmisvahendeid koormata ja seega vähendada püsikulude osakaalu toodangu omahinnas. Lisaks annab ... -
Computer-aided Optimization of Pig Farming Technologies and Machinery Use
(Eesti Maaülikool, 2007)Väitekirja kirjanduse analüüsi osas on kirjeldatud seakasvatustehnoloogiaid, seakasvatusega kaasnevaid keskonnakaitse nõudeid, “parimat võimalikku tehnikat” (PVT) seakasvatuses ning on esitatud ülevaade seakasvatuses ...
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