On April 19th starting at 12 doctoral student Mart Hovi will be defending his thesis „Multiple stage storage strategy for the increasing of renewable fraction of the consumer."
In this work, various solutions for storing renewable assets were studied. By renewable resources, the author understands sources that are based on natural resources that are constantly renewable and can be used in unlimited quantities without harming the environment or depleting resources. In a narrower sense, they are treated as sources of energy.
The work focused on multistage storing in cases where receipts and consumption are of the same order of magnitude. The aim was to raise the share of the property used on the spot in relation to what was given away and received from other sources.
To summarize:
• The combination of different renewable storage devices increases the likelihood that the share of on-site consumption of the collected energy or other assets can be significantly increased.
• When storing renewables, it is important that the system preserver is always ready to receive the flow of tops of the production schedule. For example, its increase in the considered model up to 6 kW·h leads to an increase in the self-consumption factor by 5%.
• Priority is given to the supply of non-displaced customers, which will be covered by the battery in the event of an energy deficit. The lack of a battery leads to a self-consumption factor below the value of 32%.
• When storing stored property, it is necessary to maintain it. For example, in the case of rainwater, its regular relocation between storage tanks should be carried out, during which additional filtration will also take place. An analogy of energy storage devices to this would be conversion, but also inevitable self-discharge.
The transport, storage and use of non-renewables of an incidental nature is more complex and costly than the use of non-renewable energy sources and other assets. However, this is compensated by local use, taking into account the values of the environment and the community. The use of a pre-storage device in series with a liquid storage allows different values of the session peak cutting factor to significantly increase the self-consumption of renewable energy.
Supervisors are prof. Andres Annuk and prof. Emmanuel Karapidakis, opponents are Levon Gevorkov (PhD, Institut de Recerca en Energia de Catalunya (IREC)), Arvi Hamburg (PhD, Tallinn University of Technology) and Ainars Galins (Dr, Latvia University of Life Sciences and Tecnologies). Abstract is available in Library of Estonian University of Life Sciences DSpace archivelink opens in new page.
The defence of the doctoral thesis will take place in the room A202 F. R. Kreutzwaldi 56 and via Web https://videosild.emu.ee/b/mar-8nl-6yf-pw5link opens in new page.
