| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Search the digital library catalog Help

Query: search in
search in
search in
search in
* old and bologna study programme

Options:
  Reset


1 - 6 / 6
First pagePrevious page1Next pageLast page
1.
Public support of solar electricity and its impact on households - prosumers
Jarmila Zimmermannová, Adam Pawliczek, Petr Čermák, 2018, original scientific article

Abstract: Background and Purpose: Currently, the idea of households - prosumers is broadly discussed in public governments, mainly in connection with both the energy security issues and the environmental issues. Therefore, the main goal of this paper is to present new agent model of household - prosumer and to compare two scenarios – “off grid household” and “on grid household”. The additional goal is to evaluate the impact of public support of solar electricity on the economic efficiency of household – prosumer projects (systems). Design/Methodology/Approach: The model is structured as a micro-level agent model, representing one household – prosumer. The model has the following general characteristics: one household with own electricity generation (photovoltaic panels), battery and in case of “on grid household” also connection to the grid. The main goal of the agent is to cover electricity consumption in household with minimal costs. The agent model of prosumer is tested and validated, using the empirical data. Results: The highest level of subsidy has significant impact on the economic indicators of selected scenarios. It causes lower investment costs at the beginning of the project and consequently shorter payback period (3-4 years earlier), positive cumulative cash flow, net present value and IRR in earlier period (approximately 5-10 years earlier, depending on the scenario). Conclusion: We can recommend to the government to continue with current system of subsidies, since it contributes to better economic indicators of particular solar electricity projects. On the other hand, the level of subsidy should be at least the same as in current year 2017, for the purposes of representing the significant part of the investment costs. Low level of subsidy has negligible impact on the economic indicators of households – prosumers projects. The developed agent model is suitable for the evaluation of economic impact of public support on households – prosumers.
Keywords: renewable electricity, photovoltaics, prosumers, households, public support, agent model, energy model
Published: 07.05.2018; Views: 701; Downloads: 288
.pdf Full text (2,04 MB)
This document has many files! More...

2.
Analysis of the spanish electricity market and proposals for future development
Ester Getino, Emilio García, Klemen Deželak, published scientific conference contribution

Abstract: Nowadays the electricity is found in any daily activity, while a state can not develop its economic and social potential without a consolidated electricity system. In sense of the liberalized electrical systems, the figure of an electric market becomes fundamental. This paper shows an overview of the Spanish electricity market, involving its problems and future objectives. Spain as a member of the European Union faces the demands proposed by the European Commission. The European challenge is not an individual challenge for individual member but requires the cooperation of all member states, moving towards an energetically integrated European Union.
Keywords: electricity market, liberalization, Spain, generation, transportation, distribution
Published: 10.10.2017; Views: 564; Downloads: 215
.pdf Full text (380,59 KB)

3.
The value of "vehicle to grid" integration into warehouse logistics management
Matjaž Knez, Péter Bajor, 2011, original scientific article

Abstract: Wide-scale application photovoltaic energy sources for electricity production purposes is quite a challenge in Slovenia. The nature of sun is unpredictable, and the Slovenian National Grid has no significant storage opportunities today - if the V2G (vehicle-to-grid) solutions could be competitive in the near future we could prepare for the special circumstances: the batteries of electrically driven forklifts could provide attractive storage functions for renewable electricity storage. The following paper presents an overview of some "environmental background approaches" to show the complexity of this innovative system and to show the value of V2G technology and its application in warehouse logistics.
Keywords: renewable electricity, photovoltaics, warehouse logistics management, v2G
Published: 10.07.2015; Views: 734; Downloads: 98
.pdf Full text (986,14 KB)
This document has many files! More...

4.
5.
Green logistics - a solar warehouse concept
Matjaž Knez, Péter Bajor, Sebastijan Seme, 2011, original scientific article

Abstract: Transportation and logistics are responsible for climate change as they produce greenhouse gases and contribute to the increasing share of fossil fuels, such as oil, in global energy consumption. Supplying the required energy for the transport and logistics sector in an environment-friendly way (based on electric or hydrogen fuels) is one of the main challenges for mankind. Material handling processes have a significant energy demand in warehouse operations, and the application of electricity-driven vehicles and equipment is widely accepted. With the effective use of available green electricity sources - like photovoltaic and wind energy - in the warehouse, we could provide energy for these operations. This article, based on laboratory data, describes a solar-warehouse concept and analyzes the critical parameters, such as energy demand of processes and vehicles, the characteristics of consumption and production, the alternative solutions of electricity storage and fast-charging.
Keywords: green logistics, greenhouse gasses, electricity, solar energy
Published: 05.06.2012; Views: 1660; Downloads: 44
URL Link to full text

6.
Influence of water scale on thermal flow losses of domestic appliances
Danijela Urbancl, Darko Goričanec, 2007, original scientific article

Abstract: Research results of how the precipitated water scale on heaters of small domestic appliances influences the consumption of electricity are presented. It shows that the majority of water scale samples are composed of aragonite, calcite and dolomite and that those components have an extraordinary low thermal conductivity. Also, the results show that at 2 mm thick deposit, depending on the chemical composition of water scale, the thermal flow is reduced for 10% to 40%; consequently, the consumption of electricity significantly increases.
Keywords: electricity, heat transfer, heat flow, heat exchanger, water scale
Published: 31.05.2012; Views: 1564; Downloads: 50
URL Link to full text

Search done in 0.11 sec.
Back to top
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica