Wyniki wyszukiwania - BazTech

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Multi-criteria evaluation of technological solutions to improve gas distribution station efficiency

Misevičiūtė Violeta, Tučkus Rapolas, Rogoža Artur

Journal of New Technologies in Environmental Science

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2023

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Vol. 7, nr 4

109--120

EN

Due to the global energy crisis, rising energy demand, and climate change, there must be a way to recover energy that is not used for beneficial purposes, reduce primary and final energy consumption, and reduce emissions. The natural gas sector and its transmission networks, including gas distribution stations (GDSs), are an important component of Lithuania's energy sector. Because the gas pressure is reduced by the use of gas pressure regulators (GPR), the energy potential in high pressure gas is not used effectively, the need to heat natural gas is conducted with the use of natural gas boilers, and additional environmental pollution is caused by the use of GDS. The purpose of the study is to analyse GDSs, identify areas where the energy potential is not being exploited and the environment is polluted, and propose reasonable solutions. After reviewing the literature, alternative technological solutions were selected, including turbine expanders, gas preheating systems that were modified from gas boilers to geothermal heat pumps, solar collectors, and photovoltaic solar cells. To evaluate the potential of technological solutions to improve GDS efficiency and reduce emissions, the proposed solutions are analysed according to the multi-criteria analysis that consider solutions proposed from an energy, economic, and environmental perspective. Based on multi-criteria evaluation, the best alternative technological solution for GDS is recommended.

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Analysis of waste heat recovery in a water treatment plant and the use of this heat in a commercial building

Misevičiūtė Violeta, Čiuprinskas Kęstutis, Rogoža Artur

Journal of New Technologies in Environmental Science

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2022

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Vol. 6, nr 1

8--14

EN

Effective energy use plays a crucial role in the conservation of energy sources. The recovery of waste energy is one of the available energy saving potentials and can be the possibility of ensuring the energy needs of commercial buildings. To date, research on heat recovery from wastewater treatment has focused mainly on the heat potential of wastewater evaluation and technologies to apply this energy. This work examines the possibilities of wastewater heat recovery in the Vilnius wastewater treatment plant and assesses whether the thermal energy demand of the commercial building can be ensured by using the heat of the treated wastewater in a heat pump.

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Sustainable Development Approach in Environmental Engineering Study Programmes

Valentukevičienė Marina, Rynkun Genrika, Misevičiūtė Violeta

Rocznik Ochrona Środowiska

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2019

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Tom 21, cz. 1

69--84

EN

Completed integration of sustainable values into higher education systems has yet to take place in European Union countries, the further efforts should be implied that sustainable development become an integral part of the academic culture. Education for sustainability is still lacking a consistent interdisciplinary conceptual framework all around European countries. Investigated Study programme of Environmental Engineering for the Sustainable Living Environment was carried out at Vilnius Gediminas Technical University (Lithuania) first cycle Bachelor's studies at Faculty of Environmental Engineering. Involvement of students in research and practical activities was encouraged through team work with projects in all related study subjects, providing research practice and through their final thesis. Students feedback reflected high level of satisfaction of their experience in sustainable development topics, reliable engagement and understanding of the opportunities offered to them by Study Programme related to Sustainable Living Environment topics.