Keresés

Keresési eredmények

• Trends in Greenhouse Gas Emissions and Renewable Energy Policies in the EU and USA, with Special Emphasis on the Transportation Sector

  219-231

  T. Kiss Judit

  Bellér Gábor

  Árpád István

  Kocsis Dénes

  Megtekintések száma:

  266

  The aim of this work is to review recent trends in the field of greenhouse gas (GHG) emissions and renewable energy policies of the European Union and the United States of America. During the last few decades, there was a significant shift within the political attitude towards these fields, therefore important changes were realized in the electricity production and the climate policy. In the present paper, we discuss the current situation focusing on the transportation segment.

• Aktuális kihívások a közúti járművek CO2-kibocsátására vonatkozó szabályozások területén

  738-742

  Kocsis Dénes

  Bellér Gábor

  T. Kiss Judit

  Árpád István

  Megtekintések száma:

  219

  Napjainkban a klímaváltozással szemben folytatott küzdelem részeként az üvegházhatású gázok kibocsátásával kapcsolatos szabályozások egyre nagyobb teret nyernek. Munkánk során a közúti járművek szén-dioxid-kibocsátására vonatkozó európai uniós szabályozásra fókuszálunk, különös tekintettel a célértékek változására. Áttekintjük továbbá a CO2 emisszió mérésére vonatkozó mérési metódusok terén bekövetkező változásokat, mint a szabályozások egyik lényeges alappontjait.

• Municipal Geothermal Systems: Evaluation of Three Hungarian Cases

  81-93

  Szolga Krisztián

  Árpád István W.

  Kocsis Dénes

  Megtekintések száma:

  119

  Geothermal energy holds great potential for a sustainable future, as it is a clean and weather-independent form of energy. In addition to energy production, it can also serve the population of a region through direct use. In this paper, three municipal geothermal systems (Szarvas, Nagyszénás, Békéscsaba) in the same Hungarian region which have been recently installed or expanded are presented and analysed. Here, the direct usage of geothermal energy for heating purposes is a very important issue. The three systems show several differences and to some extent face different challenges in the various phases of the projects. Particular attention has been paid to engineering solutions to the problems that arise. The challenges, such as technical difficulties during installation, maintenance difficulties, or problems arising during operation are introduced. The strengths, weaknesses, opportunities, and threats of similar geothermal systems were summarized, based on the relevant literature. These points were evaluated by their appearance and characteristics in the examined systems. This study aims to provide insights, based on recently gained experiences, into geothermal projects, thus providing feedback and practical information for researchers and practitioners.