A combined heat and power plant with regenerative closed-cycle gas turbine is considered. The heat transfer losses, irreversible adiabatic losses and irreversible pressure drop losses are considered in the plant. The expressions of dimensionless profit rate and exergy efficiency are gained. The...

According to the official document of Romania's energy policy for the period 2020-2030, with a view to 2050, the main objective of the strategy is to increase the energy sector in conditions of sustainability by setting targets for reducing greenhouse gas emissions and promoting renewable...

In recent years, bioeconomy strategies have been implemented and adapted internationally. In the bioeconomy, materials are to a certain extent circular by nature. However, biomaterials may also be used in a rather linear way. Lately, a transition towards a circular economy, a more restorative...

The Renewable Energy Directive (RED II) by the European Union (EU) provides an updated framework for the use of renewable energy in the EU transport sector until 2030, and bans the use of biofuels with a high risk of causing indirect land‐use change in high carbon stock areas (high ILUC‐risk...

This study describes the relationship between GHG emissions and a set of economics and environmental variables in the energy sector of the 27 Brazilian states, during the period 2010 to 2020. The system Generalized Moments Method (system GMM) was used to verify the influence, in particular, of...

This paper summarizes the main findings of the results in the literature on the role of ethanol in reducing retail gasoline prices in the United States. We provide a comprehensive overview of the key results and methodologies used to obtain them. The paper documents the growing research interest...

We analyze the relationships within the liquid fuels system and its associated supply chain using innovative network filtering methods, namely the Minimum Spanning Tree and Triangulated Maximally Filtered Graph. Our findings reveal that biofuels form robust connections with their feedstocks that...

Vorliegender Bericht gibt einen Überblick über den Stand und die Projektionen der globalen Landnutzung sowie der Nahrungs- und Futtermittelversorgung bis 2050, wobei die Frage im Mittelpunkt steht, ob zum einen die wachsende Bevölkerung ernährt werden kann und zum anderen, welche...

Dieser Aufsatz argumentiert, dass die deutsche EE-Förderung auf einer falschen Konzeption beruht. Sie hat sich vorwiegend befehlswirtschaftlicher Methoden bedient und eine Staatsschuldillusion zu erzeugen versucht. Es verwundert infolgedessen nicht, dass enorme Kosten entstanden sind,...

In this paper we use the CGE model DART to assess the economic impacts and optimality of different aspects of the EU climate package. A special focus is placed on the 10% biofuel target in the EU. In particular we analyze the development in the biofuel sectors, the effects on agricultural...