Search results for "Natural ga"
showing 7 items of 77 documents
Analysis of the Role of the Latvian Natural Gas Network for the use of Future Energy Systems: Hydrogen from Res
2021
The research has been funded by the Ministry of Economics of the Republic of Latvia, project “Trends, Challenges and Solutions of Latvian Gas Infrastructure Development (LAGAS)”, project No. VPP EM-INFRA-2018/1-0003.
The Response of European Energy Prices to ECB Monetary Policy
2019
To our knowledge, this paper is the first to discuss the response of European energy commodity prices to unexpected monetary policy surprises from the European Central Bank (ECB). Using the Rigobon (2003) identification through heteroscedasticity method, we find a significant and positive response during the crisis period for Brent and coal. Similar results are obtained by other authors for European financial assets in this period. This result reinforces the idea that during this period, financial assets and some commodities positively responded to conventional and unconventional expansionary monetary policy measures, increasing confidence about the survival of the European monetary union. …
Numerical investigation on water exchange of shale samples
2020
Interest in the hydraulic and mechanical characterization of shales has grown in recent years, because of their application in the context of energy geotechnics. In the frame of nuclear waste disposal shales are considered as host formations for the placements of nuclear waste at high depths. In the frame of hydrocarbon production they are considered as unconventional reservoirs, from which extracting natural gas. Understanding how fluids flow through shales is then a key aspect for both fields of application. This paper focuses on the analysis of the transport of water vapour through laboratory samples. After reviewing the balance and flow laws that govern the transport of fluid in unsatur…
La combustione HCCI mediante miscele di gas naturale e benzina: una prima esperienza sperimentale
2016
Si presentano in questo articolo i risultati di una sperimentazione volta a valutare la possibilità di effettuare una combustione HCCI (Homogeneous Charge Compression Ignition) stabile mediante l’impiego di miscele di gas naturale (GN) e benzina. La combustione HCCI ha ottime prerogative di basso impatto ambientale, ma la sua realizzazione pone qualche problema di stabilità al variare delle condizioni di carico richieste al motore: lo studio condotto mostra come l’impiego di miscele di GN e benzina, la cui composizione permette di variarne la resistenza all’autoaccensione, consente di ampliare il campo di funzionamento stabile della combustione HCCI. In the last decade the HCCI combustion h…
A New Simple Function for Combustion and Cyclic Variation Modeling in Supercharged Spark Ignition Engines
2022
Research in the field of Internal Combustion (IC) engines focuses on the drastic reduction of both pollutant and greenhouse gas emissions. A promising alternative to gasoline and diesel fuel is represented by the use of gaseous fuels, above all green hydrogen but also Natural Gas (NG). In previous works, the authors investigated the performance, efficiency, and emissions of a supercharged Spark Ignition (SI) engine fueled with mixtures of gasoline and natural gas; a detailed research involving the combustion process of this kind of fuel mixture has been previously performed and a lot of experimental data have been collected. Combustion modeling is a fundamental tool in the design and optimi…
Theory of storage implications in the European natural gas market
2023
The theory of storage stands that futures prices should be equal to the spot price plus the interest forgone in storing the commodity and the warehousing costs minus the convenience yield on the inventory. In this paper, we test several implications of the theory of storage on the pricing of United Kingdom natural gas futures. We obtain partial evidence for the theory of storage as a complete explanation of the pricing of this futures contract. Explicitly, (i) we obtain evidence to explain convenience yield seasonality with spot price volatility, unexpected demand shocks when supply is tight, inventory variations, and trading activity in the futures markets; (ii) we obtain indirect evidence…
Some aspects of quality and risk management in natural gas measurement
2019
The paper refers to some general aspects regarding the natural gas measurement. In this paper, we try to find methods for checking the quality and risks for gas meters. It is trying to find answers to the question of how we could design and operate a gas meter so that the measurement is as accurate as possible. A process has been proposed to identify, analyze and control the emerging risks. The desirable quality of the measuring instrument requires a rigorous analysis of all aspects that could adversely affect. It also shows the interdependence between quality and risk, one can not exist without the other. Based on these principles, the following papers propose the approach of case studies …