Because blending hydrogen with natural gas can allow the mixture to burn leaner, reducing the emission of nitrogen oxide (NOx), hydrogen blended with natural gas (HCNG) is a viable alternative to pure fossil fuels because of the effective reduction…
The climate benefits of switching from more carbon-intensive fossil fuels to natural gas may be reduced or delayed by supply chain emissions of methane, the primary constituent of natural gas and a powerful greenhouse gas with short-term climate…
Driven by global environmental emission issues, energy access in remote communities, and tighter requirements for system resilience and reliability, electricity production is shifting from a centralized paradigm to a decentralized one. In this…
Fleets of electric vehicles will likely shift electricity demand, and the effect of upstream charging emissions will come from generation sources that are dispatched in response. This study proposes a multi-stage charging and discharging problem to…
Within the context of the energy transition, there are several alternatives under study for the gradual replacement of diesel fuel based urban transport vehicles. This paper proposes an answer to the following question: Which bus technology and…
We show how the concept of demurrage - a core principle of commercial shipping contracts - is at odds with efficient and environmentally friendly vessel operation and represents barriers to improving energy efficiency in maritime transportation.…
This study presents a comprehensive environmental impact and economic assessment of the use of natural gas in potentially cleaner locomotives. An integrated direct methane-solid oxide fuel cell powering system is proposed and analyzed using energy…
The existing cogeneration systems on offshore petroleum platforms face clashing targets intrinsic to offshore applications, namely, weight, area, cost and efficiency. Moreover, the prolonged offdesign operating conditions during their lifetime…
The present work investigates the effect of two-step fuel injection on a four-cylinder engine which has been altered from port injection to direct injection. Hydrogen enriched compressed natural gas (HCNG) blend has been utilized as a substitute in…
The addition of natural gas (NG) with diesel fuel is an attempt to increase the combustion efficiency of the diesel engine and to reduce nitrogen-based emissions in this investigation. A three-dimensional computational study has been carried out on…
Natural gas/diesel dual-fuel combustion is one of the most promising low-temperature combustion strategies. However, unstable combustion processes under low engine loads restrain the development of this strategy. To overcome this problem, a…
Gas well liquification is a problematic process whereby liquids collect in the wellbore and near wellbore reservoir resulting in production impedance in aging gas wells. Removal of these liquids is traditionally performed through human operated…
The oil and gas industry is increasingly seeking operational improvements to reduce both costs and emissions while improving resilience against electric grid outages. This study describes techno-economic analysis of opportunities for distributed…
This paper examines the effect of market organization on efficiency and emissions in wholesale electricity markets. Taking advantage of Texas' transition from a decentralized bilateral trading market to a centralized auction market, we find that…
Fossil fuel power plants emit large amounts of CO2 emissions into the atmosphere every year. Two strategies can be effectively applied to reduce these emissions, namely, substituting a portion of fossil fuel with biomass for power generation and…
Petroleum and petrochemical wastewaters are characterized by toxic organic pollutants, hydrocarbons, heavy metals, sulfur compounds, and refractory compounds. These pollutants are a potential threat to the environment if discharged without proper…
The UK has ambitious decarbonisation, climate change mitigation and energy transition goals. The upstream petroleum sector in the UK shares in these goals, as evidenced by its North Sea Transition Deal and as set out in its sector ‘Roadmap 2035’ for…
In this paper, both renewable hydrogen production and blending with natural gas for the existing distribution pipelines are studied through a unique trigeneration systems development, analysis, and assessment. A comparison with various conventional…
The fuel economy of natural gas (NG) spark ignition (SI) engine could improve significantly when using high exhaust gas recirculation (EGR) dilution. However, the combustion processes become instability and even occur misfire at higher EGR rate. In…
The existing cogeneration systems on offshore petroleum platforms face clashing targets intrinsic to offshore applications, namely, weight, area, cost and efficiency. Moreover, the prolonged offdesign operating conditions during their lifetime…
The present work investigates the effect of two-step fuel injection on a four-cylinder engine which has been altered from port injection to direct injection. Hydrogen enriched compressed natural gas (HCNG) blend has been utilized as a substitute in…
Within the context of the energy transition, there are several alternatives under study for the gradual replacement of diesel fuel based urban transport vehicles. This paper proposes an answer to the following question: Which bus technology and…
The increase in the compression ratio reduces the fuel consumption and improves the performance. These effects of compression ratio could be observed in all of the engines, such as compression or spark ignition engines. Moreover, due to the…
The addition of natural gas (NG) with diesel fuel is an attempt to increase the combustion efficiency of the diesel engine and to reduce nitrogen-based emissions in this investigation. A three-dimensional computational study has been carried out on…
The number of demonstration projects with fuel cell buses has been increasing worldwide. The goal of this paper is to analyse prospects and barriers for fuel cell buses focusing on their economic-, technical-, and environmental performance. Our…
Storing excess wind and solar energy in the form of hydrogen injected into the natural gas grid is one of the main ingredients of the energy transition. This hydrogen injection has an impact on emissions and the performance of user equipment. The…
The oil and gas sector produces a substantial volume of emissions mainly generated from flaring, which adds to the total energy loss in oil and gas plants and significantly impacts air quality. Therefore, reducing and recovering flare gas is…
Natural gas/diesel dual-fuel combustion is one of the most promising low-temperature combustion strategies. However, unstable combustion processes under low engine loads restrain the development of this strategy. To overcome this problem, a…
China is now the largest oil importer in the world. In 2018, the external oil dependence of China exceeded 70%. Restrain the oil consumption is important for China's energy security and environmental protection. The electric vehicle is considered to…
Crude oil production activities and associated petroleum gas (APG) flaring are responsible for significant air polluting and greenhouse gas (GHG) emissions and have negative effects on the environment and climate. In Russia, one of the world's major…
A notable research gap in the Indonesian policy environment is the lack of discussion about its energy planning. This article addresses the problem by adopting a political economy approach to investigate the country's mix and security of energy…
A comprehensive analysis of energy requirements and emissions associated with electric vehicles, ranging from mining and making the rare-earth magnets required in electric motor to assembling the Li-ion battery, including charging and regular running…
We quantify the impacts of renewable deployment on carbon emissions and natural gas supply in the Saudi power sector. A capacity expansion model, which simultaneously considers generation and transmission builds covering a planning horizon up to…
Port-hinterland transport is a freight transport mode that links ports and inland destinations and contributes to a large portion of the total CO2 emissions from the entire port-related logistic chain. Infrastructure development is conducive to…
China is now the largest oil importer in the world. In 2018, the external oil dependence of China exceeded 70%. Restrain the oil consumption is important for China's energy security and environmental protection. The electric vehicle is considered to…
Crude oil production activities and associated petroleum gas (APG) flaring are responsible for significant air polluting and greenhouse gas (GHG) emissions and have negative effects on the environment and climate. In Russia, one of the world's major…
A comprehensive analysis of energy requirements and emissions associated with electric vehicles, ranging from mining and making the rare-earth magnets required in electric motor to assembling the Li-ion battery, including charging and regular running…
The article analyses the transportation sector in India with respect to the changing energy mix. A key objective is to contribute to the policy debate on electrification of the transportation sector. The article attempts to serve multiple…