Engineering topics

Cooney, Greg

Publications and source records attributed to Cooney, Greg.

25 records · Page 2

DOE OSTI2015

NETL Upstream Dashboard Tool Documentation

The goal of the Upstream Tool is to allow the user to customize key parameters specific to their case study or desired scenario, and generate customized results quickly and simply. The results calculated can be allocated, as upstream emissions, to a conversion facility or system of the user’s choice. The combination of the upstream and combustion emissions provide a quick estimate of the overall emissions from an entire energy conversion system.

24 POWER TRANSMISSION AND DISTRIBUTION↗

DOE OSTI2014

Life Cycle Analysis of Natural Gas Extraction and Power Generation

Natural gas is considered a cleaner burning and more flexible alternative to other fossil fuels today. It is used in residential, commercial, industrial, and transportation applications in addition to having an expanding role in power production. However, the primary component of natural gas is methane, which is also a powerful greenhouse gas (GHG). Methane losses from natural gas extraction vary geographically and by extraction technology. This analysis inventories the GHG emissions from extraction, processing, and transmission of natural gas to large end users, and the combustion of that natural gas to produce electricity. In addition to GHG emissions, this analysis inventories other air emissions, water quality, water use, land use, and resource energy metrics.

03 NATURAL GAS↗

DOE OSTI2013

Co-firing Biomass to Reduce the Environmental Footprint of Coal-fired Heat and Power: A Good Strategy? [Slides]

The use of biomass as a feedstock for co-fired electricity generation and heat production is attractive because it offers renewable energy derived from a domestically available feedstock and the potential for reductions in greenhouse gases and other environmental impacts. Drivers for the adoption of biomass-based power and heat include the anticipation of forthcoming GHG regulation, compatibility with existing industrial processes and electricity infrastructure, and other potential State or Federal policies. The overarching objective of this work is to gain a better understanding of the potential human health and environmental outcomes associated with the use of biomass in electricity generation and combined heat and power operations. Co-firing biomass with coal reduces GHG emissions but can increase some human health and ecosystem impacts. The type of biomass and the location where it is produced are important, making it difficult to generalize the results in all impact categories.

09 BIOMASS FUELS↗

DOE OSTI2013

Gate-to-Gate Life Cycle Analysis Model of Enhanced Oil Recovery [Slides]

A gate-to-gate life cycle analysis (LCA) model was created to quantify the environmental impacts of the various processes associated with enhanced oil recovery (EOR). The following unit processes are accounted for in this analysis: injection and recovery, bulk separation and storage, gas separation, supporting processes, and land use. This analysis used an LCA approach for developing data and EOR and gas processing. The energy and material flows for key processes within the gate-to-gate boundaries of the EOR site were calculated. These processes were then compiled in a model that scaled the flows between processes to arrive at an inventory of environmental burdens on a common basis (e.g., 1 barrel of crude produced via EOR).

02 PETROLEUM↗

DOE OSTI2013

Gate-to-Grave Life Cycle Analysis Model of Saline Aquifer Sequestration of Carbon Dioxide [Slides]

A gate-to-grave life cycle analysis (LCA) model was created to quantify the environmental impacts of the various processes associated with saline aquifer sequestration. The following unit processes are accounted for in this analysis: site preparation, well construction, carbon dioxide sequestration operations, site monitoring, brine management, well closure, and land use. This analysis used an LCA approach for developing data and modeling saline aquifer sequestration. The energy and material flows for key processes within the gate-to-grave boundaries of the saline aquifer were calculated. These processes were then compiled in a model that scaled the flows between processes to arrive at an inventory of environmental burdens on a common basis (e.g., 1 tonne of carbon dioxide sequestered).

54 ENVIRONMENTAL SCIENCES↗

DOE OSTI2012

Modeling the Uncertainty of Fischer-Tropsch Jet Fuel Life Cycle Inventories with Monte Carlo Simulation [Slides]

This presentation discusses the use of Monte Carlo simulation to model the uncertainty in a life cycle inventory of the Gasification Systems of coal and biomass. While the inventory is dominated by carbon dioxide emissions from the Adv. Combustion Systems of the fuel, small changes to the feedstocks that are used to make the fuel can make the difference in complying with the Energy Independence and Security Act of 2007.

01 COAL, LIGNITE, AND PEAT↗

DOE OSTI2012

Role of Alternative Energy Sources: Hydropower Technology Assessment

This report discusses the role of hydropower in meeting the energy needs of the United States (U.S.). This includes an analysis of key issues related to hydropower and, where applicable, the modeling of the environmental and cost aspects of hydropower. Conventional hydropower is a significant source of electricity in the U.S. In 2009, conventional hydropower in the United States produced 253 terawatt-hours of electricity, equivalent to 72 percent of total renewable power generation or 6.9 percent of the total power generation in the United States during that year. The capacity of installed hydropower has remained relatively flat since 2000 (near 77 GW). The resource base for very large hydropower sites in the U.S. has already been developed. However, many smaller conventional hydropower sites, such as those with capacities up to 400 MW, are still available along with upgrades to existing facilities. Newer technologies for generating hydropower are emerging. For example, hydrokinetic systems harness the energy that is contained in water as it moves past a fixed point by employing in stream turbines that typically resemble small scale horizontal axis wind turbines. New hydrokinetic turbines are currently being installed along the Mississippi River system.

13 HYDRO ENERGY↗