scholarly journals Evaluation of Biodiesel Fuels to Reduce Fossil Fuel Use in Corps of Engineers Floating Plant Operations

2016 ◽  
Author(s):  
Michael Tubman ◽  
Timothy Welp ◽  
Ryan Immel ◽  
Robert Leitch
Keyword(s):  
Fossil Fuel ◽  
Fuel Use ◽  
Corps Of Engineers ◽  
Plant Operations ◽  
Biodiesel Fuels ◽  
Floating Plant

scholarly journals Functional Properties of Neem Oil as Potential Feedstock for Biodiesel Production

2015 ◽  
Vol 34 ◽  
pp. 7-14
Author(s):  
Prithviraj Bhandare ◽  
G.R. Naik
Keyword(s):  
Seed Oil ◽  
Fossil Fuel ◽  
Raw Material ◽  
Biodiesel Production ◽  
Seed Oils ◽  
Neem Oil ◽  
Chemical Parameters ◽  
Saponification Value ◽  
Neem Seed Oil ◽  
Biodiesel Fuels

Fossil fuel resources are decreasing daily while biodiesel fuels are attracting increasing attention worldwide as blending components or direct replacements for diesel fuel in vehicle engines. In this experiment the seed oils of 30 Neem (Azadirachta indica. A. juss) biotypes were screened and evaluated for their physio-chemical parameters for oil content, biodiesel yield, density, viscosity, iodine value , free fatty acid and saponification value. Hence the neem seed oil tested in this current study could be the potential sources of raw material for biodiesel production.

Quantifying the Uncertainty of Energy Creation from Solar and Wind Farms in Different Locations

2016 ◽  
Vol 5 (2) ◽  
pp. 13-46 ◽  
Author(s):  
Roy Nersesian ◽  
Kenneth David Strang
Keyword(s):  
Large Scale ◽  
Wind Farm ◽  
Fossil Fuel ◽  
Wind Farms ◽  
System Stability ◽  
Novel Approach ◽  
Plant Operations ◽  
Generating Capacity ◽  
Demand Fluctuations ◽  
Battery Technology

This paper illustrates how to assess the risk associated with solar and wind farm energy creation by identifying the critical operational factors and then developing multivariate models. The study reveals that a dependence on solar and wind could place consumers at risk of interrupted service given the state of contemporary battery technology. Large scale electricity storage is not currently available which places a contingency risk on electricity generating capacity. More so, maintaining system stability where solar and wind play a significant role in generating electricity is a growing challenge facing utility operators. Therefore, the authors demonstrate how to build a model that quantifies uncertainty by matching uncontrollable supply to uncontrollable demand where a gravity battery may be installed as a buffer. This novel approach generalizes to fossil fuel and nuclear plant operations because demand fluctuations could be managed by storing surplus energy into a gravity battery to meet high peak periods.

Impacts of a 32-billion-gallon bioenergy landscape on land and fossil fuel use in the US

Nature Energy ◽  
2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Tara W. Hudiburg ◽  
WeiWei Wang ◽  
Madhu Khanna ◽  
Stephen P. Long ◽  
Puneet Dwivedi ◽  
...  
Keyword(s):  
Fossil Fuel ◽  
Fuel Use ◽  
The Us

scholarly journals Design and Integration of High Temperature Latent Heat Thermal Energy Storage for High Power Levels

2018 ◽  
Author(s):  
Maike Johnson ◽  
Bernd Hachmann ◽  
Andreas J. Dengel ◽  
Michael Fiß ◽  
Matthias Hempel ◽  
...  
Keyword(s):  
Energy Storage ◽  
Latent Heat ◽  
Thermal Energy ◽  
High Power ◽  
Thermal Energy Storage ◽  
Fossil Fuel ◽  
Thermal Power ◽  
Fuel Use ◽  
Storage Unit ◽  
Detailed Design

A latent heat thermal energy storage unit is being integrated into a heat- and power cogeneration plant in Saarland, Germany. This storage unit system will act as an intermediate backup to a heat recovery steam generator and gas turbine and is therefore situated in parallel to this unit, also between the feedwater pumps and the steam main. The steam required is superheated, with a nominal thermal power of 6 MW. The storage unit needs to provide steam for at least 15 minutes, resulting in a minimum capacity of 1.5 MWh. Integration of this storage unit will increase efficiency and decrease fossil fuel use by reducing the use of a conventional backup boiler, while maintaining the steam supply to the customer. The detailed design and a partial build of the storage unit has to-date been successfully concluded, as well as system design and build. Hot and cold commissioning of the storage unit, including filling of the storage unit, will commence following the completion of the storage unit. With the integration of this storage unit, fossil fuel use will be reduced in this power plant. Additionally, the production of superheated steam at a high power level in a latent heat storage unit and a comparison with simulation tools will be possible. This project includes the design, build, commissioning and testing of the storage unit. The paper discusses the detailed design of the storage and system, including the simulations of the system integration.

scholarly journals Sun's heat could cut fossil-fuel use

Nature ◽  
2015 ◽  
Vol 523 (7561) ◽  
pp. 386-387
Keyword(s):  
Fossil Fuel ◽  
Fuel Use

Pulp and Paper Mill Steady State Analysis for Carbon Neutral Integration of a Small Modular Reactor

2020 ◽  
Author(s):  
Elizabeth K. Worsham ◽  
Stephen D. Terry
Keyword(s):  
Steady State ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
Pulp And Paper ◽  
State Model ◽  
Manufacturing Processes ◽  
Fuel Use ◽  
Steady State Analysis ◽  
Lime Kilns ◽  
Steady State Model

Abstract Small modular reactors (SMRs) are small-scale reactor designs (< 300 MWe), generally planned for deployment as multi-module nuclear power plants. Due to their small size, SMR modules could be manufactured in a factory and deployed to a site via truck or rail for installation and fueling. SMRs are being evaluated for their ability to provide both power and steam, such that they could be a viable replacement for fossil fuels. SMRs have been considered for coupling to manufacturing processes in addition to being connected to the grid, allowing them to follow the net grid demand in a “load following” operational mode during times of high renewable generation. Alternately, SMRs could be used to replace cogeneration and combined-cycle processes at manufacturing plants which utilize natural gas and other fossil fuels. Idaho National Laboratory (INL) is studying the use of SMRs for large-scale manufacturing processes that require both electricity and steam. The current study examines the integration of a SMR with two mid-size pulp and paper mills in the southeastern United States. The study consists of three parts: steady-state analysis of the mill, elimination of fossil fuel use in the lime kilns, and economic analysis of the modified plant operations. A steady-state model of each mill is developed in Aspen HYSIS based on real data from the operation of each mill. The steady-state model is then modified to include the SMR while maintaining production steam quality and making as few changes to existing equipment as possible. This model gives an estimate of the minimum requirements for SMR output, as well as the change in generation by existing boilers and turbines. With an overall picture of the new plant operation and determining the number of SMR modules required, further changes are suggested to minimize or completely eliminate fossil fuel use from the plant. Apart from steam generation, the largest consumer of fossil fuels at the plant is typically the lime kilns. Conversion of the lime kilns from fossil fuel combustion to electric heating is the most feasible solution to eliminate fossil fuels. This study finds that electric lime kilns are economical when the plant has a surplus This study presents a feasible example of using an SMR as a substitute for fossil fuel cogeneration. If this approach were expanded across the manufacturing industry, it would have a significant impact on environmental emissions and air quality.

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