Fossil fuel use in an integrated cotton and beef production system

Crops & Soils ◽  
2013 ◽  
Vol 46 (1) ◽  
pp. 39-44
Keyword(s):  
Production System ◽  
Fossil Fuel ◽  
Beef Production ◽  
Fuel Use

Integrating Cotton and Beef Production in the Texas Southern High Plains: II. Fossil Fuel Use

2012 ◽  
Vol 104 (6) ◽  
pp. 1643-1651 ◽  
Author(s):  
C. J. Zilverberg ◽  
V. G. Allen ◽  
C. P. Brown ◽  
P. Green ◽  
P. Johnson ◽  
...  
Keyword(s):  
Fossil Fuel ◽  
High Plains ◽  
Beef Production ◽  
Fuel Use ◽  
Southern High Plains

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.

Optimizing a beef production system using specialized sire and dam lines

2011 ◽  
Vol 91 (3) ◽  
pp. 353-361 ◽  
Author(s):  
G. Tang ◽  
J. Stewart-Smith ◽  
G. Plastow ◽  
S. Moore ◽  
J. Basarab ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Production System ◽  
Western Canada ◽  
Hybrid Vigour ◽  
Beef Production ◽  
Economic Data ◽  
Cattle Breeding ◽  
System 2 ◽  
Terminal Sire ◽  
System 1

Tang, G., Stewart-Smith, J., Plastow, G., Moore, S., Basarab, J., MacNeil, M. D. and Wang, Z. 2011. Optimizing a beef production system using specialized sire and dam lines. Can. J. Anim. Sci. 91: 353–361. Crossbreeding is an effective method for improving the efficiency of production in commercial cow-calf operations. It exploits available heterosis (hybrid vigour) and complementarity between different breeds or populations (lines). Before adopting a crossbreeding system, commercial cattle producers should evaluate available genetic resources and feasible crossbreeding systems, and choose one that is most beneficial for their own environment, resources, and management. This study compared profitability of alternative crossbreeding systems based on Beefbooster beef cattle breeding strains through computer simulation. Biological and economic data were collected from commercial customers of Beefbooster in Montana and western Canada, and breeding records from the database of Beefbooster, Inc. Three maternal strains (M1, M2 and M4) and two specialized paternal strains (M3 and TX), were evaluated with two simulated crossbreeding systems. System 1 uses a rotational cross between M1 and M4 with yearling crossbred heifers bred to M3 sires. System 2 is based on a three-strain rotation of M1, M2 and M4 with yearling crossbred heifers bred to M3 to facilitate ease of calving and crossbred cows bred to a classical terminal sire strain TX. Simulated base profit from system 2 was $29.57 greater ($215.21 vs. $185.64 yr−1 per cow) than from system 1.

An economic case study of entire male grain-fed beef from a north-western Queensland production system

2011 ◽  
Vol 51 (6) ◽  
pp. 570 ◽  
Author(s):  
S. A. Wainewright ◽  
A. J. Parker ◽  
W. E. Holmes ◽  
H. Zerby ◽  
L. A. Fitzpatrick
Keyword(s):  
Production System ◽  
Production Systems ◽  
Economic Losses ◽  
Beef Production ◽  
Market Prices ◽  
System A ◽  
Study Evaluation ◽  
Gross Margins ◽  
North Western

Assessing the differences in gross margins for a north-western Queensland beef-production system was undertaken using herd-budgeting software. The analysis reviewed the viability of producing beef for the domestic market from either a steer or bull production system. A hypothetical herd of 1200 breeders was created for the case study evaluation. An integrated beef production system from breeding to feedlot finishing was found to be less profitable for bull beef production than for steers at the current market prices. Although bull production was more profitable than steer production during the feedlot phase, the production of bulls in this phase failed to compensate for the earlier economic losses in the weaning phase of –AU$24.04 per adult equivalent for bulls. During the feedlot phase, bull production systems had lower break-even sale prices than did steer production systems. In reviewing two pricing scenarios for bulls, it was found that marketing bulls at the same price as steers was the most profitable production system. We conclude that the production of bull beef from a north-western Queensland production system can be profitable only if bulls can be sold without discount relative to steers.

Effects of production and marketing circumstances on economic values for beef production traits

1998 ◽  
Vol 78 (1) ◽  
pp. 47-55 ◽  
Author(s):  
K. R. Koots ◽  
J. P. Gibson
Keyword(s):  
Beef Cattle ◽  
Key Words ◽  
Production System ◽  
Economic Value ◽  
Fixed Costs ◽  
Production Traits ◽  
Beef Production ◽  
Fixed Amount ◽  
Economic Values ◽  
Mature Size

The effect of altering production and marketing circumstances on economic values is quantified for a complete beef production system. Absolute and relative economic values were found to vary substantially with large, but realistic fluctuations in prices and costs. In addition, several examples of different management and different genotypes gave markedly different economic values than in the base situation. Also investigated were the effects of rescaling the enterprise to accommodate three alternative limitations; fixed feed available from pasture, fixed dollars available for feed or fixed amount of beef produced. The effects of rescaling were highly dependent on whether or not fixed costs were accounted for. When fixed costs were ignored (corresponding to a small positive profit) the economic value for mature size decreased while that for fertility increased, but other traits were largely unaffected by rescaling. Overall, production circumstances that reduced survival and fertility yielded the largest changes to economic values. Key words: Economic values, beef cattle, rescaling

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