Economic Analysis of Agricultural Tractors in South Korea: Classified Based on Energy Efficiency Grades

2017 ◽  
Vol 33 (5) ◽  
pp. 667-677 ◽  
Author(s):  
C S Shin ◽  
K U Kim ◽  
Patrick Kwon
Keyword(s):  
Energy Efficiency ◽  
Economic Analysis ◽  
South Korea ◽  
Grade Level ◽  
Economic Value ◽  
Cost Savings ◽  
Efficiency Index ◽  
Fuel Savings ◽  
Agricultural Tractors ◽  
The Relationship

Abstract. This study involved performing an economic analysis on agricultural tractors classified based on energy efficiency grades using the energy efficiency index. Specifically, 131 models of agricultural tractors commonly used between 2006 and 2010 in South Korea were classified into five categories. The relationship between energy efficiency and economic value was evaluated by a numerical method, and a method of predicting cost and fuel savings based on energy efficiency was developed. Grades of energy efficiency labeled from 1–5 were assumed in order to calculate annual fuel and cost savings. The results indicated that the use of the proposed method resulted in fuel and cost savings given an upgrade from the 5th level of energy efficiency to the 1st level and indicated subsequent improvements with each grade level. This method was applied to data from the year 2008, and total fuel and cost savings were obtained. This indicated that fuel and cost savings in an arbitrary year could be predicted using the proposed method and assuming data from an arbitrary year. Keywords: Agricultural tractors, Economic analysis, Energy efficiency classification grade, Energy efficiency index.

Guidelines for Right-Turn Treatments at Unsignalized Intersections and Driveways on Rural Highways

1997 ◽  
Vol 1579 (1) ◽  
pp. 63-72
Author(s):  
Tanweer Hasan ◽  
Robert W. Stokes
Keyword(s):  
Economic Analysis ◽  
Cost Savings ◽  
Operating Speed ◽  
Full Width ◽  
Rural Highways ◽  
Unsignalized Intersections ◽  
Traffic Volumes ◽  
The Right ◽  
Design Hourly Volume ◽  
The Relationship

Guidelines for right-turn treatments at unsignalized intersections and driveways on rural two-lane and four-lane highways are presented. Two types of treatments, full-width lane and taper, were considered over the do-nothing radius treatment. The guidelines indicate the design hourly traffic volumes for which the benefits of right-turn treatments exceed their costs. The benefits used in the economic analysis were the operational and accident cost savings provided by right-turn treatments. The costs used in the development of the guidelines were the costs of constructing full-width right-turn lanes and tapers. The operational effects were estimated in terms of delay and excess fuel consumption experienced by through traffic due to right-turning vehicles. To account for the safety effects, the relationship between speed differential and accidents was used to estimate the reduction in right-turn, same-direction, rear-end accidents that would be expected to result from the provision of a right-turn treatment. The guidelines indicate the right-turn design hourly volume required to justify a right-turn treatment as a function of the following factors: ( a) directional design hourly volume, (b) highway operating speed, and ( c) number of lanes on the highway. Comparisons with other guidelines indicate that the range of guidelines developed are reasonable. In addition, they are more definitive than other guidelines because they account for highway operating speed and address taper treatments as well as full-width turn lanes.

scholarly journals Significant Increase in Fuel Efficiency of Diesel Generators with Lithium-Ion Batteries Documented by Economic Analysis

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6904
Author(s):  
Vedat Kiray ◽  
Mehmet Orhan ◽  
John Nwankwo Chijioke
Keyword(s):  
Energy Efficiency ◽  
Economic Analysis ◽  
Fuel Efficiency ◽  
Cost Savings ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Diesel Generator ◽  
Battery System ◽  
Li Ion ◽  
Diesel Generators

As the global diesel generator market grows and generators gain wider use, various methods are being developed to increase their energy efficiency. One of these methods entails integrating a Li-ion battery with diesel generators (DGs). This method did not attract attention until recently because it was economically unappealing. A significant decrease in the price of Li-ion batteries in recent years has made hybrid diesel generator/Li-ion battery systems more viable. We present a model-based economic analysis of a hybrid DG/Li-ion battery system with the aim of increasing the energy efficiency of diesel power generators. Special blocks were developed for calculations and comparisons with a MATLAB Simulink model, including 457 kW DG operating modes with/without a Li-ion battery. We simulated the system in order to calculate the conditions required to achieve savings in fuel and the level of savings, in addition to the payback time of the Li-ion battery. Furthermore, we present the additional savings gained by postponing the investment in a new diesel generator thanks to the Li-ion battery. Based on our findings, the payback period of the Li-ion battery system varies between 2.5 and 4 years. According to our 12-year economic analysis, the cost savings resulting from postponing new investments can reach 40% of the profit gained from the savings during such a period.

Analysis on the relationship between PM10 and Seoul Forest in South Korea

2018 ◽  
Vol 6 (1) ◽  
pp. 7-12
Author(s):  
Peter Sang-Hoon Peter Sang-Hoon ◽  
◽  
Jong-Chul Jeong2 ◽  
Keyword(s):  
South Korea ◽  
The Relationship

Pound Wise and Penny Foolish? Weight Loss and The Dynamics of Health Care Spending

2011 ◽  
Vol 14 (2) ◽  
Author(s):  
Thomas G Koch
Keyword(s):  
Weight Loss ◽  
Cost Savings ◽  
Cost Effective ◽  
Economic Consequences ◽  
Health Care Spending ◽  
Order Of Magnitude ◽  
Dynamic Measures ◽  
The Cost ◽  
The Impact ◽  
The Relationship

Current estimates of obesity costs ignore the impact of future weight loss and gain, and may either over or underestimate economic consequences of weight loss. In light of this, I construct static and dynamic measures of medical costs associated with body mass index (BMI), to be balanced against the cost of one-time interventions. This study finds that ignoring the implications of weight loss and gain over time overstates the medical-cost savings of such interventions by an order of magnitude. When the relationship between spending and age is allowed to vary, weight-loss attempts appear to be cost-effective starting and ending with middle age. Some interventions recently proven to decrease weight may also be cost-effective.

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