Cost Efficient Design of Fault Tolerant Geo-Distributed Data Centers

2017 ◽  
Vol 14 (2) ◽  
pp. 289-301 ◽  
Author(s):  
Rakesh Tripathi ◽  
S. Vignesh ◽  
Venkatesh Tamarapalli ◽  
Deep Medhi
Keyword(s):  
Data Centers ◽  
Fault Tolerant ◽  
Distributed Data ◽  
Efficient Design ◽  
Cost Efficient

Cost-Efficient Design of a Diet Validation Study

1995 ◽  
Vol 142 (3) ◽  
pp. 353-362 ◽  
Author(s):  
Daniel O. Stram ◽  
Matthew P. Longnecker ◽  
Lisa Shames ◽  
Laurence N. Kolonel ◽  
Lynne R. Wilkens ◽  
...  
Keyword(s):  
Validation Study ◽  
Efficient Design ◽  
Cost Efficient

An Efficient Single-Screw 11 000 TEU Containership: The Suez Max SS

2001 ◽  
Vol 38 (04) ◽  
pp. 219-232
Author(s):  
B. J. Rosello ◽  
A. N. Perakis
Keyword(s):  
Cost Analysis ◽  
Economies Of Scale ◽  
Suez Canal ◽  
Efficient Design ◽  
Single Screw ◽  
Economical Design ◽  
Initial Stability ◽  
Twin Screw ◽  
Cost Efficient ◽  
The Cost

The ability to transport containers with the least cost at currently required service speeds of approximately 25 knots to maintain a regular operating schedule is the goal of every post-panamax containership operator. The desire to carry more containers is driven by several economies of scale and their implications, which allow for significant savings. A single-screw containership, the Suez Max SS, is designed and evaluated against existing designs that include the P & O Nedlloyd Southhampton, Maersk S-Class, and the twin-screw Suez Max, which is a concept vessel. The containerships are compared using several different ratios and a cost per 20-ft equivalent unit (TEU) evaluation. The design of the Suez Max SS was built to the maximum draft currently allowed by the Suez Canal Authority. An initial stability analysis is performed that utilizes five different container loading conditions. A cost analysis that involves capital, operating, port, and fuel costs and Suez Canal fees is also completed. The four vessels are evaluated on a round-trip schedule between the ports of Rotterdam and Singapore with the same voyage characteristics and conditions. The Suez Max SS is found to be a more economical design with savings of approximately 25% over the existing vessels and a 15% savings over the concept vessel evaluated in the cost analysis. The Suez Max SS utilizes its economies of scale and the advantages of a two-port schedule that allow it to be such a cost-efficient design.

Enabling the Interoperability of the Modelica DSL and Matlab Simulink towards the Development of Self-Adaptive Dynamic Systems

2018 ◽  
Vol 7 (4) ◽  
pp. 54-75
Author(s):  
Nikolay Tcholtchev ◽  
Grit Dudeck ◽  
Michael Wagner ◽  
Christian Hein ◽  
Arun Prakash ◽  
...  
Keyword(s):  
Development Process ◽  
System Development ◽  
Efficient Design ◽  
Matlab Simulink ◽  
Adaptive Dynamic ◽  
Domain Specific ◽  
Current Article ◽  
Cost Efficient ◽  
Self Adaptive

Domain Specific Languages (DSL) are an important concept that is used in industry, in order to enable the fast and cost-efficient design of specific functions/components, and/or to target particular aspects of the systems' development and operation. In the current article, the authors describe their experiences on the integration of the Modelica DSL into a platform that enables the integration and interoperability of model-based tools across the various phases of the system development process. Furthermore, it is illustrated how Matlab Simulink can be used in parallel in the course of the same system design undertaking. Thereby, the authors present their approach and compare different tools which were used, in order to efficiently complete the integration, and finally exemplify the outcome on a case study related to a self-adaptive dynamic system from the automotive domain.

scholarly journals A Framework for Flexible and Cost-Efficient Retrofit Measures of Heat Exchanger Networks

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1472 ◽  
Author(s):  
Christian Langner ◽  
Elin Svensson ◽  
Simon Harvey
Keyword(s):  
Heat Exchanger ◽  
Heat Recovery ◽  
Main Idea ◽  
Efficient Design ◽  
Industrial Plants ◽  
Feasibility Assessment ◽  
Point Analysis ◽  
Heat Exchanger Networks ◽  
Cost Efficient ◽  
Design Proposal

Retrofitting of industrial heat recovery systems can contribute significantly to meeting energy efficiency targets for industrial plants. One issue to consider when screening retrofit design proposals is that industrial heat recovery systems must be able to handle variations, e.g., in inlet temperatures or heat capacity flow rates, in such a way that operational targets are reached. Consequently, there is a need for systematic retrofitting methodologies that are applicable to multi-period heat exchanger networks (HENs). In this study, a framework was developed to achieve flexible and cost-efficient retrofit measures of (industrial) HENs. The main idea is to split the retrofitting processes into several sub-steps. This splitting allows well-proven (single period) retrofit methodologies to be used to generate different design proposals, which are collected in a superstructure. By means of structural feasibility assessment, structurally infeasible design proposals can be discarded from further analysis, yielding a reduced superstructure. Additionally, critical point analysis is applied to identify those operating points within the uncertainty span that determine necessary overdesign of heat exchangers. In the final step, the most cost-efficient design proposal within the reduced superstructure is identified. The proposed framework was applied to a HEN retrofit case study to illustrate the proposed framework.

Modeling of a Battery Electric Vehicle (BEV) for Efficient Model-Based Design

2013 ◽  
Vol 198 ◽  
pp. 533-538
Author(s):  
Robert Buchta ◽  
Xiao Bo Liu-Henke
Keyword(s):  
System Model ◽  
Physical Parameters ◽  
Hardware In The Loop ◽  
Efficient Design ◽  
Mechatronic Systems ◽  
Power Train ◽  
Model Based ◽  
Entire Vehicle ◽  
Cost Efficient ◽  
Multi Body

For an efficient design process of complex mechatronic systems a continuous and verification-orientated model-based methodology with Model-in-the-Loop (MiL), Software-in-the-Loop (SiL) and Hardware-in-the-Loop (HiL) simulation is suitable. Using such an approach the real-time capable nonlinear multi-body system model of the entire vehicle with the electric power train and the identification of the physical parameters are described. A continuous appliance of the introduced model is a contribution for the frontloading and guarantees a time and cost efficient mechatronic design approach.

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