scholarly journals Design Optimization on Cost Efficiency and Benefit Increase of Project Construction Unit Production PT.X

2021 ◽  
Vol 4 (1) ◽  
pp. 207-218
Author(s):  
Muhammad Faisal Ghifari ◽  
Muhammed Ali Berawi
Keyword(s):  
Design Optimization ◽  
Parameter Design ◽  
Requirements Specifications ◽  
Scenario Design ◽  
Standard Design ◽  
Farm Unit ◽  
Project Construction ◽  
Standard Quality ◽  
The Cost ◽  
Opening Up

The increased consumption of poultry in Indonesia, opening up greater business opportunities in the industry. The rapid project construction in the livestock business should be questioned whether the implementation of project has been carried out properly? The evaluation of production requirements, project design scenarios, the cost of project, and the value of every component that have been carried out should be identified by evaluating the requirements, specifications, standard quality, the machines and equipment. In the last 4 years, PT.X has built 4 new breeding farm units, in far different locations, typical layouts, land areas, varied building and installation designs. This resulted in the creation of master plan that was not standardized. By conducting an evaluation related to design optimization on the construction of the 4 PT X breeding farm unit, the better standard design is obtained in terms of cost and value. The research of the method done by analyzing the production needs as a scenario design that produce the parameter design as the reference in making the new standard design. The result of the optimization is an efficient cost with suitable function for the production and also giving some extra benefit by providing more facilities and utilities.

Integrated Design and Multi-Objective Optimization of a Single Stage Heat-Pump Turbocompressor

2013 ◽  
Author(s):  
J. Schiffmann
Keyword(s):  
Design Optimization ◽  
High Efficiency ◽  
Integrated Design ◽  
Heat Pumps ◽  
Small Scale ◽  
Multi Objective Optimization ◽  
Design Constraints ◽  
Multi Objective ◽  
Wide Range ◽  
Standard Design

Small scale turbomachines in domestic heat pumps reach high efficiency and provide oil-free solutions which improve heat-exchanger performance and offer major advantages in the design of advanced thermodynamic cycles. An appropriate turbocompressor for domestic air based heat pumps requires the ability to operate on a wide range of inlet pressure, pressure ratios and mass flows, confronting the designer with the necessity to compromise between range and efficiency. Further the design of small-scale direct driven turbomachines is a complex and interdisciplinary task. Textbook design procedures propose to split such systems into subcomponents and to design and optimize each element individually. This common procedure, however, tends to neglect the interactions between the different components leading to suboptimal solutions. The authors propose an approach based on the integrated philosophy for designing and optimizing gas bearing supported, direct driven turbocompressors for applications with challenging requirements with regards to operation range and efficiency. Using previously validated reduced order models for the different components an integrated model of the compressor is implemented and the optimum system found via multi-objective optimization. It is shown that compared to standard design procedure the integrated approach yields an increase of the seasonal compressor efficiency of more than 12 points. Further a design optimization based sensitivity analysis allows to investigate the influence of design constraints determined prior to optimization such as impeller surface roughness, rotor material and impeller force. A relaxation of these constrains yields additional room for improvement. Reduced impeller force improves efficiency due to a smaller thrust bearing mainly, whereas a lighter rotor material improves rotordynamic performance. A hydraulically smoother impeller surface improves the overall efficiency considerably by reducing aerodynamic losses. A combination of the relaxation of the 3 design constraints yields an additional improvement of 6 points compared to the original optimization process. The integrated design and optimization procedure implemented in the case of a complex design problem thus clearly shows its advantages compared to traditional design methods by allowing a truly exhaustive search for optimum solutions throughout the complete design space. It can be used for both design optimization and for design analysis.

Research of Project Investment Control Based on Life Cycle Theory

2011 ◽  
Vol 130-134 ◽  
pp. 1123-1127
Author(s):  
Jun Li Peng ◽  
Xiao Li
Keyword(s):  
Decision Making ◽  
Life Cycle ◽  
Control Measures ◽  
Control Effect ◽  
Project Investment ◽  
Investment Control ◽  
Life Cycle Theory ◽  
Whole Process ◽  
Project Construction ◽  
The Cost

Project Investment Control runs through the whole process of project construction, and after the future decision-making stage, the design, tendering, construction, and the final account of the cost-control effect determine the final results of project investment control. In this paper, reference to relevant examples of actual projects, not only discusses the factors that affect the project investment during each stage of project implementation, but also suggests some corresponding control measures in use of life cycle theory, designed to provide reference for investment control of project construction.

scholarly journals Research on the Fine Cost Management of Port Engineering Project Based on BIM

2020 ◽  
Vol 4 (2) ◽  
pp. 42
Author(s):  
Jian Yin ◽  
Huiyun Zhou ◽  
Jing Yang
Keyword(s):  
Cost Management ◽  
Construction Cost ◽  
Economic Benefits ◽  
Construction Process ◽  
Engineering Project ◽  
Whole Process ◽  
Project Construction ◽  
The Cost ◽  
Port Engineering ◽  
Very High

<p>With the development of economic globalization, the scale of international trade continues to expand. Ports are very important for cross regional transactions. However, the construction cost is also very high in the actual construction process because port engineering is a relatively large project. Cost management can effectively control the cost and improve the economic benefits of port engineering project construction. The traditional cost management model has been unable to meet the needs because the construction cost control is a dynamic process and runs through the whole process of the project. BIM information technology is a technology with engineering digital model as the core. Based on BIM, this article studies the refined cost management of port engineering project, and aims to provide some help for relevant practitioners.</p>

scholarly journals Multidisciplinary design optimization of stamped and welded structures

2021 ◽  
Author(s):  
Michael Mang
Keyword(s):  
Design Optimization ◽  
Multidisciplinary Design Optimization ◽  
Material Selection ◽  
Real Life ◽  
Element Model ◽  
Multidisciplinary Design ◽  
Welded Structures ◽  
Loading Case ◽  
Wheel Chair ◽  
The Cost

Multidisciplinary design optimization (MDO) is very useful in present day engineering. The aim of this thesis is to develop and utilize an MDO procedure that can be applied to stamped and welded structures. This procedure involves new techniques such as material selection, weld constraint, and cost optimizations. The MDO is developed through five design iterations starting with a simple finite element model. As more techniques are added, the procedure progresses towards using a real life radiator support structure in a static loading case. Three trials were completed to optimize the cost of the structure; the final result is that the total cost was minimized by 20%. The MDO procedure was also applied to a real life wheel chair ramp model from a modified minivan. This structure was subject to a rear crash situation and the total mass, after the procedure was applied, was reduced by 19%.

scholarly journals BUSINESS INTELLIGENCE FOR COST ANALYSIS IN CONSTRUCTION PROJECT

2020 ◽  
Author(s):  
Satya Kumara
Keyword(s):  
Business Intelligence ◽  
Business Processes ◽  
Performance Indicator ◽  
Construction Project ◽  
Scientific Discipline ◽  
Cost Overrun ◽  
Business Decisions ◽  
Project Construction ◽  
The Cost

Cost overrun in the field of project construction is still a global issue, and it is a challenge to seek for solution from various scientific discipline including information technology. This thesis aims to design a business intelligence application model for analyzing the cost of construction project to provide follow-up information as quickly and as early as possible to assist the executives to make valuable business decisions. This case study was prepared through literature reviews, interviews, and direct observation to obtain overview of the business processes in the construction company. The modeling of BI application which can be successfully developed using agile methods is very effective in addressing the change. This case study found that the application of business intelligence which provides information on key performance indicator (KPI) can assist the executives of the company to make decisions quickly and precisely, thus improving the performance of the project, especially in the cost control.

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