PRIMARY PROCESS SELECTION AND PROCESS SEQUENCING AS THE PART OF PROCESS PLANNING
The field of our research is defining the main criteria for selection of primary processes and types of operations in production. Selection of primary process is based on nature of material, quantity, form complexity of the part, part size/mass and some other factors. Type and sequence operation are results of influence different factors as product shape, surface roughness and tolerance. In application will be used some aspects of knowledge base. Application will enable users to better understand procedure of selection primary process and sequence operations with possible additional technological gradation support. Self learning and testing of students is included in application. In application are used IT technologies of Visual Basic.NET.
PROCESS PLANNING APPLICATION AND INTERNET CONNECTION
This work is a part of the project creating the technological database necessary for improvement of process planning and connection database through SQL server by Internet environment. Developed web site for Database System and Process Planning is useful especially during development student’s project’s of technological process inside fields Process Planning, Production and Operations Management. Here we have elaborated the first phase of selecting tool machines, tools, operations and initial material on the basis of the chosen criteria.We have indicated the problems of selection and the possibility of working out a solution. The Internet technology gives us the possibility to share our data with many users and a chance to improve the elements of Virtual Manufacturing
Techno-economic analysis of chemical looping combustion with humid air turbine power cycle
Abstract Power generation from fossil fuel-fired power plant is the largest single source of CO2 emission. CO2 emission contributes to climate change. On the other hand, renewable energy is hindered by complex constraints in dealing with large scale application and high price. Power generation from fossil fuels with CO2 capture is therefore necessary to meet the increasing energy demand, and reduce the emission of CO2. This paper presents a process simulation and economic analysis of the chemical looping combustion (CLC) integrated with humid air turbine (HAT) cycle for natural gas-fired power plant with CO2 capture. The study shows that the CLC–HAT including CO2 capture has a thermal efficiency of 57% at oxidizing temperature of 1200 °C and reducer inlet temperature of 530 °C. The economic evaluation shows that the 50 MWth plant with a projected lifetime of 30 years will have a payback period of 7 years and 6 years for conventional HAT and CLC–HAT cycles respectively. The analysis indicates that CLC–HAT process has a high potential to be commercialised.