COMPREHENSIVE AUTOMATION OF PROCESS DESIGN IN FLEXIBLE PRODUCTION

There the purposes are to rise the effectiveness of machining-assembling in the machinery industry, to improve the quality of design approaches, to decrease the time and the expenses during the process design on the basis of integration of process design systems and of flexible production with the instrumentware. The methodology of comprehensive process design in interconnection with the space of flexible production has been created. The procedure of comprehensive automation of process design on the basis of unified simulation methods of structural members of objects and of design processes has been developed. The set of instrument systems to study the production processes and to form the facilities of computer-aided subsystems according to the principles of expert systems has been created. The recommendations to create the subsystems and to adapt the facilities and their components for the changing conditions of production have been developed. The effectivenesses are the major decrease of expenses, the decrease of periods 2 - 2,5 times during the process preparation of production of new machineryAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

Thermodynamic analysis of an innovative steam turbine power plant with oxy-methane combustors

The Rankine cycle steam turbine power plants make a base for world electricity production. The efficiency of modern steam turbine units is not higher than 43–45%, which is remarkably lower compared to the combined cycle power plants. However, an increase in steam turbine power plant efficiency could be achieved by the rise of initial cycle parameters up to ultra-supercritical values: 700–780◦C, 30–35 MPa. A prospective steam superheating technology is the oxy-fuel combustion heating in a sidemounted combustor located in the steam pipelines. This paper reviews thermal schemes of steam turbine power plants with one or two side-mounted steam superheaters. An influence of the initial steam parameters on the facility thermal efficiency was identified and primary and secondary superheater parameters were optimized. It was found that the working fluid superheating in the side-mounted oxy-methane combustors leads to an increase of thermal efficiency higher than that with the traditional boiler superheating in the initial temperature ranges of 700–780◦C and 660–780◦C by 0.6% and 1.4%, respectively