Оптимізація методом теоретико-графових побудов когенераційних геотермальних систем

Анотація

UDC 532.5:536.24:621.311

Optimization Method of graph-theoretic constructing cogeneration ofgeothermal systems

B. Draganov, A. Burdin

The gas component of geothermal fluid after separation and purification system is divided into two streams: one stream is sent to the gas-piston engine, the second - the gas boiler.

The network initially heated water in the gas hot water boiler, then the engine cooling system and heat exchanger and waste-directed or in hot water or heat to the consumer.

Geothermal water after separation divided into two streams: one goes in hot water and the other in the heating system. Water is the second flow heat exchanger having hot water is sent to the modular manifold. Water is the second stream, having a heat exchanger heating system, partially directed to the heat pump and the remaining water is sent to the modular manifold. Water when the heat pump is also sent to the modular manifold.

The purpose of research - to develop a method for optimizing geothermal cogeneration systems based on graph theories.

Materials and methods of research. Optimization of the system under study - the definition of the best of all possible systems on selected criteria of efficiency. Integrated, system optimization aims at selection of the parameters of the system (technological, structural, etc.) which would provide optimal or near-optimal value criteria.

The current condition is bahatoekstremalnoyu large-scale optimization problems of discrete nonlinear programming complicated restrictions.

The criterion of effectiveness (CE) system - a measure by which to assess the conformity of the performance of their functions. The criterion used for comparable efficacy evaluation of different systems and analysis, synthesis and optimization of the system. One of the most common criteria are energy efficiency, ie exergy value.

The most effective mathematical methods in this case are the methods of graph theory.

To solve the problems of mathematical modeling, analysis and optimization of energy systems apply to the topological model system. They can establish dependency relationship between technological change topology and quantitative characteristics of the system of input variables affecting the system.

Results. Method graph-theoretical constructs has the advantage that the structure under study are presented in graphic form and easily select options for solutions. A positive feature of exergy compared with energy is that for each case can determine and evaluate exergy loss accurate energy data.