European Journal of Technology and Design

99-105

Authors: Teena P. Benny, Anoop A.B, Jose. K. Jacob

Thermal designing of an air preheater typically include the determination of heat transfer coefficient, Fin parameter, Colburn factor, fanning friction factor, heat transfer area, overall heat transfer coefficient, its type and size. The Continuous Caustic Fusion plant is a plant to produce export grade caustic soda Flakes from caustic soda solution. Design of heat exchangers has a greater role in thermal engineering field. An air preheater is a type of heat exchanger device designed to heat air before another process. Here the air preheater is a plate fin heat exchanger. Some problems are involved in the working of Air preheater used in the Continuous Caustic Fusion plant. Heat transfer is not properly taking place inside the Air Preheater. The outlet temperature of heat exchanger cannot be increased to a required value because of fouling produced inside the heat exchanger. So the air preheater is to be redesigned, to overcome this situation. In this paper finding the fouling factor and redesigning of plate fin heat exchanger are demonstrated.

115-121

Authors: Do Nhu Y, Ngo Xuan Cuong

Power quality was assessed by two parameters voltage and frequency, the voltage changes are of a local property, and change the frequency – systematic. Frequency deviation in the grid due to an imbalance in power between the generator and the load will affect the economic and technical indicators of power stations, as well as consumers. To ensure the stability and reliability of the electric system and generator protection to prevent damage during the operation, it is necessary and indispensable device monitoring – warning frequency generator in power stations.

54-62

Authors: Igor N. Rozenberg

This article describes the management of the transport sector. The article shows that modern transport management techniques uses semiotic and situational control. The article argues that modern transport management described in the information structures and information units. The analysis of first introduced the concept of information unit showed that it corresponds to the content of the concept of information structure. The article shows that information structures and information units integrate the semiotic and situational control in a single technology.

72-78

Authors: H. Sreedharan, J.R. Reshma, J.K. Jacob, V.V. Sivakumar

The energy of exhaust gases from gas turbines are recovered by an unfired HRSG to supply steam to the steam cycle. The first law of thermodynamics deals with quantity of energy and asserts that energy cannot be created nor be destroyed. But, the second law deals with quality of energy. It is concerned with degradation of energy during a process. It gives an insight to the lost opportunities to do work. Thus it gives lot of scope for improvement. This makes second law analysis a powerful tool in optimization of complex thermal systems. Exergy also known as availability is the maximum useful work that could be obtained from the system at a given state in a specified environment. In this paper the variation of exergetic efficiency of gas turbines and their impact on thermal efficiency of combined cycle with variation of gas turbine parameters is demonstrated.

13-19

Authors: S.G. Dyshlenko

The article reveals the content of the principles of geoinformation modeling. This article describes the difference between geoinformation modeling of other types of modeling. The main difference is in the use of geodata. The article shows the difference between spatial modeling and geoinformation modeling article shows the difference between geoinformation modeling and GIS modeling. This article describes digital simulation as the main form of geoinformation modeling. This article describes the spatial, situational and methodological features of geoinformation modeling.

30-34

Authors: Tatiana A. Ozhereleva

The article analyzes the phenomenon that periodically appears in human activities. This phenomenon is referred to as an information barrier. Information barrier has different manifestations. Informa-insulating barrier is manifested in the human inability to efficiently process information collection. The article analyzes the causes of information barriers. This article describes the recommendations and methods that contribute to overcome information barriers.

127-139

Authors: Konstantin N. Makarov, Aleksandr V. Ivanov, Anastasiya A. Gorlova

When designing ports, one important task is to predict sinoimeri port areas and approach channels sandy or pebbly silt. On the basis of this forecast are determined by the methods of protection from sinoimeri, as well as the frequency and volume of maintenance dredging works. Out at sea the river flow becomes turbulent inertial jet. Friction on the bottom and the interaction with sea water leads to an overall reduction of jet velocity and its spreading. An important regularity is also spreading muddy river flow on the surface of the denser seawater. This creates conditions for rapid deposition of large fractions of the sediment on the bottom. The bulk of the sediment particles larger than 5 mm is deposited on the surface of the river bar and further transported along the shore wave energy currents. Outside of the bar shall be made only fine-grained material. The particle size of sediment deposited on the bottom outside of the bar decreases sharply with depth. Thus, sinoimeri of harbors and access channels is mainly suspended river sediments. To calculate the distribution of the river flow, in the coastal zone in the presence of long chore currents developed a special method that implements the theory of turbulent planar jet in a drifting thread. The solid portion of the jet flow that enters the waters of the port or channel as a result of increasing depth and, consequently, reduce turbidity settles, causing shoaling waters. The example of calculation of sinoimeri berth 1a in the port of Tuapse by solid flow of Tuapse river.

149-158

Authors: Viktor Ya. Tsvetkov

The article arranges cognitive modeling techniques with the use of spatial information. The article examines the main areas of cognitive modeling. The article shows the contradiction between the problem of cognitive modeling and its implementation currently. The article demonstrates the importance of geo-information and spatial models for cognitive modeling. This article describes the feature of human perception of image information. The article shows the importance of human perception for spatial modeling. It describes the content of an illustrative and cognitive function of computer graphics. The article proves the need for increased research in cognitive modeling through the use of methods of psychology and artificial intelligence. These studies contribute to the development of modeling of cognitive processes. The article shows the importance of cognitive modeling at remote research.

107-114

Authors: Mohammad Hadi Salimi, Taleb Zarei

Energy conservation in the design of a chemical plant is one of the most important considerations. In addition, to determine the minimum amount of hot and cold energy needed for a process is one of the main computations of determining the amount of stored energy. The heat integration (energy integrating) is an important factor in economic designs. In this paper, phases 9 and 10 of the gas condensate stabilization process of the South Pars gas are optimized using the integration design method. The results obtained showed the modified heat exchanger network, removal of existing both air fans, recovery of 2.5 MW of electricity and reduced operating costs.