Using the method of exergy analysis to evaluation the efficiency of energy-conversion of glass production plants.
Journal Title: Наукові праці Донецького Національного Технічного Університету серія: Електротехніка і Енергетика - Year 2017, Vol 1, Issue 1
Abstract
Modern energy technology complexes of glass production, in addition to glass furnace itself, also include systems for utilization of thermal waste energy resources. When equipping the furnace with evaporative cooling systems, the utilization system is supplemented by energy technology equipment, where low-potential water steam of cooling systems is used as energy carrier. Further improvement of complex energy technology plants requires the development of newer and more multifunctional research methods. For example, the methods of thermodynamic research, which are based on exergy functions, can provide quite complete information about the efficiency of energy conversing processes in these complexes. Waste heat recovery schemes with cogeneration are the most effective for recuperative glass furnaces taking into account possibilities of fuel energy potential using. Hydrogen turbines applying is promising in such cogeneration schemes. The existing level of flue gas temperature after glass furnaces corresponds to the temperature level, which is necessary for the thermal sorption compressors operation. Compressors of this type provide the necessary hydrogen pressure before the turbine. A computational study of the efficiency of the waste heat recovery plant with a thermal sorption compressor and a hydrogen turbine is carried out. The flue gas temperature range at the compressor inlet over 250 – 450 °C is considered while flue gas temperature at the compressor outlet is assumed to be constant and equal to 120 °C. The operating data for hydrogen circuit at the nodal points of the cycle is obtained. According to the calculation results, hydrogen turbine unit power at a flue gas temperature of up to 300 ° C is nothing more than 60 kW. At the same time, the system perfection coefficient reaches its maximum at the minimum level of flue gas tem peratures (250 °C) at the utilization system inlet. Thus, when considering the possibility of using of energy -converting complexes with hydrogen turbine plants for glass plants, an additional complex analysis of the results taking into account both economic and technical factors should be carried out. The optimal parameters of waste heat recovery plants are possible to find only considering a complex set of interrelated factors with regard to the type of equipment used and its performance indicators.
Authors and Affiliations
O. KOSHELNIK
Keywords
Related Articles
- EP ID EP660785
- DOI -
- Views 176
- Downloads 0
STRUCTURAL REALIZATION OF THE MAXIMUM TORQUE PER AMPERE STRATEGY FOR THE VECTOR SPEED CONTROL SYSTEM OF INDUCTION MOTORS
У роботі запропоновано новий спосіб структурної реалізації стратегії максимізації моменту на ампер в системі регулювання швидкості асинхронного двигуна з векторним керуванням, що відрізняється від типового наявністю ко...
Analysis of emergency disconnections of main power lines.
Automatic disconnections in trunk transmission lines 750 kv as a result of geomagnetic induction currents is studied The influence of geomagnetic induction currents on emergency switching-off of the main transmis...
Generalized dependences of turbogenerator electromagnetic parameters on saturation.
For the first time we obtained generalized analytical dependences of the parameters of equivalent circuits (which take into account different mutual inductive coupling between the windings) of TBB turbogenerators...
IMPROVING CURRENT PROTECTION AGAINST SHORT CIRCUIT OF SMART-GRID 6–35 KV NETWORK USING STRUCTURAL-INFORMATION METHOD. PART 1. ANALYSIS
A proposed method is presented for methodical improvement of the algorithms of relay pro-tection and automation for the implementation of the concepts of "Smart -grid", "Digital cell", "Digital substation", and "Outsour...
Questions of energy saving in planning the modernization of electromechanical complexes of mine pumping
At present many mining companies have a large number of electromechanical equipment. This equipment exhausted the resource almost or fully. For further safe operation of enterprises need to modernize the electromechanic...