Перегляд за Автор "Wu Zongyan"

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  • Ескіз
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    Methodological basis for a comprehensive assessment of the efficiency of energy production by energy-environmental indicators
    (КПІ ім. Ігоря Сікорського, 2022) Varlamov, G.; Romanova, K.; Zhang Weijie; Jiang Jianguo; Wu Zongyan
    The solution to the problem of energy saving and improving environmental security can be provided only by a systematic approach, which should be based on the analysis of the efficiency and environmental friendliness of energy production. A methodology was developed and implemented to assess the qualitative state of operation of specific thermal power facilities by energy and environmental characteristics in real time, taking into account the set of energy, environmental, passport and normalized performance of its units, facilities and devices. The methodology in practice allows in a complex to determine simultaneously the level of energy efficiency and environmental safety with an assessment of compliance with the level of permissible values for concentrations of pollutants and hazardous substances of the working area and their hazard class. In this case, indicators and parameters of monitoring of various processes of each individual element and component of the energy production facility as a whole, which uses as a source of energy organic fuel, are used. According to this methodology of comprehensive energy-environmental assessment of operating conditions of energy facilities can be compared different in design, thermal, environmental and other scale characteristics of thermal energy cycles, facilities, installations, units and other thermal energy equipment and optimize the choice of energy source for heat and energy production under different schemes of layout of units within the cycles. Application of the methodology of assessment of energy-ecological efficiency of thermal energy processes allows to assess the energy-ecological feasibility of modernization or reconstruction of facilities in order to achieve the best performance of their operation in the heat and energy supply systems of various sectors of the country's economy. The use of the method is demonstrated by the example of calculating the coefficient of energy and environmental efficiency for energy boilers of different capacities.
  • Ескіз
    ДокументВідкритий доступ
    Modern technologies for increasing the energy and environmental efficiency of energy production
    (КПІ ім. Ігоря Сікорського, 2022) Varlamov, G. B.; Mitchenko, I. O.; Jiang Jianguo; Zhang Weijie; Wu Zongyan
    The problems of energy efficiency of energy production along with improving the environmental safety of enterprises are becoming increasingly relevant. One of the ways to solve these problems is the implemention of effective technologies, which include microflare incineration technology (MIT-technology) of gaseous fuels. The use of MIT- technology, in addition to a significant reduction in harmful emissions into the atmosphere, can simultaneously increase the energy efficiency of thermal power plants. A significant positive effect can also be achieved by using contact energy exchange plants. A striking example of such a gas-steam plant “Aquarius” the operation of which exceeds the efficiency of gas turbine plants by 10-12% with a simultaneous significant decrease in the concentration of toxic nitrogen oxides NOx and carbon monoxide CO in flue gases.