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  • Analysis of the correlation between air leakage and fuel consumption in power station steam boilers
    Drobnič, Boštjan ; Senegačnik, Andrej ; Oman, Janez, 1947-2011
    In thermodynamic processes it is of very high importance to convert energy with highest possible efficiency. This also applies to thermal power stations where it must be ensured that the primary ... conversion of the fuel's internal energy into heat is performed as efficient as possible. Higher efficiency of any part of the plant reduces the amount of fuel required for certain output power and therefore reduces the amount of pollutants released into the atmosphere. One of the ways to increase the efficiency of a power station steam boiler is to return part of the low-temperature output heat of flue gases back into the combustion process by preheating the combustion air in air heaters. In power plants the air heaters are usually Ljungström type rotary regenerators, which are characterised by a certain degree of leakage and mixing of air flows and flue gases. Some leakage also occurs in other parts of the boiler plant which means that a certain amount of the combustion air bypasses the air heater. The percentage of the total amount of the combustion air that is heated in the air heater also affects the efficiency of the boiler plant. The paper deals with the influence of leakage in an air heater and the influence of the amount of combustion air heated in an air heater on the efficiency of a boiler plant. Characteristic types of leakage in an air heater and in a boiler itself are studied. The theoretical explanation is supported with the results of measurements on air heaters in a thermal power plant.
    Vir: Fifth International Conference on Technologies and Combustion for a Clean Environment, Lisbon, Portugal, 12-15 July 1999 (Vol. II, str. 931-937 (paper 35.19))
    Vrsta gradiva - prispevek na konferenci
    Leto - 1999
    Jezik - angleški
    COBISS.SI-ID - 3268891

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