Computational Analysis on the Influence of Dust Accumulation of Air-Cooled Condenser on Unit Outputs

doi:10.11930/j.issn.1004-9649.2013.9.52.3

Abstract

Abstract: The dust accumulation of air-cooled condensers determines whether the unit can be operated with enough security and high efficiency. With the ever-increasing installed capacity of air-cooled units in the areas rich in coal but short of water resources, it is necessary to study the relationship between the thickness of dust accumulation and unit outputs. In this paper, the heat exchanging coefficient before and after dust accumulation is calculated by taking advantage of the heat transfer theory and the principle of heat exchanger. Combined with the operation data of one 330-MW unit of a power plant, the correlation between the heat exchanging coefficient/unit back pressure and the fouling thickness is derived. In this way the influence of dust thickness on the unit output is concluded. The results show that for 330-MW units, a mere 1mm thick layer of fouling will reduce the unit output by 1.4%.

Key words: air-cooled unit, air-cooled condenser, heat exchanging coefficient, fouling thickness, back pressure, unit output

CLC Number:

TK264.1

GUO Min-chen, LI Mei-bao, PENG Xin-fei, FAN Xue. Computational Analysis on the Influence of Dust Accumulation of Air-Cooled Condenser on Unit Outputs[J]. Electric Power, 2013, 46(9): 52-55.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.9.52.3

https://www.electricpower.com.cn/EN/Y2013/V46/I9/52

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