Research on Modeling Method of Gas Turbine Inlet Pressure Loss

doi:10.12096/j.2096-4528.pgt.21043

Abstract

Abstract:

In order to ensure the safe and economic operation of gas turbine, it is of great significance to control the inlet pressure loss in the inlet filtration system. This paper divided the inlet pressure loss into two parts: pipeline flow loss and filter pressure loss. The function relationship between the inlet pressure loss and air velocity was established based on the mechanism analysis, and correction factors were introduced to consider the influence of external atmospheric environment and filter degradation. Then, the model was verified through the performance experiment of air filter and the collection of field data, which shows that the relationship between inlet pressure loss and the influencing factors is in good agreement with the model. Finally, by combining the thermodynamic system model of gas turbine, the influence of inlet pressure loss on gas turbine performance was analyzed. The results show that when the filter is near the service life, the negative effect of abnormal environmental factors on the output power of gas turbine is more obvious than that of the new filter.

Key words: gas turbine, inlet filtration system, filter pressure loss

CLC Number:

TK14

Yunfeng JIN, Chao LIU, Gaofeng DENG, Yunlong GUAN, Xin TIAN, Haizhou HUANG, Dongxiang JIANG. Research on Modeling Method of Gas Turbine Inlet Pressure Loss[J]. Power Generation Technology, 2021, 42(4): 395-403.

Figures/Tables 8

Fig.1 Components of gas turbine inlet filtration system

Fig.2 Schematic diagram of filter performance test

Fig.3 Test results of new filter performance

Fig.4 Test results of old filter performance

Fig.5 Relationship between filter pressure loss and atmospheric relative humidity

Fig.6 Relationship between filter pressure loss and concentration of air pollutants

Fig.7 Component composition of single shaft gas turbine

Fig.8 Influence of inlet pressure loss on gas turbine performance

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