Estimation of Power Consumption in Screw Gas Compressor Installed on Natural Gas Power Plant

Abstract

The knowledge of the precise power consumption of screw gas compressors, which is the highest power requirement when compared with other equipment used in natural gas power plants, can be an indicator of energy efficiency in natural gas power plants and impact the construction cost of the project. This paper proposed a calculation method for the estimated power requirement of the screw gas compressor and verified the calculation model with data from two different natural gas power plants. The verification methodology has been done by comparing the result with the obtained power from the unit during 11 operation scenarios. The result has indicated that the proposed calculation model can achieve an error less than 5% on all of operation scenarios. Thus, the proposed estimation model can be used to simplify the calculation process for the power requirement of a screw gas compressor.