Application of technological transfer method in the modelling of compressor plants for underground gas storages

The paper studies the issue of enhancing compressor fleet with the aim of increasing the active gas capacity in the underground gas storages. The aspects, the analysis of which is significant for the task solution are listed. The importance of the development of dynamics graphs for the average daily capacities of gas injection into the reservoir and injection pressure, to the end of each month based on the parameters of reconstruction program and the results of carried out analyses is marked. The comparison of gas injection process using piston gas engines and various types of compressor units is carried out. Technical, technological, fitting, exploitation, service and economic advantages of compressor plant model constructed using offered method of technological transfer are explained.

Modelling and Experimental Investigation of Compressor Plant Operation Under Unsteady Conditions

Compressor plants operate continuously or frequently at unsteady operational conditions. This is due to pressure fluctuations within the plant, variable flow demand, or unsteady inlet conditions, as well as compressor shaft speed variations. Also, following demand, the compressor plants often work intermittently and they frequently start and stop. An experimental and analytical study of a screw compressor plant operating under unsteady conditions has been carried out. For this purpose the one dimensional model of the processes within a compressor was extended to include other plant components. This was based on the differential equations of the conservation of mass and energy. The results derived from the model have been verified by experiment in order to obtain a reliable tool that can simulate a variety of scenarios which may occur in everyday compressor plant operation. The analytical model was then extended to demonstrate the whole plant transient operation when a screw compressor is connected through connecting pipes with storage tanks, control valves and heat exchangers in a complete system.