Published March 2022, Pg. 63-65

Section: Young scientists and specialists

UOT: 622.323

DOI: 10.37474/0365-8554/ 2022-03-63-65

Hydraulic losses in cryogenic pipelines

Kh.T. Jafarova - Azerbaijan State University of Oil and Industry

The pressure loss in cryogenic pipelines for the cases with one-phase flow is specified via known hydraulic formulas for general fluids. The stream of two-phase flow causes troubles for hydraulic calculation of cryogenic pipeline. There are three main types of cryogenic flow in the pipelines. First type is characterized with quite equal distribution of liquid throughout stream phase of gas (homogenous gas-liquid mixture), second type – with the structure of gas and fluid in separate layers, and the third one – with the motion of fluid in the ring part of pipe walls and high speed of gas in its central part.

The paper offers a calculation formula for the estimation of hydraulic resistance (losses) for hydraulic calculation of multi-phase cryogenic pipelines in the presence of thermal exchange with environment when pressure losses are associated with the force of gravity and friction.  

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