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THE ROLE OF THE ACCOMPANYING VOICE IN SERBIAN TRADITIONAL TWO-PART SINGING - ON THE BASIS OF THE VOCAL TRADITION OF THE WESTERN SERBIA

Authors
Publisher
Institute of Ethonology and Folklore Research
Publication Date
Disciplines
  • Design
  • Engineering

Abstract

bahadori_eng.vp Prediction of temperature drop accompanying a given pressure drop for natural gas wellstreams A. Bahadori and H. B. Vuthaluru PROFESSIONAL PAPER Accurate prediction of the temperature drop accompanying a given pressure drop for the natural gas production systems is necessary in the effective design of natural gas production facilities. Current rigorous compositional models depend on many variables and require information about fluid composition. In this paper, a simple-to-use method which is easier than current available models, is presented to predict accurately the appropriate temperature drop accompanying a given pressure drop in natural gas production systems based on the black-oil model to get a quick approximate solution for the temperature drop of a natural gas streams in gas production systems. Considering the results, the new developed correlation is recommended for rapid estimation of temperature drops in gas production systems for pressures up to 45 MPa and pressure drops up to 25 MPa. The obtained results illustrate that good agreement is observed between the reported data and the values calculated using the new developed method. The average absolute deviation between reported data and the proposed correlation is around 4.6%. The proposed method appears to be superior owing to its accuracy and clear numerical background, wherein the relevant coefficients can be retuned quickly for various data. Key words: natural gas, liquid content, temperature drop, Black-Oil model, simulation 1. Introduction Predicting accurate temperature profiles in gas-produc- tion systems can improve the design of production facili- ties. As an example, temperature profiles in systems have application in accurate two-phase flow pressure drop prediction, gas-lift designs, and etc. If composition of gas is available, engineers predict the temperature drop by using a computer simulation program based on a fully compositional equation of state (EOS) pVT formu- lation and flash calcul

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