Loss coefficients of ice slurry in sudden pipe contractions

Archives of Thermodynamics

?ukasz MikaDivision of Refrigeration and Air-Conditioning, Cracow University of Technology, al. Jana Paw?a II 37, 31-864 Kraków, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Division of Refrigeration and Air-Conditioning, Cracow University of Technology, al. Jana Paw?a II 37, 31-864 Kraków, Poland

关键词: Keywords: Ice slurry flow;    Flow resistance;    Local loss coefficient;    Pressure losses in contraction;   

DOI  :  10.2478/v10173-010-0015-8

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

In this paper, flow systems which are commonly used in fittings elements such as contractions in ice slurry pipelines, are experimentally investigated. In the study reported in this paper, the consideration was given to the specific features of the ice slurry flow in which the flow behaviour depends mainly on the volume fraction of solid particles. The results of the experimental studies on the flow resistance, presented herein, enabled to determine the loss coefficient during the ice slurry flow through the sudden pipe contraction. The mass fraction of solid particles in the slurry ranged from 5 to 30%. The experimental studies were conducted on a few variants of the most common contractions of copper pipes: 28/22 mm, 28/18 mm, 28/15 mm, 22/18 mm, 22/15 mm and 18/15 mm. The recommended (with respect to minimal flow resistance) range of the Reynolds number (Re about 3000-4000) for the ice slurry flow through sudden contractions was presented in this paper.

【 授权许可】

Unknown