TY - JOUR

T1 - A theoretical model of uniform flow distribution for the admission of high-energy fluids to a surface steam condenser

AU - Wang, J.

AU - Priestman, G. H.

AU - Wu, D.

PY - 2001/4

Y1 - 2001/4

N2 - An analytical study is made of the perforated pipe distributor for the admission of high-energy fluids to a surface steam condenser. The results show that for all perforated pipes there is a general characteristic parameter M (kD/Lf), which depends on the pipe geometry and flow properties. Four cases are considered based on the value of the characteristic parameter M. (1) When M ≥ 1/4, momentum controls and the main channel static pressure will increase in the direction of the streamline. (2) When 1/6 ≤<M<1/4, the momentum effect balances friction losses and the pressure will decrease to a minimum, and then increase in the direction of flow to a positive value. (3) When 0<M<1/6, friction controls and the pressure will decrease to a minimum, then increase slowly, but the total pipe static pressure difference will always be negative. (4) When M=0, a limiting case when the ratio of the length to the diameter is infinite. This analysis is useful not only for the design of perforated pipe distributors for turbine condensers over a wide range of dimensions, fluid properties, and side hole pressure but also for many other technical systems requiring branching flow distribution.

AB - An analytical study is made of the perforated pipe distributor for the admission of high-energy fluids to a surface steam condenser. The results show that for all perforated pipes there is a general characteristic parameter M (kD/Lf), which depends on the pipe geometry and flow properties. Four cases are considered based on the value of the characteristic parameter M. (1) When M ≥ 1/4, momentum controls and the main channel static pressure will increase in the direction of the streamline. (2) When 1/6 ≤<M<1/4, the momentum effect balances friction losses and the pressure will decrease to a minimum, and then increase in the direction of flow to a positive value. (3) When 0<M<1/6, friction controls and the pressure will decrease to a minimum, then increase slowly, but the total pipe static pressure difference will always be negative. (4) When M=0, a limiting case when the ratio of the length to the diameter is infinite. This analysis is useful not only for the design of perforated pipe distributors for turbine condensers over a wide range of dimensions, fluid properties, and side hole pressure but also for many other technical systems requiring branching flow distribution.

UR - http://www.scopus.com/inward/record.url?scp=0035303136&partnerID=8YFLogxK

U2 - 10.1115/1.1359237

DO - 10.1115/1.1359237

M3 - Journal Article

AN - SCOPUS:0035303136

SN - 0742-4795

VL - 123

SP - 472

EP - 475

JO - Journal of Engineering for Gas Turbines and Power

JF - Journal of Engineering for Gas Turbines and Power

IS - 2

ER -