PURPOSE: To reduce the pressure loss of primary fluid, flowing between pipes, by a method wherein the flow pipe of secondary fluid, which is provided with the same surface area as the surface area of the pipe under a condition that the section thereof is true round, is deformed specially so as to be thinner with respect to the flow direction of primary fluid.
CONSTITUTION: Both of the flow pipes 6a, located at the upstream side of primary fluid A, and the flow pipes 6b, located at the downstream side of the same, are deformed into elliptical or flattened round pipes for example, so as to be thinner with respect to the flow direction of the primary fluid and keep the same surface area as the surface area of them under a condition that the section thereof is round. According to this constitution, flow paths between the flow pipes 6a and between each of the flow pipes 6b located in the rear are widened, therefore, the pressure loss may be reduced and, further, turbulent flow effect in the back sides of respective flow pipes 6a, 6b, which are located in fore-and-back relation of secondary fluid, with respect to the flow direction of the primary fluid A may be prevented.
SAKUMA KIYOSHI
UMEMURA HIROYUKI
YAMADA MAKOTO
SESHIMO YUTAKA
FUJII MASAO
TSUKAMOTO IKUO
| JPS4938661A | 1974-04-10 | |||
| JPS54105065U | 1979-07-24 | |||
| JP57500081Y | ||||
| JP18004015Y1 |