| 摘要 |
<p>PURPOSE:To prevent the short transferring of vapor phase, by providing circulating passage of saturated liquid connecting the lower end part of each neighboring section each other and providing contraction part near inlet and outlet of circulating passage and moreover, providing free flowing part for flash evaporation between both contraction. CONSTITUTION:The saturated liquid circulating passage 10 connecting each lower end part of both section 1 2, is provided and the fixed contraction 11, 12 are provided with inlet and outlet of the passage 10 and moreover, the free flowing part 13 to be able to carry out flash evaporation, is provided between both contraction 11, 12. Saturated liquid in the section 1 is passed through the contraction 11 and is entered the free flowing part 13. Here, flash evaporation is carried out and a small quantity of vapor phase is generated, in case of static Pi is Pi<Psi and gas-liquid two phases stream in the part 13 is transferred to the section 2 passing through the contraction 12. By this method, condition of the flash evaporation at the part 13 is changed by the change of flowing quantity and changing quantity of the sum of pressure loss DELTAP1+DELTAP2 at both contraction is made small and also, fluctuation of height of liquid surface in both sections is made small.</p> |
