To provide a down-flow liquid film type whole evaporator, down-flow liquid film type evaporating method and measuring method of gas quantity for evaporating 100% of liquid by one-pass without causing evaporating residual liquid with a practical heat transfer area.
This down-flow film type whole evaporator 1 evaporates and vaporizes 100% of liquid by one-pass by making fluid flow down into a plurality of heat transfer tubes 7 heated at their outside. A liquid separator 3 for distributing and supplying liquid is provided at upper part of an upper part tube plate surface 8. A dam 6 having a cutout for equally guiding liquid from the tube plate surface to the respective heat transfer tube inside surfaces is fixed on upper end of the heat transfer tube. A metallic filler 9 for promoting heat transfer between the tube wall and liquid and preventing free fall of liquid drops is inserted into the heat transfer tube. Using the evaporator, 100% of liquid is evaporated by one-pass with a simple device and operation. By accurately measuring flow quantity of liquid before evaporation using such method, the wholly evaporated gas quantity is accurately and stably provided.
INOUE SHUICHI
HOSOMI TATSUHIDE
INAGAKI SUSUMU
INADA MINORU
Michiharu Soga
Yutaka Ikeya
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Taizo Shiraishi
Yoshikazu Takei
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