To prevent carry-over of liquid refrigerant due to gas refrigerant.
A downward flow liquid film type evaporator includes a heat transfer tube group, a refrigerant spray device, a gas refrigerant outlet tube, and a cover 60. The heat transfer tube group is constituted by a plurality of heat transfer tubes. The refrigerant spray device 50 is arranged above the heat transfer tube group and stores liquid refrigerant of supplied vapor-liquid two-phase refrigerant to allow the liquid refrigerant to flow downward. The gas refrigerant outlet tube is positioned above the refrigerant spray device, and has a discharge port from which vapor refrigerant evaporated on the surface of the heat transfer tube group is discharged. The cover 60 is located above the refrigerant spray device and covers it. The cover 60 has a side edge portion 62 having an uneven shape in which convex portions 62b and concave portions 62a are alternately arranged.
JPH0755370 | EVAPORATING DEVICE FOR LOW-TEMPERATURE LIQUEFIED GAS |
JPS5153650 | SHITSUSHIKI KANSHIKIKUMIAWASEREIKYAKUTO |
WO/2016/197112 | PASSIVE HEAT AND MASS TRANSFER SYSTEM |
HATTORI KEITA
YO KUNITADA
OGATA JUNJI
FUKUOKA MOTOHIKO
Next Patent: DOWNWARD FLOW LIQUID FILM TYPE EVAPORATOR