Plate evaporator

Details Plate evaporator Plate evaporator

1981-12-08

1986-05-06

Cline, William R.

Heat exchange

Flow passages for two confined fluids

Interdigitated plural first and plural second fluid passages

165146, 165147, 159 132, 159 286, F28F 1308, B01D 122

Patent

active

045865655

ABSTRACT:
A plate evaporator of the rising film type and/or the falling film type comprises several heat exchange plates essentially vertically arranged in spaced face-to-face relationship to define evaporation passages alternating with heating medium passages. Evaporation passages with increasing cross-sectioned area and decreasing perimeter in the flow direction of the feed liquid are formed by providing adjacent plates encompassing one evaporation passage with bulges (for example, ridges) which bulges, compared with imaginary planar plates, entail reduced volume of the evaporation passages. The size of said bulges (that is, the volume-reducing effect of said bulges) is gradually reduced in the flow direction of the medium to be evaporated. Thus, the cross-sectional area of the evaporation passages is increased while their perimeter is reduced in said direction.

REFERENCES:
patent: 266220 (1982-10-01), Strong
patent: 708712 (1902-09-01), Hill
patent: 1689927 (1928-10-01), Newhouse
patent: 2117337 (1938-05-01), Lobl et al.
patent: 2285225 (1942-06-01), Norris
patent: 2872165 (1959-02-01), Wennerberg
patent: 3412777 (1968-11-01), Donell et al.
patent: 3724523 (1973-04-01), Mattern
patent: 4182411 (1980-01-01), Sumitomo et al.
patent: 4301864 (1981-11-01), Kivikas et al.

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