PROBLEM TO BE SOLVED: To provide a vacuum evaporation type fresh water generator excellent in heat efficiency.SOLUTION: A vacuum evaporation type fresh water generator 1 comprises: a heater 3 for heating supplied raw seawater by heat from a heat source for generating steam; a sealed type container body 2 into which the steam generated in the heater 3 is introduced; decompression means (water ejector) 7 for decompressing inside of the container body 2; a condenser 4 for cooling the steam in the container body 2 with cooling seawater for generating fresh water; and a pre-heater 5 for heating a part of the cooling seawater discharged from the condenser 4 by the steam in the container body 2 for supplying the same to the heater 3 as raw seawater. Respective heat transfer pipes 40, 50 of at least one of the condenser 4 and the pre-heater 5 have an inner surface or an outer surface processed by irregularity processing. Respective heat transfer pipes 30 of the heater 3 have an inner surface or an outer surface processed by irregularity processing.SELECTED DRAWING: Figure 6
【課題】熱効率の優れた真空蒸発式造水装置を提供する。【解決手段】真空蒸発式造水装置1は、供給された原料海水を熱源からの熱により加熱して蒸気を生成する加熱器3と、加熱器3で発生した蒸気が導入される密閉型の容器本体2と、容器本体2内を減圧する減圧手段(水エゼクタ)7と、容器本体2内の蒸気を冷却用海水により冷却して淡水を生成する復水器4と、復水器4から排出された冷却用海水の一部を容器本体2内の蒸気により加熱して加熱器3に原料海水として供給する予熱器5とを備える。復水器4および予熱器5の少なくとも一方の各伝熱管40,50は、内面または外面が凸凹加工されている。加熱器3の各伝熱管30は、内面または外面が凸凹加工されている。【選択図】図6
VACUUM EVAPORATION TYPE FRESH WATER GENERATOR
真空蒸発式造水装置
2018-07-26
Patent
Electronic Resource
Japanese
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