| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a desalination plant that does not require a large amount of energy, and has a simplified mechanism and improved maintenance side.SOLUTION: The desalination plant is comprised of: a heat source; an evaporator having a container housing a heat transfer tube and spraying means; raw water supply means; control means; draining means; a gas-liquid separator; a condensing part; and a fresh water recovery part. Raw water supplied by the raw water supply means is sprayed by the spraying means to the heat transfer tube in which a heat medium supplied with energy from the heat source flows. The control means sets in the spraying means a time for drying the heat transfer tube and controls the spraying means so that the raw water is sprayed intermittently or periodically. The raw water having come in contact with the heat transfer tube evaporates, and the steam passes through the gas-liquid separator, condenses in the condensing part, and is recovered as fresh water in the fresh water recovery part. Raw water remaining unevaporated in the evaporator is drained by the draining means.</p> |
