| 摘要 |
PURPOSE: A water curtain heating apparatus is provided to minimize the used amount of underground water, and to maximize heating effects with water by heating water on a pipe located around nozzles, and to minimize heating costs of the apparatus in winter. CONSTITUTION: A water curtain heating apparatus includes a plurality of nozzles(21) which is used for spraying water to for a water membrane on a greenhouse and a water pipe(20) installed on the greenhouse for protected cultivation. A water supply unit supplies water in a recovery tank to the water pipe. A water recovery unit collects water sprayed on the greenhouse to the recovery tank. A heating unit heats the water in the water pipe and installed on the water supply pipe. A chemical supply unit includes a chemical tank and a connection pipe connecting a circulation pipe. |
