| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray nozzle for snowfall, capable of preventing a nozzle body projected to a test chamber having a temperature equal to or less than a freezing point from being iced, and an environmental test chamber capable of falling snow by such a spray nozzle for snowfall.SOLUTION: A nozzle body 17 fixed to a ceiling 6 of a test chamber 2 having an atmospheric temperature equal to or less than the freezing point is prevented from being iced by arranging a cylindrical indoor side exterior member 27 around the nozzle body 17 and circulating air having a temperature higher than that of water jetted from the nozzle body 17 at a low speed in an air flow passage 43 formed by the indoor side exterior member 27. The air circulated in the air flow passage 43 can be made to enter the test chamber 2 without disturbing air in the test chamber 2. |
