| 摘要 |
PURPOSE: A cooling and heating apparatus is provided to circulate inner air in a ceiling part, and supply room temperature air from the lower to the upper part, thereby preventing a deflection of temperature in upper and lower parts. CONSTITUTION: A heating apparatus(1) heats the flown air. A room temperature air discharging pipe(3) is positioned on the bottom surface in the hydroponic greenhouse, and a discharging hole(31) is formed in the outer periphery at the same time. An outer air intake pipe(5) flows outer air to the upper part of the blower fan. A heating wire is reeled in a space between the inner and outer pipes of the room temperature air discharging pipe. |
