| 摘要 |
<p>PURPOSE:To provide an indirect type heating device, keeping a temperature distribution in uniform, optimum for energy saving and especially suitable for the rearing of animals as well as the cultivation of plants. CONSTITUTION:A seed bed 10 is provided on a production bed 7, received in a frame 8, by fixing it to shelves 11 through a radiation heat reflecting aluminum sheet 9 and black plastic radiation pipes 12, having a small heat conductivity and circulating heat medium liquid (ethylene glycol containing 5-10% of moisture), having a small heat conductivity and heated, in the lengthwise direction of the seed bed 10, are arranged on the aluminum sheet 9 with a predetermined space and are fixed to the production bed 7 by hairpin piles 13. Two pieces of radiation pipes 15 for production are buried in the lengthwise direction of the production bed 7 at the depth of 50cm in the ground of the production bed 7 while aluminum sheet 16 is laid immediately below the radiation pipe 15 lengthwisely. Because of the combination of heat medium liquid, having a small heat conductivity, and a radiation pipe having a small heat conductively, heat can be radiated uniformly across along distance.</p> |
