PROBLEM TO BE SOLVED: To provide a method for supplying low-temperature carbon dioxide gas and a carbon dioxide gas generator, which are capable of achieving supply of the low-temperature combustion gas.SOLUTION: According to the present invention, there are provided a method for supplying low-temperature carbon dioxide gas and a carbon dioxide gas generator. Here, combustion gas sent to a hot air chamber and temporarily cooled is subjected to secondary cooling using air taken into the hot air chamber (natural air inside and outside a house, the temperature thereof is lower than the combustion gas). The cooled combustion gas is fed into the house from the hot air chamber. According to the present invention, therefore, high temperature injuries can be avoided and improved efficiency growth and/or increase yield of crops can be attained.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】低温化した炭酸ガスの供給方法と、この低温化した燃焼ガスの供給を達成できる炭酸ガス発生装置とを提供する。【解決手段】温風室に送られ、かつ一次的に降温した燃焼ガスに、当該温風室に取込んだ空気(燃焼ガスより低温のハウス内外の自然の空気)を利用して、二次降温し、降温した燃焼ガスを、温風室よりハウス内に供給することにより、高温障害を無くし、作物生育の効率化、及び/又は、収穫量の向上が図れる。【選択図】図2