PROBLEM TO BE SOLVED: To provide a system and a method for safely and easily producing gas suitable for CA (Controlled Atmosphere) storage at low cost, and a storage system and a storage method using the storage gas.SOLUTION: A storage gas production system 10 for producing gas to be supplied to a storage house 80 for storing agricultural products or horticultural products in a fresh state includes: first supply means 14 for supplying raw material air in a compressed state to a first gas separation membrane 11 first separation means 21 for supplying the supplied raw material air to the first gas separation membrane 11 and obtaining a water vapor-enriched gas and water vapor-removed air second supply means 16 for supplying the water vapor-removed air to a second gas separation membrane 12 and second separation means 22 for separating the supplied water vapor-removed air into nitrogen-enriched gas and oxygen-enriched gas using the second gas separation membrane 12. The water vapor-enriched gas obtained by the first separation membrane 11, and the nitrogen-enriched gas separated by the second separation means 22 are converged to obtain the storage gas.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】安全に、且つ低コストに簡便にCA貯蔵に適したガスを製造できるシステム及び方法並びに当該貯蔵用ガスを用いた貯蔵システム及び貯蔵方法を提供すること。【解決手段】農産物又は園芸産物を生鮮状態で貯蔵する貯蔵庫80に供給するガスを製造する、貯蔵用ガスの製造システム10であって、原料空気を加圧した状態で第1ガス分離膜11に供給する第1供給手段14と、供給された原料空気を第1ガス分離膜11に供給して水蒸気富化ガスと水蒸気除去空気とを得る第1分離手段21と、該水蒸気除去空気を第2ガス分離膜12に供給する第2供給手段16と、供給された水蒸気除去空気を第2ガス分離膜12により窒素富化ガスと酸素富化ガスとに分離する第2分離手段22とを有し、第1分離膜11により得られた水蒸気富化ガスと、第2分離手段22により分離された窒素富化ガスとを合流させることにより貯蔵用ガスを得る。【選択図】図1
