PROBLEM TO BE SOLVED: To provide a cultivation system with a culture medium which can aim at an effective use of carbon dioxide considered to be a greenhouse gas, while being extremely simple and capable of reducing the cost with respect to a refrigerator.SOLUTION: In a cultivation system with a culture medium in which carbon dioxide gas is supplied to a cultivation room 1, a culture medium is supplied to a fix planting tray 2 to cultivate a plant, and the plant after picking is stored in a vegetable refrigerator 3, the vegetable refrigerator 3 comprises a heat exchanger 3A which solidifies liquid carbon dioxide into dry ice by adiabatic expansion to cool the interior of the vegetable refrigerator 3.COPYRIGHT: (C)2015,JPO&INPIT【課題】冷蔵庫に関して極めて簡単でコストを抑えることができるとともに、温暖化ガスとされる二酸化炭素の有効利用が図れる培養液栽培システムを提供する。【解決手段】栽培室1に二酸化炭素ガスを供給し、定植トレイ2に培養液を供給して植物の栽培を行うと共に、採取後の植物を野菜冷蔵庫3に保存する培養液栽培システムにおいて、野菜冷蔵庫3は液体二酸化炭素を断熱膨張によりドライアイスに固化して野菜冷蔵庫3の内部を冷却する熱交換器3Aを備える。【選択図】図1
