Disclosed herein is an improved closed algae cultivation system that has an algae supplier, a first conduit, at least two containers, and at least two light light-emitting devices. The algae supplier is coupled to the at least two containers via the first conduit. Each container includes at least one sidewall, a bottom and an upper lid, which together define an accommodating volume for accommodating an algal stock culture from the algae supplier. Each container is made of at least one opaque material and includes a first opening disposed on one of the at least one sidewall, and a second opening disposed at the bottom. The at least two light-emitting devices are respectively coupled to the upper lid of each container and extend therefrom along the longitudinal direction to the container such that at least a portion of the light light-emitting devices is submerged in the liquid algal stock culture.本揭示內容的密閉式藻類養殖系統具有一藻類供應裝置,一第一連通管、至少二槽體與至少二發光裝置。該藻類供應裝置透過第一連通管分別與該些槽體耦接並形成流體連通。每一槽體由至少一側壁、一底部以及一上蓋所組成,共同界定出一容置空間,用以容納來自藻類供應裝置的藻類培養原液。每一槽體係以不透光材質製成且具有一第一開口與一第二開口。第一開口固設於該至少一側壁其中一者之上並與該第一連通管耦接。第二開口固設於該底部上,用以排出培養的藻類。至少二發光裝置分別與每一槽體的上蓋耦接,且往下延伸朝向該槽體容置空間使至少一部份該發光裝置浸沒至該藻類培養原液的液面下方。100‧‧‧密閉式藻類養殖系統110A、110B、110C‧‧‧槽體112A、112B、112C‧‧‧側壁114A、114B、114C‧‧‧底部116A、116B、116C‧‧‧上蓋120‧‧‧第一連通管130A、130B、130C‧‧‧第一開口132A、132B、132C‧‧‧第二開口140‧‧‧藻類供應裝置150A、150B、150C‧‧‧發光裝置
