NOVELTY - Light tent energy device comprises a light transmission heat storage greenhouse, a light gas collecting device (2), a heat preservation water tank, a heat preservation fermentation device, a light transmission floor (5), a light transmission heat preservation layer (6) and an outdoor heat collecting wall. The light transmission heat storage greenhouse comprises a light transmission roof panel (1.1) supported with a column frame. An indoor heat collecting chamber space (9) is located at the lower part of the light transmission roof panel.    USE - The device is useful for industrial production of methane, electricity and organic fertilizer, and in agriculture, sewage treatment, refrigeration and seawater desalination.    ADVANTAGE - The device is an integrated innovation of energy system engineering, agriculture and environmental protection; comprises large industrialized agricultural greenhouse (floor), a temperature adjusting tank, a large ventilation device, a large floating high temperature fermentation tank and a high temperature condensation device forming a common production equipment for simultaneous, high efficient and inexpensive industrial production of more than ten products; and reduces the construction investment and the production cost by 40-80%.    DETAILED DESCRIPTION - Light tent energy device comprises a light transmission heat storage greenhouse, a light gas collecting device (2), a heat preservation water tank, a heat preservation fermentation device, a light transmission floor (5), a light transmission heat preservation layer (6) and an outdoor heat collecting wall. The light transmission heat storage greenhouse comprises a light transmission roof panel (1.1) supported with a column frame. An indoor heat collecting chamber space (9) is located at the lower part of the light transmission roof panel. The light gas collecting device and the heat preservation water tank are located at the top or bottom of the indoor heat collecting chamber space. The heat preservation fermentation device and the light transmission floor are located at the middle, top or bottom of the indoor heat collecting chamber space. The light transmission floor is divided into at least one light transmission layer. The light transmission heat preservation layer is located on the light transmission roof panel or light transmission floor. The outdoor heat collecting wall set on the light transmission heat storage greenhouse is surrounded by an outdoor heat collecting field.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the light tent energy device.    Light transmission roof panel (1.1)    Light gas collecting device (2)    Light transmission floor (5)    Light transmission heat preservation layer (6)    Indoor heat collecting chamber space (9)