| 摘要 |
A greenhouse system comprises a supply of clean water, evaporators 4 for evaporating the seawater and a condenser 19 for condensing water vapour. The condenser may be in the form of an air to water heat exchanger or an air to air heat exchanger. Heat recovered in the heat exchanger is used to further aid evaporation of seawater. Alternatively, a mechanical vapour recompression unit can be used to recover heat. Air hung seaweed may be used as an evaporator. The temperature in parts of the greenhouse system is optimised for cultivation. The greenhouse system may also incorporate seawater treatment based on alternate magnetic poles which prevents limescale and results in the precipitation of fine crystals of calcium carbonate. The calcium carbonate can be collected by filtration and used in various applications, such as a cement substitute. As a by-product of the greenhouse system, cool air is made available for air conditioning. |
