Abstract: Systems, methods and computer-readable media are provided for controlling environmental conditions to control latent and sensible loads in a plant grow chamber. The density of plant-0 receptacles in the grow chamber is such that, when plants are held in the plurality of plant receptacles, evapotranspiration contributes to the latent load so that the latent load exceeds a sensible load, resulting in evapotranspirative cooling. This shift in the energy balance allows for greater energy savings, as compared with conventional indoor farms that focus on removing heat from the growth environment. Environmental conditions may be controlled to achieved desired conditions, such as the optimum ratio of harvest weight yield to energy consumption under given constraints. Light modules for enabling plant growth suitable for controlled environment agriculture are also described.

Abstract: A lighting assembly is provided that is configured for use with a hydroponic farm, preferably a hydroponic farm utilizing horizontal racks. The light assembly includes one or more LED boards affixed to a thermally conductive mounting fixture. The number and location of the LED boards which are mounted to the fixture is primarily dependent upon the size and layout of the hydroponic racks within the hydroponic farming facility. A light shield, which surrounds the LED boards and the mounting fixture, extends the entire length of the light assembly. The light shield is sealed to both light assembly end caps, thereby providing a completely sealed lighting unit.

Abstract: A lighting system is provided that is configured for use with one or more hydroponic towers. The primary component of the lighting system is a light tube that includes one or more LED boards affixed to a central, actively cooled, mounting fixture. The LED boards may be affixed to one side or to multiple sides of the mounting fixture. A tethering system locates each light tube within the hydroponic farming facility, the tethering system configured to (i) allow for thermal expansion and contraction of the light tube, (ii) maintain the desired location of the light tube, (iii) simplify removal of the light tube, (iv) prevent accidental disengagement from the top mounting fixture while still allowing limited movement of the light tube, and (v) allow disengagement from the bottom mounting fixture when undue stress is applied to the light tube.