A device for covering a surface includes (a) a covering, each longitudinal edge of which is provided with a projecting element; (b) a rotatably mounted drum suitable for rolling up or unrolling the covering, and movable in translation on rails placed on either side of the surface; (c) a system for continuously locking/unlocking the projecting element in the rails during the translation of the drum. The projecting element includes a multitude of discreet elements distributed along each longitudinal edge separated from one another by an average distance (d).

A radiational cooling film providing a variable wavelength which determines a solar heat shielding rate according to the internal temperature of a facility and changes a wavelength conversion section of the film exposed to sunlight to radiate a necessary wavelength according to the growth stage of plants, and a wavelength conversion device and system using the same are provided. The radiational cooling film providing a variable wavelength includes a base layer including a first region and a second region on one surface, a heat barrier layer disposed on a part of the other surface of the base layer, the first region being provided with the heat barrier layer, and the second region being not provided with the heat barrier layer, and a wavelength conversion layer including a plurality of wavelength conversion sections separated from each other in each of the first region and the second region.

A foldable screen for a greenhouse is described. A foldable filter for greenhouse, comprises a foldable substrate and at least one stack of films on the foldable substrate, wherein said at least one stack of films is adapted to —reflect solar infrared radiations in the spectral range from 850 nm to 2,000 nm, and —be transparent to solar radiations in the spectral range from 400 nm to 750 nm, wherein said at least one stack of film comprises: —a first layer of TiO2, ZTO, Si3N4 or NbOx; —a second layer of Ag on top of the first layer, and —a third layer of dielectric on top of the second layer.

Disclosed herein is a system for facilitating artificial climate control, in accordance with some embodiments. Accordingly, the system may include a greenhouse enclosure, a condensation assembly, at least one sensor, a water collection compartment, and a processing device. Further, the greenhouse enclosure may include an internal space. Further, the greenhouse enclosure may be configured for generating a greenhouse effect. Further, the condensation assembly may be configured for condensing water vapor present in the interior space. Further, the condensation assembly may include at least one coolant dispenser, a heat exchanger, a coolant sensor, and at least one coolant dispensing actuator. Further, the at least one sensor may be configured for generating at least one sensor data. Further, the water collection compartment may be fluidly coupled with the condensation assembly. Further, the processing device may be communicatively coupled to each of the at least one sensor and the coolant sensor.

A screen for greenhouse or for outdoor cultivations is described. A foldable screen for greenhouse or for outdoor cultivations, comprising: a canvas, a substrate on one side of the canvas, arranged for preventing convective heat transfer through the screen; at least one stack of films mounted on or adhering to said substrate, wherein said stack of film is adapted to:—transmit at least 80% of radiations within the range from 400 nm to 2,000 nm when said radiations hit said film at normal incidence,—reject at least 70%, preferably at least 80% of radiations at normal incidence within the range from 3,000 nm to 35,000 nm.

Disclosed herein is a system for facilitating artificial climate control, in accordance with some embodiments. Accordingly, the system may include a greenhouse enclosure, a condensation assembly, at least one sensor, a water collection compartment, and a processing device. Further, the greenhouse enclosure may include an internal space. Further, the greenhouse enclosure may be configured for generating a greenhouse effect. Further, the condensation assembly may be configured for condensing water vapor present in the interior space. Further, the condensation assembly may include at least one coolant dispenser, a heat exchanger, a coolant sensor, and at least one coolant dispensing actuator. Further, the at least one sensor may be configured for generating at least one sensor data. Further, the water collection compartment may be fluidly coupled with the condensation assembly. Further, the processing device may be communicatively coupled to each of the at least one sensor and the coolant sensor.

A rail element is provided having a longitudinal axis, a first longitudinal end and a second longitudinal end longitudinally spaced from the first end along the longitudinal axis. The rail element includes a rail body longitudinally extending between the first longitudinal end and the second longitudinal end, the rail body defining therein at least one longitudinally extending first lumen having a longitudinally co-extensive transverse first opening, the rail element being configured for being mounted to at least one longitudinal support member in load bearing contact therewith in operation of the rail element. The rail element is configured for being mounted to the at least one longitudinal support member in a non-longitudinal manner A system for covering an area incorporating such rail elements is also provided, as well as a method for using such a system.

The invention provides an improved system and method for a self-contained portable greenhouse, comprising a sun-light deprivation curtain system, and with a structural arrangement that integrates the fluid (liquid and air) distribution and dispensing for such plant life-support systems as water supply and irrigation, hydroponics water, nutrient and aeration, CO2 dosing, fuel (for power generation), forced-air ventilation, whereby its associated system components are miniaturized to a scale amenable for low voltage direct-current power, which are housed within the structure. The invention also provides a system architecture wherein the electrical interface infrastructure for connecting with electricity-producing resources—such as solar panels or wind turbines—is integrated into the portable greenhouse, as is the internal electrical distribution and direct-digital control for the plant life-support systems. The invention allows for multiple portable greenhouses to be interconnected along with other distribution energy resources (DER) in a DC microgrid arrangement.

Top furling automated retractable greenhouse cover is a retractable cover for a greenhouse that is mounted on top of the greenhouse. Top furling automated retractable greenhouse cover comprises: a spine clamp, a left furling cover assembly, a right furling cover assembly, a hinge pin assembly, and an electrical control box. Left and right furling assemblies each comprise a curtain or cover, a furling rod, a furling motor, and a support arm. Electrical control box sends electronic signals to cause left and right covers or curtains to furl above the greenhouse when retracted and to unfurl down to the ground when extended to cover the greenhouse. The top-mounted design allows efficient use of gravity to apply tension to the furled rolls.

A light-deprivation system includes shades having a fixed end that form a perimeter that defines a growing environment, cables attached to a free end of each shade, a cable guide located near a pinnacle of the light-deprivation system, and a winch to draw the shades. The cables run from the free end of each shade, through the cable guide, to the winch. Operation of the winch draws the shades simultaneously to block substantially all light from sources external to the growing environment from reaching the growing environment.