The present disclosure provides using stratification of air to reduce the amount of air in a greenhouse to manage and a conditioning chamber to precondition air prior to the air having contact with plants. A light deprivation chamber is provided with a centerline vent and operable louvres to recycle warm air and to be able to reduce the area of the building to heat by closing the light deprivation cover to create a smaller chamber to heat and recycle to conserve heat and take advantage of the heat from grow lights. The present disclosure further provides being able to cycle warm air from an upper air sink chamber back into the an air intake/conditioning chamber to conserve energy and using air tube fans to deliver quality conditioned air from a conditioning chamber to all the plants.

This disclosure describes a positive pressure greenhouse including one or more plants disposed on a plant table surface, wherein the plant table surface is disposed above ground level and has an area below the plant table surface and above the ground, one or more upper wall tubes including one or more upper wall tube fans disposed above the plant table surface, one or more lower sidewall tubes comprising one or more lower side wall tube fans disposed below the plant table surface which may be at or near ground level. The one or more lower sidewall tube fans may be configured to draw air from the area below the plant table surface, wherein air is further drawn down from above the plant surface table, e.g., the area of the upper wall tubes and upper wall tube fans, to ground level of the greenhouse. The one or more lower wall tube fans may also be configured to blow air into the area below the plant table surface wherein the blown air further rises above the plants and into the area of the upper wall tubes and upper wall tube fans.

A method of growing plants comprising determining preferential light wavelengths for promoting growth of a plant. The method further comprises constructing one or more light filtering panels arranged to filter natural sunlight or artificial light to produce filtered light comprising the preferential wavelengths. In addition, the method comprises locating one or more plants in a structure constructed at least in part from one or more of the panels. The method also comprises illuminating the structure from outside with natural sunlight or artificial light to pass through the one or more panels and produce the filtered light wherein the filtered light is directed to radiate the plants.

The darkening screen comprises two fabrics, namely a first fabric (10) which comprises in machining direction first strips of film material and first threads (2) in between the first strips, and a second fabric (11) which comprises in machining direction second strips of film material and second threads (6) in between the second strips. The first (2) and the second threads (6) of the first (10) and the second fabric (11) have water transporting capacity. In order to obtain improved moisture transporting properties whilst maintaining a low hemispherical light transmission the first threads (2) are aligned with said second threads (6) and are situated, in a direction perpendicular to said first (10) and second fabric (11), opposite to said second threads (6) to form pairs of first and second threads. In a number of these pairs the first thread (2) is connected at different locations by cross-connections (16) to the second thread (6), more particularly by means of a first yarn (4) of the first fabric which extends in the cross-machining direction, to thereby fix the first fabric (10) to the second fabric (11). The cross-connections (16) preferably hold the first threads (2) at least at the location of the cross-connections (16) against the second threads (6).

The darkening screen comprises two fabrics, namely a first fabric (10) which comprises in machining direction first strips of film material and first threads (2) in between the first strips, and a second fabric (11) which comprises in machining direction second strips of film material and second threads (6) in between the second strips. The first (2) and the second threads (6) of the first (10) and the second fabric (11) have water transporting capacity. In order to obtain improved moisture transporting properties whilst maintaining a low hemispherical light transmission the first threads (2) are aligned with said second threads (6) and are situated, in a direction perpendicular to said first (10) and second fabric (11), opposite to said second threads (6) to form pairs of first and second threads. In a number of these pairs the first thread (2) is connected at different locations by cross-connections (16) to the second thread (6), more particularly by means of a first yarn (4) of the first fabric which extends in the cross-machining direction, to thereby fix the first fabric (10) to the second fabric (11). The cross-connections (16) preferably hold the first threads (2) at least at the location of the cross-connections (16) against the second threads (6).

The invention relates to an electric seedling greenhouse, The illumination intensity in the seedling greenhouse is detected by the illumination transmitter, the light intensity information in the seedling greenhouse is transmitted to the information processing module, the light intensity preset value required by plants is set in the information processing module, the shading rate of the first sunshade device is not equal to the shading rate of the second sunshade device, when the light intensity is higher than the preset value, the light intensity collected by the illuminance transmitter is transmitted to the information processing module, and it is judged to meet the value of starting sunshade device, then analyze the light intensity to automatically select the corresponding shading rate of the sunshade device to open and complete the shading. It solves the technical problem that the existing seedling greenhouse needs to manually control the sunshade device, and the shading rate of the sunshade device cannot be changed after it is set, if it needs to be changed, the shading cloth can only be replaced, and it cannot be flexibly shaded, and its practicability is not high.

The invention relates to an electric seedling greenhouse, The illumination intensity in the seedling greenhouse is detected by the illumination transmitter, the light intensity information in the seedling greenhouse is transmitted to the information processing module, the light intensity preset value required by plants is set in the information processing module, the shading rate of the first sunshade device is not equal to the shading rate of the second sunshade device, when the light intensity is higher than the preset value, the light intensity collected by the illuminance transmitter is transmitted to the information processing module, and it is judged to meet the value of starting sunshade device, then analyze the light intensity to automatically select the corresponding shading rate of the sunshade device to open and complete the shading. It solves the technical problem that the existing seedling greenhouse needs to manually control the sunshade device, and the shading rate of the sunshade device cannot be changed after it is set, if it needs to be changed, the shading cloth can only be replaced, and it cannot be flexibly shaded, and its practicability is not high.

A greenhouse screen strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product, wherein at least some of the strips comprise a film material in the form of a single- or multilayer polyester film is disclosed. The film material has a transparency of at least 93.5% and is provided with at least a first anti-reflective coating or layer on a first side of the film material.

A greenhouse screen strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product, wherein at least some of the strips comprise a film material in the form of a single- or multilayer polyester film is disclosed. The film material has a transparency of at least 93.5% and is provided with at least a first anti-reflective coating or layer on a first side of the film material.

A window film structure for cooling and heating is disclosed. The window film structure for cooling and heating according to the present invention comprises: a front side film which is attached to a window through an adhesive layer provided at one side surface of the front side film; a back side film; a lattice plate which is provided between the front side film and the back side film and includes a number of transverse members and a number of longitudinal members which are combined along the lengthwise direction of the transverse members; and a first cover, a second cover, a third cover and a fourth cover which seal the lattice plate by being attached along the circumference of the lattice plate, wherein the front side film and the back side film have the thickness of 0.1˜10 mm, are transparent or semi-transparent, and are tinting processed.