An apparatus for controlling conditions in a plant cultivation facility includes a lighting system arranged in connection with plants present in an environmentally sealable and closable cultivation facility; a hydronic cooling arrangement for lowering or impeding the rise of temperature in the cultivation facility, the cooling arrangement comprising a cooling manifold present in connection with plants in the cultivation facility and a heat recovery arrangement for utilizing excess heat generated in the cultivation facility. The heat recovery arrangement includes a heat storing system. The heat recovery arrangement includes one or more condenser dryers/coolers for collecting water and/or heat absorbed in the indoor air of a cultivation facility and a heat pump assembly for transferring the heat, accumulated in the heat storing system by way of the cooling arrangement's circulation water and/or the condenser dryer's/cooler's circulation water, into an independent secondary circuit.

An apparatus for controlling conditions in a plant cultivation facility includes a lighting system arranged in connection with plants present in an environmentally sealable and closable cultivation facility; a hydronic cooling arrangement for lowering or impeding the rise of temperature in the cultivation facility, the cooling arrangement comprising a cooling manifold present in connection with plants in the cultivation facility and a heat recovery arrangement for utilizing excess heat generated in the cultivation facility. The heat recovery arrangement includes a heat storing system. The heat recovery arrangement includes one or more condenser dryers/coolers for collecting water and/or heat absorbed in the indoor air of a cultivation facility and a heat pump assembly for transferring the heat, accumulated in the heat storing system by way of the cooling arrangement's circulation water and/or the condenser dryer's/cooler's circulation water, into an independent secondary circuit.

The invention provides a horticulture lighting arrangement (1000), comprising (i) a lighting system (100) configured to provide horticulture light (101) having a controllable spectral power distribution, and (ii) a control system (300) configured to control the spectral power distribution of the horticulture light (101); wherein in an operational mode of the horticulture lighting arrangement (1000) the horticulture lighting arrangement (1000) is configured to provide the horticulture light (101) according to an on-off schedule wherein consecutively an on-period (D) and an off-period (N) are applied, wherein:—the horticulture light (101) comprises one or more of first horticulture light (1011) comprising a wavelength selected from the range of 400-600 nm, red light (1012) comprising a wavelength selected from the range of 600-700 nm, and far-red light (1013) comprising a wavelength selected from the range of 700-800 mn;—the on-period (D) lasts in in the range of 12-20 hours and the off-period (N) lasts in the range of 4-12 hours, wherein the on-period (D) comprises an end-of-day period (EOD) at the end of the on-period (D), wherein the end-of-day period (EOD) lasts in the range of 0.5-4 hours;—wherein during a substantial of the on-period (D) before the end-of-day period (EOD) a R/Fr ratio, defined as a ratio I600-700 nm/I700-800 nm of red light (1012) and far-red light (1013), is selected from the range of 4-20, and during a substantial part of the end-of-day period (EOD) the R/Fr ratio is selected from the range of 0.1-4.

A plant growing system including a plant growing apparatus and methods of making and using the plant growing apparatus to control at least one physical condition of the environment to cultivate plants in plant growing trays associated with the plant growing apparatus.

A system, method and apparatus for creating laminar air flow inside an indoor growing environment is described. Ambient air inside the indoor growing environment is drawn into one or more fan casings coupled to an air intake manifold. The ambient air is then expelled from the air intake manifold, through two or more air outlet ports and into to or more air tubes, respectively. Each of the air tubes comprises a plurality of air tube orifices that are sized and positioned along each of the plurality of air tubes to expel the ambient air inside the air tubes in such a way as to create a laminar air flow through plants arranged on either side of each of the air tubes.

An indoor gardening appliance includes a cabinet defining a grow chamber within the cabinet. The gardening appliance further includes environmental control system configured to adjust atmospheric conditions in the grow chamber. The gardening appliance may be operable to activate a compressor of the environmental control system to circulate a refrigerant through a sealed system of the environmental control system. The refrigerant enters the compressor at a suction side of the compressor and the refrigerant entering the compressor has a pressure that corresponds to a saturation temperature below the freezing point of water. The gardening appliance may be further operable to flow air across a heat exchange surface of the sealed system. The heat exchange surface of the sealed system is upstream of the grow chamber with respect to the air flow direction, and the heat exchange surface has a temperature above the freezing point of water.

System, methods, and devices may control air flow, temperature, relative humidity, substrate temperature, substrate moisture, carbon dioxide concentration, photoperiod, irrigation, light intensity, spectrum, and vapor pressure deficit. The system may comprise water and air pumps, sensors, air and water distribution apparatus, lights, heaters, foggers, sensors, and electronic system control dedicated to control the environment on individual or multiple growing platforms. The present disclosure provides the ability to provide microclimate control to optimize the environment at the plant or shelf level to optimize plant yields and production resources. The present disclosure may utilize an open or closed plant production configuration depending on the desired plant outcome and plant species.

System, methods, and devices may control air flow, temperature, relative humidity, substrate temperature, substrate moisture, carbon dioxide concentration, photoperiod, irrigation, light intensity, spectrum, and vapor pressure deficit. The system may comprise water and air pumps, sensors, air and water distribution apparatus, lights, heaters, foggers, sensors, and electronic system control dedicated to control the environment on individual or multiple growing platforms. The present disclosure provides the ability to provide microclimate control to optimize the environment at the plant or shelf level to optimize plant yields and production resources. The present disclosure may utilize an open or closed plant production configuration depending on the desired plant outcome and plant species.

A controlled and closed agricultural system includes a growing space and an air handling system having an enthalpy wheel and cooling coil. The enthalpy wheel is capable of transferring sensible and latent heat and is positioned in and rotatable through a recirculating air duct and an outside air duct. The recirculating air duct is in fluid connection with the growing space and one or more recirculation fans, while the outside air duct is in fluid connection with one or more outside air fans positioned to cause outside air to flow countercurrent to recirculating air. A cooling coil is positioned within the recirculating air duct, downstream of and in series with the enthalpy wheel. The cooling coil circulates a heat transfer fluid to remove additional heat from the recirculating air.

Greenhouse comprised of a ridge beam extending some distance above its roof defining two elongated side zones at either side of the ridge beam. The ridge beam is comprised of one or more elongated hollow spaces and with one or more closable openings in both side zones. The openings fluidly connect the exterior of the greenhouse with its interior and may be closed at one side and opened at its other side depending on the direction of the wind.