A cooling system for a light emitting diode (“LED”) assembly includes a fluid configured to absorb heat at the LED assembly, a heat exchanger coupled to one or more substrates of the LED assembly, where the heat exchanger is configured to exchange heat between the LED assembly and the fluid, and a pump configured to circulate the fluid along the LED assembly and the heat exchanger, where the fluid exhibits a turbulent flow at the LED assembly, the heat exchanger, or both, while circulated by the pump.

An emitter and a method for emitting light are described. The emitter has a substrate with a substrate surface and at least one LED element arranged on the substrate surface for generating the light to be emitted. An active cooling unit for cooling the at least one LED element has at least one cooling channel. The at least one cooling channel is arranged on the substrate surface in a beam path of at least one portion of the light to be emitted, which can be generated by means of the at least one LED element, for redirecting the light to be emitted.

A debubbler system includes a hollow enclosure that includes an inlet and an outlet directing the flow of coolant fluid into and out from the hollow enclosure, respectively. The debubbler system further includes a check valve to exhaust gaseous bubbles in the coolant fluid out of the hollow enclosure to reduce the gaseous bubbles in the coolant fluid. The debubbler system also includes a vent tube fluidly coupled to the check valve, such that the vent tube is positioned opposite a weighted member that is fixed relative to a central axel that rotates about a rotation axis. The debubbler system may be part of a cooling system for cooling electronics systems, such as light-emitting diode (LED) lighting systems.

An illumination apparatus includes a case, a plurality of oscillators configured to generate electromagnetic waves, and housed in the case and arranged two-dimensionally, a window unit configured to emit therefrom the electromagnetic waves, and disposed on a first side of the case, a plurality of inflow holes configured to allow fluid to flow into the case, and disposed at positions at which the electromagnetic waves from the window unit propagate, and a discharging unit configured to discharge the fluid, which has flowed into the case, out of the case, and disposed on a second side of the case, which is an opposite side to the first side. When the oscillator is viewed from the window unit, a part of the oscillator is located on an inner side of the inflow hole, and the fluid which has flowed into the case through the inflow hole reaches the oscillator.

A system, apparatus, and method for thermal regulation in a tiered rack growth system. A contact heat exchange converter is provided to remove thermal energy of a light fixture for the tiered rack growth system. A contact thermal exchange cavity defined in the contact heat exchange converter is dimensioned to cooperatively receive an arcuate thermal sink of the light fixture. A circulation conduit communicates a dense medium coolant to remove thermal energy carried by a thermal mass of the contact heat exchange converter.

A water-cooled grow light apparatus has a housing, cooling components, and light components. The housing stores the cooling and light components. The cooling components regulate the heat produced by the light components and include at least one pump, one radiator, and one fan. While the cooling components are regulating the heat, the light components produce the full spectrum of light.

An integrated sensor assembly provides multiple sensing modalities to monitor an agricultural environment, and may be employed in or used with controlled environment agriculture (CEA) systems to control and maintain improved growth conditions for various plants. In one exemplary implementation, an integrated sensor assembly includes sensors to monitor parameters important to plant growth, such as a natural light sensor, an air temperature sensor, a relative humidity sensor, an air flow sensor, a carbon dioxide (CO2) sensor, and a remote infrared (IR) temperature sensor. The sensors are mounted onto a single circuit board, which is then placed inside a housing for protection from the ambient environment. The housing can include one or more openings and apertures to facilitate sensing with protective covers where appropriate. A USB port can be included to supply electrical power and transfer of data to and from the integrated sensor assembly (e.g., to provide plug-and-play functionality).

A LED light fixture having a mixture of red and white LEDs, as well as any combinations of UVA, UVB, UVC LEDs. The ratio of outputs from these LEDs may be adjusted to achieve a desired germicidal effect. The light fixture is liquid-cooled using a cooling tube that directly cools the power supply and the LED flexible printed circuit.

In a device a crop is cultivated in an at least substantially daylight-free environment, wherein the crop is exposed in an at least substantially fully conditioned cultivation space (10) to actinic artificial light from an array of artificial light sources (30) present in the cultivation space. During a cultivation cycle a power output of the artificial light sources (30) is adapted to an energy absorption of a part of the crop (50) illuminated thereby such that the crop close to each of the array of artificial light sources is subject to an at least substantially constant and at least substantially mutually equal vapour deficit.

A debubbler system includes a hollow enclosure that includes an inlet and an outlet directing the flow of coolant fluid into and out from the hollow enclosure, respectively. The debubbler system further includes a check valve to exhaust gaseous bubbles in the coolant fluid out of the hollow enclosure to reduce the gaseous bubbles in the coolant fluid. The debubbler system also includes a vent tube fluidly coupled to the check valve, such that the vent tube is positioned opposite a weighted member that is fixed relative to a central axel that rotates about a rotation axis. The debubbler system may be part of a cooling system for cooling electronics systems, such as light-emitting diode (LED) lighting systems.