A fan for use in agriculture which has a BLDC motor which allows for varying the speed of the fan to vary the airflow rate of the fan and vary the efficiency of the fan. A ventilation system for use in a livestock confinement building to maximize a rate of growth of the livestock. A process for maximizing the growth of livestock in a livestock confinement building by controlling the airflow in the livestock confinement building.

A fan for use in agriculture which has a BLDC motor which allows for varying the speed of the fan to vary the airflow rate of the fan and vary the efficiency of the fan. A ventilation system for use in a livestock confinement building to maximize a rate of growth of the livestock. A process for maximizing the growth of livestock in a livestock confinement building by controlling the airflow in the livestock confinement building.

A ventilation apparatus for ventilating a building. The ventilation apparatus comprises a casing comprising: a cavity for housing a removable heat-exchange cartridge; a service door providing access to the cavity; a primary and secondary pathways fluidly connecting the inside of the budding to the outside of the budding, wherein the primary pathway and the secondary pathway cross the cavity along about perpendicular axes; a primary ventilator for forcing an airflow in the budding through the primary pathway; and a controllable secondary ventilator for forcing a controllable airflow through the secondary pathway. The ventilation apparatus, when the casing houses the heat-exchange cartridge, has the primary ventilator forcing an inflow of air through the primary pathway, and (ii) the controllable second ventilator for controllably forcing either an outflow or an inflow of air through the secondary pathway. The ventilation apparatus, without heat-exchange cartridge, has only inflow(s) forced through the pathway(s).

Trickle bodies for the air conditioning of, in particular, animal housings, that possess only partially latticed layer elements. Trickle bodies are formed of a plurality of sandwiched layer elements that, in known trickle bodies, are formed of corrugated and completely latticed plastics foil. The trickle bodies formed of such layer elements possess a relatively low stability and a limited evaporation capacity. The plastics-formed layer elements of the instant invention are produced by injection molding, allowing layer elements having corrugation heights of more than 12 mm to be formed. Such trickle bodies are more stable, enable a high evaporation capacity and are, moreover, also less permeable to light.

An acoustic system can track gas emissions by exploiting the nostril-accessible nasal pathways of an animal. Actuators and microphones used in the apparatus can be similar to those currently found in cell phones, which in turn make the acoustic apparatus small and rugged. The nostril geometry can be mapped using sound waves, similar to the mapping done by an acoustic rhinometer. Where acoustic rhinometers assume a constant speed of sound to measure changes in geometry, acoustic approaches as disclosed herein can assume constant geometry to measure changes in the speed of sound. Approaches disclosed here are particularly useful with any gas, such as (for example) methane, hydrogen, helium, etc. that has a speed of sound higher than other typical gaseous components of exhaled air, such as nitrogen, carbon-dioxide, oxygen, etc.

An air purifier (100) includes a control unit (110). The control unit (110) is configured to acquire occupancy information indicating whether or not a person is in a room. The control unit (110) is configured to switch operational control based on a type of pet specified by a user and the occupancy information. When a person is not in the room, the control unit (110) preferably performs operational control to increase an airflow compared to that when a person is in the room.

Disclosed is an inline flow control system with parallel flow solenoid valves. In particular, in certain embodiments, the flow control system includes a flow control device with switch ports in electrical communication with a high float switch and a low float switch. The flow control device includes a first solenoid valve to control fluid flow through a first fluid pipe based on the high float switch, and a second solenoid valve to control fluid flow through a second fluid pipe based on the low float switch. In certain embodiments, the flow control system includes a manual bypass valve for a third fluid pipe. The fluid pipes are in parallel flow. In certain embodiments, the flow control system is devoid of an electronic controller. Accordingly, the inline flow control system can be retrofitted for existing flow systems with minimal cost and effort.

An acoustic system can track gas emissions by exploiting the nostril-accessible nasal pathways of an animal. Actuators and microphones used in the apparatus can be similar to those currently found in cell phones, which in turn make the acoustic apparatus small and rugged. The nostril geometry can be mapped using sound waves, similar to the mapping done by an acoustic rhinometer. Where acoustic rhinometers assume a constant speed of sound to measure changes in geometry, acoustic approaches as disclosed herein can assume constant geometry to measure changes in the speed of sound. Approaches disclosed here are particularly useful with any gas, such as (for example) methane, hydrogen, helium, etc. that has a speed of sound higher than other typical gaseous components of exhaled air, such as nitrogen, carbon-dioxide, oxygen, etc.

A livestock central air conditioner and a livestock house, relates to the art field of livestock house and equipment. The livestock central air conditioner including a heat exchange unit 1, a cooling component 2, an axial fan 3 and an air duct 4; the livestock house including a house 6 and the livestock central air conditioner; a ventilation fan 63 is provided at the location of the exhaust outlet 62 on the house 6.

In devices for air-conditioning stalls having evaporation members which can be supplied with fluid by means of spray pipes which are arranged thereabove, the deflectors are provided above the spray pipes, which deflectors have to be removed for cleaning purposes and temporarily stored elsewhere, which is complex and can lead to damage to the deflectors. The disclosed device for air-conditioning stalls has a provision for deflectors to have hinge connections to retention members. The deflectors can thereby be pivoted upwards in order to clean spray pipes without the deflectors having to be completely removed from the retention members.