A livestock stall system which can take measures against the cold of winter and against the heat of summer while preventing worsening of the condition of the litter (the flooring) and maintaining a favorable environment inside the livestock stall. This livestock stall system includes a livestock stall in which livestock is raised, and a second pipe which is arranged so as to pass beneath the floor of the livestock stall and which adjusts the temperature of the floor surface of the livestock stall by circulating a medium through the inside of the pipe.

Kinetic energy devices, such as fans or blowers, are selected or controlled to attain a determined optimal overall average airflow for a volume within a livestock building to satisfy one or more predetermined livestock production objectives.

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.

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.

Heat exchangers extract heat from an air stream and deliver the heat to another airstream. The heat exchangers are modified with a filtration system to allow the heat exchanger to effectively run within the poultry house environment. The poultry house is retrofitted with at least four flat-plate cross-flow heat exchangers. The heat exchangers operate to meet at least the minimum ventilation rates for the young birds. As birds grow, heat exchangers operate in conjunction with building exhaust fans for ventilation needs. Multiple heat exchangers are located throughout the house to provide appropriate ventilation.

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 climate control system (20) for an animal house (10) is configured by determining a minimum ventilation curve for required minimum ventilation. A plurality of ventilation stages is created based on the minimum ventilation curve and the plurality of ventilation fans (23) in the climate control system, each stage providing a percentage of the required minimum ventilation. Creating the stages includes prioritizing the ventilation fans to create a selection hierarchy and determining a minimum stage ventilation and a maximum stage ventilation for each stage. Ventilation fans are selected following the hierarchy that provides the desired percentage of the minimum required ventilation. An increment between a maximum stage ventilation and a minimum stage ventilation for the next higher stage is defined, wherein the minimum capacity level is a function of the minimum capacity of the group of fans added to the next higher stage and the maximum capacity for the next higher stage is determined based on the increment.

A livestock-housing ventilation system for delivering air to the interior of a livestock housing comprises: a first air inlet arranged to provide a stream of ambient air to the interior of the housing: an outlet for air to be exhausted out of the housing: a reversible fan configurable to operate in a first airflow direction, in which the fan directs a flow of air from the housing towards the outlet, or a second airflow direction, in which the fan directs air away from the outlet and into the housing: a recirculation damper arranged between the reversible fan and the outlet; and a controller for controlling the fan. A controller for a ventilation system and a livestock-housing are also provided.

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 building to the outside of the building, wherein the primary pathway and the secondary pathway cross the cavity along about perpendicular axes; a primary ventilator for forcing an airflow in the building 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).