Air Quality Process heat exchangers are unlike all traditional exchangers. They process the air by passing it through smooth tubes surrounded by hot and cold water whereas other systems just circulate air around smooth or finned tubes which are heated and cooled from the inside.

The stainless steel tubes forming the vertical exchanger are cylindrical except at their two ends. The ends are pressed square so that they can be welded together and to leave a large number of spaces between the round tubes. These spaces are filled by the hot and cold water. The welded tube assembly is contained in a cylindrical housing also made of stainless steel and forms a totally sealed open battery.

Dim lights

High efficiency

In addition, as the air passes through the smooth tubes in turbulent mode, these air conditioners are the only ones to obtain a blown air with relative humidity levels of close to 100 % as well as having performance levels similar to the most advanced traditional systems in terms of heat exchange surface and delta Tlm.

Integral fan

Located above the tubes, it is operated by motor with electronic variable speed unit and is housed in the centre of the exchanger in a casing sealed off from the circulating air and cooled by the cold water surrounding it.

Hot and cold supplies

• Cold by glycoled or chilled water from an external chiller unit.
• Hot by integrated electric elements or by heat exchangers included in the air conditioner and supplied with external hot water.

Operation

The previously mentioned components basically process a certain volume of air so that it reaches the required temperature, humidity and speed levels.

♦ Ventilation The air is sucked through the tubes by the fan which then blows it into the room.			♦ Heating If the air conditioner also has a drying function, the air passes through the tubes of the integrated hot exchanger and is heated when it comes into contact with them.
♦ Cooling When it comes into contact with the internal exchange surface the air is cooled and dehumidified to a greater or lesser extent.			♦Humidification A system of humidisonic nozzles (water + compressed air) is integrated into the unit. It turns the water into a mist of microscopic droplets which are homogenised with the circulating blown air and can saturate it without water being deposited on the products.
♦ Condensation The water condensed inside the cold tubes flows by gravity into the conical base located under the heat exchanger and is instantly evacuated to the exterior of the room.			♦ Regulation The unit is equipped with a high precision patented psychrometer. It measures and maintains temperature variations to within 0.5 °C and regulates relative humidity to within 3 %, even for saturation values.
♦ Decontamination Up to 20 % of contaminant particles are specifically trapped in the tubes and evacuated with the condensates.			♦ Diffusion Direct or through textile ducts. The ceiling air conditioners and some floor air conditioners blow the air by their integrated plenums. The floor air conditioners are equipped with resistant synthetic textile domes and ducts which are lightweight and washable. Where necessary these cylindrical ducts are porous (surface diffusion) with slits or holes. They are easily installed over long distances on twin cables.