GAETANO DE CARO

Dry coolers are simple and reliable equipment. Their operating principle is based on a sensible heat exchange between air and water where: air is drawn in by fans through a finned coil, while water (or a mixture of water and glycol) flows through the tubes that make up the coil and cools when the (cooler) ambient air laps the surface of the latter. Fins are used to increase the overall heat exchange surface area so that the equipment can be as compact and efficient as possible.

Drycoolers are simple and reliable equipment. Their principle of operation is based on a sensible heat exchange between air and water where: air is drawn in by fans through a finned coil, while water (or a mixture of water and glycol) flows through the tubes that make up the coil and cools when ambient air (colder cooler) laps the surface of the latter. Exchange coils, with a "V" arrangement within the cooler, consisting of copper tubes and aluminum fins. The angle between the coils, the diameter of the tubes, and the thickness and length of the fins, are sized to ensure the best heat exchange performance, for a given fluid and air flow pressure drops.

Ideal for water saving maintaining a high efficiency. All operations are managed by PLC with the possibility of remote management in “Industry 4.0” mode. Suitable for both industrial and HVAC fields of application. The adiabatic cooler, sometimes called adiabatic dry cooler or dry cooler with adiabatic pre-coolers, is designed to work with both air and water, with particular attention to efficiency. The external air is used to cool the liquid during dry operation and it is pre-cooled only in hot periods with wetting cycles of about 15 seconds during adiabatic operation (“adiabatic pre-cooling”).

The PAD-V adiabatic system is the optimal solution for increasing the efficiency of air systems, with capacities from 75 to 1,100 kW. Dry operation during cold periods: ambient air is drawn in and conveyed to the heat exchange coils (where the fluid to be cooled passes through): no water in the circuit, as during standard dry cooler operations. Energy use is also optimized by electronically modulated fan speeds based on temperatures. Adiabatic operation during hotter periods: outside air passes through the humidifier pack to be pre-cooled, before being conveyed to the finned coils and performing its cooling function: efficiency is increased. This also makes it possible to work at lower ambient temperatures.