AW-SL air replacement ventilation system

Uncontrolled airflow will completely destroy the capturing and suppressing capabilities of the exhaust hood and the ceiling smoke hood. The carefully designed low-speed supply air device (SL) can completely eliminate the uncontrolled airflow within the kitchen-specific area. This device can help AIRJET achieve the lowest exhaust volume.

In commercial kitchen environments, the required air flow speed for space ventilation is the main influencing factor for system energy consumption. Traditionally, high-speed mixing or low-speed mixing systems are adopted. However, a new alternative option has emerged, which can enhance thermal comfort compared to the mixing systems. This is called displacement ventilation.

The traditional mixed air intake vents send high-speed air at the roof level. The intake air "mixes" with the indoor air to meet the set point requirements for indoor temperature. Theoretically, the temperature from the ground to the roof should be consistent. However, due to the high concentration of heat in commercial kitchens, stratification naturally occurs. As a result, after adjustment, the air loses some of its cooling effect when mixing with the hot air from the roof.

Studies have shown that if the mixing vents are located near the smoke hood, the high-speed airflow will disrupt the cooking hot plume, pulling some of it out of the smoke hood (effectively causing the smoke hood to "overflow"), thereby further increasing the heat load in the space.

The AW-SL replacement ventilation system can directly introduce low-speed air into the lower part of the kitchen, allowing the air to naturally stratify. This results in a higher temperature in the upper part of the kitchen while maintaining a lower temperature in the working area. This enables the improvement of indoor air quality in the kitchen without the need to purchase an air conditioning system. Compared to the traditional mixed fresh air system, the application of the replacement ventilation system can reduce the exhaust volume of the smoke hood by 15%.