Air Curtain

The idea of having an invisible barrier across the door to allow unimpeded access more effectively prevent the flow of temperature, dust, odors and insects to the Cross, is attractive in itself but adds to this the cost savings by reducing energy consumption and the idea becomes more compelling, especially as the air curtains are relatively inexpensive items.

Suitable for industrial applications
Keep warm air from the insulated cold storage or refrigeration is the number one objective is still made a mockery of this principle when the freezer of the refrigerator doors are wide open and, in some cases, wedged open to help the movement or storage of perishable goods.

self-generated pressure changes from one type of non-circulatory air curtain jet induces ambient air into the creek. When the air curtain is installed outside a room cold air spills into the room and continues to do so until the pressure builds up to a point where the airflow deviates outward.

The pressure-form-chimney effect change when the cold air in the room is denser than warm air outside. The higher the ceiling, the higher the pressure becomes within the cold room. The speed of the air curtain must be sufficiently high to offset the outward pressure at the bottom of the cooler.

Wind pressures occur because of the conversion of the pressure of the wind speed in static pressure. Of particular importance is the stability of the air curtain, which is headed by its momentum output. The air curtain must be able to withstand variations in pressure between the inside and outside the cold room. The dynamics of output should be steady enough and strong enough to stabilize the air on the floor. It is therefore essential to integrate the controls in the design of the air curtain to increase strength and speed to ensure a stiff curtain of air and reduce speed to avoid overheating and unnecessary transfer of moisture at the door.

In refrigeration applications, a large volume of turbulent air hitting the ground to form dozens of ice on the freezer floor - it is not desirable or necessary, the airflow must be adjusted so that it barely touches the ground. This can be accomplished by adjusting air dampers or the fan speed to achieve the desired speed. Drafts are eliminated by ensuring that the air flow is vertical. The air curtain can be mounted on the hot side and cold from the cooler with the same efficiency.

The volume of air flow varies with the temperature difference between the internal air and external air exchange is caused by differences in temperature heat. Using the known values of the temperature difference inside and outside, the densities of pressure differences, and, finally, the flow of air through the opening can be calculated.

Properly installed air curtains to cut loss of cold air and reduce moisture, thus reducing the load on the refrigeration or air conditioning plant and, hence, energy savings by reducing the operating time of the compressor, maintenance, gas and refill intervals. These units are an alternative to fast acting roller doors and curtains made of PVC slats and can be located above or adjacent to industrial doors to create a powerful seal through the opening, keeping the cold air in while providing complete visibility and access. This means that forklift drivers need not leave their car to open and close doors to go from one region to another is much easier and productive. Unlike curtains plastic slats, which quickly become opaque through use an air curtain provides 100% visibility at all times. Units were installed in the loading bays, factories, warehouses and production facilities, such as food processing and pharmaceuticals, where the temperature differentials are encountered abroad.

Air Canada system.