Air performance
Posted: Mon Feb 10, 2025 8:40 am
Water curtains. They supply only hot air, which is heated by a two-way heat exchanger in the system. This main part is made of copper pipes with aluminum plates. The undoubted advantages of water curtains include ultra-economical power consumption, which is spent only on the operation of the fan blades. Most often, they are produced in a ceiling side version, but you can also find a more complex configuration (in the form of a column or ellipsoid), controlled remotely, using a remote control. They can be used in doorways and gates that remain open for a significant amount of time. Special series allow them to be used for openings 3-5 meters high. The disadvantages of water air curtains include the complexity of installation and the potential risk of freezing of the heat exchanger. Water air curtains are produced by such well-known manufacturers of climate control equipment as philippines mobile database international holding Ballu Industrial Group and the Russian scientific and production association Teplomash;
Electric air curtains. They have a wider range of capabilities, as they can supply not only hot air, but also cooled air. Models with a heater have a tubular heating element, a spiral heating element or a STITCH needle heater in their design. Tubular heating elements (which are a hollow steel rod with quartz sand, inside which there is a spiral with high ohmic resistance) are safer and can also withstand power surges without any problems. The most modern air curtains use ceramic heating elements (PTC thermistors), which are much more durable and economical than their predecessors. In addition, the design necessarily includes a thermostat, which allows you to turn off the device when the set temperature is reached, which allows you to reduce energy consumption somewhat.
Criteria for selecting an air curtain
When choosing a thermal curtain, it is necessary to start from specific conditions, taking into account the following parameters.
Curtain size
It is selected based on the size of the opening where the equipment will be installed, taking into account that the air flow should cover it with some reserve. You should not skimp on the size of the curtain, since otherwise the resulting gaps will contribute to increased unwanted air exchange. It should be taken into account that the maximum permissible area of the opening covered by one curtain is 12 m2, so sometimes you have to install several devices close to each other.
This indicator (the volume of air pumped by the unit in 1 hour) is fundamental for all air curtains. It is measured in m3/hour or m3/sec. The higher it is, the denser the air gap created and, accordingly, the more efficient the device. Experts recommend using equipment with a capacity of 700 m3/sec in standard situations to cover an opening 2.5 meters high. In all complex and non-standard cases, such calculations should be entrusted to professionals.
Electric air curtains. They have a wider range of capabilities, as they can supply not only hot air, but also cooled air. Models with a heater have a tubular heating element, a spiral heating element or a STITCH needle heater in their design. Tubular heating elements (which are a hollow steel rod with quartz sand, inside which there is a spiral with high ohmic resistance) are safer and can also withstand power surges without any problems. The most modern air curtains use ceramic heating elements (PTC thermistors), which are much more durable and economical than their predecessors. In addition, the design necessarily includes a thermostat, which allows you to turn off the device when the set temperature is reached, which allows you to reduce energy consumption somewhat.
Criteria for selecting an air curtain
When choosing a thermal curtain, it is necessary to start from specific conditions, taking into account the following parameters.
Curtain size
It is selected based on the size of the opening where the equipment will be installed, taking into account that the air flow should cover it with some reserve. You should not skimp on the size of the curtain, since otherwise the resulting gaps will contribute to increased unwanted air exchange. It should be taken into account that the maximum permissible area of the opening covered by one curtain is 12 m2, so sometimes you have to install several devices close to each other.
This indicator (the volume of air pumped by the unit in 1 hour) is fundamental for all air curtains. It is measured in m3/hour or m3/sec. The higher it is, the denser the air gap created and, accordingly, the more efficient the device. Experts recommend using equipment with a capacity of 700 m3/sec in standard situations to cover an opening 2.5 meters high. In all complex and non-standard cases, such calculations should be entrusted to professionals.