Unidades de indução perimetrais – geralmente localizadas sob janelas – misturam o ar primário da unidade de processamento de ar com o ar secundário de dentro da sala. O fornecimento de ar processado em alta velocidade é induzido na unidade através de bicos restritivos. Isto cria uma pressão negativa em seu rastro, atraindo ar secundário para a sala para mistura e descarga. Um amortecedor regula o volume de ar ambiente que passa por uma serpentina de aquecimento controlada termostaticamente.
Essas serpentinas podem ser usadas com água gelada como serpentinas de resfriamento nos meses de verão. Se for utilizado apenas aquecimento, o sistema é conhecido como 'sistema de indução de dois tubos'. Com os dois tubos adicionais para água de resfriamento, o sistema é conhecido como 'sistema de indução comutável de quatro tubos'. Este último sistema proporciona um excelente controlo da temperatura do ar em várias zonas, mas exige muito capital e, portanto, é caro de instalar.
FREQUENTLY ASKED QUESTIONS
The high-velocity processed air delivery creates a negative pressure in the induction unit through the restrictive nozzles. As the processed air is induced into the unit, it creates a region of low pressure behind it, which draws in the secondary air from the room for mixing and discharge.
The damper in an induction system regulates the volume of room air passing through the thermostatically controlled heating coil. This allows for precise control over the amount of secondary air that is mixed with the primary air, ensuring optimal indoor climate conditions.
A two-pipe induction system uses only two pipes for heating, whereas a four-pipe changeover induction system uses two additional pipes for cooling water. The four-pipe system provides excellent control of air temperature in various zones but is more capital-intensive and expensive to install.
The four-pipe changeover induction system provides excellent control of air temperature by allowing for both heating and cooling modes. During the summer months, the system can switch to cooling mode, using chilled water to cool the air, and during the winter months, it can switch to heating mode, using hot water to heat the air. This allows for precise control over the indoor climate in different zones.
Induction systems offer several advantages in commercial buildings, including energy efficiency, flexibility, and zoning capabilities. They can also provide a comfortable and consistent indoor climate, which can improve occupant productivity and satisfaction.
The induction system’s ability to mix primary and secondary air can improve indoor air quality by introducing fresh air from the air-processing unit while also recirculating and filtering the room air. This can help reduce the concentration of airborne pollutants and improve overall indoor air quality.
The induction system’s ability to mix primary and secondary air can improve indoor air quality by introducing fresh air from the air-processing unit while also recirculating and filtering the room air. This can help reduce the concentration of airborne pollutants and improve overall indoor air quality.
