Ventilación Equilibrada

La ventilación equilibrada es una estrategia de HVAC que mantiene volúmenes iguales de suministro de aire fresco y escape de aire viciado, creando una calidad de aire interior óptima y maximizando la eficiencia energética. A diferencia de los sistemas unidireccionales tradicionales, la ventilación equilibrada controla activamente los flujos de aire entrantes y salientes a través de ventiladores dedicados y mecanismos de recuperación de calor.

Principio operativo básico

El sistema funciona según un concepto simple pero potente: por cada metro cúbico de aire fresco del exterior que ingresa a un edificio, se expulsa un volumen igual de aire interior. Este equilibrio evita desequilibrios de presión que pueden provocar corrientes de aire, portazos o problemas de infiltración, al tiempo que garantiza una calidad del aire constante en todo el espacio.

Componentes clave:

• ventilador de suministro: Trae aire fresco del exterior al edificio
• Ventilador de escape: Elimina el aire interior viciado
• Heat recovery ventilator (HRV): Transfiere energía térmica entre corrientes de aire
• Sistema de filtración: Limpia el aire entrante
• Controles inteligentes: Monitoree y ajuste las tasas de flujo de aire

Intercambiadores de aire

Air exchangers do exactly what their name implies: they exchange stale indoor air with fresh air from the outside. Although the energy savings derived from using an air exchanger is often minimal, the benefits to occupants are significant. As buildings have become tighter, less air moves through leaks around windows, doors, chimneys, etc. This can lead to an unhealthy build-up of odors, carbon dioxide, or volatile organic compounds (VOC). Opening a window may allow fresh air in, but at a considerable energy loss. Air exchangers provide the fresh air needed for occupants and minimize the energy losses for heating or cooling.

• Heat recovery ventilation (HRV) is a system that exhausts air from inside of a home and replaces it with outdoor air. During this process the system captures heat from the air being exhausted and uses it to preheat the air entering the home. The air flows (fresh and exhaust) don’t mix.
• Energy recovery ventilation (ERV) is a system that does everything that an HRV does with the addition of transferring moisture from the exhausted air into the air entering the home (in the winter) and restricting moisture from incoming air (in the summer). This can provide higher comfort for occupants by balancing the humidity levels inside the home.

Tipos de sistemas de ventilación equilibrados

Heat Recovery Ventilator (HRV)

A Heat Recovery Ventilator (HRV) is an essential component in modern HVAC systems, particularly valued for its ability to improve indoor air quality and energy efficiency. This device works by exchanging the stale indoor air with fresh outdoor air, while simultaneously transferring heat between the streams to recover a significant portion of the energy that would be lost in the process. This heat exchange process is pivotal during colder months, as it pre-warms the incoming air, reducing the load on the heating system, and in turn, lowering energy costs. Furthermore, HRVs are designed to balance the indoor humidity levels, thereby mitigating issues such as mold growth and promoting a healthier living environment. As energy efficiency becomes increasingly paramount in building design, HRVs are gaining traction, aligning with standards and compliance directives focused on sustainable and efficient building practices.

Transfiere calor sensible entre las corrientes de aire entrantes y salientes. Ideal para climas dominados por la calefacción donde la eliminación de la humedad no es crítica.

Energy Recovery Ventilator (ERV)

An Energy Recovery Ventilator (ERV) is a sophisticated HVAC component designed to enhance indoor air quality and optimize energy efficiency in residential and commercial buildings. By utilizing a heat exchanger, an ERV captures thermal and latent energy from stale outgoing air and transfers it to fresh incoming air. This process moderates the temperature and humidity of the incoming air, reducing the load on heating and cooling systems and ultimately lowering energy consumption. ERVs are particularly beneficial in climates with significant humidity variations, as they efficiently manage moisture levels while maintaining ventilation. Integrating ERVs into HVAC systems not only promotes a comfortable indoor environment but also supports sustainable building practices by decreasing reliance on energy-intensive temperature conditioning.

Recupera el calor tanto sensible como latente, gestionando la humedad junto con la temperatura. Esencial para condiciones cálidas y húmedas o espacios con alta generación de humedad.

Dedicated Outdoor Air Systems (DOAS)

Dedicated Outdoor Air Systems (DOAS) are innovative HVAC solutions designed specifically to manage fresh air ventilation and improve indoor air quality across various building environments. Unlike traditional HVAC systems that combine heating, cooling, and ventilation, DOAS focus solely on bringing in and conditioning outdoor air independently from the temperature control processes. This separation allows for more precise humidity control and significant energy savings, as it enables the primary HVAC system to concentrate on space conditioning without the additional burden of ventilation loads. DOAS are particularly beneficial in modern, airtight buildings where maintaining the optimal exchange of fresh air is crucial for occupant comfort and health. By efficiently integrating heat recovery technologies, DOAS can further enhance sustainability by reducing the energy required to condition incoming air while simultaneously meeting or exceeding the latest industry standards for indoor air quality.

Ventilación equilibrada a gran escala para edificios comerciales, a menudo integrada con sistemas de calefacción/refrigeración separados para una eficiencia óptima.

Especificaciones técnicas

Métricas de rendimiento:

• Tolerancia del equilibrio del flujo de aire: ±5 % para un funcionamiento óptimo
• Specific Fan Power (SFP): <1.5 W/(L/s) per ErP directive
• Efectividad de la recuperación de calor: >80% para cumplimiento de la UE
• Niveles de sonido: <35 dBA para aplicaciones residenciales

Consideraciones de instalación y mantenimiento

Requisitos de diseño

• Dimensionamiento y sellado adecuados de los conductos
• Ubicación estratégica de entrada/salida
• Integración con la infraestructura HVAC existente
• Puesta en marcha para la verificación del equilibrio del flujo de aire

Protocolo de mantenimiento

• Reemplazo del filtro cada 3-6 meses
• Limpieza anual del intercambiador de calor.
• Monitoreo del rendimiento del ventilador
• Calibración del sistema de control

Beneficios Económicos

Ahorros operativos:

• Reducción del 30 al 50 % en los costos de energía de ventilación
• Vida útil extendida del equipo HVAC a través de cargas reducidas
• Mejora de la productividad y la salud de los ocupantes
• Mayor valor y comerciabilidad del edificio

Impulsores del crecimiento del mercado:

• Mandatos del Pacto Verde de la UE
• Concientización sobre la calidad del aire interior después de la pandemia
• Demandas de integración de edificios inteligentes
• Volatilidad del costo de la energía