Energy Simulation vs. Energy Certificate

¿Qué es una simulación energética?

One Energy simulation it is a dynamic bioclimatic analysis that allows diagnose y optimise the project that the design team is working on and make changes that significantly affect energy behaviour.

The objective of energy simulation goes beyond regulatory verification or energy certification.

Ilustración 1 – Estudio de soleamiento y sombreado en renderizado 3D

¿Qué es un certificado energético?

Un certificado energético es una verificación reglamentaria que permite comparar consumos y demandas anuales según unos valores reglamentarios, verificar el cumplimiento de ahorro de energía DBHE del CTE y emitir un certificado de eficiencia energética, pero no permite identificar de manera exhaustiva qué debemos hacer para mejorar su comportamiento energético.

El objetivo de un análisis energético no puede ser comparar indicadores previamente prefijados con unos valores límite, sino poder hacer un ejercicio técnico-económico de los diferentes elementos que conforman el edificio y escoger aquellos que sean los más óptimos a lo largo de la vida útil del edificio.

En resumen, un certificado energético NO ES UNA HERRAMIENTA VÁLIDA para la toma de decisiones del proyecto porque utiliza una metodología demasiado básica.

Ilustración 2 – Ejemplo calificación energética

Un certificado energético NO ES UNA HERRAMIENTA VÁLIDA para la toma de decisiones del proyecto porque utiliza una metodología demasiado básica, la herramienta ideal es una simulación energética dinámica.

¿Qué beneficios tiene una simulación energética?

Identificar por qué partes de la envolvente del edificio hay más pérdidas energéticas
Encontrar la mejor volumetría y orientación solar según las características y condiciones bioclimáticas del proyecto
Optimizar composiciones y grosores de los cerramientos de la envolvente
Optimizar propiedades térmicas de las ventanas por orientación solar
Mejorar el thermal comfort del usuario
Escoger las mejores protecciones solares según orientación y incidencia solar
Evitar sobredimensionar los sistemas de climatización calculando las cargas térmicas
Escoger estrategias de ventilación natural para refrigerar
Medir y optimizar los consumos del proyecto
Se puede utilizar para optar a certificaciones internacionales como LEED
Acceder a ayudas como los Fondos Next Generation o PREE

Ilustración 3 – Ejemplo de reducción de la demanda de refrigeración

¿Cuál es el mejor momento para hacer una simulación energética?

Cuanto antes mejor. Hacer el modelado energético en una fase temprana del proyecto (anteproyecto o proyecto básico) permite conseguir un ahorro energético de hasta el 45% de media respecto a un edificio de referencia.

Gracias a la simulación energética, el equipo de diseño puede decidir qué sistemas serán los más eficientes, según las condiciones climáticas, el tipo de edificio que se quiere proyectar y su uso.

Ilustración 4 – Modelador energético Evalore

En Evaluate somos pioneros en España en el desarrollo de procesos de consultoría medioambiental para el sector real estate y oficinas. A menudo nuestros proyectos se enmarcan en el contexto de certificaciones ambientales internacionales como LEED, BREEAM, WELL o Passivhaus. El resultado es un proyecto optimizado, tanto en rendimiento ambiental como en coste.

Francesc Borrell Forner, Consultant in Sustainability and Energy Efficiency
Espacios Evalore SLP

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