24-unit housing development on València-Rogent Street
Renovation of the façade of a residential building in the Eixample district
The interior glazed enclosure. A double glass leaf is proposed, once again emphasizing the relationship between the interior and the exterior. Together with the positioning of the railing and the shutters, it fragments the façade plane.
The rhythm of the rooftop extension. The extension located above the original building is conceived as an upper gallery or loggia, understood in relation to the pre-existing structure. It is formed by folding shutters which, once opened, create a rib-like pattern with the same proportions and rhythm as the rest of the façade shutters, achieving a sense of uniformity in the proposal.
Materiality and colors. The shutters, railings, stucco, and glass are materials already present in the original building. They are proposed with harmonious tones drawn from the building’s color palette in order to achieve overall coherence.
In conclusion, the project’s façade identifies and enhances the restored original building, while intervening in the remaining façades with a language and compositional rhythm derived from a reinterpretation of the pre-existing structure. Furthermore, in relation to the façade length of the adjacent buildings, this distinction between the original building and the new intervention aligns with the urban scale of the neighborhood.
HVAC and domestic hot water systems. Each dwelling is equipped with an air-source heat pump system. Every unit has its own heat pump and an indoor Hydrobox unit for domestic hot water (DHW) production, independently controlled. Air-source heat pumps provide more useful energy in the form of heat than the electrical energy they consume, potentially achieving savings of up to 40% compared to conventional heating systems when used properly.
Ventilation system. Ventilation is provided through a mechanical double-flow system with heat recovery, with supply and return air distributed through ductwork.
Fresh air is supplied to each room, while extraction occurs through bathrooms and kitchens up to the roof level. This system improves indoor air quality and provides energy savings through heat exchange. It improves performance by 18.75% over the values established in DB HE and DB HR of the Spanish Technical Building Code (CTE), as the building envelope has been designed to meet nearly Zero Energy Building (nZEB) standards.
Energy rating. The building has an AA energy rating: A for non-renewable primary energy consumption and A for CO₂ emissions. This corresponds to a minimal energy consumption of 50 kWh/m² per year.