Praxis Resilient Buildings, engineering for healthy, comfortable buildings
Radon gas is a naturally occurring radioactive gas that can enter buildings. It is currently the second most predominant cause of lung cancer after tobacco.
The article presents an active cooling system using the supply air of the ventilation system with radiant ceiling panels, installed in a multi-residential building in the historic center of Girona, certified Passivhaus EnerPHit – Demand method.
A significant rise in temperatures is expected in the Mediterranean area in the coming years. Therefore, identifying and implementing effective strategies to reduce indoor temperatures in buildings and reduce the need for air conditioning is increasingly important.
Hormipresa Arctic Wall is a fully industrialised construction system, certified for passive houses in the warm-temperate climate zone, as the regular U-values of the exterior components are below 0,25 W/m²K and the connections meet the criteria of ‘thermal bridge free’.
This single-family home is located in Somió, Gijón, Asturias, Spain, and was designed by Architect Juan Ignacio Corominas, and certified as a PHI Low Energy Building by Oliver Style from Praxis. Patricia Borràs was the Passivhaus Designer on the project.
Lessons learned during the design and construction of Passivhaus buildings over the past 10 years in Spain, identifying the importance of the heat loss form factor, along with successes and pitfalls related to thermal insulation, windows, airtightness, ventilation and active systems.
With rising global temperatures and increasingly frequent summer heat waves, keeping cool in Passive House buildings has become a hot topic.
The article presents the results of a thermodynamic simulation study, comparing Wood Plastic Composite (WPC) floorboards with ceramic and stoneware floor tiles, heated with an electric underfloor heating system, for both dry and wet assemblies.
Energy consumption from DHW use is often higher than heating and cooling requirements in a residential Passivhaus. This is mainly due to the large losses inherent in storing and recirculating hot water, and because heating and cooling demands are very low.
Given the environmental impact of the construction sector- responsible for 40% of the total primary energy consumption of the European Union- reducing both the embodied energy of materials at manufacturing stage and minimising operational energy consumption in buildings are urgent tasks.
The U.S. EPA (Environmental Protection Agency) estimates that the air in our homes is 2 to 5 times more polluted than outdoor air. After spending so much time at home during successive COVID lockdowns, the importance of living in a healthy home has perhaps become clearer than ever before.
The Passivhaus standard is a voluntary energy certification standard for new and retrofitted buildings, aimed at providing maximum comfort for occupants, excellent indoor air quality and near-zero energy consumption.