The most stringent association in terms of energy efficiency, the Passivhaus Building Platform, is studying the new Royal Decree project by which the Technical Building Code is amended. This document was published on June 29 by the Ministry of Development, and is currently in hearing and public information process. The Platform is already working on some claims with the aim of improving it.
With this amendment, the Basic Document DB HE on Energy Saving is updated, aligning the Technical Building Code to the provisions of Directive 2010/31 / EU on energy efficiency of buildings. This Directive stipulates the obligation to review and update the minimum energy efficiency requirements periodically, at intervals not exceeding five years, in order to align them to technical advances in the construction sector.
The text is a step towards the achievement of energy efficient solutions which will address the implications for the construction sector arising from the adoption of Directive 2010/31 / EU of the European Parliament and the Council, May 19, 2010 on the energy efficiency of buildings. Under this norm, Member States must take the necessary measures to guarantee that minimum energy efficiency requirements are established, so that all public buildings built in Europe must be Almost No Energy Consumption as of December 31 2018 with the date for all privately owned buildings being December 31, 2020.
“We are heading on the right direction. It is an important step forward although it is true that, from PEP, we miss a time limit in the fulfillment of the objectives and some guidelines to follow “
Bruno Gutiérrez Cuevas, vice president of the Passivhaus Building Platform (PBP), has welcomed the proposed amendment of the Technical Building Code. In his words, “we are on the right track. This is an important step forward, although it is true that, from PBP, we are missing a time limit in the fulfillment of the objectives and some guidelines to follow “. That is why “from the Platform we will always be ready to propose improvements in the matter and, this is the reason why we are preparing a document of claims”, he explained to EnergyNews.
A more strict Technical Building Code
The reduction in the cases of building renovation exempted from complying with the Technical Building Code is highly valued, since until now there was an open door for the most irresponsible and now it has been closed. In relation to the new requirements, which are more stringent for the cases of renovation by climatic zones, Gutiérrez Cuevas believes that in such way “the limits of energy demand are improved” although, he has also stated that “cold temperature is being used to make this calculation” depending on the weather and, in this sense,” the cold of Burgos in winter can be as critical as the heat of Seville in summer”.
The Technical Building Code projects a contribution of 50% of renewable energies for the generation of Domestic Hot Water
Regarding the use of energy from renewable sources, for which the Technical Building Code projects a contribution of 50% for the generation of domestic hot water, the vice president of PBP has noted “the intent is to prioritize renewable energies because the lower the energy demand of the building is, the more weight the energy demand for domestic hot water (DHW) generation has”.
Gutiérrez Cuevas has also missed greater conciseness in other aspects such as, for example, air tightness, to which “a specific value” is not assigned. As PBP has already noted on previous occasions, the air quality inside the Almost No Energy Consumption Buildings takes on essential importance in a less demanding energy construction model. In this sense, the Passivhaus Platform maintains its commitment to Controlled Mechanical Ventilation (CMV) with energy recovery or double flow, although the Technical Building Code accepts other types of ventilation.
Passivhaus demands a defined horizon
As has been pointed out by the vice president of the Platform, the Passivhaus standard is “the most stringent” in terms of energy efficiency in building and renovation, and could mark the objectives of the Technical Building Code.
“A clear objective in order to know where the horizon is and to check where we stand now in our path towards its completion”.
In any case, Gutiérrez Cuevas has insisted on the importance of setting “a clear objective in order to know where the horizon is and to check where we stand now in our path towards its completion”. Gutiérrez Cuevas is convinced that “there will be revisions and amendments, which of course will serve to improve.”
A building or house with Passivhaus certification guarantees almost no energy consumption for air conditioning, allowing energy savings of up to 90% compared to a conventional building; avoids defects or pathologies in buildings that favor the formation of condensations or molds; and achieves excellent levels of thermal and acoustic comfort, as well as a high quality indoor air. In addition, it significantly reduces the carbon footprint and other environmental damages resulting from our excessive energy consumption and, more importantly, it is a key tool to reduce a country energy poverty ratio.
Since its creation in Spain in 2008, the PBP has been working as a non-profit association to raise awareness among public administrations, citizens, organizations and professionals on the need to establish measures that will help definitely commit to the construction and renovation of buildings and homes to turn them into Almost No Energy Consumption and, in this framework, boost the Passivhaus standard and disclose its advantages.