planning:building_services:ventilation:passive_house_when_reasoning_becomes_passion
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— | planning:building_services:ventilation:passive_house_when_reasoning_becomes_passion [2016/05/30 17:02] (current) – created francis.bosenick@passiv.de | ||
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+ | ====== Passive House: when reasoning becomes a passion ====== | ||
+ | |||
+ | Author: Renate Haiden (Publish Factory Media Production GmbH) | ||
+ | \\ Original: http:// | ||
+ | |||
+ | **The construction of buildings using the Passive House method has long been a tradition in many regions worldwide. Engineers in Austria demonstrate the sensible way of doing things.** | ||
+ | [{{ : | ||
+ | Passive House buildings are not " | ||
+ | |||
+ | ===== Fascinating facts ===== | ||
+ | According to the " | ||
+ | |||
+ | Experts agree that the Passive House standard is achieved when maximum comfort is provided using an extremely low energy demand. The precise definition is as follows: "A Passive House is a building in which thermal comfort (ISO 7730) can be achieved solely by post-heating or post-cooling the fresh air mass volume required for a good quality of indoor air (DIN 1946), without the need for additional air recirculation." | ||
+ | |||
+ | ===== Where energy matters ===== | ||
+ | |||
+ | The keywords "less heating", | ||
+ | |||
+ | If several energy-intensive devices are being used, the amount of heat dissipated is accordingly high. In the best case, this can be used directly for heating. It is therefore essential to clarify the usage-related boundary conditions right at the start of the planning phase – such as the question, whether the building is to be used for residential purposes, or as a doctor' | ||
+ | |||
+ | ===== Anything' | ||
+ | |||
+ | Why a Passive House works in each case is easily explained and is due to the key component: the ventilation system. Air, which also undertakes the task of heating, is supplied to each living area together with the fresh outdoor air. However, this will only work if the heat losses are kept low by means of appropriate insulation and windows. A number of myths are told about this ventilation technology; the absurd notions include "it causes draughts", | ||
+ | |||
+ | Individual preferences for building materials do not need to be excluded, because nowadays a good level of thermal protection is possible with all types of construction methods. Therefore, it is possible to construct a building as a solid, timber, pre-fabricated, | ||
+ | |||
+ | ===== Infopoints about the Passive House concept ===== | ||
+ | |||
+ | * Passive House Institute – Department Innsbruck, www.phi-ibk.at | ||
+ | * Passivhaus Austria, www.passivhaus-austria.org | ||
+ | * Passive House Institute, www.passiv.de | ||
+ | * Informationsgemeinschaft Passivhaus, www.ig-passivhaus.de | ||
+ | * International Passive House Association, | ||
+ | * Platform Innovative Gebäude, www.innovativegebaeude.at | ||
+ | |||
+ | [{{ : | ||
+ | ===== We asked ... ===== | ||
+ | |||
+ | ==== ... Architect DI Heinrich Schuller of ATOS Architekten, | ||
+ | |||
+ | **You recently completed a construction project for a doctor' | ||
+ | \\ The doctor' | ||
+ | |||
+ | **How long was the construction period?** | ||
+ | \\ The pre-fabricated walls and roof were delivered to the site and assembled within two weeks. As a result of this, the converted practice could be inaugurated just four months later. | ||
+ | |||
+ | **The practice is equipped with the latest medical technology. How high is the electricity consumption here?** | ||
+ | \\ Compared to a residential property, this practice consumes electricity during the daytime, that is, when the photovoltaic system is producing electricity. We have covered an area of 56 m² with this system and it produces about 10.000 kilowatt hours of electricity, | ||
+ | |||
+ | **In your opinion, what are the reasons for the scepticism towards Passive House concepts?** | ||
+ | \\ This is due to unfounded rumours: the costs are too high, the windows can't be opened, there is the risk of mould growth. Here it is necessary to provide information and advice so that these misconceptions can be promptly disproven. Today, no-one would buy a car or a washing machine which does not conform to the latest standards. The Passive House standard is the most up-to-date building standard that we have, so why should we refrain from using it? | ||
+ | |||
+ | **Is the cost argument untenable in reality?** | ||
+ | \\ Yes, because the mistake being made here is that apples are being compared with oranges. You can't compare a house built to the minimum quality standard, which is less expensive perhaps, with a Passive House, which offers so much more living comfort – and that's just one aspect – that can't be expressed in figures. | ||
+ | |||
+ | [{{ : | ||
+ | ===== We asked ... ===== | ||
+ | |||
+ | ==== ... Ing. Günter Lang, Director of Passivhaus Austria, www.passivhaus-austria.org ==== | ||
+ | |||
+ | **Does a potential exist in the health services sector for the construction of buildings to the Passive House standard?** | ||
+ | \\ As a matter of fact, this building concept isn't very common in this sector. We maintain a database with projects and up until now we have had a veterinary practice in Schwanenstadt, | ||
+ | |||
+ | **Wasn' | ||
+ | \\ Of course! For a long time, Austria played the leading role in the area of energy efficient construction, | ||
+ | |||
+ | It is a fact that all new buildings – including those in the private sector – must be almost energy self-sufficient by that date. All public buildings at the federal, state and local levels must comply with this provision by the year 2018. This directive also applies for retrofits which affect more than 25 percent of the building envelope. The standard must be achieved through the interaction of energy efficiency and decentralised energy production. However, ways in which this building directive is implemented have not been stipulated. The EU member states have presented their national plans, but these differ greatly on many points, for example whether the energy consumption should also include applications such as the electricity consumption of computing equipment, or whether it should only be based on the energy expenditure that relates to the building itself, that is, heating, cooling, hot water and lighting. | ||
+ | |||
+ | **Does the reason for the slow implementation of the Passive House standard lie in the cost?** | ||
+ | \\ Under the guise of " | ||
+ | |||
+ | **Why doesn' | ||
+ | \\ Because discussions on Passive House buildings are based on the aspect of energy savings. Although it is a fine thing, that is not the real advantage. The real added value is the living comfort offered by these buildings, which is a convincing argument especially with reference to medical practices or health centres. Why should I build something which is not good for health if I can have the opposite? There are no dust mites or mould in Passive Houses, and there is practically no indoor air pollution. Despite the windows being shut, the indoor climate is still optimal – and a very big nuisance, namely noise, stays outside! There are already enough studies about this, for instance by the Institute for Applied Ecology or by DI Dr. med. Hans-Peter Hutter of the Institute for Environmental Hygiene of the Vienna University of Medicine. | ||
+ | |||
+ | **Can Passive House standards also be maintained in hospitals? | ||
+ | \\ In principle, there is nothing that says otherwise. Of course there are some areas, perhaps the operating theatre, for which different requirements apply. | ||
+ | |||
+ | [{{ : | ||
+ | ===== We asked ... ===== | ||
+ | |||
+ | ==== ... Dipl.-Ing. Laszlo Lepp, research assistant, Passive House Institute – Department Innsbruck, www.phi-ibk.at ==== | ||
+ | |||
+ | **Does a potential exist in the health services sector for the construction of buildings to the Passive House standard?** | ||
+ | \\ Passive House construction is a concept and not a branch-specific usage type. Presently, residential buildings are still very much a focus, but other types of use are also following suit. Doctors' | ||
+ | |||
+ | **Does this require a change in thinking, passion or engineering? | ||
+ | \\ Naturally one must be open to new ideas and have an interest in progressive technologies or topics. It is my experience that this is much more pronounced in the case of medical professionals and it isn't a question of trends or lifestyle concepts. | ||
+ | |||
+ | **What are the main obstacles? | ||
+ | \\ The lack of information, | ||
+ | |||
+ | **What is the reason for the acceptance threshold that still exists?** | ||
+ | \\ Most decisions for construction are made on the basis of the investment costs and are not considered over the life cycle, and this is flawed logic. This flawed logic also prevails when loans are taken out, because if I have low running costs, then liquidity will increase and repayments will be easier. In Austria we additionally have the problem that many public authorities and funding bodies use the energy certificate as a basis, which strictly speaking is not proof for a Passive House. | ||
+ | |||
+ | **What exactly does Passivhaus Austria have to offer?** | ||
+ | \\ At the moment practically everyone in the construction sector claims to know about Passive Houses. In practice however, this is not the case yet. We therefore try to network the partners who really have expertise in this field. You can find architects, property developers, manufacturers and contracting companies who are true experts. | ||
+ | |||
+ | **What important message would you give to interested property developers? | ||
+ | \\ The Passive House concept is cost-effective if it is considered over the useful life of a building. In addition, the aspects relating to comfort and well-being are quite central for doctors in particular, and no other type of construction offers these to such an extent. There are no draughts, no condensation, | ||
planning/building_services/ventilation/passive_house_when_reasoning_becomes_passion.txt · Last modified: 2016/05/30 17:02 by francis.bosenick@passiv.de