Do we dam the houses or the heat insulation?

The discussion about the Energieeinsparverordnung ENEV 2000 is one of the most interesting present compartment-topics surely. Critics and advocates from the industry, tries from planning-offices, from the science and politics as well as from associations to represent its partially quite different opinion publicly and to justify. How should the builder, whom this actually involves, still see through here? This is at the reconstruction to be assessed differently surely since one can take the corresponding measures constructively into account in the planning-phase and this has an effect only low in the total-construction-costs. Differently, it looks with the old building-continuance. In this short contribution, in excerpts different statements are summarized and are compared.
An one-sided bearings causes uncomfortable residential-conditions, that can be moderated only with high technical expenditure, on the Dämmung alone in our widths. [5] from the 8 relevant Energieeinspargrößen [1] is concentrated particularly on the heat-management for itself. This is called in the practice, the better the insulation (Thicken, is, so less heat hikes through the outside-walls outside. A very interesting aspect for the too expectant high turnover-profits at Polystyrol and other Dämmstoffe. This is still substantiated with the argument of the creation from 400 000 additional jobs if the old building-substance is packed in. These increase-investments of about. 15 billion DM annually are allowed to or should put exclusively the housing-owners on the table. [2] this through Mr. Dr things.-Ing. Freytag represented economic viability-calculation for the additional insulation could be subordinated no principal economic viability. [3] all other attempts of an economic representation can be understood only very badly. Betz, Kreißig and Schöch refer to a meaningful use of Wärmedämmverbundsystemen in the old building also as in the reconstruction in its summary about the Öko-Bilanz to. Already within less than 2 years, the energy used through the production of the WDVS can be saved. [4] opposite him/it represents Mr. Prof. C. Meier in the practice-adviser Altbau and heat-protection that the calculated energy-saving of the Dämmstoffbauweise practically far abortive, the health leads to extremely uneconomic constructions and is endangered beside it. [5] as well becomes through Mr. K. It represented fishers that the named energy-saving exist through Dämmstoffpakete on old buildings only on the paper. Rather it depends on the storage-ability of massif-construction-manners where energy can be saved meaningfully. [6] with content statements can offer the brick-industry, that the intensified requests suffice with the sägemehlporosierten bricks at the structural heat-protection. [9] the work-community bricks e.V., Bonn, the Fraunhofer institute for construction-physics assigned with a research project, which new trendsetting results brought with brick for the massive construction-manner. It was illustrated that energy-balances are not to be fastened alone at Dämmmaßnahmen and (k) u-Werten of future walls. The enlightenment of the inhabitants with reference to a behavior as well as its acceptance and utilization of the house-technical provision can be disregarded by no means." [10] examinations of the GEWOS-Institutes Hamburg determined, that the yearly-fuel-consumption at monolithic walls is lower at same outside-wall-surfaces and k-Werten. This should still be supplemented through another statement, "the lower they (k) u-Werte the building-cover, the factors become more important, as the utilization-behavior or the efficiency and the rule-technology of the heater-installation." [11] under the Central European climate-conditions amounts the Heizperiode about. 9 months. In this time, it lies one Heat-stream from indoors outside at. [12] the outside-cover should therefore be created so, that as little as possible heat is derived. They much discussed solar-profits can cover only one part of the necessary energy needs because of the restricted sun-hours and can represent no alternative solution so alone.

"Still never, the climate was in our story in repaired apartments as badly as today,... Aimed Dämmung and without mechanical Klimatisierungsanlagen brings back that precisely, what is missed more and more, into our houses and apartments: Healthy residential-climate!" [7] this commentary shows that the establishings of the heat-protection to do something with the reason to the climate-protection, is viewed somewhat one-sidedly. This is determined also in rises of the chair for environment-medicine that high consequence-costs originate exactly through the wrong construction-manner annually [8], that surely among other things in the sad balance that in the meantime each 10. Erstklässer asthmatic is and virtually suffers 1/3 of the population from allergies, reason finds. [5] in the architect-letter 17 [12] is referred, however, that mold was proved at examinations of 700 ungedämmten apartments in the fifties in 30 percent of the cases and the bad insulation was for this responsible. I have predominantly older houses (ungedämmt) in the last years from the year of construction from 1900 to 1960 with about. 500 apartments examined. The occurred mold-problems can be counted on that occasion at a hand. That was the utilization-behavior predominantly, wrong wall-coating and soaked walls. It depends also on it surely which objects are included in the contemplation and as they are assessed.
With Bauwerksteilen this a low heat-storage capacity shows, the heat-passageway takes place without time-postponement, it becomes stationary. With massive structural elements appears, however, a heat-substitution partially delayed over many hours. Meanwhile, however, also the temperatures have, above all outside, altered. If however, one takes this reality into account, so every heat-technical calculation is complicated vastly. It is about a non-stationary heat-passageway here, that is valid in both the summer and in the winter. [13]
In the end another remark. If the temperature in the apartment is reduced only 1 K, the heat-energy-consumption decreases about about. 5%. With radiation-heat a lower area-air-temperature is required with same comfort anyway

Dipl.-Ing.oec., Ing. Peter Rauch
January 2001
Leipzig institute for formation and research e.V.

In an analysis [14] to the behavior of the temperatures in the Eckbereichen of a two-stale-y wall (heat insulation system) and a monolithic wall with u = 0,3 W/m2K and the tried on edge-conditions in accordance with EN ISO becomes a heat transfer-resistance with (Rsi = 0,25 m²K/W) a surface-temperature in the Eckbereich of 17ºC indoors in 10211 as well as. 15,9ºC calculated. The area-temperature amounts to 20ºC and the outside-temperature -5ºC. These theoretical calculations show that a wall-construction with Heat insulation doesn't need to bring advantages inevitably energetically. The calculated results are confirmed in approximately with those from an examination at a new building. Siehe IR-pictures in the contribution can something the thermal imaging messung and where are the borders?

In this context, however, it should be referred also that in the time, where living space had to be created superficially, as after the war in the last century, when building economic points of view in the foreground stood. Realizations from the construction-tradition became so unattended. That these buildings need an energetic update, should not be negated here.

Not only the human being feels probably but also build arm-iron her/its/their arm-iron-construction in the insulation in Styropor plates.

That also is much easier to dig into the hard stonework as the walks. Dress-moths find favorable life-conditions exactly in the heat insulation of sheep-wool. Now, however, also somewhat bigger animals, who recognized the optimal habitat, add on top of this. The collar-parakeets in Heidelberg live in the facade heat insulation.

Alone in the facade heat insulation of a nursing home, approximately 20 nests built themselves the adaptable animals. There they put four eggs per year in the average why the parrot-population grows powerfully. Sources: www.spiegel.de/

Press-information.
Together against CO2 (Kohlendioxid))
Saint-Gobain Isover cooperates with "Galileo"
Ludwigshafen in July 2007. The Manufacturers of heat insulation Saint-Gobain Isover cooperates with "Galileo." The known knowledge-magazine of pro-sieving has a Germany-wide Anti-CO₂-Initiative under the name "CO2NTRA - co Galileo protects" the climate started. The initiative of 'Galileo' like the same-named climate-protection-initiative CO2NTRA, with which the Saint-Gobain Isover G+H INC. promotes Klimaschutz.Projekte already since some years, is called with it. On the Internetseitewww.galileo-co2ntra.de if the knowledge-magazine does as well as on the Isover - initiative CO2NTRA also as on the Manufacturers of heat insulation as a partner aware. Moreover backed Isover with its expert-knowledge around the topic heats insulation the editorial work of "Galileo" ....

Nothing against the quite neat heats insulation of Isover. Only at this example, the avoidable "objective" coverage of the media becomes clear.

With this Tool, you can the effective one - and transmission-heat-losses of an outside-wall calculate.

Literature
[1] 22. Juni 2000, Architekt Bauingenieur Paul Bossert, CH-8953 Dietikon
[2] bau-zeitung 54(2000)6 S. 54 ff
[3] bau-zeitung 54(2000)1/2 S. 55 ff, 5 S.39 ff und 6 S. 65 ff
[4] bau-zeitung 53(1999)10 S.10 ff. Wärmedämmverbundsysteme eine Öko-Bilanz, M. Betz, J. Kreißig, H. Schöch, Institut für Kunststoffprüfung und Kunststoffkunde Uni. Stuttgart
[5] Praxis Ratgeber Nr. 7 - Januar 1999 - Herausgeber: Deutsche Burgenvereinigung e.V. (DBV) Marksburg, D-56338 Braubach, Prof. Dr.-Ing. habil. C. Mayer
[6] bauplan-bauorga 3/2000 S. 114
[7] bau zeitung 53(1999)11 Rolf Köneke, Hamburg
[8] bauplan-bauorg 3/2000 S. 114, Prof. Dr. M. Schata, Lehrstuhl für Umweltmedizin
[9] Bau-zeitung 53(1999)10 S.50 ff
[10] bauplan-bauorg 6/99 S.231 Forschungsvorhaben Bochum-Werne
[11] bau-zeitung 50(1996)10 S. 39
[12] Architektenbrief 17, W. Eicke-Hennig, Institut Wohnen und Umwelt, Darmstadt 1994
[13] Eichler/Arndt, Bautechnischer Wärme- und Feuchtigkeitsschutz Bauverlag 1989
[14] Jaroslav Rímal, Marcus Hermes; Die energiesparende Gebäudehülle, GFF 12/2006 S. 32