Ansitz Kofler

39100

Bozen, Italien

Architekt

Manuel Benedikter
Zwölfmalgreiner Straße 11, 39100 Bozen
info@benedikter.biz

Ansprechpartner

Manuel Benedikter
Manuel Benedikter Architekt Architetto
info@benedikter.biz

Other Information

Related publications
Master Thesis Hannes Mahlknecht, several conference proceedings
© Manuel Benedikter Architekten
Retrieval of lost Orangerie character and energy retrofit - these were the targets which the owner aimed for. He showed that factor 10 reduction in energy demand is possible also in a listed building.
Energieeffizienz
30 kWh/m2.y

Klimazone dfa

Höhe über dem Meer 260 m ü.d.M.

Heizgradtage 2570

Kühlgradtage 0

Unterschutzstellung denkmalgeschützt

Ensembleschutz:
Ja

Stufe der Unterschutzstellung:
Listed under BLR-LAB 4980 from 25.07.1977

Baualter 1700-1800

Letzte Sanierung:
2008

Vorhergehende Sanierungen:
1925

Gebäudenutzung Residential (urban)

zusätzliche Nutzung:
NA

Gebäudebelegung:
Permanently occupied

Anzahl der Bewohner/Nutzer:
6

Gebäudefläche Nettogeschossfläche [m²]: 141,0

Gebäudetyp:
Refrubished was the wing of a detached house

Anzahl der Stockwerke:
1

Keller ja/nein:
Nein

Anzahl der beheizten Stockwerke:
1

Bruttogeschossfläche [m²]:
176,0

Thermische Gebäudehülle [m²]:
1206,0

Volumen [m³]:
742,0

NGF Berechnungsmethode:
Useful area (it)

Bauart
Stone masonry wall

Außen:
Rendered

Innen:
Plastered (on hard)

Dach:
Terrasse above dwelling

+ MEHR - WENIGER
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
West facade with garden © Manuel Benedikter Architekten
West facade with garden © Manuel Benedikter Architekten
Window detai © Manuel Benedikter Architekten
Window detai © Manuel Benedikter Architekten
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
Main entrance © Manuel Benedikter Architekten
Main entrance © Manuel Benedikter Architekten
© Manuel Benedikter Architekten
MEHR SEHEN +
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
Orangery from the 18th century © Manuel Benedikter Architekten
Orangery from the 18th century © Manuel Benedikter Architekten
© Manuel Benedikter Architekten
© Manuel Benedikter Architekten
M
M

RENOVIERUNGS-PROZESS

Architektur

BESCHREIBUNG

The main building of "Ansitz Kofler" was built in 1749 and had in 1769 Wolfgang Amadeus Mozart as a guest. The Orangerie was added a bit later: as 30m long and 5 m wide structure with spacious and bright rooms, used for breeding tropical fruits - for which the climate in Bozen, even if south of the Alps, would otherwise have been too harsh. In 1925 the Orangery was converted to a dwelling: the windows were scaled down, and internal walls were added, forming a suite of rooms aligned with each other (so called enfilade). As typical for buildings of this age in Bozen, the bearing structure is a stone masonry, with stones of different size, taken from the rivers in the area.

DENKMALWERT

ERHALTENSWERTE ELEMENTE
The protection decret mentions the neoclassical facade and a Madonna relief in marble above the flat arched main entrance. The owner himself added as elements worthy of presrevation the old jasmine, the wine grape in the north corner going up to the terrasse and the tile stove in the living room. General principle of conservation would have been to not allow exterior insulation on a listed building. The evaluation of the specific case, resulted in a mixed solution - with exterior insulation where it did aesthetically not interfere with the remaing building and where the intervention was anyway considerable. Interior insulation and preservation of the historic render on the east facade.
Denkmalwert und wie er bestimmt wurde
The renovation conecpt was elaborated in close collaboration with the preservation office of South Tyrol: They supported the whish of the owner, to go back towards the architectural appearance of the Orangery. This approach would also connect the wing closer to the internal park, which is specifically part of the protection.

Erhaltungszustand

Erhaltungszustand der Gebäudehülle
Being narrow and just one floor high, the dwelling has high share of "external envelope" compared to the used volume (A/V ratio ~1.4!). Together with the high energy losses through the stone walls, this resulted in both a high energy demand and poor comfort due to low surface temperatures. The building was overall well maintaned and in good conditions: inspection of the wooden beams of the ceiling structure confirmed that they were well preserved. Material probes showed that humidity in the walls was not elevated
Haustechnische Anlagen vor Sanierung
The needed heat was provided by an old gas boiler and radiators in all rooms, supported in the living room by a tile stove.

Ziel der Sanierung

Renovation
Hans Glauber, a South Tyrolean visionary in matters of solar energy and climate protection, wanted to set an example with the refurbishment of his own listed building: Equally important for him were conservation aspects - in terms of recovering the Orangery character, preserving characteristic elements, and finding solutions in a dialogue with preservation experts - and a consistent reduction of the energy demand, resulting in climate protection and better living comfort at the same time. He wanted to reach Klimahaus A level: this means a heating demand of 30 kWh/m²a, which was a real challenge for the given geometry with an awful lot of exterior surface and the west-orientation limiting the solar contribution. The retrofit project finally included a bundle of measures, which together allowed to reach the target. The 60cm thick stone walls were insulated - from inside along the east facade and from outside at the west facade (where a portico resulted in clear aesthetic border to the remaining building) with large overlapping areas to avoid thermal bridges. Large passive house windows (with wooden frame) allow to reduce losses and optimise solar gains. The insulation of the floor was combined with providing the necessary space for technical installation and ducts and the ceiling towards the terrace was insulated from above, allowing to keep the existing wood boarding. A ventilation system with heat recovery and ground-air heat exchanger (to pre-heat the air in winter, and cool it in summer) further improved comfort and reduced the energy need, which finally is covered by a pellet boiler in a climate neutral way.
Beteiligte Akteure
Private
Hans Glauber
Building owner
Forschung und Entwicklung
Eurac Research
Drususallee 1, 39100 Bozen
renewable.energy@eurac.edu
Architekt
Manuel Benedikter
Zwölfmalgreiner Straße 11, 39100 Bozen
info@benedikter.biz
Haustechniker
Felderer Klammsteiner energytech
Negrellistraße 13, 39100 Bozen
info@energytech.it
Eingesetzte Software/Berechnungstools
Folgte die Sanierung einer spezifischen Methode? targetting KlimaHaus A
Energiebilanz with KlimaHaus
Hygrothermische Bewertung with Wufi for the wall profile and Therm for 2D thermal bridge verification

SANIERUNGS-LÖSUNGEN

Außenwände

Walls with exterior insulation

Walls with interior insulation

Thermal bridges

Monitored temperature and humidity profile

Walls with exterior insulation

Since the western facade -on the one hand side- is visually disticted from the rest of the building, due to terasse and balcony and -on the other hand side- with rebuilding the historical window openings, the intervention on this facade was anyway considerable, in agreement with the heritage authority exterior insulation could be applied.

As a first step, the earth around the building was taken off until the foundation in a deepness of 60cm. Then non-hygroscopic insulation boards (XPS, 2x12cm) were placed parametrical around the building and glued to the exterior plaster and plastered. After this, 20cm of mineral wool insulation (FLUMROC Compact) were glued on the upper parts of the ancient stone masonry. These panels have a special compacted surface and coating on one side for better adhesion of the exterior plaster. Finally a waterproofing membrane as protection for the foundation was applied, and the trench filled with gravel.

U-Wert (vor Sanierung) [W/m2K]: 2,1 W/m²K U-Wert (nach Sanierung) [W/m2K]: 0,16 W/m²K
Mehr Details
Aufbau Bestandswand
Plaster - Original exterior plaster:
10 mm
Stone - Natural stone masonry:
600 mm
Plaster - Interior plaster:
10 mm
Aufbau sanierte Wand
Plaster - New exterior plaster:
10mm
Insulation - FLUMROC mineral wool:
200 mm
Plaster - Original exterior plaster:
10 mm
Stone - Natural stone masonry:
600 mm
Plaster - Interior plaster:
10 mm
Walls with interior insulation

All walls except the western facade were insulated from inside: Also here XPS was used in the lower part and placed all around the perimeter in direct contact with the floor insulation. From about half a meter upwards 14cm thick mineral wool panels (FLUMROC Compact) form the main insulation layer. The following OSB panel serves as support for the vapour barrier(sd>100), special attention was paid to seal all joints with tape. At the junction to the ceiling the vapour barrier of the wall and the vapour retarder of the ceiling (sd=2.0) overlap and are taped. All wet piping, electrical wiring and ductwork is placed in the 4cm thick installation layer - resulting in a total of 14+4=18cm of insulation and no installation breaking through the vapour barrier. As finish towards the inside follow finally 2.5 cm plasterboard.

In the bedroom, instead of mineral wool insulation, wood fibre boards were used.

U-Wert (vor Sanierung) [W/m2K]: 2,1 W/m²K U-Wert (nach Sanierung) [W/m2K]: 0,17 W/m²K
Mehr Details
Aufbau Bestandswand
Plaster - Exterior plaster:
20 mm
Stone - Natural stone masonry:
600 mm
Plaster - Interior plaster:
30 mm
Aufbau sanierte Wand
Plaster - Exterior plaster:
20mm
Stone - Natural stone masonry:
600 mm
Plaster - Original interior plaster:
30 mm
Insulation - FLUMROC :
140 mm
Wood - OSB board and vapour barrier:
20 mm
Insulation - FLUMROC (installation layer):
40 mm
Other - Plasterboard:
25 mm
Thermal bridges

To prevent thermal bridges where partition walls abut outside walls, wherever possible, the internal wall was cut and insulation placed vertically against the wall. Where new partition walls were built up, interspaces to the external wall were left in order to place insulation, OSB-boarding and vapour barrier behind.

However, in some situations the wall was a bearing one and thus could not be cut. Therefore insulation on the border had to be applied. In one case in the corner an old chimney was found – and by insulating that internally the supplementary insulation along the partition wall could be avoided. Not in all points the elimination of thermal bridges was possible: In the bedroom an arch as separating and supporting element could neither be cut nor insulated alongside. Internal insulation and vapour barrier were brought there until the borders of the arch and finished with plaster. A sensor for temperature and humidity is monitoring this potentially critical point.

U-Wert (nach Sanierung) [W/m2K]: 0,0 W/m²K
Mehr Details
Aufbau Bestandswand
Aufbau sanierte Wand
Monitored temperature and humidity profile

Since at Ansitz Kofler owner and architect aimed at an insulation thickness which was considerably higher than the ~8cm capillary active insulation - at that time in practice usually assumed as safe - they opted for a solution with vapour barrier (sd>100). Accordingly high effort was put in avoiding any potential failure: any penetration of the vapour barrier was avoided (4cm installation layer), sealing tapes were applied with care, a blower door test after preliminary installation was done to attest airtightness in a phase were they still could have intervened etc. The monitored data indicate safe conditions.

The first image on the T profile shows that indoor surface is slightly colder than indoor air, temperature before and after vapour barrier practically identical, major temperature difference along main insulation (Δ A1.4-A1.5), and nearly no temperature difference along the ancient stone wall (Δ A1.5-A1.6) – interesting to see that main effect of the stone wall is to level out daily variations. A look at the absolute humidity (g/m³) demonstrates the effective operation of the vapour barrier: while indoors it varies between 7-8 g/m³ – measured values of the air and inside the construction before the barrier being very similar – outdoors it is generally about 2 g/m³ lower.

U-Wert (nach Sanierung) [W/m2K]: 0,0 W/m²K
Mehr Details
Aufbau Bestandswand
Aufbau sanierte Wand


Fenster

Window (with exterior insulation)

Window (with interior insulation)

Window (with exterior insulation)

In the west facade (which is the one with exterior insulation) the ancient openings were reconstructed. In order to allow for the most efficient position of the new window in a line with the insulation layer, the subframe (and on it later on the main frame) had to be placed just "outside" the original stone wall: this was achieved by posing it on a horizontal supporting joist and fixing it punctually with angle steel to the stone masonry. In order to avoid thermal, the roller-shutter casings are installed on the wall in the insulation layer. The subframe was completely covered by the mineral wool panels. After the plaster works were finished, the windows themselves were posed (this approach is quite typical for Italy, where windows are considered kind of "furniture" and come to the building site as late as possible). For guaranteeing airtight connection between subframe and main frame of the window, jointing tape was applied around the frame.

The preservation office of South Tyrol supported the wish of the owner, to go back towards the architectural appearance of the Orangery, since this approach would also connect the wing closer to the internal park, which is specifically part of the protection. Enlarging the again the window openings - which were reduced in 1925 refurbishment - was part of this concept. Also the regular detailing is inspired by to the Orangerie.

Bestandsfenster U-Wert Glas [W/m2K]: 3,2 Neues Fenster U-Wert Glas [W/m2K]: 0,6 Bestandsfenster U-Wert Rahmen [W/m2K]: 2,0 Neues Fenster U-Wert Rahmen [W/m2K]: 1,45
Mehr Details
Fenstertyp Bestand Box-type window
Verglasungsart Bestand Single
Verschattung Bestand Outer shutter
Ungefähres Einbaujahr 1925
Neuer Fenstertyp Casement window
Verglasungsart des neuen Fensters Triple
Verschattung des neuen Fensters Moveable shading
Neuer Energiedurchlassgrad g [-] 0,53
Window (with interior insulation)

Also in combination with interior insulation, the windows were placed in the insulation layer. The subframes were thus again placed just inside the stone masonry, voids were filled with PUR-foam and a jointing tape applied all around.

Again, the window opening were partly enlarged in agreement with the conservation authority to go back to the Orangerie character, detailing is inspired by the original glazing.

Bestandsfenster U-Wert Glas [W/m2K]: 3,2 Neues Fenster U-Wert Glas [W/m2K]: 0,6 Bestandsfenster U-Wert Rahmen [W/m2K]: 2,0 Neues Fenster U-Wert Rahmen [W/m2K]: 1,45
Mehr Details
Fenstertyp Bestand Box-type window
Verglasungsart Bestand Single
Verschattung Bestand Outer shutter
Ungefähres Einbaujahr 1925
Neuer Fenstertyp Casement window
Verglasungsart des neuen Fensters Triple
Verschattung des neuen Fensters Roller blinds
Neuer Energiedurchlassgrad g [-] 0,53

Weitere Maßnahmen

DACH

ERDGESCHOSS

MASSNAHMEN UM DIE LUFTDICHTIGKEIT ZU VERBESSERN

DACH

The roof was refurbished from outside, in order to preserve the existing beam structure, inner wood boarding layer and interior plaster. The old water proofing layer was removed, FLUMROC mineral wool was placed in two layers (12 14cm) between the 26 cm high rafters on the existing wood boarding. On top of joists and insulation an OSB board and a diffusion open water tight sheet (Riwega USB CLASSIC) was posed. On this construction, transversal battens guarantee a 80-125mm high air space to ventilate off any moisture transferred by diffusion from the rooms, before the green roof with the a water draining layer (1.5% inclination) follows. When the roof was finished outside, from the inside a vapour retarder and 4cm installation layer filled with mineral wool where added. As finish clay boards were applied and painted.

Besides the attention which has always to be paid to the sealing well the green roof, in the specific case, preserving the pergola and railing around the terrace increased the needed level of attention further: the columns of the pergola were finally wleded with steel plates and posed on a protective rubber strip.

U-Wert (vor Sanierung) [W/m2K] 1.27 U-Wert (nach Sanierung) [W/m2K] 0.17
Mehr Details
Aufbau Bestandsdach
Other - Wood:
20 mm
Other - Wood/Air:
260 mm
Other - OSB-panel:
14 mm
Other - Plaster:
25 mm
Aufbau saniertes Dach
Other - Plaster:
220 mm
Other - Ventilation layer (80 - 125 mm):
80 mm
Other - Diffusion-open, water-tight sealing on roof boarding:
25 mm
Other - Wood / FLUMROC mineral wool:
260 mm
Other - vapour retarder posed on orginal plaster and wooden boards:
40 mm
Other - Installation layer, filled with FLUMROC mineral wool:
40 mm
Other - Clay board:
25 mm
ERDGESCHOSS

The floor was removed until the foundation and rebuild with a thermal insulation avoiding ascending moisture infiltration from the ground and from the walls. The multilayer floor was compounded on a gravel aggregate layer on whom a lean concrete sub-base (50 mm) was poured. This layer is used as blinding layer on which bituminous sheeting was applied. The sheeting was brought on the border of the walls and welded, in order to avoid lateral infiltration from the stone masonry. Next step was lay-out rigid insulation boards XPS (2 x 100 mm), which were covered with another protective concrete layer (50 mm). On this flat layer all conduits and electric cables were installed. Once all crafts had applied the conduits, a 16 cm thick layer of lean concrete was poured. A lightweight-screed in this case couldn’t be used as too much conducts crossed the layer. Conducts were lay and connected to the cable layer in the walls. The vapor barrier was turned around the border of the lean concrete.

The ancient floor (from 1925) was tiled. Under this layer a screed of some cm hight was found, which had been poured on the earth ground.

U-Wert (vor Sanierung) [W/m2K] 2.42 U-Wert (nach Sanierung) [W/m2K] 0.17
Mehr Details
Aufbau Boden/Kellerdecke im Bestand
Concrete slab - Screed:
70 mm
Other - Tiles:
15 mm
Aufbau Boden/Kellerdecke nach Sanierung
Concrete slab - Lean concrete on gravel aggregate bed (50+50mm):
100 mm
Damp Proof Membrane - Bituminous sheeting:
5 mm
Insulation - XPS (2 x 100mm):
196 mm
Concrete slab - Lean concrete with hydraulic and ventilation conducts, on concrete protective layer (160+50mm):
210 mm
Insulation - Sound insulation :
20 mm
Concrete slab - Heating screed:
49 mm
Other - Oak wood flooring:
20 mm
MASSNAHMEN UM DIE LUFTDICHTIGKEIT ZU VERBESSERN

To reach a continuous air-tight layer at Ansitz Kofler, the vapor barrier on the walls was (i) well connected to the vapor retarder on the roof, (ii) turned around the border of the lean concrete in the floor, and (iii) well connected with tape to the window sub-frame and other openings. All electric and hydraulic ducts and cables were installed on the inner side of the vapor barrier in order to prevent punctures. To check the tightness of the vapor barrier and to discover eventually leaks, a preliminary blower door-test was done before the application of wooden battens and plaster boarding. The final Blower Door test following European Standard UNI EN 13829, procedure B, resulted in a very good value of n50= 0,66/h (for comparison: 0.6 needed for PH certification, 1.0 for EnerPHIT)

Airtightness (pre-intervention) [ach@50Pa] 9999 Airtightness (post-intervention) [ach@50Pa] 0.66

HVAC

HEIZUNG

LÜFTUNG

BRAUCHWARMWASSER

HEIZUNG

The ancient gas boiler was replaced by a pellet boiler, which supplies the all 5 apartments in the building complex with warm water fro heating and DHW. While the other four apartments use classical high temperature radiant systems, the retrofitted Orangery here presented has a floor heating system.

When a biomass boiler is projected, pellet storage must be dsignated for. Since there is no space available in the house or basement, the pellets are stored in a tunk buried in the garden - and brought to the reservoir in the heating room with a suction turbine. For the Tiled stove, which should be preserved as character defining element of the dwelling, a new insulated chimney pipe had to be built up to provide fresh air supply independent from ambient air. The stove was demounted and reconstructed with a hermetical lockable fresh air supply to ensure air tightness.

Mehr Details
Heizungssystem nach Sanierung zusätzliches Heizungssystem nach Sanierung
Art der Heizung Boiler Stove
Brennstoff Biomass Biomass
Wärmeverteilung Radiating floor direct
Nennleistung na (for the whole building) kW na kW
LÜFTUNG

A central system for controlled ventilation with heat recovery ensures not only that the necessary exchange of air takes place automatically but also that the incoming air from outdoors is warmed by cooling the exhaust air. The installed ventilation system provides balanced air flow and achieves a maximum volume flow rate of 300m³/h – to reach the required air change volume of 0.4 m³/h and provide living areas up to 220 m² with fresh air, level 2 with 220 m³/h will be sufficient. The “Air-to-Air Heat Exchanger” recovers up to 85 percent of the heat from outgoing air. An automatic summer bypass unit has been integrated: guaranteeing that the outside air almost completely bypasses the heat exchanger prevents the supply air from being additionally warmed during warm summer months.

The ventilation unit is placed in a crawlspace above the kitchen, benefitting from the ample room height of 4m. The distribution ducts are integrated in the anyway refurbished floor, together with the hydraulic system in a concrete layer between thermal and sound insulation. Advantage from conservation point of view is the fact, that with ventilation system high indoor humidities which might induce condensation within the construction at any week point are avoided.

Mehr Details
Aufbau Bestandsdach Neues Lüftungssystem
Lüftungstyp Centralized
Type flow regime Standard
Wärmerückgewinnung Ja
Feuchterückgewinnung Nein
Nennleistung 38W @ 150m³/h and 100Pa kW
Elektrische Leistung 0,0 kW
Regelung continous
BRAUCHWARMWASSER

The domestic hot water is also provided by the pellet heating system. A stratified storage of 800 liter size serves as buffer. A circulation pump guarantees immediate hot water in the dwellings, results however also some heat losses.

At the time of retrofit no solar panels compatible with the listed building's demand were available. Nevertheless, the storage tank has a a two coil type heat exchanger - to allow for the integration of a solar circuit in future.

Mehr Details
Brauchwarmwasserbereitung nach Sanierung
Typ with heating system
Brauchwasserspeicher Ja
Wärmerückgewinnung aus Brauchwasser Nein

ERNEUERBARE ENERGIE

Solarthermie

Biomasse

Geothermie

Solarthermie

Passive Solar: Thanks to going back to the Orangery character on the west facade, nearly one third of the transmission losses are balanced out by passive solar gains.

Active Solar: At this stage due to conservation restrictions no solar panels were installed. The storage for DHW was however chosen with two coil type heat exchanger - to allow for the integration of a solar circuit in future, when possibly aesthetics of solar panels have been furthere developed to fit in conservation areas.

Mehr Details
SolarThermal System
Type
Biomasse

With a pellet boiler providing the heat for space heating and DHW, the remaining heating demand is provided by a renewable and CO2 neutral source.

There is no visual impact on the ensemble, since the pellets tank could be buried, and there was also no material impact, as the pellets boiler itself was installed in the original heating room.

Mehr Details
Biomass System
Type
Storage size
Origin of biomass
Overall yearly production kWh
Geothermie

The air for the ventilation system is pre-heated in winter and pre-cooled in summer with a ground-to-air heat exchanger: The polypropylen pipes are laid in 1.5 to 2m depth in the earth around the buildings, with a gradient of 2% to guarantee condensation discharge and a antimicrobial layer consisting of silver particles.

The air inlet has a dust and pollen filter, a further benefit to allergy sufferers.

Mehr Details
Geothermal System

Energieeffizienz

Energieeffizienz
Energieausweis KimaHaus / CasaClima A+
Freiwillige Zertifikate Reaching KlimaHaus A level (<30 kWh/m²a) was volontary and going far beyond usual practice. In 2008 in Bozen reaching KlimaHaus C level (<70 kWh/m²a) would have been compulsory for new constructions. Also the "+" is volontary. The “+ “of the CasaClima A+ certification includes other criteria aside from energy consumption for heating. One of them is the prohibition to use fossil fuels for heating. Other criteria concern employed materials, which have to be sustainable for environment and health. Neither utilization of synthetic insulations (admitted for maximum of 20m² for exterior insulations on facades, as well as for terraces, flat roofs, perimetrical insulation and basement), floorings in PVC for floors, windows and doors, wood treated with chemical varnish, colors containing dissolvers, nor the utilization of tropical wood were allowed for this certification.
Energievrabrauch
Documents:
EnBal_comp.JPG
© Eurac Research

Energieverbrauch nach Sanierung 30 kWh/m2.y

Primärenergie
Berechnungsmethode NA
Energieverbrauch incl Brauchwarmwasser Nein
Gemessene Parameter
Raumklima
Type_of_monitoring: Continuous
Description: In both living room and bedroom temperature (T) and relative humidity (RH) are monitored.

Außenklima
Type_of_monitoring: Continuous
Description: On the terrace temperature (T), relative humidity (RH), wind speed and solar radiation are monitored. Since solar radiation is measured precisely at Bolzano airport, but mountains might shadow the building in the old town differently, a simple solar radiation sensor was chosen, to mainly complement available data.

Bauteile
Type_of_monitoring: Continuous
Description: Overall 4 wall profiles are monitored, each including (i) exterior surface T, (ii) T and RH between stone wall and insulation, (iii) T& RH before the vapour barrier, (iv) T&RH after the vapour barrier, (v) heat flux at the interior surface and (vi) interior surface T. Furthermore the T at the connection from partition to outer wall is monitored - to quantify the thermal bridge effect. Finally, T and RH are measured in two wooden beams.

Raumklima

Temperatur

Monitoring results showed comfortable temperatures both in winter and summer. Monitored winter conditions ranged between 19°C and 21°C, with the lower temperatures corresponding to periods where the user was absent. In summer, the operative temperatures ranged between 24°C and 27°C with outdoor daily averages going up to 29°C.

Daylight

With increasing the window size, the daylight availability was considerably increased. The inclinable shutters allow for personalised control of light and glare. The result was however not quantified with monitored data.

Post Occupancy Evaluation

POE-Report Available:
AnsitzKofler_EM.pdf
presented at "Energy Managament in Cultural Heritage", March 2011

Kosten

Finanzielle Aspekte

For the selection of the interior insulation an economic comparison between VIP (vacuum panel) insulation and mineral wool was made. For Bolzano real estate prices it would have been worthwhile to invest in VIP and gain respective living area. Since the building owner would also have lived himself in the appartment - and considered it to be "big enough" also with 20 cm less space - he opted nevertheless for the mineral wool option.

Betriebskosten
Lifecycle cost
Nein

Umwelt

Treibhausgasemissionen
Methodology_used: was not applied
emissions_at_use_stage_before_intervention: NA NA
emissions_at_use_stage_after_intervention: NA NA
emissions_before_use: NA
Life Cycle Analysis
Methodology_used: was not applied
Water Management

Next to the pellets tank there is also a water cistern for the rainwater, which is drained from the roof, stocked in the tank and used for domestic use.

Transport and Mobility

Ansitz Kofler is situated in the old town of Bolzano, with direct access to the extensive bycicle network of the town. Weather protected bike parking is provided, both for inhabitants and guest. Hans Glauber, the owner, is also one of the initiators of the car sharing system in Bozen.

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