Trikåfabriken

Monbijougatan 17C, Kvarteret Bilden

211 53

Malmö, Schweden


Besitzer

Stena Fastigheter AB
Skeppsbron 13B 211 20 Malmö
moa.persson@stena.com

Ansprechpartner

Sharon Pulvino
Uppsala Universitet

Other Information

Visits
To visit the project, please contact Moa Persson, moa.persson@stena.com

Copyrights Felix Gerlach
Trikåfabriken in Malmö is one of Sweden's first refurbishment projects to be climate assessed. Until the mid-1980s, the building produced women's underwear, among other things, and since then various companies have had offices in the premises. The ambition during the renovation has been to preserve the character of the building, both inside and out, and to adapt floor plans and technical installations accordingly.
Energieeffizienz
98 kWh/m2.y

Klimazone Cfb

Höhe über dem Meer 12 m ü.d.M.

Heizgradtage 2214

Kühlgradtage 27

Unterschutzstellung denkmalgeschützt

Ensembleschutz:
Ja

Stufe der Unterschutzstellung:
The building is located within the national interest for cultural heritage, Malmö (M114).

Baualter 1900-1944

Letzte Sanierung:
2020

Vorhergehende Sanierungen:
1970

Gebäudenutzung Offices

Gebäudebelegung:
Permanently occupied

Anzahl der Bewohner/Nutzer:
522

Gebäudefläche Nettogeschossfläche [m²]: 4825,0

Gebäudetyp:
Old knitwear factory

Anzahl der Stockwerke:
3

Keller ja/nein:
Ja

Anzahl der beheizten Stockwerke:
0

Bruttogeschossfläche [m²]:
0,0

Thermische Gebäudehülle [m²]:
0,0

NGF Berechnungsmethode:
Sweden

Bauart
Steel frame

Außen:
Exposed brickwork

Innen:
Plastered (on substructure)

Dach:
Pitched roof

+ MEHR - WENIGER
Copyrights Felix Gerlach
Copyrights Felix Gerlach
Copyrights Felix Gerlach
Copyrights Felix Gerlach
Copyrights Felix Gerlach
Copyrights Felix Gerlach
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB
Pictures before the renovation. Source: Erika Martin Arkitekter AB./Bilder före renoveringen. Källa: Erika Martin Arkitekter AB

RENOVIERUNGS-PROZESS

Architektur

BESCHREIBUNG

The ambition during the renovation has been to preserve the character of the house, both inside and out, and to adapt floor plans, and technical installations etc. accordingly. Traces of heavy knitting machines are still visible in the wooden floor. Even the pillars are reminiscent of the time when the building was used as a factory. Luminaires, windows, wooden floors and plaster walls have been renovated and restored. The reuse of space has been favoured, for example, masonry walls and sections have been reclaimed and used to rebuild new interior walls. Waste materials have been turned into outdoor furniture and bicycle racks, and details such as rosette valves have become character-enhancing features of the whole. The materials are few and recurring, where the existing board floor is an important element to give feeling and character to the premises. Other materials such as steel partitions, birch plywood, wooden ceilings, stone, carpets and textiles are chosen to last a long time and age beautifully. New lighting has been developed in collaboration with Ateljé Lyktan; an energy-saving version of the industrial lamps that once illuminated the factory.
Städtebaulicher Kontext
The building has a common courtyard designed to allow everyone working in the different buildings to meet easily and spontaneously. There are areas suitable for various activities or just hanging out, including a shared roof terrace, table tennis tables and car-free areas for movement, play and creative workshops.

Erhaltungszustand

Erhaltungszustand der Gebäudehülle
Knitwear production continued until 1984 when the property was bought by Stena Fastigheter. The buildings have since been used as offices, studios, a restaurant, a glassmaker's workshop, etc. Since the early days of the factory, the facility has undergone a large number of changes, both major and minor renovations and extensions as the business has grown, modernised and changed. Even after its time as a knitwear factory, the plant has continued to be modified and rebuilt, especially internally, according to changing needs, requirements and activities. Long use and a large number of ongoing changes, sometimes short-term and relatively temporary, have led to heavy deterioration. It is positive that the factory buildings will now be renovated/restored with a holistic approach. The buildings will also be upgraded in terms of accessibility, fire safety, technical installations, ventilation, etc.

DENKMALWERT

ERHALTENSWERTE ELEMENTE
The proposed measures include the restoration of remaining original mullioned windows. Existing original windows differ to some extent, some have simple sashes, some have loose original inner sashes and some have relatively new inner sashes with poor fit that do not fulfil any major function. The measures are adapted to the conditions of each window.
Denkmalwert und wie er bestimmt wurde
The original knitwear factory and its 1920s additions are executed with great craftsmanship. The masonry is of high quality, both in terms of materials and workmanship. Visible, load-bearing steel frames were common in industrial buildings. The factory's original mansard roof truss structures, together with the masonry and steel frame, have architectural and technical historical value. In the interior, the original use of the buildings as a factory with large, open workrooms is evident through strong, longitudinal iron and concrete beams supported by cast iron columns, which has architectural historical value. The interior also has three similar, contemporary stairwells from the 1910s, 1920s and 1930s.

Ziel der Sanierung

Renovation
The aim of the project is to transform the interior of the old knitwear factory into office space by preserving the character of the building both externally and internally. 1970s windows in poor condition have been replaced by newly manufactured ones, identical to the original windows but with a discreet intermediate sunscreen. Existing windows in good condition have been restored and insulated with new internal frames (insulating glass). A new district heat exchanger and new ventilation system have been installed, as well as solar panels on the roof. The building has been updated in terms of modern regulatory requirements for accessibility and fire, which has been solved with as few new additions as possible. At this stage, for economic reasons, no insulation has been added to the slab or exterior walls of the basement. In the near future, the owners will carry out drainage and at the same time the basement walls will be further insulated. The external walls have not been additionally insulated as they were sufficiently insulated according to the energy calculations. The roof was insulated at an earlier stage. The project took place in stages and the values presented here relate to Houses A, B and C.
Gab es eine Änderung der Nutzung?
The knitwear factory was converted from a factory to office space.
Gewonnen Erkenntnisse / besondere Erfahrungen
A lot of time needs to be spent on the reuse process and you need to be active and have a high level of leadership in the project, the contractors do not solve this on their own but need a lot of support and guidance. However, we believe that clients in all projects need to have great leadership, so for us it was a minor difference from our usual way of working.
Eingesetzte Software/Berechnungstools
Folgte die Sanierung einer spezifischen Methode? Nein
Energiebilanz IDA Indoor Climate and Energy 4.8

SANIERUNGS-LÖSUNGEN



Fenster

Existing windows renovated and upgraded

New windows with built-in sun protection

Existing windows renovated and upgraded

Most of the existing windows were 70's wooden windows with 2 glasses. The windows that weren't damaged have been renovated, insulated with new internal frames (insulating glass) and restored to their original appearance.

The outcome is very positive. Existing original windows differ to some extent, some have simple sashes, some have loose original inner sashes and some have relatively new inner sashes with poor fit that do not fulfil any major function. The interventions should be adapted to the conditions of each window.

Bestandsfenster U-Wert Glas [W/m2K]: 0,0 Neues Fenster U-Wert Glas [W/m2K]: 0,6 Bestandsfenster U-Wert Rahmen [W/m2K]: 2,5 Neues Fenster U-Wert Rahmen [W/m2K]: 2,0
Mehr Details
Fenstertyp Bestand Casement window
Verglasungsart Bestand Double
Verschattung Bestand NA
Ungefähres Einbaujahr 1970
Neuer Fenstertyp Casement window
Verglasungsart des neuen Fensters Double
Verschattung des neuen Fensters NA
Neuer Energiedurchlassgrad g [-] 0,0
New windows with built-in sun protection

New windows with insulating glass have been recreated in the old style. Windows in sunny locations have been fitted with an intermediate sunscreen that is controlled by sunlight and temperature. The building has been divided into different sections where each section is controlled by a sensor placed on the roof. It reacts to the sun and follows a sun curve. When the sun is shining, the curtains close automatically, and they open automatically when the sun is no longer there. However, with a certain delay (sun curve) to minimise the curtains going up and down as soon as the sun goes into clouds. The curtains can be temporarily controlled at each window, but after a couple of hours they automatically go into the position indicated by the sensor, in order to minimise the need for cooling on sunny days.

The intervention is very positive for the overall image of the building. New windows must be designed as copies of original windows in terms of material, shape (arched or rectangular top), timber dimensions, dividers, hanging, drip mouldings and other details. External sashes shall be fitted with single glazing and glass-breaking glazing bars.

Bestandsfenster U-Wert Glas [W/m2K]: 0,0 Neues Fenster U-Wert Glas [W/m2K]: 0,4 Bestandsfenster U-Wert Rahmen [W/m2K]: 2,5 Neues Fenster U-Wert Rahmen [W/m2K]: 1,1
Mehr Details
Fenstertyp Bestand Casement window
Verglasungsart Bestand Double
Verschattung Bestand Roller blinds
Ungefähres Einbaujahr 1970
Neuer Fenstertyp Casement window
Verglasungsart des neuen Fensters Double
Verschattung des neuen Fensters Inner shutter
Neuer Energiedurchlassgrad g [-] 0,0

HVAC

HEIZUNG

LÜFTUNG

KLIMATISIERUNG

BRAUCHWARMWASSER

HEIZUNG

During the renovation, a completely new district heat exchanger was installed where smart control (e.g. AI) is possible to optimise the heating system and reduce heating costs. All heating pipes, radiators and tap water pipes in the project are new.

The measures were carried out with greater respect for the original structure and with minimal intervention. Before we started the renovation, we already had district heating in the property. However, we have a new technincal control centre and new heating pipes in the building. Nothing more than incoming district heating has been preserved.

Mehr Details
Heizungssystem nach Sanierung
Art der Heizung Fjärrvärme
Brennstoff Biomass
Wärmeverteilung Radiators
Nennleistung 320 kW
LÜFTUNG

Ventilation and air-conditioning is provided by a VAV system with cooled supply air (Lindab). The four air handling units - with a capacity of between 1 m3/s and 4.5 m3/s - are located in an equal number of fan rooms. The airflow is regulated by presence and increases automatically if the temperature or carbon dioxide rises, Tenants cannot force the flow themselves. However, they can regulate the room temperature set point within a range determined by the property owner.

As much as possible, we have kept the original structure of the building. However, the structure of the building has had to be partly adapted with new holes in the floor for vertical shafts. It was important to retain the sense of space of the old factory premises. All electricity has been concealed and installations in the ceiling minimised. There are no large, winding ventilation systems here; ventilation has been kept down as far as possible. Both to give the rooms a cleaner look with high ceilings and to save energy. Flexibility has been a key concept for the building to have a long service life, but also to be able to easily adapt it for different activities today and in the future.

Mehr Details
Aufbau Bestandsdach Neues Lüftungssystem
Lüftungstyp Centralized
Type flow regime Overflow
Wärmerückgewinnung Ja
Feuchterückgewinnung Ja
Nennleistung 2600 l/s kW
Elektrische Leistung 7,4 kW
Regelung Konstant
KLIMATISIERUNG

The building is provided with comfort cooling integrated in the air handling units and distributed via ventilation air. Server rooms are supplemented with DX (Direct Expansion) cooling to cover peak power and redundancy.

The original structure was not greatly affected by the measures and all new installations were added with minimal intervention.

Mehr Details
New cooling system
Type NA
Distribuition system NA
Nominal power NA kW
Electric power 0,0 kW
BRAUCHWARMWASSER

In the premises, hot water is heated either by local water heaters or flow-through heaters. There is no VVC (Hot Water Circulation).

The original walls were not affected by the new installations.

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

ERNEUERBARE ENERGIE

Photovoltaik

Photovoltaik

Solar cells with string optimisers are installed on the roof for maximum electricity production. Solar cells have been installed by Eon and they own the plant on our property. The optimiser makes each panel less dependent on other panels in the same string. The electricity from the solar cells will be used for cooling supply air, charging electric cars, and as property and business electricity. The Energy Hub inverter combines solar energy, storage and charging.

As the roof is low-slope, the solar cells are not visible from the ground, so this has not affected the appearance.

The roof was originally covered by a black tarred roofing felt. In the project we added a new waterproofing layer (new tarred roofing felt) before installing the solar panels. The structure has not had to be reinforced for the photovoltaic installation.

Mehr Details
Photovoltaic System
Type NA
Collector area
Total nominal power 60,0 kW
Overall yearly production 58000,0 kWh

Energieeffizienz

Energieeffizienz
Energieausweis The report includes the calculation of the primary energy number. The energy balance calculation refers to buildings A, B and C. Calculations are mainly carried out with the programme IDA-ICE 4.8. Additions for special consumptions are carried out with hand calculations.The building's primary energy number includes energy for heating, hot water preparation, comfort cooling, property electricity but not operational electricity. Property electricity is the electricity necessary to maintain the property's functions, i.e. in principle electricity for circulation pumps, fans, etc. Business electricity is electricity linked to the users and their activities.
Freiwillige Zertifikate Nein
Energievrabrauch
Heizung
Berechnungsmethode IDA Indoor Climate and Energy 4.8
Documents:
Energirapport hus A,B,C 20201023.pdf
S
Energiberäkning Hus D.pdf
Energieverbrauch nach Sanierung 98 kWh/m2.y

Primärenergie
Berechnungsmethode IDA Indoor Climate and Energy 4.8
Energieverbrauch incl Brauchwarmwasser Ja
Energieverbrauch nach Sanierung 119 kWh/m2.y

Kosten

Finanzielle Aspekte

We have not had any funding other than to cover parts of the actual climate calculation (which was done in collaboration with IVL - Swedish Environmental Research Institute). We can already see that our operating costs have been reduced by having modern and optimised systems that talk to each other. With active material choices that last for a long time, we hope to keep maintenance costs down. In our project planning, we have worked hard to find solutions that are both sustainable but also contribute to keeping operating costs as low as possible.

Investitionskosten
Total investment costs
113 500 000 SEK exkl. moms., ungefär 9 639 385 euros exkl. moms (total)
Amount includes: Everything is included in the project budget. Design (from feasibility study to construction documents), regulatory costs, certifications, project managers, climate calculations, production, inspection, etc. All project costs are included in this investment.
Betriebskosten
Lifecycle cost
Nein