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ENERGY EXPRESS

A new model for the integrated delivery of efficiency measures to homes

Third party practical examples and case studies

(France, Netherlands, Sweden, Slovenia)

June 2012.

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BEEM UP project

Building energy efficiency for massive market uptake

Countries: France, Netherlands, Sweden

The overall objective of BEEM-UP is to develop and demonstrate cost-effective and high performance

renovation of existing residential multi-family buildings, drastically reducing the energy consumption:

at least 77% reduction in energy demand for space heating, 45% reduction in the energy need for hot

water and 42% in lighting, while ensuring a comfortable and healthy living environment and favouring

the integration of renewable energy. The action will directly lead to a total energy reduction of

4GWh/year, and 1041 Tonnes CO2 reduction per year.

Example (Netherlands):

The area called the Kuyperwijk is one of the former growth areas, built in the 1950’s, of the city of Delft. The pilot site in Delft refers to Complex 5 of Kuyperwijk area, built in 1958, and it particularly concerns 80 apartments and 28 attached houses (7326+2355 m2 gross living area).

Complex 5, Kuyperwijk Block of apartments Attached houses

After the refurbishment that took place on 1980’s, complex 5 now needs and energetic and cosmetic overhaul. The retrofit is expected to bring the energy label from F to A. It is expected that an improved energetic and visually attractive complex will do good to the entire area. Original situation

Envelope Walls: no insulation but 4 cm air Basement: too humid 60 cm air Roof: no insulation

Windows Only double glazing in the living room, aluminium frames over wood

Heating Different types of old gas heaters. Not insulated distribution.

Hot water No special measures.

Ventilation system Old mechanical ventilation.

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ICT – energy management (incl. smart meters)

None.

Lighting Incandescent light bulbs

Renewable Energy Source None

Other energy saving None

Final situation

Envelope Walls: 4,5 m2 K/W Basement/floor: 5,0 m2 K/W Roof: 4,0 m2 K/W

Windows HR ++ windows with layer of metal foil. 1.6 times better insulation than double-glazing.

Heating HR 107 boiler with use of solar panels on the houses. Insulated distribution.

Hot water Water saving showers.

Ventilation system Improved mechanical ventilation Clima Rad heat recovery connected to the living room

ICT – energy management (incl. smart meters)

Feedback system mounted to the wall and it will include both functions to set temperature and weekly schedule as well as feedback on actual usage of electricity and gas.

Lighting LED Lighting in common areas.

Renewable Energy Source Solar energy on roof for warm water and heating.

Other energy saving Focus on tenant behaviour and awareness-raising during and after retrofit is expected to lead to further reductions in energy consumption

Example (Sweden):

Brogården in Alingsås is an area of multi-dwelling buildings built in 1973. The area comprises a total of 300 flats, divided into 16 houses with 2-4 floors each. All flats have a balcony or a patio. The Brogården area is currently undergoing an extensive renewal, which started on the spring of 2008. The building owner, Ahem, and the contractor, Skanska, bring the last 8 blocks of flats (144 dwellings, 14860 m2 gross living area) into the BEEM-UP project, in order to develop the processes and solutions for making the retrofitting financially viable on a large scale. The aim is to reduce the very high energy consumption.

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Brogården is classified by the municipality as an area of conservation value. Because of this building materials have been chosen to resemble those of the original building. The first blocks in the area have been renovated as an initial comprehensive pilot for energy efficient refurbishment towards passive house performance. For the final 8 blocks, the aim is to bring this process up to scale, and develop cost-efficient solutions to make energy efficient refurbishment a viable alternative for the remaining housing stock. Original situation

Envelope

Walls: (Curtainwalls) Gypsum boards on non loadbearing wooden studs, 95 mm insulation and façade bricks. To be demolished in its entirety. Basement: Cast-in-situ concrete walls without any insulation. Roof: 300 mm insulation on roof slab. Wooden rafters with props on roof slab.

Windows Single pane with supplementary aluminium sash and one additional pane (U value = 3.0)

Heating District heating. Water carried heating with radiators.

Hot water District heating.

Ventilation system Mechanical exhaust with air intake through window vents.

ICT – energy management (incl. smart meters)

No individual measuring.

Lighting Incandescent light fittings.

Renewable Energy Source

District heating is renewable to 98%.

Other energy saving None

Final situation

Envelope

Walls: Previous wall is replaced by new wall with several layers of insulation and slotted steel studs. In total 440 mm insulation. Basement: 100 mm expanded polystyrene extends 1 meter below ground level. 100 mm drainage panel downwards to ground floor. Roof: 400 mm new

Windows NTriple pane window with insulated glass (U-value = 0,85)

Heating Recovery system in combination with district heating.

Hot water District heating as before.

Ventilation system Balanced ventilation with heat recovery. Single unit serves entire building.

ICT – energy management (incl. smart meters)

Electricity is measured individually; hot water is monitored remotely for each flat; heating is measured for each staircase.

Lighting Low energy fittings. Low energy or halogen lighting and LED lighting in staircases.

Renewable Energy District heating and PV on roof of 4 buildings.

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Source

Other energy saving The tenants receive energy-saving tips

Example (France):

The building is located in the centre of Paris, 800 m from Montparnasse train station, at the corner of Rue du Cotentin and Rue Falguière. It is composed of 87 dwellings (4,352 m² gross living area) built around 1950. In 1993, the building underwent renovation (outer insulation, double glazed windows, boilers), but it needs a major upgrade to become a pilot for bringing their housing park to the low energy standard for renovated buildings (less than 104kWh/m² for HVAC, hot water and lighting). The surrounding buildings have similar heights.

The operation was initiated in January 2009. The main direction for the retrofitting has been selected, and will be refined in collaboration with the design team, that was contracted in October 2009. The complete technical diagnosis is available since June 2010. The real design phase will start when the BEEM-UP project kicks off. Retrofitting works start in September 2011. The building is oriented to North and South on rue du Cotentin, East and West on rue Falguiere All dwellings have small balconies, 7th floor dwellings have a large terrace with a view on Paris. Original situation

Envelope Walls street side: concrete + 2cm sandwich insulation Walls back side : concrete + 2 cm sandwich insulation + 8 cm ETICS Basement: concrete Roof: concrete + 5cm insulation

Windows PVC double glazing, 20 years old

Heating 2 collective gas boiler

Hot water Individual electric boilers have been installed in 1993. Originally hot water was provided by a collective boiler located on the roof.

Ventilation system Natural ventilation grids in the kitchen, bathroom and toilets (apparently no ventilation problems)

ICT – energy management (incl. smart meters)

None

Lighting Regular incandescent light bulbs

Renewable Energy Source None

Sanitary hot water None

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Final Situation

Envelope Walls street side: + 20cm ETICS EPS λ032 Walls back side : New 20cm EPS ETICS λ032 Basement: + 10 cm insulation EPS λ032 below ceiling Roof: New 10cm insulation PUR λ024 on ceiling

Windows New PVC double glazing, U= 1,5 W/m².K

Heating New condensing boilers for heating and warm water

Hot water Focus on tenant behaviour and awareness-raising during and after retrofit is expected to lead to further reductions in energy consumption.

Ventilation system New controlled mechanical ventilation

ICT – energy management (incl. smart meters)

Cost optimal control solutions (from individual solutions like chronostat, radiator zone control, meter data for individual billing, to full home automation). Exact optimum will be defined during integration with total system and specific simulation.

Lighting All public spaces will be fitted with low-energy light systems. All tenants en-couraged to switch to low-energy lighting.

Renewable Energy Source

Heat recuperation from waste water

Sanitary hot water Focus on tenant behaviour and awareness-raising during and after retrofit is expected to lead to further reductions in energy consumption.

Additional Project Information:

Project Summary

Project WebSite

Monthly Status Reports / France

Monthly Status Reports / Netherlands

Monthly Status Reports / Sweden

…more…

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Municipality of Ljubljana

General info

Country: Slovenia (capital of)

Area: 275 km2

Population: 280,000

Density: 1,000 / km2

Web: www.ljubljana.si

Relevant projects

In 2004 one street in Ljubljana joined project SUNRISE (5th EU Framework on research and development;

please refer to Appendix 1 and 2). The project was focusing on heating and isolation of the buildings, and

on the technical evaluation and monitoring of the existing heating solutions. After the evaluation, the

solutions carried out included:

changing the shutters to those that absorb and reflect back more sun during the summer, and

preserve more inside heat during the winter

making minor changes and addition with regards to isolation (windows, entrance doors, balcony

doors)

monitoring energy consumption to identify biggest consumers (fridge, stove, heater etc) and

adjusting energy consumption accordingly (lowering thermostats for 1 degree and similar)

More about the project(s) on www.jssmol.si (please use google translate, as the website is only in

Slovenian)

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Appendices:

(1) EU 5th Framework for Research and Technological Development

In order to meet the challenges of the transition to a "knowledge-based society", the Fifth Framework Programme was different from its predecessors in terms of both content and operation. The intention was to concentrate research on current socio-economic problems, i.e. research with the potential to accomplish the changes expected by the general public. Therefore, the EU's Fifth Framework Programme for research and technological development intended to make a substantial contribution by helping:

companies get to grips with the knowledge and expertise - increasingly technological in nature - necessary to face up to the challenges presented by the new millennium and increasing globalisation;

European society use technical progress to find innovative solutions to the major problems which confront it, such as employment, health, environment, energy supply, transport and mobility, education and training;

Europe's citizens enjoy a high quality of life, and providing the conditions that can ensure their personal and material development.

Consequently, FP5 was structured with four Thematic Programmes (each with Key Actions and Generic Activities) and three Horizontal Programmes

Thematic Programmes

Quality of life and management of living resources User-friendly information society Competitive and sustainable growth Energy, environment and sustainable development

Horizontal Programmes

Confirming the international role of Community research Promotion of innovation and encouragement of SME participation Improving human research potential and the socio-economic knowledge base

More about the 5th Framework Programme:

http://ec.europa.eu/research/health/5th-framework-programme_en.html

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(2) The SUNRISE Project (Focuses more on new buildings, although some parts applicable to

existing housing facilities)

The Project approved by the 5th Framework Programme of the European Community aims to prove a

reduction in energy consumption and CO2 emissions, if compared to conventional residential

buildings.

The SUNRISE project (Strengthening the European Photovoltaic Sector by Cooperation with important

Stakeholders) aims to improve the interaction between the PV sector and all the relevant stakeholders

such as construction sector and utilities.

Additional information:

Paper on Integrated strategies for the creation of sustainable communities in Madrid (the “Eco Valle”

operation)

More on Eco Valle

The European Photovaltic Technology Platform

PV Sunrise (PV diffusion and network integration)

Recommendations for unified technical regulations for grid connected PV systems