Recommended
More Related Content
What's hot
What's hot (20)
Similar to Affordable and replicable renovation of social housing fulfilling indoor climate and energy targets thanks to seven replicable renovation elements
Similar to Affordable and replicable renovation of social housing fulfilling indoor climate and energy targets thanks to seven replicable renovation elements (20)
Recently uploaded
Recently uploaded (20)
Affordable and replicable renovation of social housing fulfilling indoor climate and energy targets thanks to seven replicable renovation elements
- 1. RenovActive Affordable and replicable renovation of social housing – with seven replicable renovation elements 1 Nicolas Galiotto1, Peter Foldbjerg1, Jens Christoffersen1, Thorbjørn Færing Asmussen1, and Sabine Pauquay2 1 VELUX A/S, Department of Daylight, Energy and Indoor Climate 2VELUX Belgium, Brussels, Belgium Peter.foldbjerg@velux.com
- 2. A HEALTHY AND AFFORDABLE RENOVATION CONCEPT Ill-maintained homes are more common in rental properties due to tenants’ lack of ownership Energy poverty means that nearly 11% cannot afford to heat their home sufficiently Incorrect behaviours, e.g. lack of regular airing and the drying of clothes indoors, lead to a bad indoor climate The challenges of social housing associations Need for affordable and flexible solutions
- 3. Important renovation challenges of today and tomorrow
- 4. RenovActive - the 7 elements Growing from within Daylight treatment Respiratory channel 3rd skin Hybrid breathing Envelope upgrade New life space
- 5. Problem: Dark buildings Solution: Better daylight conditions
- 6. Before renovation After renovation Ground floor First floor Attic Improving daylight conditions
- 7. Challenge: Overheating Our selected RenovActive elements Improved insulation and air-tightness create a need for preventive solutions against excessive heat Use sun screening to prevent the building from getting too hot. Equip windows with automated sun screening. In summer, prioritise natural ventilation. In winter, combine natural and mechanical ventilation. Use cross-ventilation and stack effect to increase ventilation rates. For better thermal comfort, keep your home cool in summer. Ensure you have well insulated windows, walls and roof so you keep the heat outside. 3rd skin Respiratory channel Hybrid breathingEnvelope upgrade
- 8. Challenge: Mould and smells Our selected RenovActive elements Combine natural ventilation all year round and mechanical ventilation in the winter. Use adequate ventilation flows when the building envelope becomes more airtight (required by EPBD). Keep your home warm in winter. Ensure you have windows, walls and roof with no cold surfaces. Ensure good energy balance of windows (winter solar gains). Humidity in buildings is a major factor for discomfort and health issues. Reducing humidity in buildings helps cut asthma by ½. Respiratory channel Hybrid breathingEnvelope upgrade
- 9. Demand-controlled ventilation system and sun screening Sun shading • Control of indoor climate by automated external sun shading • Automated facade sun shading (Renson) • Automated roof window sun shading (VELUX) Hybrid ventilation system • A demand-controlled (temperature, humidity, CO2, odour) mechanical extraction ventilation (MEV – System C+) in combination with demand-controlled natural ventilation (NV) • When Toutdoor<14°C, air is taken in through window grills and extracted by the C+ unit (mechanical extract) • When Toutdoor>14°C, air is taken into the house through automatically opened façade and roof windows and also extracted through windows
- 10. RenovActive House – our prototype and proof of concept Before renovation After renovation Net energy demand for heating 700 kWh/m² 25 kWh/m² Primary energy consumption 1300 kWh/m² 82 kWh/m² Ventilation Not ok Ok Thermal comfort winter Not ok Ok Thermal comfort summer Ok Ok Energy class G B Energy cost for building services (excluding light and plug loads) 5,000 €/year 800 €/year
- 11. afterbefore RENOVACTIVE - HEALTHY, AFFORDABLE & CLIMATE FRIENDLY RENOVATION 17
- 12. before after RENOVACTIVE - HEALTHY, AFFORDABLE & CLIMATE FRIENDLY RENOVATION 18
- 13. before after RENOVACTIVE - HEALTHY, AFFORDABLE & CLIMATE FRIENDLY RENOVATION 19
- 14. before after RENOVACTIVE - HEALTHY, AFFORDABLE & CLIMATE FRIENDLY RENOVATION 20
- 15. before after RENOVACTIVE - HEALTHY, AFFORDABLE & CLIMATE FRIENDLY RENOVATION 21
- 16. RenovActive Affordable and replicable renovation of social housing – with seven replicable renovation elements 23 Thank you! Nicolas Galiotto1, Peter Foldbjerg1, Jens Christoffersen1, Thorbjørn Færing Asmussen1, and Sabine Pauquay2 1 VELUX A/S, Department of Daylight, Energy and Indoor Climate 2VELUX Belgium, Brussels, Belgium Peter.foldbjerg@velux.com
Editor's Notes
- We are aware that tenants might not always have the best behaviour indoors, when it comes to ensuring regular airings and maintaining a mould free environment. The tenants might also suffer from energy poverty, in the sense that they cannot afford to heat their home sufficiently. This is a situation that no one benefits from, and there seems to be a clear need for affordable and flexible solutions to this situation.
- What kind of challenges are your facing?
- We have created a small film that describes the concept, so please lean back and enjo
- What kind of challenges are your facing?
- So here we have the 7 elements, which we can dig further into if you would like to learn more about each of them [test click on one or two to demonstrate].
- What kind of challenges are your facing?
- 1) Protect yourself form direct sunlight which is the first cause of overheating in houses sunscreen is the most efficient way. Although it is less critical than in winter, good insulation will help keep your home cool (Heat losses are proportional to the temperature difference between the inside and the outside. In winter it goes up to 30 ° C while in summer it is limited to about 5 ° C) 2) You can also protect yourself from overheating by choosing the right glass with a low shading factor (new glass with SF 0.3). 3) After you’ve protected yourself well from the sun, you’ll try to create natural ventilation to remove heat from the house 4) Finally, a stack effect will help that natural ventilation you’ve created
- Avoiding cold surface is necessary to avoid mould and smell A good ventilation rate can help avoid mould even if there are some cold surfaces. Although mechanical ventilation could do the job, natural ventilation will allow larger ventilation rate. Hybrid ventilation is so a great help. Stack effetc will optimse the natural ventilation efficiency.
- Avoiding cold surface is necessary to avoid mould and smell A good ventilation rate can help avoid mould even if there are some cold surfaces. Although mechanical ventilation could do the job, natural ventilation will allow larger ventilation rate. Hybrid ventilation is so a great help. Stack effetc will optimse the natural ventilation efficiency.
- The RenovActive Concept was first implemented on this house, which we call the RenovActive House. The house was old and rundown, and in a very bad condition. But after applying our renovation concept, the house flows with daylight and fresh air. It is very attractive and energy efficient – and our calculations tell us that the energy bill can be reduced by up to 50%. --------------- 1 Manages more than 3600 dwellings in the Anderlecht municipality
- The aim of the RenovActive project: to create a new showcase to promote the Active House vision towards the market of social housing and one-family homes to develop a sustainable and affordable renovation concept suitable for large-scale renovation and modernisation. A concept that can easily be reproduced both in financial and technical terms accessible for everyone