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Overcoming technical barriers to low-energy natural ventilation in office-type buildings in moderate and cold climates

Objective



Objectives

The main objective of this seven nation European project is to reduce primary energy consumption in buildings. This will be achieved by overcoming barriers to the uptake of natural ventilation and by encouraging the use of natural ventilation and "smart" controls as the main design option in new-build and major refurbishments of office-type buildings. It is intended for countries with low winter and moderate summer temperatures and where summer overheating from solar and internal gain can be significantly reduced by good natural ventilation. It also addresses the need to find good natural ventilation solutions to buildings in those urban areas where external air pollution and noise levels are regarded as being high.

Technical approach

The objectives are being addressed through three work packages. The first is identifying perceived barriers through an in-depth study with structured interviews based on questionnaires among leading designers, architects, building owners and occupants in seven EU countries. A European wide questionnaire has already been produced and preliminary interviews are being carried out.

The second is monitoring environmental and performance parameters of selected low energy office buildings in the EU countries to provide case studies. It is intended that shortcomings and advantages as well as the boundary conditions required for achieving successful natural ventilation will be identified.

The third is developing "smart" naturally ventilated technology systems and component solutions to overcome the barriers identified. Laboratory tests, field measurements and simulations will be carried out to address: - air supply in areas with external pollution and noise;
- constant air-flow inlets for winter ventilation in moderate climates; - NV systems with heat recovery for cold climates;
- components and intelligent controls for optimal night cooling; - integration of "smart" systems into buildings.

Expected Achievements and Exploitation

Results will be disseminated to a wide spectrum of the construction industry through OPETs and other organisations, and to standards organisations such as CEN. Conferences and workshops will also be targetted for dissemination of results. A NATVENT International Conference will be held at the end of the project to promote the results of the findings and encourage uptake of the natural ventilation solutions. Specific major achievements will be a Guide book and a promotional non-technical video for energy efficient natural ventilation and a computer simulation model for evaluating natural ventilation in office buildings. Other achievements will include technical and case study reports, guide books, and papers at national and international fora.

Coordinator

Building Research Establishment (BRE)
Address
Bucknall's Lane Garston
WD2 7JR Watford
United Kingdom

Participants (8)

BELGIAN BUILDING RESEARCH INSTITUTE (CSTC/WTCB)
Belgium
Address
21-23,Violetstraat 21-23
1000 Bruxelles
J&W Bygg and Anläggning AB
Sweden
Address
Slagthuset
211 20 Malmö
NETHERLANDS ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH - TNO
Netherlands
Address
5,Lange Kleiweg 5
2600 Aa Delft
Norwegian Building Research Institute
Norway
Address
123,Post Box Blindern
0314 Oslo
SBI - Statens Byggeforskningsinstitut
Denmark
Address
15,Dr. Neergaardsvej 15
2970 Hørsholm
Sulzer Infra (Schweiz) AG
Switzerland
Address
Neuwiesenstrasse
8401 Winterthur
Technische Universiteit Delft
Netherlands
Address
2,Mekelweg
2628 CD Delft
Willan Building Services Ltd
United Kingdom
Address
2 Brooklands Road
M33 3SS Sale