Can natural-ventilation techniques really cope with the demands of hot summer days? That is the question that Monodraught's Terry Payne was seeking the answer to when he invited a BRE team to monitor an installation at the University or Hertfordshire
All internal combustion engines produce exhaust gases containing noxious compounds: carbon monoxide (CO), nitrogen oxides (NOx, carbon oxides (CxHy) and smoke. With the help of a mathematical model the concentrations of some dangerous substances at the end of the tunnel were calculated, and were replaced by a criteria! number. A corresponding computer program was also developed thus enabling quick and simple calculations of some concentrations and the criteria! number.
This latest addition to the University of East Anglia Campus cost 20 per cent less to build than a conventional building of similar proportions and uses 80 per cent less energy.
NatVent™ is a European JOULE project that has studied ways of 'Overcoming technical barriers to low energy natural ventilation in office-type buildings in moderate and cold climates'. A consortium of nine partners across seven countries - Great Britain, Belgium, Denmark, the Netherlands, Sweden, Norway and Switzerland - carried out this project. It set out to:
This paper gives an overview of the EC NatVent (TM) project on 'Overcoming Technical Barriers to Low Energy Natural Ventilation in Office Type Buildings in Moderate and Cold Climates' which has been carried out under the European Commission Joule Programme 1994-98. The project was targeted at countries with low winter and moderate summer temperatures where summer overheating from solar and internal gain can be significantly reduced by low-energy design and good natural ventilation.
Heat recovery in ventilation systems for office buildings in cold climates is necessary for tworeasons:1. To obtain acceptable indoor thermal comfort by preheating of fresh air,2. To reduce ventilation energy lossThis paper describes a pilot system built in the laboratory of the Norwegian Building ResearchInstitute, NBI, based upon the concept of an advanced fan assisted natural ventilation systemwith heat recovery. The concept was developed by NBI.
One of the major factors in human comfort is the air quality, which occupies a specific environment and is usually renewed through natural ventilation. However, isolated underground spaces do not benefit from this factor and are often subject to high relative humidity, poor air quality, pollutant emissions and penetration of moisture from the surrounding soil and ground base. Due to such negative characteristics, underground spaces are generally recognized as undesirable living environments by most of Koreans.
Login