English

Surface temperature measurements were performed in a deep street canyon, during summer period, in the center of Athens. Surface temperature was measured on an hourly basis, at several spots, in the external facades of buildings, pavements and at ground level inside an urban canyon. At the same time experimental data of air temperature were collected through extensive monitoring at four different heights in the center of the urban canyon. Based on these measurements air temperature vertical stratification was analyzed and interpreted as a function of the coating used.

The treatment of roof space with cool paint or vegetation is a widely employed urban heat mitigation strategy. As the allocation of roof space for social activity becomes more prevalent in the urban environment, there is a need to understand how cool roofs and green roofs can affect the outdoor thermal comfort of its users. 

Airtightness and controlled ventilation are important factors affecting energy use and indoor air quality. Airtightness tests were carried out on nine naturally ventilated social houses in Ireland. Subsequently, four of the houses were retested following energy efficient upgrading. The upgrading largely consisted of improving fabric insulation and where required the mandatory installation of passive wall vents. Interviews were conducted with the occupants to gain their perspectives of airtightness and ventilation in their homes.

Within the framework of the Dutch participation in the IEA Annex XIV" Condensation" field experiments have been carried out to study airborne moisture transport in realistic circumstances. The experiments were done in an unoccupied 3-storey dwelling in Leidschendam in the Netherlands. Some of the results will be discussed in this paper.