climate

Building design and building construction technology has improved in the past decade and the concern over indoor air pollutants and their health effects has increased. A multi-point, multi-pollutant air sampling and analysis network was insta

Air infiltration typically accounts for a third of the energy loss in a heated building. The driving forces for natural air infiltration are wind and temperature differences. For a given combination of weather conditions the amount of air infiltration is determined by the character of the building envelope, mainly its airtightness. A useful technique in characterizing this housing quality is to measure air leakage. An air leakage standard for new construction has been in effect in Sweden since 1975.

Gives a survey of the weather parameters used for the "Danish test reference year TRY" and the corresponding set of data from meteorological observations made during a 15 year period. Describes the measuring methods used for the most important weather parameters, and presents selected tables and diagrams with some of the most important weather data. Gives possible fields of application for the test reference year.

At present, there are many design and investigatory methods(often supported by computer programs)that take account of the reaction of the building and its heating and cooling systems to outdoor conditions as they vary with time. This makes it desirable to have some agreed sample of weather to allow contrast and comparison between various methods
for predicting building and system behaviour, and between individual design cases to be on a common basis.
The proposals below although evolved from work in the authors' establishments have been discussed more widely and

Sets of hourly data, representing the long term mean of both temperature and solar radiation, have been prepared for 21 U.S. metropolitan areas. The 8,760 sequential hourly values for all weather elements, including solar data, have been placed on magnetic tape for use in computer calculations of energy requirements.