Both building performance and occupants' thermal comfort are influenced by heat conduction, convection and radiation as well as condensation/evaporation. This paper presents an analysis of thermal comfort in buildings subjected to simultaneous heat and moisture transfer using numerical techniques. A model based on computational fluid dynamics has been developed for predicting the indoor thermal environment. Assessment is made of the effects of radiation heat transfer and moisture condensation on the accuracy of predicted indoor thermal comfort.
The paper describes the characteristics of different types of pollutant sources in the way that they are experienced in a fixed locality in an urban area. The locality in this sense can also be a building or part of a building (a ventilation inlet for example). The most important parameter is the distance of the polluting source and therefore the characteristic features of sources at different distances are discussed.
Many ambient pollutants are in particulate form arid there is a need to sample them for a variety of reasons. A wide range of samplers is available for different purposes but, unfortunately, there does not seem to be a very good understanding of the reasons governing the choice of samplers for different tasks. The present paper attempts to address some of these problems by reviewing briefly the types of sampler used for collecting airborne dust in the ambient atmosphere and the reasons for their choice.
A knowledge of Russian building thermal-energy codes in effect in the post-World War II era is necessary for estimating the performance of the existing building stock, quantifying the impact of energy conservation retrofits, and estimating the benefits of more stringent codes. This paper begins with a thorough review of the prescriptive-based national codes that applied to heated buildings constructed in the Soviet era. The codes defined all envelope thermal performance requirements for space heating.
Login