In the aim of investigating the thermal environment and thermal comfort in residential buildings in Harbin, northeast of China, a field study was performed on a total of 120 participants during the 2000-2001 winter. To collect the measured parameters of the indoor environment, the Predicted Mean Vote and Predicted Percentage of Dissatisfied, an indoor climate analyzer along with a thermal comfort meter made in Denmark were used . The results are presented.

This article deals with the effect of a photocatalytic air purifier on perceived air quality tested in rooms polluted by typical indoor pollution sources. The rooms were ventilated at three different outdoor air supply rates. The results show that the outdoor air supply rate can be supplemented by a photocatalytic air purifier when the indoor air is polluted mainly by building-related sources.

For that study an aircraft cabin with realistic pollution sources was built inside a climate chamber to determine the extent to which passengers’ perception of cabin air quality is affected by air temperature. The temperature inside the cabin was set at

Low humidity in the aircraft cabin environment appears to be a possible cause of symptoms experienced during long flights. For that study an aircraft cabin with realistic pollution sources was built inside a climate chamber, it can provide fresh outside air at very low humidity . Four groups of 16-18 subjects were exposed to the four conditions of outside air supply rates. - 1.4, 3.3, 4.7 and 9.4 L/s per person (3, 7, 10 and 20 cfm/p) - yielding average humidity levels of 28%, 16%, 11% and 7% RH, respectively. Results and conclusion are presented.

The aim of that study was to observe if a 25-30% reduction of outdoor ventilation flow, during heating season, influenced the perception of the indoor environment. The importance of the combination of technical measurements with a longitudinal evaluation of occupant's reactions is underlined.

How much do we really know about ventilation ?It is admitted that for a good indoor air quality in a building, the amount of outdoor air ventilation is one of the most important determinants , but many critical questions and misunderstandings exist :Do we know the quantity of outdoor air is even needed in buildings? And about the ventilation requirements : they treat all the huge variability in buildings the same.

This paper, after a general presentation of what indoor air quality is, discusses the development of new methods for the improvements of IAQ in maintaining or decreasing ventilation and energy use.

The design of "simple" ventilation systems in compliance with Standard 62-2001 Addentum 62n requirements has already been discussed in articles. This paper focuses mainly on the design of a more complex set of ventilation systems, namely single-path multiple-zone recirculating systems.The calculation procedures to reduce both underventilation and unnecessary over-ventilation are clarified and help for determining system ventilation efficiency.

This article presents the results of a US department of energy's building technologies program whose aim is to create technologies for low-cost-near-zero energy residences equipped with geothermal or dehumidifying heat pump, insulated panels for the walls, roof and floor, solar system. In this paper a comparison between 4 Zero-Energy-Houses and a traditionally built residence is made . Energy use and construction costs are presented.

The design and realisation of natural ventilation systems is an important research topic into the ability of buildings to respond to climatic conditions, using parts of the buildings themselves as indoor microclimate control systems. This research aims to evaluate how the stairwell can be an essential element of natural ventilation in low-rise buildings. In this study, the main innovation is the different architectural and functional conception of traditional building components such as the stairwell.