The aim of that study is to explore the influence of vertical air temperature gradient and room air temperature (at 0.6 m height) on overall and local thermal comfort of 30 tropically acclimatized subjects in a room served by Displacement Ventilation (DV) system.

The aim of this study is to investigate the distribution of different body parts’ surface temperatures in the space served by displacement ventilation (DV) system. The experiment was conducted in a Field Environmental Chamber in the tropics. The manikin

A draft perception study of Displacement Ventilation (DV) system in a Field Environmental Chamber (FEC) with tropically acclimatized subjects is presented in this paper.60 subjects, 30 males and 30 females, were exposed to 3 vertical air temperature gradients, and 3 room air temperatures, for a 3 hour-period. Room air temperature had greater impact on percentage unsatisfied due to air movement than temperature gradient.

Thermal performance of climatic environments in Singapore for natural ventilation has been investigated. Weather data have been visually analyzed according to the following parameters : dry bulb temperature, relative humidity, wind speed and solar radiation . A regression model derived from 538 field survey data for natural ventilation in Singapore has been used for thermal analysis of local climate.
The conclusion of the authors is that comfort indoor environment could be achieved by natural ventilation for residential buildings in Singapore.

This paper provides on the one hand data for the improvement of indoor environment in existing high-rise residential buildings in hot summer and cold winter region of China, and on the other hand helps for the designing of HVAC system of such buildings.

The need of cooling schools in Scandinavia is only for a short period of time .The ventilation system often cannot provide the necessary cooling without causing draught. So an additional cooling by an internal high velocity system has been introduced that cool people . A downward air stream of five minutes duration is created by that system that blows the rising thermal plume above a person away.

In this paper, thanks to the method of numerical simulation, the influence of building factors on indoor thermal environment of natural ventilated building is analysed . It is proved that the rate and the schedule of natural ventilation are very important factors that influence the indoor thermal environment of builidings in cold zone.

For that study, experiments were carried out to evaluate thermal comfort in highly airtight and insulated rooms, where floor heaters and air-conditioners were installed. Three air temperature conditions were applied for each of airconditioner or floor heating tests.

Subjective experiments were conducted to investigate the effect of three different types of Task air-conditioning systems (3DU+, PEM, and TU) on thermal comfort in a climate chamber - conditioned at 28C/50%RH with task systems and 26C/50%RH without them.- It was found that these systems were effective in providing thermal comfort.

Indoor air quality (IAQ), is one of the key determinants of the acceptability of indoor environments. The computational approach, based on computational fluid dynamics (CFD), is used more often than the experimental approach to study IAQ problems . The software Airpak 2.1 is used to simulate air flow organization and thermal comfort of an office. The aim is to facilitate the production of dynamic multifaceted structure that could be used to improve the quality of indoor environments and help maximize the potential of its inhabitants.