Creating velocity variations in a whole room

This paper investigates the possibilities to create velocity variations of that type : (change from "low" to "high" velocity and then back "low" velocity again) in a whole room using standard velocity components. The results show large differences at individual points, but the mean value of all 8 positions in the room shows an expected behaviour.

Human preference for air movement

For that study, 40 subjects were exposed to controlled air movements ( slightly cool, neutral, slightly warm thermal sensations at 18 °C, 20°C, 23°C, 26°C and 28°C). Their responses were collected. Results indicate that air movement preference depends on

Correlations between the indoor airflow and thermal comfort criteria

Influences of architectural parameters , solar heat gain of glazing envelopes, thermal inertia on opaque walls indoor air velocity and physiological parmeters has been taken in account to estimate indoor thermal comfort for occupants.

Ventilation, energy, and indoor air quality

This paper presents a complete overview of energy and indoor air quality issues related to ventilation. It comments ventilation in standards and in practice and gives information on the human response, health effects, air distribution, ventilation efficiency and different types of ventilation systems.

Measurement of the airflow and temperature fields around live subjects and the evaluation of human heat loss

A special garment was developed to measure heat transfer coefficients (convective and radiative) of the clothed human body. It was tested on male subjects operating seated office work in a environmental room. The measured convective and radiative heat transfer coefficients are in good agreement with the PMV model and a number of previous publications.

Application of computer simulated persons in indoor environmental modeling

Different geometries to simulate a person in an indoor environment numerical simulation have been evaluated with respect to local and global air flows, as well as convective heat transfer. Results show that the geometry of the computer simulated person influences only the local flow around it.

Design and testing of a garment for measuring sensible heat transfer between the human body and its environment

A specially designed garment for direct physical measurement of both the convective and the radiative components of human heat loss was developped, using sensitive heat flux transducers housed in clothing pockets. Investigation with a human subject showed the advantages and the precautions to be taken using this equipment.

Thermal comfort for sedentary and moderate activity levels

Conditions of human thermal comfort was studied as function of the following parameters : dry bulb temperature (22.8 to 27.8 °C), relative humidity (20 to 65%), air velocity (0.15 and 0.25 m/s) and activity level (1 and 2.3 met) with a panel of 256 person

Measurement and impact of outdoor air supplied to individual office building occupants on indoor air quality.

Describes a new method used to measure the amount of outdoor air supplied to individual building occupants, under field conditions. The method includes factors associated with office design. It is based on the measurement of the constant release of tracer gas into the outdoor air in the ventilation system. The obtained values are termed outdoor air supply indexes (OASIs). States that the type of diffuser, office, partition and return air inlet and their position relative to each other can have a considerable effect on the amount of outdoor air received at individual work stations.