The velocity field in circular ducts has been measured downstream 8 representative disturbances (elbows, junctions, damper, ...). The uncertainty in flow rate calculation has been defined.

This paper deals with two general approaches used to determine multizone air flow by tracer gas experiments : a tracer gas decay model and a simultaneous release of n different tracer gases in n zones (n x n approach) . The results show a suitable agreement between the model and measurements made, at work-time, in a 3-store building equipped with an hybrid ventilation system.

A new type of thermal manikin DRESSMANN (Dummy Representing Suit for Simulation of huMAN heatloss). is presented : it consists of an overall, that can be worn by a person or a manikin, on which up to 32 heated sensors (artificial skins) can be fixed everywhere by velcrose fastening.
DRESSMANN presents the advantages of heated dummies and of small sensors . It can be used in buildings, vehicles, planes or trains.

The deposit of particles on ceilings close to ventilation outlets is mainly caused by the features of mixed ventilation, turbulence and induction. This study aims at solving that annoying problem of particle deposition, for the ventilation industry. The development of a clean outlet is eased thanks to a new experimental approach using an optical technique (in so far as the experimental technique and the CFD calculations are too inefficient).

The paper describes the test procedure and sums up the criteria for the air handling components and systems defined in the Finnish guideline for ventilation equipment Test methods, such as a measuring method of mineral fibres released into airflow, and a method for measuring the odour threshold of processing oils have been added to the guideline.The experience from the labeling system has been very positive .

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.

The author expresses the evaporative efficiency of sweating as a function of wetted skin surface area.This allows to predict mean skin temperature of human body as a function of 4 environmental factors and 2 human factors. With these parameters skin temperature and wettedness for 2 typical cases have been calculated.

A seated, unclothed and bald manikin is used for the experiment. A numerical method calculates the view factors between individual segments of a thermal manikin , and between the outer surfaces and the body segments. The segment to segment radiation is the subject of the research : radiation between segments may be significant and the local differences in radiative heat loss may cause discomfort and cannot be ignored.

This study makes clear that mean skin temperature and skin wettedness do not remain constant but may vary under constant thermal sensations of "slightly warm", "warm" and "hot". The relationship between mean skin temperature and skin wettedness under the constant thermal sensation of "warm" is adequaltely expressed through a convex curve with a negative slope.

This study is divided into 2 parts : 1. Discussion of the theory of a measurement method for configuration factors using reflections of a curvilinear mirror.2. Estimation method of configuration factors for medium/large scale spaces that can be used instead of methods using the diagrams.