Measurement of flow rate in a duct by investigation of the velocity field - Uncertainty linked to the position and number of measurement points.

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.

Definition of airflow parameters from records of flow visualization using a fog

The paper deals with air flow visualisation using fog generators. This technique has been applied to show air jets boundaries in several cases, in order to design flow generating equipment in industrial buildings.

Mitigation strategies for reducing childhood exposure to ETS in the home

In the light of difficulties associated with giving up smoking, which is the most effective strategy for household members to adopt to reduce children’s exposure to environmental tobacco smoke (ETS) in the home, an evaluation has been undertaken of other

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.

CFD simulation of airflow in room with multi-cone ceiling diffuser using measured velocity and turbulent parameters in large space

Model experiments were conducted to know the airflow in a room equipped with a ceiling multi-cone diffuser A comparison between the results of CFD and the model experiments has been done.

Evaluation of CFD-modelling methods for air diffusers

The main objective of this paper is to describe methods for characterising air diffusers for CFD simulation of the room airflows. As a basis of work, a circular diffuser was used for working out and testing those methods.

Numerical study of partition-type FCU personal air-conditioning system

The intention of the authors is to find a proper air conditionning system to achieve higher IAQ environment.They consider a new air-conditioning system that uses both a Partition-type Fan-Coil Units system (PFCUs) with a Dedicated Outdoor Air System (DOAS).

Experimental and numerical study on simultaneous temperature and humidity distributions

This paper deals first with experimental measurement performed in a test chamber to investigate the characteristics of temperature and moisture distributions. The effect of moisture accumulation in building material is studied too. Then a new approach is introduced to describe the simultaneous heat and moisture transfer. The results has been compared with a CFD model.

Modeling of complex air diffuser for CFD simulation. Part 1 : experiment and numerical simulation of a complex air diffuser under isothermal condition

Part 1 of this paper gives first an outline of the experiment (full-scale measurement of the air velocity carried under isothermal condition), then discusses the 2 modeling methods - the BOX method and the P.V. method - used for CFD simulation.The results of calculations with the 2 methods showed good agreement with the experimental data.

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