The paper proposes the definitions of the micro-climate zoned indoor and the controlling, it says apply the micro-climate zoned controlled can decline load and reduce the energy of the air-conditioning system. The paper proved the effectives measures of realizing the microclimate zoned controlling by applying airflow partition or displacement ventilation. The aim of this paper is qualitatively found a basal definition of microclimate controlling.

With the increasing number of private cars possessed by salaried people, there has been a change in the condition of ventilation for underground garage. In accordance with this new situation, and from the point of energy saving, this article specially points out an approach, which can determine and control the quantity of ventilation for underground garage.

As researches on air delivery to air-conditioning room are turning from static mode to dynamic mode, especially the natural airflow simulation plan is being put forward, these, in turn, require more thorough understanding and more effective evaluation method of various airflow turbulence patterns. On the basis of large amount of carefully controlled measurements of air velocities which are generated in air-conditioning room, outdoor and by local fan, a detailed calculation and analysis has been made in the light of the rapidly developing nonlinear science - chaotic theory.

This paper deals with the performance evaluation of three types of low-level ventilation systems: the wall displacement ventilation, the floor displacement ventilation and the impinging jet ventilation systems. The comparison between the performances of these three systems is based on air movement, comfort assessment, mean age of air and ventilation efficiency for contaminant removal. Data from measurements and CFD simulations are used for comparisons.

If the swirling airflow is formed in the room, the ventilation effectiveness in the room becomes better than by the other method, as the airflow pattern has the fixed direction and the stable airflow path is built up. To make swirl the room air, it is necessary to supply getting larger airflow rate toward outer zone from center. To supply such an airflow distribution simply is used the multi-openings square duct. The reason is that the supply airflow distribution of multi-openings duct has a tendency to increase toward the tip.

The application of Computational Fluid Dynamics (CFD) for ventilation research and design of ventilation systems has increased during the recent years. This paper provides an investigation of direct description of boundary conditions for a complex inlet diffuser and a heated surface. A series of full-scale experiments in a room ventilated by the mixing principle have been performed for validation of the models. The experimental results include measurements of temperature as well as measurements of velocity and turbulence by Laser Doppler Anemometry (LDA).

The conditioned air is an important element in healthcare applications. One of the main objectives of supplying conditioned air to healthcare facilities is to create proper comfortable combination of temperature, humidity, and air motion as well as to remove airborne bacterial, microorganisms, and air contaminants. So the air distribution must meet specified conditions of air change rates, velocity, pressure, cleanliness, temperature, humidity, and noise level.

In this paper, the distribution features air-conditioning temperature field are discussed with numerical simulation methods for semi-opening large space building. Important influential factors, such as ambient air parameters space characteristics of semi-opening large space building and the method and parameters of air distributing, are presented.

The paper simulates the airflow and temperature fields in a dome Shanghai International Gymnastics Center (SIGC) at one summer day with the computational fluid dynamics (CFD) software PHOENIS. The comparisons of indoor vertical temperature distributions show that the predicted results are in good agreement with the on-site measured ones. And some analyses on the thermal characteristics in the actual dome are carried out.

Natural ventilation can be an effective measure to minimize building energy consumption and to improve indoor air quality. This study focuses specifically on buoyancy-driven single-sided ventilation design using computational fluid dynamics (CFD) techniques. Simulations are performed for a student dormitory under typical conditions of outdoor temperature, cooling load, and opening size by use of an indoor stack model and a combined indoor and outdoor stack model. The simulation results are also compared with semi-analytical solutions.