2019年11月1日 · In this paper, the theory, performance, practical applications, limitations and solutions pertaining to ventilation and air distribution methods are critically reviewed. Since many ventilation methods are buoyancy driving that confines their use for heating mode, some methods suitable for heating are discussed.

空气分布特性指标（ADPI：Air Diffusion Performance Index）定义为满足规定风速和温度要求的测点数与总测点数之比。

Diffusion coefficients (D 12) for gases in large excess of air at temperatures ranging 0 - 400 °C. Fick's first law states that a substance will flow from a region with high concentration to a region of low concentration .

To study the air flow mode and the indoor air flow fields in large space is of great significance to the energy conservation of AC systems and thermal comfort of occupiers. In this paper, a large space building with stratified air conditioning system is chosen as a research object.

Air diffusion is the process of distributing air evenly and efficiently within a space or system, which is essential in heating, ventilation, and air conditioning (HVAC) systems. The goal of air diffusion is to ensure that conditioned air is delivered to specific areas or zones within a building or enclosure, maintaining desired temperature ...

• Objective of space air diffusion • Evenlydistribute conditioned & outdoor air to provide healthy & comfortable indoor environment, or appropriate environment for process, at optimum cost • Last process of air conditioning • Take place entirely within conditioned space • Directly affect the occupants, but it is difficult to trace ...

2024年11月1日 · What is Air Diffusion? Air diffusion involves the movement of supply air into a space where the mixing with the existing indoor air is minimal. This approach is essential in maintaining a stable and comfortable indoor environment while ensuring energy efficiency .

The performance of an air distribution system within a room/zone can be rated in terms of ADPI (the Air Diffusion Performance Index). Among the several evaluation methods used to design air distribution systems based on flow rate, sound data, isovels and comfort criteria, the ADPI selection method is quite commonly used.

Diffusing air into water is both an art and a science. For three generations, Air Diffusion Systems (ADS) fine bubble aeration has naturally treated billions of gallons of water and wastewater around the globe at thousands of clean water, domestic, and industrial installations.

2023年5月3日 · The air diffusion performance index (ADPI) has been developed as an indicator to quantify the comfort level in heating or cooling for a given space conditioned by a mixed air system. ADPI employs the effective draft temperature collected at an array of points taken within the occupied zone to predict comfort.