Analysis on dynamic characteristics of natural wind near earth surface in forest environment.;

The results show that the power spectrum exponent(β) of the natural wind is always between(1.

The theory of hybrid application of renewable energy technology is introduced in this paper,where three ways of hybrid application are drastically focused on: the hybrid application of solar energy and natural wind,earth energy an.

Applications of natural ventilation technology;

Analysis of affecting factors on natural ventilation in aluminum electrolytic plants;

05CFD design method for the natural ventilation of aluminum reduction pot room (conventional architecture structure);

Application and designing of actuators for window usingin building nature ventilation system;

Wind catchers are innovative technique for the application of nature ventilation in buildings in areas with temperate climates such as the United Kingdom.

So, studying on nature ventilation and energy efficiency in residential building become the direction of studying on building energy efficiency with climate and using natural resources.

Study on influence of mine natural ventilation pressure to stability of mine ventilation network;

Natural Ventilation pressure of underground working is counted with changeful process of gas,it is accurate over traditional methods,based on shaft of entry and shaft mouth be same height,new method of according with the actual situation is raised to natual ventilation pressure problem measuring natural ventilation pressure is raised according to network theroy.

At the same time,four ventilation plans are brought forward according practical situations of this project and simulated considering such two situations as air natural distribution and control air distribution,then the effects of natural ventilation pressure on operating ventilation of tunnel are studied.

Based on data measured in mine,studied the relation between natural ventilating pressure and average atmospheric temperature difference in the path of inlet air flow and return air flow,founded the formula on how to calculate natural ventilating pressure.

It is necessory to take into account the effect of natural ventilating pressure whether for the resolution of ventilation network or the stability analy-sis of ventilation svstem.