1. Different meanings:
Tidal power generation can be divided into three forms: 1. Single and unidirectional bank; 2. Double and one-way banking; and bidirectional. At high tide or low tide, seawater flows in and out of the reservoir, driving the turbine generator to produce electricity.
The energy of a wave is proportional to the square of the height of the wave, the period of motion of the wave, and the width of the surface facing the wave. Wave energy is the most unstable energy source among ocean energy sources.
2. Different effects:
The development of new energy sources such as tidal energy can indirectly slow down the increase in CO2 content in the atmosphere. Tides are a global phenomenon of periodic changes in sea level due to the influence of the two gravitational sources of the Moon and the Sun.
Wave energy is generated by the wind which transfers energy to the ocean. It is essentially formed by absorbing wind energy. The rate of energy transfer is related to wind speed and the distance at which wind and water interact (i.e. wind area). When the mass of water moves relative to sea level, the waves have potential energy and the movement of water particles gives the waves kinetic energy.
Application:
Ocean tides contain enormous amounts of energy. During the rising tide, the rising sea water has large kinetic energy, and as the sea water level rises, the huge kinetic energy of the sea water is converted into potential energy; During the ebb process, the sea water moves away and the water level gradually decreases. , potential energy is converted into kinetic energy. The maximum value of the ampThe tidal range in the world is about 13-15 m, but generally speaking, an average tidal range greater than 3 m has practical application value.
Reference for the above content: Baidu Encyclopedia - Tidal Energy
1. Different functions
Ventilation ducts can promote air circulation and reduce harmful gas content pipeline equipment. The exhaust duct collects harmful objects from the exhaust fan or air suction port and sends them to the purification equipment through the duct. After reaching the standard, they are discharged or reused.
2. Different uses
Ventilation ducts can be used in industry, construction projects and urban infrastructure. The exhaust pipe is mainly used for exhaust.
3. Different materials
Ventilation ducts are divideds made of steel sheet air ducts, galvanized sheet air ducts, plastic ventilation ducts, etc. The exhaust duct requires only a scrubber and a fan, and the ducts are usually connected as a whole to form a partial exhaust system.
2. What precautions should be taken when installing smoke evacuation ducts
1. The specifications, installation area and elevation of the smoke exhaust duct must meet the design requirements. Installation of air ducts on site should not be less than the effective cross section of the interface.
2. The connection of the air duct interface must be in a tight and solid state, and the thickness of the joint must not be less than 3mm and cannot protrude into the pipe or outside the flange . It is recommended that the air duct flange gasket be made of non-combustible materials and that theThe thin steel plate flange air duct be connected with bolts.
3. The installation of air duct supports and supports shall be carried out in accordance with the relevant provisions of the national quality acceptance specifications.
4. The air duct connection port should be inserted in the direction of air flow and use sealing measures.
5. The connection between the air duct and the fan must be a flange connection or a flexible short pipe connection using non-combustible materials. For example, when used for smoke prevention and evacuation, it is not recommended to use flexible fittings.