Undertake Xiangtan hotel hoods exhaust pipe system design manufacture installation

Long Xiangjiang Anhui cold kitchen equipment factory, which is a modern production of professional kitchen equipment cold plant. Production of stainless steel kitchen equipment and stainless steel products, specializing in the design, manufacture, installation of various types of hotels, restaurants, schools, staff canteen units, exhaust hood, exhaust pipes, ventilation pipes and other supermarkets, factory strong technical force, in the same industry We lead in the introduction of scientific management, the entire production process from product design, production, processing, production and service coordination to achieve a more perfect unity. "Honesty, excellent quality, reasonable price and good service." Our long-term customer is responsible, the contract, keeping promises, sincere welcome customers, calls, the communication business negotiations, we will provide you with the best and most attentive service. Kitchen exhaust air volume calculation and factories, laboratories remove harmful gases as harmful gases should produce a total exclusion of all clean technology belong to professional smoke. Exhaust air flow shall be calculated to capture the heat generated by all the fumes as a benchmark, not only equivalent to a simple ventilation. According to the following principles of fluid mechanics, process flow intake and exhaust fume hoods to be explained, which helps analyze comparative calculation method, also contribute to other types of smoke extract were calculated and analyzed. Spread the pressure, and the propagation of sound is the same, the air pressure is also the speed of sound to spread. The gas is inhaled negative pressure zone, the formation of air to form a spherical surface isobaric negative pressure area as the center, also known as constant velocity surface. In this isobaric surface, the pressure is equal to the size of the pressure caused by the flow of air velocity is the same, and so on and spherical pressure flow line perpendicular to the surface everywhere. In the isobaric surface with different radii, spherical different areas, different flow rates, flow through the spherical area equal to that is the same with the suction outlet flow. It is the negative pressure zone formed at the center of a spherical isobaric surface, and inversely proportional to the distance to the center of the square velocity. A completely unobstructed suction outlet, the pressure is spread throughout a spherical space, diffusion angle of 4ir. Because of the flow field of spherical space, so the flow rate of decay much faster. When the diameter of the suction outlet away from the suction outlet "= 0.8 Yu, the flow rate is reduced to the suction outlet velocity u. 10%, which is equal to 0.1Ua. Therefore, the size of the installed fume hood as close as possible to consider the stove, there must be a reasonable size of the canopy, the negative pressure in the fume hood, will form an isobaric surface. Bucket hanging fume hood formed isobaric surfaces. Since the inner fume hood exhaust outlet vacuum forming isobaric surface to exhaust outlet centered approximately spherical, bucket mouth exhaust hood down, control pressure propagation direction, spherical isobaric surface is incomplete. Fume hood cover isobaric rectangular opening negative formed to be approximated as a rectangular cover mouth centerline cylindrical surface of the fume hood isobaric isobaric synthesis hemispherical ends isobaric surface. Because of the ability to spread the pressure has diffraction, air side and exhaust hood portion of the exhaust hood against the wall will not be mixed with the flue gas, into the exhaust hood. Therefore, to be considered in the calculation of the area surrounding the exhaust hood, for example, surrounded by a wall or hoods open, wall reduces the isobaric surface area, it can reduce the air mixed people, improve the efficiency of smoke. Other forms of fume hood exhaust airflow analysis principle is the same, but in the calculation method to combine different forms of the fume hood concrete structural shapes, using different formulas