As the tail end equipment of household central air-conditioning system software, the air disc is widely used in many public places. Its main features are as follows: creating modules, easy to adjust; the air disc is small, flexible in layout, convenient in installation, and occupies less building space It is beneficial to cooperate with each other in the construction of interior decoration projects. According to the different requirements of the owners of the community, the design drawings should be integrated into the specific engineering projects, and the following should be considered: 1. The strength check of the cooling capacity Galvanized welded air ducts are generally selected according to the measured cooling load, but It should be noted that different methods of supply and demand balance of the fresh air system will cause the load cooling capacity of the wind disk to be different. When the fresh air system is immediately sent to the house according to the wall, without the solution of damp heat, the cooling capacity of the air plate u003d the cooling load of the fresh air system in the room; when a separate household fresh air system is set up, the cooling capacity of the air plate u003d the cooling capacity of the room cold load. At this stage, the products sold in the market are generally all called the cooling capacity of the air conditioner, and the cooling capacity in the specific operation should be the cooling capacity × the average operating time per unit time, that is, changing the operating time or the exhaust air volume will harm the generator set. of type cooling capacity. Therefore, it is not in the name of the higher the cooling capacity, the better. If the generator set is only used according to the amount of the arrogant, the cooling capacity will be too large, resulting in a low operating rate, a decrease in air exchange, and an increase in the direction of the indoor temperature gradient, which will continue to increase. System software volume and investment in machinery and equipment projects increase the energy consumption of central air conditioning and reduce the actual effect of central air conditioning. Therefore, the cooling capacity is only one of the necessary conditions for the selection of machinery and equipment, and other elements should also be included. 2. Intensity check of exhaust air volume The key point of all-welded air duct is to check the air exchange according to the strength specified by the quality of the house. The smaller the temperature difference of the exhaust air and the more air changes, the better the quality of the gas and the more comfortable it is. Why some central air-conditioned rooms experience heavy odor and stuffiness, that is, the strength check of the exhaust air volume has not been solved. Because the air volume of the air disk is measured under the working conditions of blocked water and zero trade pressure difference between the gas import and export, there are some factors that are out of reality. According to the calculation of work experience, these supplementary exhaust air volumes should account for 20-30% of the nominal exhaust air volume. 3. Air supply method The air supply method produces natural ventilation in plain words. Whether the effectiveness of the clamp welded air duct will immediately endanger the thermal stress of the central air-conditioning room, the symmetry and reliability of the velocity field, that is, the actual effect of the central air-conditioning. pros and cons. Effective natural ventilation stipulates a certain exhaust rate to prevent cyclone short-circuit failures to ensure a certain water jet length. The wind power depends on the negative pressure outside the equipment, the air supply and exhaust volume, the positive pressure air outlet and other factors. If the negative pressure outside the equipment is too low, the exhaust air volume will be reduced, the effective range will be reduced, and the room will be unevenly heated and cooled. There is a big difference between the natural ventilation of the design plan and the specific operation situation in the trend chart, so it should be based on the specific project building layout. , the structure of the house, the net width, aspect ratio and other conditions, select the medium exhaust volume and the wind index value to relatively select the model and specification of the wind disk. At this stage, for the wind panels on the market, the negative pressure values u200bu200boutside the equipment of each manufacturer are not uniformly calibrated. The filter device has a large friction resistance value of the inlet and return design grids, so when ordering, it is clear that the external negative pressure value of the equipment is selected as 30Pa. The upper and lower friction resistance values u200bu200bensure an excellent uniform field in the specific operation, and achieve the estimated actual effect of air withering. 4. Other elements a. The noise index value is controlled below 40dB. For the slightly louder wind disk, the noise reduction solution equipment should be modified, and the friction resistance value should not exceed 10Pa. b. Installation and construction site quality Pay attention to thermal insulation quality, condensate discharge, slope flow, pipe joints, and system software cleaning. c. The setting method of the water system software is the horizontal system software or the vertical system software. Some construction sites use the vertical system software, which can well ensure the discharge of condensed water and ensure the height of the house.
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