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Function introduction of evaporative air cooler

The evaporative air cooler is a new generation of high-tech and high-quality heat exchange equipment, which is based on the operation principle of thermodynamics and heat transfer.

Reasonable piping and planning parameter optimization planning make the flow resistance control within the planning of process technical requirements; the negative pressure in the coil box is formed by using the axial flow fan to induce and extract air, increase the transpiration of water and then strengthen the heat exchange; the special nozzle makes the cooling water touch the surface of the coil in a large limit; the arrangement of cooling fin parts avoids the water scaling in high temperature Phenomenon, then the unit area heat load of the transpiration cooler is significantly advanced, and the service life of the equipment is prolonged; the flexible loading and unloading window is selected to avoid the phenomenon that the air inlet is blocked and the heat exchange effect is reduced after long-term operation of similar products, and the operation environment is more habituated; the high-efficiency dehydration has the effect of avoiding corrosion and biochemical corrosion, and together The multi surface structure can effectively collect the moisture in the wet air and reduce the free and easy rate of water to a low level.

Precooling technology: the high temperature and high pressure gas is precooled before condensation and cooling, and the wet air discharged from the coil of transpiration cooler is discharged into the atmosphere for cooling with large air volume and large temperature difference, so that the high temperature and high pressure gas can be cooled. The technology can achieve three purposes: ① the condensation cooling effect of transpiration cooler is advanced, and the heat transfer effect is proved to be more than 10% by practice; ② the scaling phenomenon on the outer surface of coil is slowed down, and the service life of equipment is advanced; ③ the dynamic force is saved by using natural air cooling.

Slow scaling technology: after precooling, the temperature of the gas entering the condenser cooling coil is relatively low, which avoids the phenomenon that water is easy to scale at high temperature, slows down the scaling speed on the outer surface of the coil; increases the water distribution on the surface of heat transfer, which can prevent the scaling accumulation of water during transpiration.

Dry operation technology in winter - because of the use of cooling fin parts, the function of the equipment is ensured when the water is stopped and dry operation is carried out in winter. The natural strong cold air energy in the natural world is used for heat exchange, which truly reaches the role of water saving and energy saving.

Variable air volume control technology: the traditional control method of air volume of cooler is mainly through regulating the blade angle of fan or selecting two speed motor and regulating the opening degree of 100 page window. When the air volume is reduced, only the rest of the air volume can be released, which constitutes a waste of power. Through the new frequency control technology to control the fan air volume, so that the cooler energy-saving effect is significant. During the process planning, the temperature sensor (transformer) can be installed at the outlet of the cooler, which can convert the temperature change into the analog signal of 4-20mA to be transmitted to the DCS or the control part of the frequency conversion controller. The frequency conversion controller will automatically schedule the speed of the fan, and then end the energy-saving requirements of the variable air volume of the fan.

Transpiration air cooling has the advantages of compact structure, safety and reliability, low operating power, low operating cost, water and power saving, low noise, no pollution to the environment, strong anti-corrosion ability, long service life, convenient and quick equipment, simple operation and protection. It is now one of the energy-saving cooling and heat exchange equipment.

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