Air cooled heat exchanger

The air cooling heat exchanger is to make the air flow outside the high fin tube to cool or condense the fluid flowing in the tube.

The advantage of the air-cooled heat exchanger ****** is that there is no water loss, especially for cooling in areas where water resources are scarce. Such as the geographical characteristics of the Gobi desert, the highest ambient temperature of 40 ° C, the lowest 0 ° C, the relative humidity of 20 ~ 80%, the annual rainfall is very little, water resources are extremely precious.

The hot water of the air-cooled heat exchanger is not in direct contact with the air. The cooling medium is air, and the cooling of hot water is realized in the air cooler, so its heat transfer is only a simple conduction heat dissipation, which is different from the heat transfer principle of the evaporative cooler. Evaporative coolers are commonly known as wet air cooling, and air-cooled heat exchangers are commonly known as dry air cooling.

The advantage of the air cooling process is that there is no need for cooling water, which is especially suitable for dry areas. The disadvantage is that the one-time investment is large, the operating cost is high, the medium can not be cooled to below 48 ° C in summer, and the antifreeze effect is poor.

Determine the cooling process, using water cooling or air cooling, when cooling more than 100℃ process fluid and cooling temperature above 50℃ when the air cooled heat exchanger is advantageous, cooling process fluid below 80℃ and cooling temperature above the air wet bulb temperature of 5 ~ 8℃ using evaporative cooler is advantageous.