Solution to condensation on air outlet of air conditioner

Solution to condensation on air outlet of air conditioner

Part 1: Causes of condensation at the air outlet

　　 1. Theoretical analysis of condensation:

　　 First of all, we must first understand the cause of condensation and why it occurs.

　　 The temperature at which water vapor in the air condenses into water (condensation) under a certain atmospheric pressure and the moisture content does not change. When d does not change, the air temperature drops and changes from an unsaturated state to a saturated state. At this time, the relative humidity of the air j = 100%. In air conditioning technology, the air is cooled to the dew point temperature to achieve the purpose of dehumidifying and drying air.

　　 Dew point (or frost point) temperature: refers to the temperature at which the air is cooled to saturation when the water vapor content and air pressure do not change. To put it vividly, the temperature at which the water vapor in the air turns into dew is called the dew point temperature. Dew point temperature is a temperature value, but why use it to represent humidity? This is because when the water vapor in the air has reached saturation, the temperature is the same as the dew point temperature; when the water vapor is not saturated, the temperature must be higher than the dew point temperature. Therefore, the difference between the dew point and the temperature can indicate the degree of saturation of the water vapor in the air.

We can pass the current condensation phenomenon in our daily life mainly due to the large difference between the surface temperature of the object and the ambient temperature (the surface of the object must be a low temperature body), so that too much water vapor will precipitate from the space and condense on the surface of the object Drops of water. The most obvious example is in summer, due to the temperature difference, the water vapor in the air will immediately form dew on the outer packaging of the ice drink. We only need to isolate the surface of the object from the air, and the water vapor in the air will naturally not form condensation on the surface of the object.

　　 The dew point is not affected by temperature, but is affected by pressure.

　　 2. Analysis of the causes of condensation at the air supply outlet:

　　1. The air humidity in the air-conditioned area is relatively high;

　　2. Due to the unreasonable setting of the new exhaust system in the air-conditioning area, excessive negative pressure is generated, which causes unorganized outdoor air to enter the room, thereby increasing the humidity and dew point of the air;

　　3. The air conditioner itself uses a large temperature difference to supply air, and the air supply and cooling capacity of the machine itself are not equipped, resulting in too much cooling and too small air volume;

　　4. The air outlet is made of aluminum material. Due to the good thermal conductivity, the surface temperature of the air outlet material is too low and dew condensation;

　　Part 2: Solutions to the problem of condensation

　　 1. Minimize the number of door openings and check whether the room is not sealed enough with the outside world;

　　 2. Increase the air supply, try to adjust the wind speed to the highest level or open the regulating valve as much as possible;

　　3. If it is a side air outlet, adjust the horizontal louvers to blow up as much as possible to prevent the louvers from flowing out after condensation;

　　4. If possible, a thin PE insulation board can be attached to the edge of the tuyere.

　　 The above are some preliminary personal suggestions!

　　The root cause of condensation is that the temperature of the air outlet is lower than the dew point temperature of the indoor air.

　　The solution is to increase the air volume and reduce the supply air temperature difference.

　　1, adjust the air (set) temperature;

　　2, adjust (increase) the air supply volume;

　　3. A thin PE insulation board can be pasted on the edge of the tuyere.