Spray cooling equipment

For outdoor air, the efficiency of spray cooling is very high. In theory, each gram of water can reduce the air temperature per cubic meter by about 2 degrees. The energy needed for spray cooling is the energy needed to overcome the increase of the surface tension of water. When the water of 1 cubic meters becomes a 10 micron cube, the energy required for the surface tension is about 43200 joules, while the latent heat of evaporation is as high as 2 billion 200 million joules. The energy efficiency ratio is as high as 50,000, while the theoretical maximum energy efficiency ratio of air conditioning is about 60 when the temperature is reduced by 5 at 30.

The effect of spray cooling is greatly affected by air humidity. The higher the relative humidity is, the worse the effect is. Therefore, the effect of spray cooling on the indoor environment is poor, especially for the poor ventilation room, the effect of spray cooling is even more limited.

Now that urban heat island effect becomes stronger, it is not the best way to use greening to cool down. In fact, the greening and cooling down is because more than 99% of the energy is evaporated into evaporated water by the evaporation of water, and the cooling efficiency of spray cooling is much higher. Urban heat island effect is mainly affected by the following factors: evaporation reduction, urban underlying surface reflection reduction, energy input. The intensity effects are as follows: evaporation decreases by 0.05g/s, heat input 120.9w; urban underlying surface reflectance decreases by 10%, heat input 30w/; artificial energy input 10w/, total heat input increases by 160.9w/. Due to the influence of air convection, the actual heat input is about 20w/ and the calculated temperature rises by about 3.5 (?) C, which is consistent with the actual situation. When the air circulation slows down in summer, the heat input will increase sharply. Because of the low adaptability of urban evaporation system, the urban temperature will rise sharply. At the same time, the accelerated operation of air conditioning and thermal power plants will cause a vicious circle, which will aggravate the urban atmospheric temperature rise. From these data, it can be concluded that the best way to solve the urban air pollution is to increase the evaporation. The spray system is an efficient and economical way to restrict the installation of the city. When the evaporation is 0.05g/s_ (11 hours during the day is equivalent to 2 mm rainfall), the average temperature of the atmosphere reaches 7 C.

Spray cooling principle

So far, in most cases, the outdoor temperature is uncontrollable, and many times people have to take a few hours or more in hot, boring places, such as open-air squares, sports venues, amusement parks and so on. In these outdoor environments where air conditioning is not available, people have to endure the ubiquitous heat.

Now with the spray cooling system, we can control the temperature of the environment locally. The spray cooling system emits water particulates in the air, and absorbs a lot of heat in the surrounding environment in the process of gasification, thereby reducing the temperature of the surrounding environment. It is an effective way to prevent heat and cool down. In midsummer, when the temperature of the city is above 35 C, even with an umbrella and sunglasses, the direct reflection from the sun and the reflection from the ground still make people feel hot. Under the action of the spray cooling system, the air temperature can drop to 25 degrees centigrade, and it can cool down 14 degrees in extreme environment to reach the best temperature of human body.

Characteristics of spray cooling

Fine fog: the high pressure mist spray can produce 5 billion droplets per second, and the droplet diameter is only 3~10um, especially in the mountains. It evaporates quickly in the air and forms steam. The effect of humidification and cooling is excellent.

Energy saving: Atomizing 1 kg of water only consumes 6W electric energy, which is one percent of the traditional electric heating humidifier and one tenth of the centrifugal or gas-water mixed humidifier.

Reliable: High-pressure mist system mainframe color imported industrial plunger pump, 24 hours of continuous operation, nozzle and water mist distributor without power vulnerable parts, in high dust environment is not damaged.

Hygiene: Water in high-pressure mist system is sealed and non-recycled, and will not cause bacterial reproduction.

Spray volume: large spray volume and free combination. The output flow of pumping station of high pressure micro-mist system is from 100kg/h to 1600kg/h, which can be adjusted steplessly, mist head can be arranged arbitrarily within the flow range, and humidification accuracy can be adjusted by any combination.

Widely used: In addition to humidification, it is also widely used in working landscaping, dust suppression, besides flavor, greenhouse, seedling raising, livestock breeding, spraying, industrial equipment cooling and many other industrial fields....