Company News-Jiangsu Yunuo Cooling Technology Co., Ltd.

2022.06.23

The closed cooling tower manufacturer talks about why the closed cooling tower leaks? What is the reason?

Jiangsu Yunuo Cooling Technology introduces closed cooling tower manufacturers to talk about why closed cooling towers leak water? What is the reason? The working principle of the closed cooling tower is mainly based on the evaporative cooling technology, and its design comes from the evaporative cooler used in industry. The high temperature water of the condenser, absorber or process equipment is sent to the cooling coil of the cooling tower through the pressure generated by the water pump or other pressure equipment, and the circulating water enters the cooling tower. The closed cooling tower manufacturer exchanges heat through the movement in the cooling tower and through contact with the air fluid, and the return water after entering the cooling tower passes through the pressure swirl nozzle equipment installed on the top of the tower and the upper part of the air duct. A high-speed straight and downward movement of spray droplets is formed, completing the mission of adding the surface area of the water droplets. The water film and the air form a full steam of moist heat. The fans emit heat to the atmosphere, and some of the water droplets are recovered by the sump to reduce the loss of spray water. In the process of water droplets, the water droplets will also encounter the rising airflow, thereby delaying the falling rate of the water particles and prolonging the heat exchange time. The heat of the fluid is first transferred to the inner wall of the copper tube, then from the inner wall to the outer wall of the copper tube, and then to the water spray film. When the water spray is reduced to a certain amount, the float valve actively makes up for the water, so that the cycle continues. In addition, because the cooling tower removes the packing and becomes an empty tower, the resistance in the tower is reduced. Under the action of the fan, the wind speed and air volume are increased, and the air-water ratio is added to achieve the intention of improving the cooling effect. Fluid cooling tower machines should avoid acid gas, explosive dust, severe smoke and excess water vapor; be placed around the building and at a satisfactory distance (0.7m, depending on the model) from the air inlet; on the wall of the well When placing, attention should be paid to the heat release caused by the return of hot and humid air, and ventilation equipment can be considered in special circumstances; First of all, there is water leakage at the connection between the tower body and the water basin. When assembling the closed cooling tower, glue is used between the galvanized plates to be compacted and sealed. Long-term operation, under the impact of spray water, deformation of the basin body, drop of sealant, etc., will cause water leakage at the joint. Because the spray water will be collected in the bottom pool, the leaking water needs to be continuously compensated for the spray water. Secondly, the connection pipeline leaks. When the pipe is laid, some flanges and elbows will be connected. When the connection is made, a sealing ring will be added between the two connecting joints, and the pipeline leaks. Most of the reasons are the pipe The road connection is not dense, the sealing ring is damaged or the position is displaced, which will cause the sealing to be weak and cause water leakage. In addition, the water collecting tank is corroded and leaked. Because of long-term use, it may also be the environment and water quality caused by the high pH of the water used to corrode the material of the water collecting tank, and the thickness of the box body is not uniform. Damaged water leaks will occur. Water leakage will increase water consumption, increase environmental pollution, and then accelerate the corrosion of other components, a vicious circle. The above is the relevant content introduced by Jiangsu Yunuo Cooling Technology.

2022.06.23

How to fill cooling tower equipment.

Jiangsu Yunuo Cooling Technology will introduce to you how to fill the cooling tower equipment. When building a counter-flow cooling tower, the angle between the top of the packing and the airflow section should be controlled within 90 degrees, a flat top cover should be selected, a diversion ring should be set under it, and the angle between the water collector and the airflow section should be controlled between 90-120 degrees. For the shortened tower top, the top angle of the cover plate of the shortened section should be controlled between 90-110 degrees. The inclination angle of the water filler is controlled between 5-8 degrees. First, the distance between the top of the cooling tower packing and the lower end of the fan in the standard size of the cross-flow cooling tower should be 1.2 times the diameter of the fan. In the process of use, in order to avoid the short circuit between the air and the bottom of the filler to the water surface, backup circulation measures should be set up. The third is how to choose the cooling tower packing. The selection of the cooling tower packing type should consider the requirements of the separation process. Generally, the following aspects should be considered, and the mass transfer power should be high. Generally speaking, the mass transfer power of structured packing is higher than that of bulk packing. The flux should be large. On the premise of ensuring high mass transfer power, packings with high flooding point gas velocity or gas phase kinetic energy factor should be selected. The pressure drop of the packing layer is low. The packing has strong anti-fouling and blocking function, and is convenient for disassembly, assembly and maintenance. The choice of filler, the temperature drop is large, the airflow resistance is small, the price is cheap, and the hydrophilicity is good. The filler is the core heat exchange part of the cooling tower, which is directly related to the cooling efficiency. The quality and design of the filler directly affect the cooling capacity of the cooling tower to a large extent. According to authoritative data, in the heat exchange ratio of the entire cooling tower, the filler occupies 60% to 70%. The filler is generally made of uneven PVC or PP material, which has better hydrophilic properties and can ensure that the cooling water forms a water film and water droplets on the filler instead of water flow. area, extending the exchange time of air and water, ensuring cooling effect. As the main core of circulating water heat dissipation in industrial production, cooling towers affect the cost and efficiency of industrial production in my country. Improper use of cooling towers in industrial production will result in untimely heat dissipation of equipment, production blockage, and danger of excessively high water temperature. The cooling tower packing is the primary factor to promote the water and heat cycle, therefore, it is necessary to choose high-quality cooling tower packing. The second is the standard angle of the counter-flow cooling tower. When building the counter-flow cooling tower, the top of the packing and the airflow section should be controlled within 90 degrees. A flat top cover is used, and a diversion ring is set below. The water collector should be controlled at an angle with the airflow section. Between 90-120 degrees. For the shortened tower top, the top angle of the cover plate of the shortened section should be controlled between 90-110 degrees. The inclination angle of the water filler is controlled between 5-8 degrees. In the process of use, in order to avoid the short circuit between the air and the bottom of the filler to the water surface, backup circulation measures should be set up. The above is the relevant content introduced by Jiangsu Yunuo Cooling Technology.

2022.06.23

The closed-circuit cooling tower manufacturer talks about the ways we want to assemble the closed-circuit cooling tower.

2022.06.23

Why a closed cooling tower needs to add a circulating water tank.

Jiangsu Yunuo Cooling Technology will introduce to you why the closed cooling tower needs to add a circulating water tank. The installation site of the closed cooling tower is generally divided into indoor and outdoor. If the equipment is placed indoors, it must be ensured that there are ventilation windows around it. If there is no ventilation, some ventilation equipment, such as air guides, must be added. ventilation. Under normal circumstances, it is recommended that the equipment be placed outdoors, in a space of at least 4 meters in length and width around the cooling tower, and no other components or equipment should be placed, otherwise it is not conducive to the normal operation of the cooling tower. Why should a closed cooling tower add a circulating water tank? Because of its characteristics of closed circulation of liquid in steps, and then transporting abundant energy, in our coil heat exchanger, the heat exchanger of liquid, flowing gas and self-spraying water is carried out to carry out closed circulation. Recirculating stainless steel sinks cut energy consumption. The closed cooling tower has a series of characteristics such as good thermal insulation properties, high process quality, anti-fouling, and stable cooling characteristics of machinery and equipment. The structure of this equipment is mainly composed of heat exchanger fan coil, shell and support, as well as exhaust fan and motor, plus water distribution active spray system, water filter, centrifugal water pump and pipeline, etc. Many components, but be aware that, in most cases, a water tank is required. For the closed cooling tower water tank, most of the commonly used raw materials are stainless steel plates or glass fiber reinforced plastic anti-corrosion raw materials, which will have excellent compressive strength and corrosion resistance. Its shell is square, which is also more beautiful in terms of shape design. There are also general water tanks ranging from 0.5 cubic meters to 20 cubic meters. As far as the bottom of the stainless steel water tank is concerned, we generally continue to equip centrifugal pumps and tap water pipes. Wait. Asbestos plate or asbestos cloth is generally used for heat preservation of the heating plate of the closed cooling tower, but the asbestos cloth is not easy to be placed flat, and it also has a certain influence on the guarantee of the parallelism of the pressure plate. There are many types of asbestos boards, and asbestos board should be used for the heat preservation of the heating board. The common specification is 1000x1000, 3-5mm thick, the board body is relatively regular, the parallelism is good, the compressibility is relatively uniform, and there is no peculiar smell at high temperature. There are many heat preservation measures for closed cooling towers. Under the condition of good heat preservation, closed cooling towers can work in a relatively stable environment and can better perform their functions. When choosing asbestos cloth or glass cloth, it must be Choose a regular manufacturer. Asbestos cloth or glass or cloth can also be used to wrap aluminum hydroxide insulation cotton for insulation. Now there is a kind of insulation coating on the market which is an ideal material for insulation. It is made of medium and long fibers, slurry and a kind of insulation foam material It is easy to be altered, and no scorch is found when used at 150 °C. At the same time, the material is very light, with strong plasticity, and it is easy to form a more beautiful appearance. The above is the relevant content introduced by Jiangsu Yunuo Cooling Technology.

2022.06.23

How often do we need to hand in the circulating water to the closed cooling tower?

2022.06.23

How do we use the fluid cooling tower correctly in the transition season

Jiangsu Yunuo Cooling Technology will introduce to you how to use the closed cooling tower correctly in the transition season. The closed cooling tower is a kind of equipment that places the tubular heat exchanger in the tower, and the heat exchange between the circulating air, the spray water and the circulating cooling water achieves the cooling effect. In recent years, closed cooling towers have been more widely used in power electronics, machining, air conditioning systems and other industries. The planning of many closed-circuit cooling tower equipment and the planning parameters and thermal function curves provided to users are based on summer climatic conditions. The temperature can reach below 15℃. Using the relevant sample technical parameters of the cooling tower during summer operation will cause the cooling tower to fail to achieve the expected cooling effect during operation or consume too much energy, which is not conducive to energy saving. And the same is a closed cooling tower, its spray overflow is very small, because after all, the spraying work is carried out in the tower, it can be controlled at a few thousandths, we calculate it according to 5 thousandths, the same It also works for 10 hours and operates 280 days a year. It is basically a closed cooling tower of 4500 tons per hour to achieve the same cooling fluctuation. Then the calculation result: 4500*0.5%*10*280=63000 tons, no It is difficult to see that the waste of spray water resources due to different planning structures has increased by more than 200,000 tons of fear. After consulting relevant literature, it can be seen that in addition to the operating parameters of the cooling tower itself, when the outdoor air wet bulb temperature, dry bulb temperature, relative humidity and other parameters change, the thermal function of the cooling tower itself will also change, which violates its planned operating conditions. . In the transition season in March and November, the cooling tower function violates the planned working conditions by about 5.5 to 70%. In April, May, and October, the cooling tower function violates the planning conditions by about 6 to 70%. The cooling capacity of the cooling tower can be increased by increasing the inlet air speed of the cooling tower or increasing the cooling water inlet volume, but the corresponding adverse effects of reducing the energy consumption coefficient and increasing the outlet temperature will be brought about. In the transitional season in November, the cooling tower can adjust the cooling tower water inlet and inlet wind speed according to the different primary evaluation conditions, and the cooling tower can meet the cooling requirements at this moment. In the transitional season (April, May, and October), due to the relatively high outdoor temperature, the performance cost of the cooling tower through variable wind speed adjustment is very high, and the economics of operating the cooling tower under such climatic conditions is relatively poor. When the cooling capacity required in the transition season is not large, it is recommended to use variable water volume conditioning first. The energy consumption coefficient corresponding to the variable water volume is about 5% higher than the energy consumption coefficient under variable wind speed. When the outdoor wet bulb temperature is at a relatively low level in the transition season, such as when the wet bulb temperature is 6°C or 8°C, it is advisable to carry out variable air volume adjustment, and while improving the relative cooling capacity of the cooling tower, it is satisfied that the relative energy consumption coefficient is not low at the expected level. The above is the relevant content introduced by Jiangsu Yunuo Cooling Technology.

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The Company is specialized in R&D, production and sales of a variety of water cooling products, such as closed cooling tower, crossflow tower, countercurrent tower, refrigerator, evaporative condenser, etc. In addition, the Company provides consulting of other relevant spare and accessory parts as well as technologies.

CONTACT：Manager Yang

TEL：+86-0510-83399019

TEL：+86-18861546799

ADD： No. 69-2, Beihui Road, Huishan District, Wuxi City

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