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a Selection of venues.
The cooling tower should be installed in a well-ventilated place, and the air inlet and outlet of the cooling tower should be kept at a certain distance from the building to ensure that fresh air enters the tower and avoid the reflux of hot and humid air discharged from the cooling tower and affect its thermal performance; The minimum allowable distance between the air inlet surface of the cooling tower and the building is related to the tower type and the number of units assembled, for more information, please contact your local distributor or Marley Marketing Department.
Cooling towers should be installed in places where hot and humid air is generated and dust is flying as far as possible;
Cooling towers should be installed in open areas to avoid sound reflection and noise amplification;
b Installation essentials and pipeline configuration:
The cooling tower should be placed horizontally and cannot be tilted, so as not to affect the cooling effect due to uneven water distribution;
Gas welding, electric welding, etc. are not allowed to be used in the top tower of FRP tower to avoid fire;
The suction inlet of the circulating water pump should be placed below the water level of the water collection tray of the cooling tower; The cooling tower outlet pipe must not be higher than the highest water level of the water collection tray (the foundation height of the outlet pipe should be considered when looking at the foundation);
The inlet branch pipe needs to be equipped with a valve to facilitate the adjustment of the water volume into the tower.
Pipe racks should be set up, and the cooling tower should not be made to bear the weight of the pipes directly; The pipe support must be made in accordance with the relevant specifications and fixed firmly, otherwise vibration will occur. The casing must be made of the through-wall pipe to prevent vibration on the wall.
When multiple cooling towers are used together, it is recommended to install a connecting pipe to balance the water level of each tower; And the diameter of the pipe is at least one level larger than that of the outlet pipe.
The cooling tower fan has been balanced tested, and the fan blade and hub number should be consistent when installing.
After the motor is wired, the wiring hole should be sealed to avoid water ingress. If the wiring is not connected for a long time, the motor needs to be sealed with a plastic bag to prevent water from entering the motor.
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Hello Qin Jize! A circulating water cooling tower is a type of heat exchanger that uses the cooling effect of circulating water to help cool the heat. The working principle of the circulating water cooling tower is:
1.The circulating water enters from the bottom of the cooling tower, flows inside the cooling tower, and the heat is transferred from the circulating water to the internal structure of the cooling tower, thereby extracting the heat from the circulating water. 2.
After the heat inside the cooling tower is pumped out, the circulating water flows out from the top of the cooling tower and returns to the bottom of the cooling tower at a lower temperature. 3.After the internal heat of the cooling tower is extracted, the outside air of the cooling tower passes through the internal structure of the cooling tower, thus extracting the heat from the internal structure of the cooling tower.
4.After the internal heat of the cooling tower is extracted, the air outside the cooling tower is returned to the external empty lead flush of the cooling tower at a lower temperature to complete the cooling process.
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Look at the quality of the circulating water that needs to be cooled, such as the pH value of the water, generally about 6-8, the turbidity of the water, the turbidity of the circulating water in the general industry is 50mg l, and the sewage tower should be considered if the turbidity is 50mg l.
Look at the temperature of the circulating water outlet, the general water temperature is 55 degrees to choose the standard type, 55 degrees, 80 degrees to choose the high temperature type.
Look at the circulating water volume, generally 1000 cubic meters, choose ordinary air-conditioning towers, 1000 cubic meters, choose industrial towers.
Look at the precision of the machinery and equipment, if the machine requires the circulating water quality to be clean, it is necessary to use a closed cooling tower, if the water quality requirements are not high, you can use an ordinary open cooling tower, that is, the commonly used FRP cooling tower.
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Now select a set of circulating water for comparison before and after the transformation, the data is shown in Table 1. Comparison table before and after the transformation of the cooling tower from Table 1: the temperature difference between the return water of the circulating water and the temperature of the supply water increases after the transformation
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Cooling structures in Tuanling at the cooling water cooling place generally use cooling pools or cooling towers. Its working process is as follows: the circulating water is transported to the water supply main pipe by the water pump, and then enters the production equipment that needs to be cooled respectively, flows through the part that needs to be cooled, and then collects the pure simplicity to the return water main pipe, and sprays down through the water distribution pipe above the cooling water tower.
When the fan at the top of the cooling tower is running, the return water flows back into the storage tank after sufficient heat exchange with the air flow in the packing layer. The cooling equipment is divided into open type and closed type, so the circulating cooling water system is also divided into two categories: open type and closed type. Open systems are complex to design and operate.
There are two types of open cooling equipment: cooling pools and cooling towers, both of which mainly rely on the evaporation of water to reduce the water temperature.
In addition, cooling towers often use air.
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1. Because circulating water is not only available in the engine, but also in the air conditioner and heater. Generally, if the antifreeze is replaced, if it is the same ether or ethylene glycol, there is no need to consider the problem of cleaning.
2. If the replacement antifreeze is different, you can add 1-2 times of water purification after putting the old antifreeze and then add a new antifreeze, so that the original antifreeze content can be minimized. Even if the water is not clean, it has no effect because all antifreeze has water in it.
3. After replacing the anti-new freeze, pay attention to the specific gravity. It's not good to be too high or too low.
One more point. Generally, it is necessary to heat up the car and discharge the water, and there is a water discharge switch under the water tank and the cylinder body, (if the cylinder body does not have the relevant pipeline ventilation) it is best to let the front of the car be slightly lower. At the same time, it can also run the engine without water, and the time should not exceed one minute.
This can basically drain the water in the late stove system.
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The water pump is divided into cold water pump and hot water pump, the specific installation depends on the position of the cooling tower and the position of the heat exchanger, the location of the cooling tower is high, the hot water pump is needed, and the heat exchanger is high, and the cold water pump is needed.
Installation of hot water pumps: The location of the cooling tower is higher than the position of the heat exchanger, and a hot water pump needs to be installed on the return pipe.
Install a cold water pump: Otherwise, a cold water pump needs to be installed on the outlet pipe.
1. It will be beneficial to move the installation position of the water pump downward, and the suction stroke of the pump is mainly 42x2 + 14x2 + 5 = 115 meters of pipe and elbow tee. This loss is reduced when the pump is moved down, and the filling height is increased by 14 meters, making it easier to play the role of the pump.
2. The flow rate of the water pump and the cooling capacity of the cooling tower should be calculated when the circulating water temperature does not come, and attention should be paid to improving the efficiency of the cooling tower.
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Cooling water tower is used to cool water is a kind of device, water in the cooling water tower and the air flowing through the heat exchange, mass exchange so that the water temperature drops, the cooling tower is widely used in the air conditioning circulating water system and industrial circulating water system, the cooling water tower structure liquid: the water to be cooled is sprayed downward through the pipeline at the top of the water tower, and the water tower wall has a hair dryer to blow the air in, and there is a large exhaust fan at the top to pump the air out of the top of the tower, so as to facilitate the flow of air and accelerate the cooling of water. The following bidding network will take you to understand the common principles and advantages and disadvantages of several cooling towers.
1. According to the ventilation mode, there are natural ventilation cooling towers, mechanical ventilation cooling towers, and mixed ventilation cooling towers. Natural ventilation towers are easy to maintain and save power, but the infrastructure investment is large. The air volume and wind speed of the mechanical ventilation tower are controlled and adjusted by the machinery, the effect is stable, the air and water are evenly distributed, and the cooling efficiency is high, but the energy consumption is large.
According to the position of the fan installation, it can be divided into blower type and exhaust type. The blower type is installed on the bottom side of the tower to blow fresh air into the tower. The exhaust type is to install the fan at the top of the tower.
2. According to the flow direction of hot water and air, there are counter-flow cooling towers, cross-flow (AC) cooling towers, and mixed-flow cooling towers.
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Summary. Pump motor sets with a flow rate of 8000 m h and a head of m can be selected. According to the parameters you provide, we can calculate the flow rate and head of the pump motor unit, and then select the appropriate pump motor set according to these parameters.
The specific calculation method is as follows:1Calculate the flow rate of the pump motor unit:
q = 8000 m³/h2.Calculate the head of the pump motor unit: h = 12 m + 260 m 10 m = m, where 12 m is the height of the cooling tower, 260 m is the friction loss of the water pipe, and 10 m is the difference between the suction height of the pump motor unit and the water surface height of the pool.
3.Choose the right pump motor set according to the flow rate and head: Based on the calculation results, we can choose the pump motor set with a flow rate of 8000 m h and a head of m.
Our company wants to install a set of water cooling system, water cooling after the banquet recycling, from the pool pumping to the hot water eggplant orange back to the cooling tower (cooling tower at the top of the pool) total length of 260 meters, the cooling tower high hail mass degree of 12 meters (the highest height of the cooling tower of the whole system), the current pipe diameter of 1 meter, requires 8000 square meters of water volume, pressure, what pump motor unit to choose.
Pump motor sets with a flow rate of 8000 m h and a head of m can be selected. According to the parameters provided by you, we can calculate the flow rate and head of the seepage pump motor unit, and then select the appropriate pump motor unit according to these parameters. The specific calculation method is as follows:
1.Calculate the flow rate of the pump motor unit: q = 8000 m h2
Calculate the head of the pump motor unit: h = 12 m + 260 m 10 m = m, where 12 m is the height of the cooling tower, 260 m is the friction loss of the water pipe, and 10 m is the difference between the suction height of the pump motor unit and the water surface height of the pool. 3.
According to the flow rate and head, we can choose the right pump motor set with Li ridge: according to the calculation results, we can choose the pump motor set with a flow rate of 8000 m h and a head of m.
According to the actual coarse macro situation, multiple pump motor units can be selected to be used in parallel to meet the requirements of flow and head. At the same time, it is also necessary to select the appropriate pump type and motor power according to the actual situation to ensure the normal operation of the system.
Founded in 1997, the company is a large-scale FRP products in China, and is the largest manufacturer of air conditioners. It is one of the professional manufacturers, with total assets of 80 million yuan and more than 1,000 employees, including 112 senior and middle-level professional titles, with an annual production capacity of more than 100 million yuan. >>>More
European and American system: Yimeigao BAC Marley Yimeigao and BAC only make all-steel towers, ** high, good performance. Marley has made FRP and all-steel, ** which is relatively low among the three. All three brands are produced domestically. >>>More
Taiwan good opportunity Shanghai Golden Day The others are local brands, but it feels almost the same, mainly depends on how you maintain it, and the well-maintained local brand is generally good, and the brand is easy to use, and the imported ones are useless, and it is difficult to repair.
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For your question, I have consulted carefully with the technical department, and the technical department said: There is a problem with your problem. >>>More