The Differences Between the Closed Cooling Tower and the Open Cooling Tower

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Date:2016-08-25 14:40:05

One, The Principle of Closed Cooling Tower and Open Cooling Tower

1. Open type cooling tower cooling principle: The circulating water spray water to the glass fiber filler, through contacting with water and air to heat, another fan drives the air circulation, and water after heat exchange with the hot air flow, so as to achieve cooling effect.

2. Cooling Principle of Closed Cooling Tower:

ⓐ Cycle and docking equipment, constitutes a closed circulatory system (medium circulation is soft water. For the device object for cooling, the device object in the heat from the cooling unit.

ⓑ Cycle in cooling tower, cooling tower cooling. Not with internal circulating water contact, only through the cooling tower of the copper table cooler cooling heat exchanger. In this kind of cooling, through the automatic control, according to the temperature set the motor running (this can cost).

Two, The Operating Cost Difference Between the Closed Cooling Tower and The Open Type Cooling Tower

In contrasting of cooling tower , the same operating time (parameters: flow 100t/H, temperature drop 35~32 ℃)

The operating costs of closed cooling tower is much lower than that of open type cooling tower, as shown above, the water consumption, cleaning times, material replacement cost of open type cooling tower is much larger than that of closed type cooling tower.

Three, the Advantages and Disadvantages of Closed Type Cooling Tower and Open Type Cooling Tower

1, The Advantages of Closed Type Cooling Tower

① The whole pipeline system is a closed loop, the circulating water is distilled water, can make the vacuum furnace body heat exchanger and small pipeline without scaling, no pollution, no corrosion, almost can make the vacuum furnace doubled service life.

② There is almost no water consumption of circulating water, the same type of equipment, water saving of about 7,000 tons per year. Closed cooling tower with intelligent control, the same type of equipment every year can save 30,000 kwh of electricity.

③ The installation is simple, no need to dig underground pool, the pipeline is convenient to use.

④ To improve the production efficiency, soften water cycle, no fouling, no jam, no loss, prolong the service life of equipment, security equipment, reliable, stable operation, reduce the failure, to prevent accidents; closed loop, no impurities to enter, no medium evaporation, no pollution to improve plant utilization coefficient, no need to pool, and reduces the occupation of land, saving space; space small, installation, mobile and convenient arrangement, the structure is compact, the operation is convenient, operation is stable, the degree of automation is high, save operating costs, a variety of automatic mode switching, intelligent control, a wide range of uses, the exchange of heat exchanger non corrosive medium, can be directly cooling; life cycle cost is low, operation and maintenance costs low.

2. The Disadvantages of Closed Cooling Tower

Initial investment cost of closed cooling tower is high,  which is three times as much as that of open type tower. (but closed type tower recovery value can also be 80,000 to 100,000 after 10 years' use, while open tower is little or no value) We should keep an eye on the prolonging from various aspects to consider the pros and cons. From the point of view of cooling tower to the prospect of the industry, closed cooling tower has become the mainstream.

3. Advantages of the Open Cooling Tower

The construction costs is ratherly low, comparing with the closed cooling tower, the costs is only the 1/3.

4. The Disadvantages of the Open Cooling Tower

① Some open cooling towers need 1~2 water pools of 20 ㎡.

② As the drop of the water and the open type lift loss, the electricity consumption of the open type cooling tower will be more, and need be equipped with the 2 sets of pumps, big electricity consumption.

Four. The Selection of the Closed Cooling Tower and the Open Cooling Tower

In summary of the above comparision of technical parameter and the performance, we can see that the construction price of the closed cooling tower is much more higher than the open cooling tower, and the value maintainance will be better than the open cooling tower. Also the operation costs of the closed cooling tower will be less than the open cooling tower. So, we suggest that our customers to choose the closed cooling tower.

1. Ensure the service life of the equipment, reduce the maintainance costs of the tower.

2. Environmental protection and energy saving, the price costs difference of the closed and open type cooling tower will be saved in 3 years.

3. The closed cooling tower adopts the copper coil as the heat radiator, guarantee the equipment with value keeping.