1. Design Cost:
The design of an open cooling tower is relatively simple, usually consisting of a pool, filler and fan. In contrast, the design of a closed cooling tower is more complicated. In addition to the pool, filler and fan, it is also necessary to add components such as a coolant circulation system and a heat exchanger. Therefore, from a design perspective, the cost of a closed cooling tower may be higher.
2. Operating Cost:
The operating cost of an open cooling tower is relatively low. Since it directly dissipates heat into the atmosphere, no additional equipment and energy are required to handle the coolant. The maintenance and cleaning of an open cooling tower are relatively simple, and there is no need to replace the coolant regularly.
The operating cost of a closed cooling tower is high. Since a closed cooling tower needs to circulate the coolant, additional pumps and piping systems are required to maintain the circulation. In addition, since the coolant in the closed cooling tower is exposed to the environment, it may be contaminated and corroded, and needs to be handled and maintained regularly. These additional equipment and maintenance work will increase the operating cost.
3. Environmental Impact:
Open cooling towers dissipate heat directly into the atmosphere and will not pollute the environment. However, open cooling towers may consume more water resources due to the evaporation of water.
Closed cooling towers reduce water consumption by circulating coolant to dissipate heat. However, the coolant in closed cooling towers may be contaminated and needs to be treated and maintained to prevent negative impacts on the environment.
Overall, open cooling towers are relatively low-cost and suitable for some industrial applications with low water consumption requirements. Closed cooling towers are more expensive, but may be more suitable in some environments with limited water consumption. When choosing a cooling tower type, it is necessary to comprehensively consider project needs, environmental requirements and economic factors to determine the most suitable solution.
