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What's the difference between open type cooling tower and closed cooling tower. 2016-10-10

What's the difference between open type cooling tower and closed cooling tower.
 
Closed cooling tower
1, the cooling medium in airtight pipe flow does not contact with outside air, heat through the heat exchanger tube wall and outside air, Exchange hot spray water and so on, finally realizes the cooling medium of cooling equipment.So it is not contaminated by the cooling medium, evaporation, concentration, without filling water dosing, thus ensuring the use of the associated equipment performance and life, daily management is also very convenient.
 
2, need not often maintenance downtime maintenance, stable operation safety, can reduce the associated equipment failure rate, is suitable for the system needs continuous operation.
 
3, the cooling medium because there was no sun and no contact with air, so will not produce algae and salt crystallization, "do not need to remove algae, in addition to salt," to ensure system performance.
 
4, can carry out dry run, no breeding ground for all kinds of germs, so especially suitable for places that have requirements of air purification requirements, are often applied to water shortage, dry areas.
 
5, when the fluid is volatile or toxicity, excitant solution, using the closed loop system, and will not pollute the environment, so it is widely used in fluid system with the strict requirements.
 
6, the coolant flow inside the airtight pipeline, by cooling medium for softening water, commonly system pipeline and cooling equipment in the heat exchanger will not scale, by cooling equipment operation efficiency is high, the whole system operation and energy saving.
 
Open type cooling tower
1, the cooling medium in the open system cycle, cycle medium because of evaporation and concentration, perennial dosing, hydrating, and caused by direct contact with the air cooling medium, easy to be polluted, when faced with sulfide days, fluid produces acid reaction, associated equipment damage.
 
2, often have the maintenance downtime for need continuous operation of the system.
 
3, open operation by cooling medium, the sun, easy to produce algae and salt crystallization, which affects the use of the system performance.
 
4, can not to run dry
 
5, when the fluid is volatile, toxicity, excitant solution, using open cooling tower operation mode pose a safety hazard.
 

6, the cooling medium in open loop, system pipeline and cooling equipment heat exchanger fouling, reduce the cooling equipment in thermal efficiency, increase the operation cost of the system.



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