How are evaporative condensers used in winter?
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This post was last edited by quanyu502 on 2012-12-28 at 16:56. The ammonia system uses an evaporative condenser, which is a condenser that combines a fan and spray water. In winter, the ambient temperature is in the low teens degrees below zero, with lows reaching in the high teens degrees below zero. The cooling water is heated to 15–20°C using steam, which ensures that it does not freeze during use. However, the water coming down from the top spray nozzles causes severe icing on the lower packing material and the protective mesh surrounding it; running only the fan without the water pump does not achieve the desired condensation effect. In an environment like this, what should be done?
Start by running only the fan; turn on the pump when the condensation temperature and pressure are high. Stop the pump before shutting down, so that less freezing will occur
Is it possible to control the water pressure and flow rate of the spray pipe, so as to achieve heat exchange equilibrium as much as possible?
It’s better to go with a circulating water cooling system; for companies that already have such a system, using an evaporative condenser is somewhat wasteful and troublesome.
Is your evaporative cooling water collection tank equipped with electric heating? Generally, the temperature of the spray water should be maintained at no less than 10 degrees Celsius.
It’s probably too late by then, right? If the water pump isn’t turned on for half an hour, it’s likely to have frozen
We use steam for heating, and the water temperature stays around 20 degrees, but the ambient temperature is too low
The water pump does not have variable frequency control, and there is no valve at the outlet……
Are you saying to simply switch to a series of shell-and-tube heat exchangers, instead of using an evaporative type?