For the external coil of the equipment, cooling water and steam are used alternately to control the equipment’s temperature; what should be noted during operation?
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For the external coil of the equipment, cooling water and steam are used alternately to control the equipment’s temperature; what should be noted during operation? Is it technically feasible? When switching from circulating water to steam supply, is it necessary to drain the circulating water?
It is best to have it designed by a design institute, with detailed operating procedures provided. When switching from circulating water to steam, the water in the pipelines must be completely purged to prevent water hammer effects caused by residual water, which could damage the equipment
Make some structural changes: use an external jacket around the inner coil (the external jacket can also be filled with heat transfer oil), or employ electric heating outside the inner coil; in this way, it’s sufficient to drain the water during heating
Since it is all water, there is no issue of mixing different media, making the process entirely feasible. The following points should be noted: 1. For circulating water, it is best to have the flow from bottom to top, while for steam, the flow should be from top to bottom. 2. When switching to steam while the circulating water is in operation, it is necessary to drain all the circulating water. 3. It is best to vent and relieve pressure when switching from steam to circulating water.
It is technically feasible; when switching from circulating water to steam, the water must be completely drained. Generally, chemicals are added to circulating water, and introducing them into the steam and condensate systems is not beneficial. Also, for circulating water, it should enter at a low level and exit at a high level, while for steam, it should enter at a high level and exit at a low level; be careful not to get the connections mixed up.