Heat exchanger
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Whether it is a heat exchanger or a storage tank, it needs to be heated to a semi-hot state. The semi-hot medium is soft water, which has a low inlet temperature and a high outlet temperature. What is the specific principle behind adding a drain at the top of the feed water and an exhaust valve at the return water side? Seeking discussion: there are also liquid drainage and venting ports on the heat exchanger.
I don’t understand whether soft water is a hot medium or a cold medium
A vent is typically installed at the highest point of the pipeline; for example, in water coolers, the circulating water flows in from below and out from above, and since the highest point of the pipeline is located on the outlet pipe, a vent is installed there. There are shut-off valves for both the supply water and return water. Generally, a drain is installed after the supply water shut-off valve and before the return water shut-off valve, so as to drain the liquid when maintaining the equipment.
Blowing or flushing before operation requires venting, and draining is sometimes necessary when the system is shut down.
A drain valve is installed above the water supply for the following main purposes: 1. To release air when the system is put into use and to remove waste water. A vent valve is provided on the return water line: 1. To check the steam condensate; 2. To discharge the condensate when there is no path for it to flow elsewhere; 3. To release air during the first time the system is used
Vent gas at the high point, and drain liquid at the low point
For medium-temperature water, there is a 25 mm pipe connected to a stop valve between the supply and return pipes, enabling their recirculation. The drain port and vent port are, I think, meant for maintenance purposes
When exactly should the discharge be carried out? When is it necessary to vent or drain?
Mm-hmm, I think that’s also a likely possibility. Do you mean that guides need to be added to both of them?
Mm-hm, it’s written very comprehensively. Thank you!
Remove sediment, air blockages, and drain the liquid when servicing the equipment