Differences in the configuration of hot and cold coal control valves
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1. The cooling circulating water is used as a coolant to cool the process medium; the flow rate of this cooling water is adjusted based on the temperature at the outlet on the process side. What is the difference between return water and feed water? 2. So what about steam heat exchange? If it is anti-coagulant water hammer, what about hot water for sensible heat exchange? Does it matter which side it’s placed on? 3. I am now faced with the situation of having to set up a control valve for the inlet cooling water, using the temperature reading from the return water as a reference for regulation. I don’t understand what the differences are between these various configurations What are the decisive factors and purposes behind making such control settings? Therefore, I’m posting this to seek advice from the seniors here
If the goal is stable adjustment, wouldn’t it be more convenient and faster to set the temperature measurement point and the adjustment mechanism on the same side?
The practical experience shared by the guy upstairs is really valuable! It just helped me clarify the unclear points from the previous on-site debugging. Here are two additional practical details: First, if process temperature control is involved, choosing adjustment on the return water side provides a more rapid response, as the return water temperature directly reflects the effect of heat exchange, allowing for quicker correction of any deviations in heat exchange ； Secondly, regardless of which side it is installed on, it is advisable to add a bypass valve; this allows for maintenance work to be carried out without having to shut down the entire circulation system, thereby reducing the impact on production. These are all based on experience; for the specific selection and installation, it is still necessary to refer to the manufacturer’s manual in light of the project’s operating conditions.