Adjust the temperature of the water cooler – is it better to increase the temperature of the incoming water or that of the returning water? ?
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Most of the water coolers in our factory are shell-and-tube heat exchangers; there are also a few floating-head heat exchangers, plate heat exchangers, etc. However, in winter, due to weather conditions, the temperature of the circulating water is not optimal, and it becomes necessary to make adjustments. Yet there are many issues associated with such adjustments. We would appreciate some advice: is it better to adjust the return water temperature, or should both temperatures be adjusted at the same time? !
Generally, it’s better to adjust the return water; there should be only one variable for adjustment
In a loop, turning on the water or turning it off should be the same.
The valves on a pipeline can be adjusted in the same way; however, there is a common practice – some are used to adjust the outlet water, while others are used to adjust the inlet water. Personally, I think it’s better to adjust the outlet water. Because once the valve gets clogged or doesn’t close properly, it’s easier to deal with the inlet valve; however, if problems arise due to the movement of the inlet valve, it becomes more complicated to handle. Also, even a slight blockage in the inlet valve has a significant impact on water intake.
It is definitely necessary to adjust the return water to prevent a shortage of water inside the cooler, which could lead to high temperatures on the surface of the pipes and the formation of scale.
Water should be adjusted to flow back; the usual method of adjustment is to keep the water supply valve fully open and adjust the opening degree of the return water valve. The reasons for this are as follows: 1. It helps to maintain stable pressure in the circulating water system. 2. Under the condition of stable pressure, it helps to ensure a stable flow rate of the circulating water in the water cooler. 3. Use the return water valve to adjust the temperature, with a gradual change in temperature. 4. The pressure change on the circulating water side of the equipment is small, resulting in minimal impact on the equipment. 5. Adjusted using a return water valve, offering a wide temperature control range. This post was last edited by Technician on 2007-12-1 15:16]
I agree with the opinion from floor 7; it is mainly to prevent the cooler from running out of water during adjustments to the water supply, which could lead to high temperatures and subsequent problems