Measurement of inlet and outlet flow rates of coolant circulating water
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This post was last edited by hesonchang214 on 2018-8-11 at 10:21. I would like to ask my colleagues: Our factory has recently been using ultrasonic flow meters to measure the instantaneous flow rate of the circulating water at the inlet and outlet of the coolers. Why is the flow rate different at these two points – is it higher at the inlet and lower at the outlet? Where does the water go?
Theoretically, it should be the same size? In no way did any leakage from the pipes occur; was this the case with several units? How to explain it?
Scaling inside the circulating water outlet pipeline can cause the flow rate measured by ultrasonic methods to be lower than the actual value.
A slight deviation is normal; there are always errors in measurement
There will be errors in the pipe diameter, wall thickness, and internal scaling
The water temperature at the outlet is high; scale may be forming
Won’t there be a pressure drop in the condenser?
What is the difference in import and export volumes? Ultrasonic measurement determines the flow velocity and then converts it into flow rate; does the length of the straight pipe section need to be taken into account?