Why is there such a large difference in heat exchange efficiency between two floating coil heat exchangers of the same model?
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Operating parameters of the first positive-displacement coil heat exchanger: secondary water flow rate: 11 m³/h; supply and return water temperatures: 46°C/5°C; primary water temperatures: 78°C/70°C. Operating parameters of the second positive-displacement coil heat exchanger: secondary water flow rate: 15 m³/h; supply and return water temperatures: 53°C/5°C; primary water temperatures: 73°C/63°C. For the first stage of water treatment, a 2-ton hot water boiler is used. The problem lies with the first unit: the flow rate of water in the second stage is low, and as a result the temperature of the water coming out is low. Why is that?
Could you explain it in more detail? Thank you
If the data is accurate, check for any issues related to leaks or other problems such as blockages
Is there a place where water is leaking, as mentioned upstairs, or is there a blockage in the pipes?
The small pipeline might be a bit blocked.
It is preliminarily estimated that scaling has occurred, affecting the heat exchange efficiency.