Heat exchanger thermometer
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Why are the thermometers at the outlet of the heat exchanger placed inside the outlet valve? Can they be placed outside the outlet valve, that is, further away from the heat exchanger side? If it’s merely to measure the temperature of the fluid at the heat exchanger outlet, then it’s certainly better to have them as close as possible to the outlet of the heat exchanger. But considering the layout of the pipelines, I would like to move the thermometers outside. Could someone with expertise please explain this? Thank you
Of course, insulating the pipeline section from the heat exchanger to the thermometer (including the valves) will result in minimal heat loss, which can be ignored.
Then you can use a thermometer with a metal wire! I’m not sure about the specific model, but the thermometer can be moved to another place.
Placing it on the outside side is not advisable if the valve causes significant throttling and pressure reduction, as this can affect the accuracy of measurements; consider this carefully.