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@ -277,7 +277,7 @@ To get precise temperature readings sensors must be insulated from ambient air t
But 2 sensors "Before evaporator" and "After evaporator" are critical to EEV and needs an extra attention. Temperature of this sensors must be as close to the temperature of copper tube as it possible. So install Tae and Tbe sensors as pictured below. You can use thermal paste, but there is no significant difference with much more available silicone. Tape isn't shown below, for clarity, but must be used with every insulation layer.<br>
<img src="./m_ds18b20_evaporator_mount.jpg" height="700"><br><br>
Overall, your system with sensors positions will look like at scheme below. Refrigerators (heat pumps) are very simple inside. The only part is not shown below is an oil filter.<br>
<img src="./m_ds18b20_ref_scheme.png" height="700"><br><br>
<img src="./m_HeatPump_scheme2.png" width="500"><br><br>
About water(glycol)<->refrigerant heat exchangers. You can use plate heat exchangers. Pros: best efficiency. Cons: costs money.<br>
<img src="./m_plate_heat_exchangers.jpg" width="500"><br><br>
And oxygen brazing with (20%+)silver+copper solder required here: