(Eng sub) Calculation of methanol concentration using a specific gravimeter

Training of Production and Process Engineering (Single-stage Compression Refrigeration System)
　You can deepen your understanding by reading the video together with the text.
This is an introduction to the refrigeration system in the Marine Bioresources Research Building.
In the refrigeration engineering theory, it was only necessary to understand the change of state of the refrigerant, but various devices are required for actual operation.
Please understand the role of these devices and the reason why pipes are thick and thin.
The flow of refrigerant in the single-stage compression refrigeration system is a little complicated because it is divided into two rooms, a room at 5 ℃ at the entrance of the freezer and a room at -25 ℃ at the back.
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