| 摘要 |
PURPOSE: An experiment system using a refrigerant parallel expansion method is provided to perform easily an experimental process in an education system by exposing automatic control devices of a refrigeration system and a freezing system. CONSTITUTION: A compressor(211), a condenser(212), a receiver tank(214), a sight glass, a filter dryer, and the first to the third electronic valves are installed on a plate(201). The first to the third electronic valves are connected in parallel to each other. An automatic temperature expansion value, a manual expansion valve, and a capillary tube expansion valve are installed at each lower side of the first to the third electronic valves, respectively. A chamber(220) includes a vaporization coil connected to the compressor. A control panel(202) is used for controlling each device of a cooling apparatus.
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