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Using the information in the diagram, write a description of how a refrigera
Using the information in the diagram, write a description of how a refrigera
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2024-01-09
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问题
Using the information in the diagram, write a description of how a refrigerator works. You may use your own knowledge and experience in addition to the diagram.
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答案
The diagram shows in four stages how a refrigerator works.
According to the diagram, in the first stage, high-pressure liquid flows in the capillary tube. Food within the refrigerator sends out vapor. In this stage, the high-pressure liquid is heated by the vapor to warm low-pressure gas. Next, the warm low-pressure gas flows ahead, arriving at the compressor. At this stage, it is compressed to hot high-pressure gas. Stage three of the process is when the hot high-pressure gas passes the condenser, where it is cooled to high-pressure liquid. Where is the heat then? It is transferred to atmosphere. Finally, the cool high-pressure liquid continues to flow forward and enters the capillary tube. At this point, it is heated by the vapor from food within the refrigerator again and a new cycle begins.
Thus, the process diagram illustrates the principle of the refrigerator.
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