Internal heat exchange is one of the most important elements for refrigerating systems, CO2 CO2 cooling systems in the study also includes an internal heat exchanger and its results were not included in the method of control really. It's too difficult to determine the effects of heat exchange inside because of the behavior of the system is difficult to assess in a simple analysis method for real-time control. In this section. the effect of an internal heat exchanger and change of metal compounds, the cooling compressor with suction control methods will be analyzed. In real time bidding to control how it will be assumed that the level of Superheat (DSH) that sucked air compressor is not changed, even if the change of the open valve, expansion, however, is that the internal heat exchanger there is a possibility of changing the vacuum compressor DSH. The rise of high vacuum at DSH that produces only the incoming energy and thermodynamics of rule changes for specific additional warranty year portal in the section making volatile, which is shown in Figure 12, so the DSH. Change the compressor suction can create or add a specific cooling capacity reduction, which is undetectable by the real time control.
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