After absorbing heat under constant pressure, hot water turns into a mixture of steam and water. How can one determine the proportion of each component in this mixture?
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After absorbing heat under constant pressure, hot water turns into a mixture of steam and water. How can one determine the proportion of each component in this mixture? What are the requirements, and how is it calculated? The outlet pressure and temperature are known, as are the inlet pressure, temperature, and flow rate; the heat transfer amount is unknown.
When a substance is in vapor-liquid equilibrium, both temperature and pressure remain constant. So you already know that the temperature and pressure at the inlet and outlet cannot be used to determine the ratio of the vapor to the liquid mixture. One more parameter is needed; for example, any one of heat, entropy, internal energy, or total volume can be used to calculate the dryness fraction of the soda mixture. However, heat, entropy, and internal energy cannot be measured, and volume is also difficult to measure. The only way is to calculate it through the heat transfer amount.