How to calculate heat balance?
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In the oil refining unit, steam tracing pipelines were originally used, but now the leaders want to use hot water tracing for energy saving reasons. Originally, the amount of steam was known, but now how to determine the amount of hot water?
In order to save energy, it is a good thing to use hot water instead of steam tracing, but it must be considered whether the heat supply can meet the requirements. Because steam provides latent heat and sensible heat during the heat tracing process ； Hot water can only provide sensible heat. In order to meet the heating needs, under the same conditions, the required hot water volume is obviously much higher than the steam flow rate. Therefore, whether the original heat tracing pipe diameter can meet the requirements must be calculated to determine. Now that the required steam flow rate is known, the amount of heat that the main pipe needs to be supplemented is known, and the host can calculate the amount of hot water based on this amount of heat. Notice: Under the same conditions, steam and hot water have different heat transfer coefficients.
Please take a look at the principles of chemical engineering. It is explained in detail above.