Volume diameter, calculation, worked example

The separation between each particle in gas is immense, and usually thousands of times greater than the diameter of a single gas particle. In fact, more than 99 per cent of a gas s volume is empty space. The simple calculation in Worked Example 1.5 demonstrates this truth. 

The dimensionless parameters are often encountered in calculations. As a rule, it is inserted into the worksheet as it = 1 and then work with it in the known way Number of tubes in a heat exchanger N =2,200 it, for example. That is, the variable N remains dimensionless. Although we may recall that Mathcad keeps a built-in unit for items (base units) - that is mole. A Mole divided by Avogadro constant is an item that could be used in subsequent calculations. Figure 6.77 shows finding velocity of water in a certain heat exchanger the mbes number (np), interior diameter (dp), and volume consumption of water (Q) are known. 

Choose the Components option in the data browser window to start adding chemical components. Install the chemicals for a reactor acetone, ketene, and methane. Use the Find option to find the components ID and then add it. Next, under Properties, Specifications, select your base Property method. Since these components are liquids, use the BWRS thermodynamic package (Peng Robinson did not work for this example). Install the PFR reactor and add inlet and exit streams. Specify the feed stream. Input the reactor specifications double click on the reactor block. The reactor Data Browser opens. Specify an adiabatic reactor and the reactor volume to 5 m (1 m diameter and 6.366 m length), the value obtained from hand calculations. 

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