Temperatures conversion formulas

The formula approach Set up an equation using the temperature conversion formula for changing from Fahrenheit to Celsius ... 

Temperature conversions are performed with the familiar formulas... 

In doing temperature conversions, you will need the following formulas. 

The base unit for temperature in the SI system is Kelvin. Here are the three major temperature conversion formulas ... 

If you look at your spreadsheet next month, you will probably not know what formulas were used. Therefore we document the spreadsheet to show how it works by adding the text in cells A8, A9, and AIO in Figure 3-3d. In cell A8, write Formulas . In cell A9, write C2 = B2+ A 3 and, in cell AIO, write D2 = (9/5) B2+32 . Documentation is an excellent practice for every spreadsheet. As you learn to use your spreadsheet, you should use Copy and Paste commands to copy the formulas used in cells C2 and D2 into the text in cells A9 and AIO. This practice saves time and reduces transcription errors. Another basic form of documentation that we will add to future spreadsheets is a title in cell AI. A title such as Temperature Conversions tells us immediately what spreadsheet we are looking at. 

By measuring the hotness or coldness of a substance, we determine temperature. Process operators use a variety of temperature systems. The four most common are Kelvin (K), Celsius (C), Fahrenheit (F), and Rankine (R). Temperature conversion formulas are available to be used by process technicians. 

These two temperature conversion formulas are often written K=°C+ 273.15 and°F = (1.8 X °C) + 32. Although these yield the correct number, they do not take into account the units. 

Information implied molar mass of CO2 Table 1.3 conversion factors for volume and mass formulas for temperature conversion from °F to °C and from °C to K... 

Find the necessary conversion factors. 2. Use the temperature conversion formula. 3. Convert oz to grams and use the molar mass of CO2 as a conversion factor. ... 

In this equation all percentages are on a volume basis. The term XSA refers to the excess air over the stoichiometric requirement. The volumes of the air and gas must be measured at the same temperature and pressure. For consistency, it is best to first convert to actual conditions (i.e., from actual cubic feet (ACF) to standard cubic feet (SCF). The following formula can be used for this conversion ... 

For a given dehydrogenation system, i.e., operating temperature and pressure, thermodynamic theory provides a limit to the per pass conversion that can he achieved. A general formula is... 

The solution for Ya is simple, even elegant, but what is the value of F It is equal to the mass holdup divided by the mass throughput. Equation (1.41), but there is no simple formula for the holdup when the density is variable. The same gas-phase reactor will give different conversions for A when the reactions are A 2B and A —> B, even though it is operated at the same temperature and pressure and the first-order rate constants are identical. 

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