Problem 88HP

What is the percent error in specific volume if the ideal gas model is used to represent the behavior of superheated ammonia at 40°C and 500 kPa? What if the generalized compressibility chart, Fig. D.1, is used instead?

FIGURE D.1 Lee–Kesler simple fluid compressibility factor.

Solution 88HP

Step 1 of 5

The objective here is to determine the error percentage in two cases:

- If the ideal gas model is used to represent the behavior of superheated ammonia under the given conditions.
- Using the Compressibility chart.

Part (a)