This program was developed by two professors at the University of Texas Tech, Dr. Theodore Wiesner of the department of chemical engineering and Dr. William Lan from the department of educational psychology. This virtual laboratory consists of three teams: a cooling tower, a heat exchanger and a packed column for absorption of ammonia. LabVIEW was used as an interface.
This virtual laboratory was part of a project to study whether there was any difference in student learning using the VL compared with those who used the actual equipment. The virtual laboratory is based on actual pilot units. In the same league is also an article on the results obtained from this study. You can also see an article which explains how the virtual laboratory unit operations and a presentation of the results at the national conference of chemical engineers in 2004.

In conclusion, the study showed that there was no difference in learning with the use of virtual laboratory. This lab could be of interest to universities where we do not have sufficient funds to purchase equipment for the laboratory unit operations. Personally I think it's a very good tool for student learning of chemical engineering. I hope this will be useful league.
Download Free Chemical Engineering Software: Virtual Unit Operations Laboratory (VUOL)