E-raamat: RELEASE: A Model with Data to Predict Aerosol Rainout in Accidental Releases

Documents the Center for Chemical Process Safety's (CCPS) ten-year effort to develop a usable model to predict liquid rainout from a two-phase discharge, and to provide an experimental data set to validate that model. Discusses the results of two large field controlled-release experimental programs one in Oklahoma using water and CFC-11, and one at the US Department of Energy Nevada spill test facility which tested chlorine, methylamine, and cyclohexane. The second part includes an additional model for correcting rainout data and discusses the theory behind the model, additional modeling details, and aerosol drop size correlation. Member price $159.20. Annotation c. by Book News, Inc., Portland, Or.

This book documents CCPS's Aerosol Research Program to develop a model to predict liquid rainout from release of a pressurized, liquefied gas--and, hence the residual amount of material in a vapor cloud, which may be greater than the amount calculated from an enthalpy chart. RELEASE predicts the rate of fluid discharge, the depressurization, flashing and formation of liquid drops, the entrainment of drops into the vapor cloud, the subsequent spreading of the jet, and rate of liquid rainout to a pool on the ground. Designed in a modular fashion to permit adjustment and corrections as new data become available, its multi-layered approach contains sub-models that include the complexities of many variables, including the effect of liquid superheat, rate of bubble growth, criterion for bubble formation, and heat transfer from the liquid to the growing vapor bubble. To validate RELEASE, CCPS conducted small- and large-scale experiments using superheated water, heated liquefied chlorine, methylamine, and cyclohexane that produced valuable data in an area where data are scarce. This book gives complete access, in text and on CD-ROM, to the model and the test data, giving users an informed ability to apply the model to their own work.