Discharge rate models

Philosophy. The underlying technology for gas and liquid discharges is well developed in chemical engineering theory and full descriptions arc available in standard references such as Perry and Green (1984) and Crane Co. (1986). 

FIGURE 2.1. Logic diagram for discharge and dispersion models. 

TABLE 2.1. Conservative Design Approaches Based on the Objective of the Risk Study 

Protect vessel from overpressure Estimate minimum flow through emergency relief system. 

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Release Phase. Discharge rate models require a careful consideration of the phase of the released material. The phase of the discharge is dependent on the release process and can be determined by using thermodynamic diagrams or data. 

Fundamental Equations. Discharge rate models are based on a mechanical energy balance. A typical form of this balance is... 

Discharge rate model Models used to estimate the mass release rate or total quantity released during the discharge of material from a process. 

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