The following data is required in order to undertake a detailed unsteady analysis of the effect of ruptured tube in a heat exchanger system. The data which is relatively easy to assume has been marked with an asterisk (*).
Back Pressure Control Valves and Discharge Conditions
Details of any control valves in the system, particularly any used to main positive pressures within the system. Details of the systems discharge are also required (cooling tower, river discharge, closed circuit with pressure vessel etc).
Isolation valves may be installed throughout the system to allow isolation of any section. If it is requested that the precise characteristics of these valves are modelled, the valve manufacturer and type details will be required.
Spring Loaded Relief Valves
If spring relief valves are fitted that following data is need:
Burst / Rupture Disc
If burst discs are fitted that following data is need:
Air Valves / Vacuum Breakers
If any automatic air valves or vacuum breakers are incorporated on the system (usually on high points), the following is required:
Duty Flowrates and Pressures
The design duty flowrates and the pressures that are expected to be used above and below system (this may be available from the UFD’s).