Temperatures - CAESAR II - Help

CAESAR II Users Guide

Language
Русский
Product
CAESAR II
Search by Category
Help
CAESAR II Version
12

Specifies operating temperatures. The temperature boxes allow up to nine different operating cases. The error checker validates temperature values to ensure that they are within the code allowed ranges. You can exceed the ranges by typing the expansion coefficient in the temperature box in units of length/length. When you are using material 21 (user-defined material), type a thermal expansion coefficient instead of a temperature.

Typical units (depending on your unit system):

  • ºF

  • ºC

Values, whose absolute values are less than the Alpha Tolerance, in the temperature box are taken to be thermal expansion coefficients. The Alpha Tolerance is a configuration file parameter and is taken to be 0.05 by default. For example, if you wanted to type the thermal expansion coefficient equivalent to 11.37in./100ft., the calculation would be:

11.37in./100ft. * 1 ft./ 12in. = .009475 in./in.

Type this into the appropriate Temperature box.

A cut short does no more than reduce the length of a pipe element to zero. For example; if you wanted 8.5 cm of cold spring you could put in an 8.5 cm long element and then thermally shrink its length to zero. This allows the cold spring to be manipulated as an individual thermal case rather than as a concentrated force.

To edit operating conditions 4 through 9, double-click >> to display the Edit Operating Conditions dialog box.

The software automatically suggests load cases according to IGE/TD/12 Appendix 7. Use the following conventions for the specification of the operating conditions.

T1 – Maximum Temperature

T2 – Minimum Temperature

T3 – Minimum Summer Temperature

T4 – Maximum Winter Temperature

T5 – Maximum Temperature (flow induced) (optional)

T6 – Minimum Temperature (flow induced) (optional)

P1 – Maximum Incidental Pressure

P2 – Maximum Operating Pressure

P3 – Compressor Operation

P4 – Demand Pressure

HP – Hydrotest Pressure