Design Guide for Hazloc / Industrial
Self regulating trace heating systems
01-5800-7N0012/-
05/2019-EHT-432712
Notice
Technical data subject to change without notice.
No claims for damage arising from alternations, errors or misprints shall be allowed.
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Step 4: Determine the required power rating
Since the power output of self-regulating trace heaters depends on the pipe temperature, the conditions within your application must be consid-
ered when choosing the trace heater:
▪
Determine the maintain temperature (= pipe temperature) of your application and the effective heat loss as calculated in Step 2.
▪
Find the required power output in the graph that contains the trace heater type and voltage you use (see tables on pages 11 to 13).
▪
If the required power output is between 2 trace heater types, choose the one with the higher rating.
▪
If the required power output exceeds the output of the trace heater with the highest rating, you may:
Use 2 or more trace heaters on the same pipe.
Use a thicker insulation or insulation material with a lower thermal conductivity.
Contact your local BARTEC distributor for further assistance.
→
Example
▪
Trace heater family as determined in Step 3:
PSB
▪
Power supply voltage:
230
V
▪
Maintain temperature:
25
°C
▪
Effective heat loss:
21.2 W/m
Trace heater that meets the required power output:
10PSB / PSB33
25
°C
21.2 W/m
