Dear Aslam,

thanks lot for your effort. your calculations help me a lot and please i have some comments needed your and other friends:

- Assumption of value 100w steady state heat flow for piece of 1 m depend on what?
- If i need to calculate the length L to can define it at CAESAR II with assumption of Q=100w that mean L=1 m not 400mm as you mentioned in above post.
-Where L=1m (or L=400 mm)is too small, so can neglect it and then CASE#2 by Pillai that consider ambient temp through out the pump standby line is the most real case.

best regards