1- When I change the condenser small rod's (1mm OD) material from mild steel to copper, I am getting the same result.
2- The condenser large pipe (8mm OD) has a very high thermal conductivity (10000000 W/(m*K)) but the temperature across it is not constant.
If I need to pay, please send your paypal account to email@example.com. I AM REALLY STUCK.
What it looks like.
What it should look like