[TRNSYS-users] type11b

[Simon Janse]

Hey all together,
I have a problem regarding type11b (mode 5). I want to use it to 
seperate a mass flow into one part which is going into a multiport 
thermal storage which is getting heated by a boiler and the other part 
directly into the tee-piece where the hot flow of the tank arrives as 
well. I want a temperature of 35°C behind the tee-piece. The flow 
arrives at type11b with 25°C and is leaving the thermal storage with 
temperatures between 42°C and 58°C. This temperature I set as Heat 
source temperature and the set point temperature  to 35°C. Flow2 to the 
storage to doubleport1 which outlet is going into the tee-piece and 
flow1 directly into the tee-piece.
Now my temperature behind the tee-piece varies between 25°C and 48°C 
(the temperature in the top of the storage never drops under 40°C). I 
cannot find out what I set wrong to just get a constant flow (the flow 
rate differs on a monthly base) at a temperature of 35°C.

As I'm getting a little desperate here I'd be glad for any help!!

Best regards
Simon