[TRNSYS-users] help

[yubai]

Dear Trnsys users,
I have been simulating the solar hot water system with a variable flow rate 
which mainly consists of type 534 solar collector(TESS), type 60 storage 
tank with one internal heat exchanger and four pipes of type 31. Generally, 
in type 534, if I set the 'pump control consumption' to 1,it will means 
that we could keep the collector outlet at the specified condition (eg, the 
outlet temperature of the collector is 55°C) by varying the flow rate. 
Unfortunately, I tried running many times but it always indicates these 
error messages that the UAHx of storage could not converge during one time 
step and the following time step it will use the value of the last 
iteration. I have attached fiche tpf .
I would like to know what the problem is about this system.
I would appreciate any help
Thanks in advance
yu.Bai


Doctorante
LOCIE-groupe Développement Energétique Durable
ESIGEC-Université de Savoie
Campus Scientifique Savoie Technolac
73376- Le Bourget du Lac Cedex (France)
Tel: 04 79 26 44 34
email: yu.bai at etu.univ-savoie.fr
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