[TRNSYS-users] Issues with STEC library - air receiver

[Lisa Hagg]

Hi,

I'm currently doing my master thesis with the help of TRNSYS, but there seems to be an issue which I can't overcome.

The issue is within the air receiver in the STEC library. As soon as the air flow is set to a value of 8040 and below a fortran error occurs. The error code is 696: real zero raised to negative power. However I have looked in the source code of the type (422) and I can't find a negative power anywhere, so I don't understand how 0 can be raised to a negative power in the type, when there seems to be no negative power in the code at all.

I have isolated each type used in my code, and all signs point towards the air receiver being the issue, since the other types work by there own when the air flow is set below 8140.

I have also seen quite a few papers that use a heat exchanger as the tower, but still have the air receiver. Is this necessary and something I should do as well? Because I thought that the air receiver was the tower, but that might not be the case.

All kind of help is very appreciated!

Kind regards,

Lisa Hägg

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