I would like to model a heating circuit in a building, with a single-speed pump (type 114) and a valve that is connected to a PID-controller. The valve should modulate the flow rate in the circuit, based on the control signal from the PID-controller. What is the easiest way to model this? I have not found a valve type appropriate for this purpose. Is it best to use a valve+single-speed pump, or is it easier to use a variable-speed pump instead? If I use the single-speed pump, will the flow rate be affected by a valve, or will it always keep the same, constant flow rate?

Best regards,

Johan

I was using Intel Fortran (Ifort 2022) with Visual Studio 2019 for developing and debugging Types, and everything was fine. But I changed my computer and this solution is no longer available. 

As far as I know, there is no debugging options with Type Studio, and TRNSYS 18 is not compatible with the new Intel Fortran compiler (Ifx).

What is now the best solution to debug user written types ?

Regards

Philippe

I would like to model a hydronic radiator, to be used together with type 56. I have found type 1231 in the TESS library, but I have also read about type 362, but I can´t find the latter in the library. Is it appropriate to use type 1231, or if type 362 is better, where do I find it? I can´t find any radiator types in the standard library...

Best regards, Johan

I connect as input an equation editor with Type 88 to handle the sensible heat loads.

Unfortunately, those are not assumed by the model - ie Type 88.

When I fill directly the heat loads in type 88 they are properly considered in the model.

When I try to interconnect equation editpr with a type 57 for example, in order make a link with the type 88, the heat loads are neither assumed.

Just to complete the message, I use a, equation editor, because I need to add several inputs from a type 9c

Does anyone face to the same issue ?

Thanks to the community.

Regards

Q.Courjeau

Specifically:

• The inverter output “Power to or from battery” differs from the battery output “Battery power”

• The SOC follows the battery power, not the inverter power

• The battery may stop charging before reaching the upper SOC limit, and may also limit discharge while the inverter still assumes full battery support

• No power is dumped or exchanged with the grid

I would like to confirm whether this behavior is expected due to the internal control logic, efficiencies, and power limits of Type 48b and the battery model, and whether this configuration is valid for system-level energy simulations.

👉 A detailed explanation of the observed behavior, energy balance analysis, and graphical interpretation is provided in the Annex of the document.

Thank you for any clarification.

I experienced a problem with Type390 from Transsolar. I am using TRNSYS 18.04 32 bits, and I downloaded the Type390 from Transolar. Since, there was only a 64 bit version, I tried to compile a 32 bit version, using Visual Studio 2019 and Intel Fortran Compiler 2022. Everything was fine, and the Type390.dll was build, both as Release and Debug version. They are located in their respective directory C:\TRNSYS18\UserLib\ReleaseDLLs and C:\TRNSYS18\UserLib\DebugsDLLs.

Nevertheless, when I tried to use Type390 in my project using Simulation Studio, I have an error "Type390 could not be located in either the trndll.dll or in an external dll". I found also in the listing file "Type390.dll was found but did not contain any components from the input file."

Can somebody tell me what mistake I have make ?

Thanks

Philippe

I have created a new component to connect with Type56 (Multizone building). After compiling the code and defining the variables properly in the proforma, I am still receiving Error 105, which indicates that it cannot link with trndll.dll or locate it in the external DLL.

I have double-checked, and the Release DLL folder does contain the generated file, but the error persists. I am attaching a screenshot for reference.

I would be very grateful if someone could help me identify the cause of this issue and suggest a solution.

Thank you in advance for your support.

coming. I am attaching the screenshot for your review. I would be thankful if someone could help me to figure it out this issue.