Couloireric 0 Posted September 24, 2018 Report Share Posted September 24, 2018 In TSOL 5.0 I have used a process system A.13 with undersized storage to collector array and I have noticed energy balance on report does not work out, what is happening here? There is electric boiler backup to process. If I increase the storage amount by 50% the energy balance works out. Quote Link to post Share on other sites
developer_ur 2 Posted September 25, 2018 Report Share Posted September 25, 2018 Hi Couloireric could you please write down the terms belonging to the balance, from your point of view? Did you take the tank losses into account? What collector size, process heat demand and tank volume did you use? You can also attach your project (*.tsproj) file. Kind regards Quote Link to post Share on other sites
Couloireric 0 Posted September 25, 2018 Author Report Share Posted September 25, 2018 Yes, should have sent this. Tank losses are taken into account. Is the unbalance due to undersized storage because in reality there will be no storage but there is an electric boiler backup to the process flow that turns on if solar can not supply the 135 F temps needed ? Thank you for your response. Best Regards, Eric AztecSolar-UCDavis_Biodigester-TSOLreport-var6Revision-9-18.pdf Quote Link to post Share on other sites
developer_ur 2 Posted September 26, 2018 Report Share Posted September 26, 2018 Hi Eric, our simulation is based on intervals with a length of 6 minutes. If some temperatures or volume flows change to abruptly, we reduce the interval to 1 minute. In your scenario you have large volume flows. If the tank's volume is exchanged completedly within a simulation intervall (6 or 1 minute), we will get balance errors. The system A13 is not suited to simulate with such a small tank. Quote Link to post Share on other sites
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