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[EnergyPlus_Support] Re: connections of the hot water storage tank

No easy answere. In eplus there are some rules on what configurations are allowed in the plant loops and demand side loops. Don't dive in and try to replicate your schematic 1 to 1. Learn and understand what is and is not allowed otherwise you will only get hours of frustration. You will find that some of the nodepoints will shift around. Pumps may fall away for numerical stabillity and their effects lumped into other pumps. All your branches will end up in parallel arangements from the mixers and splitters (watch out for correct branch ordering). If you have to do this 1 to 1, then use TrnSys. You will sacrifice a bit from the building model goodness of eplus, but seeing that Trnsys was developed from the solar equipment modelling industry side, it may be the perfect tool for this job.

Else, if your aim is building orientated as apposed to machine, then you will find that the restrictions of loops, are not that sensitive to the outcomes of annual building energy usage. 



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "FrancescoP" <direzionecontraria@...> wrote:
>
> As you can see in the image http://img607.imageshack.us/img607/5029/hwdhwsolar.jpg
> I'm modelling a HVAC plant in which a hot water storage tank is connected with a boiler (hot water is produced by the combustion of natural gas), a solar thermal loop, the hot water loop, and the domestic water loop. Therefore the network of inlet and outlet nodes is quite complicated.
> The "Water Heater Configuration" of EnergyPlus (Figure 65 of input/output Reference) seems much more schematic.
> Do you have any suggestion for my modelling work, please? Should I work with nodes, splitters, and mixer (e.g. the connection of the hot water storage tank with the HW loop and with the DHW loop could be common and then a splitter could divide the HW loop from the DHW loop)?
> Best Regards
>




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