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[TRNSYS-users] Buffer in a CSHPSS ?



Dear users (and especially members of ITW Stuttagrt),

 

During my Litterature study, i found hydraulic schemes for the CSHPSS in Friedrichshafen, Hamburg, Hannover, or Steinfurt, where the plants does NOT present a Buffer store. The documents tend to say that water goes from one Heat Exchanger (XH) to the other, and what is not needed for the demand is sent to the Seasonal Storage. As the documents on the Internet don’t offer too much information on the Regulation of the plants, I thought that the valves open and close as water is heated by the sun. So the regulation has to be very complex and tidy (strict).

 

But, i later found another document from ITW, displaying mixing-bottles (or buffer-bottles) between the HXs and the Seasonal storage (see second attached picture). Are these bottles always and necessarily present, especially in the plants in Friedrichshafen, Hamburg, Hannover, Chemnitz and Steinfurt ?

 

Many thanks to all of you,

 

Clement Rebillard

Veolia Environment

 

 
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Attachment: Hamburg Schema General.JPG
Description: Hamburg Schema General.JPG

Attachment: Friedrichshafen-Bottles.JPG
Description: Friedrichshafen-Bottles.JPG