[EnergyPlus_Support] Modelling a CCHP System by coupling Generator:Microturbine with ChillerHeater:Absorption:DoubleEffect [1 Attachment]

["soft.parade@xxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

Dear all,

I have some issues in modelling a CCHP System by coupling the Generator:Microturbine object with the ChillerHeater:Absorption:DoubleEffect. Considering that the Generator Operation Scheme Type described in the object ElectricLoadCenter:Distribution is "FollowThermal", I have generated a loop between the Generator (on the supply side) and the ChillerHeater (on the demand side), ad described in the I/O reference.

Quote: "The FollowThermal and FollowThermalLimitElectrical schemes are for heat following
cogeneration and run the generators to meet the thermal demand. The FollowThermal
schemes allow excess electrical generation to be exported to the grid, while the
FollowThermalLimitElectrical scheme restricts generator output to a maximum of the
buildingâ??s current electrical demand (so that no electricity is exported). The thermal demand
is determined from the plant modeling and depends on the flow requested by other
components on the demand side of the plant loop, the loop temperatures, and the loop
temperature set point. The electric load center converts the thermal load to an electrical load
using a nominal ratio of the thermal to electrical power production for each generator. For
these schemes, the generator needs to be connected to the supply side of a plant loop and
components that request hot water need to be on the demand side of the plant loop".

Nevertheless, on run-time I get this error: 

** Severe  ** SimExhaustAbsorber: Invalid call to Exhaust Absorbtion Chiller-Heater CHILLER COGENERATORE 
**   ~~~   ** Node connections in branch are not consistent with object nodes.

The error is obviously referred to the ChillerHeater branch on the Demand Side. So, my question is: "How do I connect the ChillerHeater with the Generator in a loop if the related object doesn't have Source Side Inlet/Outlet Nodes?

Thanks in advance for any help you can provide me. This problem is driving me crazy

Best,
Angelo

P.S. I attach the portion of the idf I'm talking about.

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Posted by: soft.parade@xxxxxxxxxx

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Attachment Converted: "D:\Eudora\Attach\CCHP.idf"