Solar Water Heating - Glycol

Hi Chase,

The working fluid option sets the value of the working fluid specific heat, which you can see in the code here: github.com/NREL/ssc/blob/d349a139d22e15396a6c99dbd7f9153f2d9b3a66/ssc/cmod_swh.cpp#L239.



Based on this table from engineeringtoolbox.com, if we assume that the Cp values of water and glycol are at 40 degrees Celsius, the value of 3400 J/Kg-K seems to be a mixture of about 50%: www.engineeringtoolbox.com/ethylene-glycol-d_146.html



Best regards,
Paul.

Hi Chase,

I showed the code so you could see where the value it set and what the value is.

In order to make changes to the code, you would need to build your own version of SAM from the four repositories as described in the SAM repository wiki:

github.com/NREL/SAM/wiki

The build process is very involved, so if you want to go that route, be prepared to spend a lot of time getting things working before you can start modifying code.

The SDK allows you to set the values of inputs, run simulations, and read the values of outputs of SAM simulation modules, but it does not provide access to the underlying code.

Best regards,
Paul.