Thanks sir Abdulfatah for your response, you seem to have alerted me to the error in my question. Yes I mean when it is modeled in TRNSYS simulation program. The question is corrected.

I don't think TRNSYS accounts for the pressure-dependent variations in liquid properties .. Fluid density and specific heat capacity are often defined in the parameters tab, not the input tab.

If this is critical, you may try defining you own types (in Fortran) .. or couple TRNSYS with other tools like EES, which -I guess- can do that easily