Hi all, I am getting errors while using TRNSYS16 with GenOpt. I run four simulations at a time, they all load and even start returning some results, and then after a few seconds they stop because of a fatal error. "The subroutine SAT of the utility routine PSYCHROMETRICS, which calculates the thermodynamic properties of moist air, has been called with a temperature below absolute zero (-273 C). Please check the TYPE routine which calls the psychrometrics routine for possible sources of errors." This error is generated by Type760 (heat-recovery ventilator). I also get a lot of notices generated by Type56 "The utility routine PSYCHROMETRICS, which calculates the thermodynamic properties of moist air, has been called with conditions that yield a saturation pressure greater than the ambient pressure." I have compared my .dck and .bui files with previous versions that did work properly, without finding any difference that could explain the errors. One strange output that I get from my simulation is that, while Bldg-HourTemp.out shows that temperatures in all 3 zones of the building are fine, Type56's output for air temperature on the second floor is always zero (until it crashes). The heating loads are also very close to zero. First simulation run always crashes at time 54.5 hours, simulation run 2 at 30.5 hours, simulation 3 at 31 and simulation 4 at 6 hours. I have checked outputs from Type33 and Type760, and they all seem to be normal until simulation crashes. Does anybody have an idea of what could cause that? Thank you, Marie-Claude Hamelin _______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-users |