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Hi everyone,

I am using EnergyPlus 8.2 in Ubuntu for performing a series of simulations of a building located in Lima, Peru. Since my intention is to compare a reference and a proposed model (i.e. ASHRAE 90.1), there are two models: one with almost everything autosized, and the other with nearly everything predefined (except those values not clearly specified by the HVAC engineer).

Anyways, both models run Sizing:Plant and Sizing:Zone calculations, and there seem to be no important errors in the *.err file (only a few convergence ones... the system corresponds to System 8 on Appendix G: VAV PIU with Reheat).

When simulating the sizing periods (i.e. winter and summer design days) every conditioned zone's temperature lies between setpoints (21 and 24 °C); so I assume Sizing is being done correctly. However, when simulating the whole year, the results show about 3000 unmet hours, using a tolerance of 0.55°C. This happens with both the proposed and reference building.

I, honestly, do not know what to check anymore... any suggestions?

THANKS VERY MUCH IN ADVANCE! HAPPY HOLIDAYS!

Hi everyone,

I am using EnergyPlus 8.2 in Ubuntu for performing a series of simulations of a building located in Lima, Peru. Since my intention is to compare a reference and a proposed model (i.e. ASHRAE 90.1), there are two models: one with almost everything autosized, and the other with nearly everything predefined (except those values not clearly specified by the HVAC engineer).

Anyways, both models run Sizing:Plant and Sizing:Zone calculations, and there seem to be no important errors in the *.err file (only a few convergence ones... the system corresponds to System 8 on Appendix G: VAV PIU with Reheat).

When simulating the sizing periods (i.e. winter and summer design days) every conditioned zone's temperature lies between setpoints (21 and 24 °C); so I assume Sizing is being done correctly. However, when simulating the whole year, the results show about 3000 unmet hours, using a tolerance of 0.55°C. This happens with both the proposed and reference building.

I, honestly, do not know what to check anymore... any suggestions?

THANKS VERY MUCH IN ADVANCE! HAPPY HOLIDAYS!