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Dear all,

I am modelling a VRF system for a typical office building in Japan (Climate zone 3A). The result indicates that a large proportion of energy goes to heating which is generally not the case in reality.

I exported the Openstudio file to Energyplus and called the hourly COP. I found that the COP for heating is constantly a lot lower (1-1.5)* than the rated COP which I have inputted (3.5)

I am using the default performance curves in Openstudio.

Any ideas what can be done?

*COP <1 has also been observed on some occasions.

Regards, Daniel

Dear all,

I am modelling a VRF system for a typical office building in Japan (Climate zone 3A). The result indicates that a large proportion of energy goes to heating which is generally not the case in reality.

I exported the Openstudio file to Energyplus and called the hourly COP. I found that the COP for heating is constantly a lot lower (1-1.5)* (1-1.5) than the rated COP which I have inputted (3.5)(3.5) The COP also appears to reach a max. at around 3.

I am using the default performance curves in Openstudio.

Any ideas what can be done?

*COP <1 has also been observed on some occasions.done?

Regards, Daniel

Dear all,

I am modelling a VRF system for a typical office building in Japan (Climate zone 3A). The result indicates that a large proportion of energy goes to heating which is generally not the case in reality.

I exported the Openstudio file to Energyplus and called the hourly COP. I found that the COP for heating is constantly a lot lower (1-1.5) than the rated COP which I have inputted (3.5) The COP also appears to reach a max. at around 3.

I am using the default performance curves in Openstudio.

Any ideas what can be done?

Regards, Daniel