Hello,

I have a question regarding the Zone Multiplier function in EnergyPlus. I am modeling an office building of 5 floors and I was planning on modelling the middle one and use zone multiplier 5 on all zones. However, I noticed that the ratio of heating and cooling load differs strongly. I find this unusual as in my model have chosen adiabatic boundary conditions for the internal floors and ceilings, so I would expect heating and cooling loads to be around x5 (with a small difference of height effects). However, the results show that the total heating demand is lower and the cooling load much more:

When using Zone Multiplier 1for all zones:

When using Zone Multiplier 5 for all zones:

And this is my geometry:

Anyone more knowledge around why these results of heating and cooling consumption assume such different proportions when using zone multiplier?

Thanks in advance!

Hello,

I have a question regarding the Zone Multiplier function in EnergyPlus. I am modeling an office building of 5 floors and I was planning on modelling the middle one and use zone multiplier 5 on all zones. However, I noticed that the ratio of heating and cooling load differs strongly. I find this unusual as in my model have chosen adiabatic boundary conditions for the internal floors and ceilings, so I would expect heating and cooling loads to be around x5 (with a small difference of height effects). However, the results show that the total heating demand is lower and the cooling load much more:

When using Zone Multiplier 1for all zones:

When using Zone Multiplier 5 for all zones:

And this is my geometry:

Anyone more knowledge around why these results of heating and cooling consumption assume such different proportions when using zone multiplier?

Thanks in advance!

Hello,

I have a question regarding modeled the Zone Multiplier function in EnergyPlus. I am modeling middle floor of an office building, I hope to get the consumption of the entire building of 5 floors and by using zone multiplier. The floor I was planning on modelling the middle one and use zone multiplier 5 on all zones. However, I noticed that the ratio of heating and cooling load differs strongly. I find this unusual as in my model have chosen modeled has adiabatic boundary conditions for the internal floors roof and ceilings, so I would expect floor. The installations included is an airloop, central heating and cooling loads to be around x5 (with a small difference of height effects). However, the results show that the total heating demand is lower coil, reheat coils and the cooling load much more:

Hello,

I have modeled the middle floor of an office building, I hope to get the consumption of the entire building of 5 floors by using zone multiplier. The floor I modeled has adiabatic boundary conditions for the roof and floor. The installations included is an airloop, central heating and cooling coil, reheat coils and baseboards for each zone. When modeling just 1 floor, I get following results:

When using Zone Multiplier 5 for all zones:

And this is my geometry:

Anyone more knowledge around why these results of heating and cooling consumption assume such different proportions when using zone multiplier? Thanks in advance!