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Dear All,

I have simulated two types of construction for a one-story house (1 living room, 1 sleeping room and 1 bathroom) in EnergyPlus. Each room has 1 window and the windows and doors are identical for both constructions. The house is quite small (320 square foot) and there are various heat gains such as people and home appliances(Laptop, electric cooker, TV, washing machine, etc.). There is no shading or natural ventilation simulated. and the location is in climate zone 3B-dry.

The construction with lower u-value has lower required heating energy that totally makes sense.

But the construction with lower U-value has higher required cooling energy than the other one. How can this be justified? Can it be due to the gained energy produced by the home appliances? or windows?

I have rechecked the simulation various times and there seems to be no problem. Are these results justifiable? I appreciate any hint!

Thanks a lot in advance!

Dear All,

I have simulated two types of construction for a one-story house (1 living room, 1 sleeping room and 1 bathroom) in EnergyPlus. Each room has 1 window and the windows and doors are identical for both constructions. The house is quite small (320 square foot) and there are various heat gains such as people and home appliances(Laptop, electric cooker, TV, washing machine, etc.). There is no shading or natural ventilation simulated. and the location is in the climate zone 3B-dry.

The construction with lower u-value has lower required heating energy that totally makes sense.

But the construction with lower U-value has higher required cooling energy than the other one. How can this be justified? Can it be due to the gained energy produced by the home appliances? or windows?

With and without simulating natural ventilation, the results are same.

I have rechecked the simulation various times and there seems to be no problem. Are these results justifiable? I appreciate any hint!

With Thanks a lot in advance!

Dear All,

I have simulated two types of construction for a one-story house (1 living room, 1 sleeping room and 1 bathroom) in EnergyPlus. Each room has 1 window and the windows and doors are identical for both constructions. The house is quite small (320 square foot) and foot), there are various heat gains such as people and home appliances(Laptop, electric cooker, TV, washing machine, etc.). There is no shading for windows and the location is in the climate zone 3B-dry.

The construction with lower u-value has lower required heating energy that totally makes sense.

But the construction with lower U-value has higher required cooling energy than the other one. How can this be justified? Can it be due to the gained energy produced by the home appliances? or windows?

With and without simulating natural ventilation, ventilation and internal gains (home appliances) the results are same.

I have rechecked the simulation various times and there seems to be no problem. Are these results justifiable? I appreciate any hint!

With Thanks a lot in advance!

Dear All,

I have simulated two types of construction for a one-story house (1 living room, 1 sleeping room and 1 bathroom) in EnergyPlus. Each room has 1 window and the windows and doors are identical for both constructions. The house is quite small (320 square foot), there is no shading for windows and the location is in the climate zone 3B-dry.

The construction with lower u-value has lower required heating energy that totally makes sense.

sense. But the this construction with lower U-value has higher required cooling energy than the other one. How can this be justified?

With and without simulating considering natural ventilation and internal gains (home appliances) the results are same. The construction with lower u-value, has lower required heating energy, but higher required cooling energy.

I have rechecked the simulation various times and there seems to be no problem. Are these results justifiable? I appreciate any hint!

With Thanks a lot in advance!

Dear All,

I have simulated two types of construction for a one-story house (1 living room, 1 sleeping room and 1 bathroom) in EnergyPlus. Each room has 1 window and the windows and doors are identical for both constructions. The house is quite small (320 square foot), there is no shading for windows and the location is in the climate zone 3B-dry.

The construction with lower u-value has lower required heating energy that totally makes sense. But this construction has higher required cooling energy than the other one. How can this be justified?

With and without considering natural ventilation and internal gains (home appliances) the results are same. The construction with lower u-value, has lower required heating energy, but higher required cooling energy.

I have rechecked the simulation various times and there seems to be no problem. Are these results justifiable? I appreciate any hint!

Thanks a lot in advance!

Dear All,

I have simulated two types of construction for a one-story house (1 living room, 1 sleeping room and 1 bathroom) in EnergyPlus. Each room has 1 window and the windows and doors are identical for both constructions. The house is quite small (320 square foot), there is no shading for windows and the location is in the climate zone 3B-dry.

The construction with lower u-value has lower required heating energy that totally makes sense. But this construction has higher required cooling energy than the other one. How can this be justified?

With and without considering natural ventilation and internal gains (home appliances) the results are same. The construction with lower u-value, has lower required heating energy, but higher required cooling energy.

I have rechecked the simulation various times and there seems to be no problem. Are these results justifiable? I appreciate any hint!

Thanks a lot in advance!