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I'm attempting to calibrate my model of a simple single-storey residential fibro home with measured indoor temperatures and have been stuck for a while trying to get them close to matching.

I'm experiencing these crazy spikes where some days it peaks to 40°C, which is unrealistic. The measured performance is horrible and may be lucky to be 5°C higher than the outdoor temperature. There is no HVAC in the whole house. I've tried making variations of the occupancy and activity schedules, but I still get the same results.

Has anyone dealt with this before and has solutions for this?

Here is a graph of the measured indoor temperature and a photo of the simulated indoor temperature with the simulated outdoor temperature.

C:\fakepath\99b6d96145adb59f68a18b904faae724.png

C:\fakepath\Screenshot 2025-08-12 123724.png

I've only shown one zone in the screenshot as that was the same place where the indoor temperature was taken.

• George

I'm attempting to calibrate my model of a simple single-storey residential fibro home with measured indoor temperatures and have been stuck for a while trying to get them close to matching.

I'm experiencing these crazy spikes where some days it peaks to 40°C, which is unrealistic. The measured performance is horrible and may be lucky to be 5°C higher than the outdoor temperature. There is no HVAC in the whole house. I've tried making variations of the occupancy and activity schedules, but I still get the same results.

Has anyone dealt with this before and has solutions for this?

Here is a graph of the measured indoor temperature and a photo of the simulated indoor temperature with the simulated outdoor temperature.

C:\fakepath\99b6d96145adb59f68a18b904faae724.png

C:\fakepath\Screenshot 2025-08-12 123724.png

I've only shown one zone in the screenshot as that was the same place where the indoor temperature was taken.

• George

I'm attempting to calibrate my model of a simple single-storey residential fibro home with measured indoor temperatures and have been stuck for a while trying to get them close to matching.

I'm experiencing these crazy spikes where some days it peaks to 40°C, which is unrealistic. The measured performance is horrible and may be lucky to be 5°C higher than the outdoor temperature. There is no HVAC in the whole house. I've tried making variations of the occupancy and activity schedules, but I still get the same results.

Has anyone dealt with this before and has solutions for this?

Here is a graph of the measured indoor temperature and a photo of the simulated indoor temperature with the simulated outdoor temperature.

I've only shown one zone in the screenshot as that was the same place where the indoor temperature was taken.

• George