Hi Zhichen,
I think that two are the crytical point that you should check and they are:
1.
Influence of the window. In your experimental room there is a window if I am not wrong. Did you check in your
model if all the parameters of the window (g value, U value, shading control) are implemented correctly?
2.
As I understand in your model, you set the ground temperature to 5°C, correct? Why did you implemented like this?
I think that the real ground temperature under the room is pretty different and follows the behavior of the outside temperature in terms of annual oscillations and not a constant value….
Are my comments useful or did I not understand what/how you implemented everything in your model?
From: TRNSYS-users
<trnsys-users-bounces@lists.onebuilding.org> On Behalf Of ??? via TRNSYS-users
Sent: Thursday, July 15, 2021 5:32 AM
To: trnsys-users <trnsys-users@lists.onebuilding.org>
Cc: 大大宝 <805520662@qq.com>
Subject: [TRNSYS-users] indoor temperature is unstable
Dear TRNSYS users,
I am validating my model with a experimental room (room). The room has a floor heating system and I simulated the indoor temperature in the case of floor heating turning off.
I input the collected weather data(weather1.txt) into the simulation (room.b18 & room.tpf).
I compared my simulated indoor temperature with the measured one. I found that the simulated indoor temperature is unstable when the measured temperatures fluctuate similarly for each day (indoor temperature.png). I just don't known what
would contribute to this mismatch when they shared the same weather condition.
Have anyone faced this problem before? any ideas to figure out this mismatch?
I will very appreciate for any helps!
Regards,
Zhichen