Albert,
Thermal mass is definitely considered by Type56. Sometimes highly thermally massive walls cause problems for the algorithm that computes the transfer functions for the walls and one of the workarounds that people use is to define the wall as having an R-value only (i.e. no thermal mass). If you had to make that simplification for your rammed earth walls it would explain why you are not seeing the impact of the thermal mass. It also occurs to me that if the time delay caused by the thermal mass is almost but not quite 24 hours then it could look as though the lag was negative.
kind regards,
David
Hello,
I am doing a comparison between a conventional building and another with the external walls made of rammed earth, which has a big thermal mass. I have simulated both of the with the Type56 in Simulation Studio and I have obtained this results. I do not know why but the decrement factor is the same for both constructions and the thermal lag is negative. I have simulated it during summer and during winter time and also I haven't considered ventilation or any time of heating or cooling. I have already seen some emails in your webpage from people asking if the thermal mass is considered in the type56.Thank you,
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