Hi,
I'm trying to calculate the thermal admittance of a building model. Having not used some of the IES software fully I am not aware that IES can carry out this calculation,can anyone enlighten me? Or is thier a way to take of the areas of the models components ie external wall areas, internal wall areas etc, thus enabling me to carry out the calculation the old fashioned way.
Thanks in advance.
Mark
thermal admittance
Re: thermal admittance
Hi,
You can get the Admittance from your building materials in the Construction Database, for any Construction in use in the project change the u-value method to CIBSE then click on Derived Parameters to see the Admittance and associated time lead as calculated using CIBSE Admittance methodology.
The CIBSE admittance of the construction, which relates inside surface heat transfer to inside environmental temperature can be found in CIBSE Guide A (2006) Appendix 3.A6: Calculation method for admittance, decrement factor and surface factor.
In terms of extracting model geometry information from your project I would look at the new Model Geometry tabular room data that is available in ModelIT as VE 2013 onwards and also the model check report in ModelIT can output model geometry information (in ModelIT Settings menu >> Model..., tick relevant checkbox options and then click Check button).
We are looking at a small development project to provide a simple report that fully reflects the model geometry settings in a way that can be manipulated and used for different reporting and other calculations as required by different users all over the world, if you have specific model geometry data that you often find you want to extract but can't find then please add a list of this to the Suggestions section of this forum or else email feedback@iesve.com and we will try to incorporate as many of your wishes as possible.
Phil
You can get the Admittance from your building materials in the Construction Database, for any Construction in use in the project change the u-value method to CIBSE then click on Derived Parameters to see the Admittance and associated time lead as calculated using CIBSE Admittance methodology.
The CIBSE admittance of the construction, which relates inside surface heat transfer to inside environmental temperature can be found in CIBSE Guide A (2006) Appendix 3.A6: Calculation method for admittance, decrement factor and surface factor.
In terms of extracting model geometry information from your project I would look at the new Model Geometry tabular room data that is available in ModelIT as VE 2013 onwards and also the model check report in ModelIT can output model geometry information (in ModelIT Settings menu >> Model..., tick relevant checkbox options and then click Check button).
We are looking at a small development project to provide a simple report that fully reflects the model geometry settings in a way that can be manipulated and used for different reporting and other calculations as required by different users all over the world, if you have specific model geometry data that you often find you want to extract but can't find then please add a list of this to the Suggestions section of this forum or else email feedback@iesve.com and we will try to incorporate as many of your wishes as possible.
Phil
IES Worldwide Technical Support