Hi All,
I am working on a large warehouse building with a small office building on the site.
The warehouse is heated only, so I suppose that is semiheated space, is that right?
While the office building is conditioned by VRF system.
Here is the question, when I import the Ashrae Baseline Constructions, I am confused which building type I should choose, semiheated or non-residential? Should it based on the dominant space?
If I select the non-residential type, the proposed heating demands are much higher than the baseline case.
If I select the semiheated type, IES told me that 'Failed to import the following baseline constructions to the project - Above Grade Wall'.
Could anybody give me some advice? Many thanks in advance!!!
Si
Cory Duggin
Senior Energy WizardTLC Engineering Solutions
53 thumbs up
July 18, 2016 - 10:28 am
First you need to check whether your space is a heated space or a semiheated space based on the definitions. See Table 3.1 for heated space thresholds per climate zone. If it turns out that your space is classified as heated, then it is considered to be a conditioned space. You will only need the conditioned space baseline constructions then. If you do have a semiheated space, then you will need both sets of constructions.
Alice chen
July 19, 2016 - 5:09 am
Hi Cory,
Many thanks for your advice!
According to Table 3.1, the warehouse is semiheated and office is conditioned. So I suppose I need to import two sets of baseline constructions, i.e. semiheated and non-residential, is that right?
Then I came across another problem, IES did not allow me to import the baseline constructions for semiheated type. There is an error showing 'Failed to import the following baseline constructions to the project: - Above Grade Wall'. Have you had such a problem before? I have no idea how to solve it...Thanks.
Cory Duggin
Senior Energy WizardTLC Engineering Solutions
53 thumbs up
July 19, 2016 - 11:27 am
I tested importing the semi-heated constructions in a test VE2016 project, and it worked without an error. You could check with IES support or just use the ASHRAE construction wizard to import the appropriate ones since you will have to manually assign them to the right surfaces in the baseline.
Alice chen
July 19, 2016 - 12:43 pm
Hi Cory,
Many thanks for your reply.
I also tried it in IES 2016, but still failed. But I successfully imported the external wall with Metal building. It seems that it works well except stell-framed...I do not know why....
Then I assigned the semiheated construction to the warehouse and non-resi to the office. Unfortunately, there is another error when I ran room loads calculations. It shows that 'there is instability in room xxx'. I checked the model, and there is no errors. Have you had such problems before? May I ask for your advice? Thanks a lot!!