IES-VE User Forum

Hi Selcuk,

I just spotted this and it probably isn't posted in the best category but will respond here so we have it.

The options in this drodpown will be Absolute profiles so you have to create those on your project Profiles Database as weekly or annual and to set 10 then reference a daily that is an Abs with constant value of 10 (or whatever you want to et as your ground temp).

Have a look at Ergon if you want to make this even more dynamic and varying: http://www.iesve.com/software/cloud-solutions/ergon

Phil

Hi,

I'm working on a project in which I have ground contact walls. I set, on Apache constructions, the ground-contact floorplans, as well as applied the adjustment to the a specific wall material to change its U-value.

On "Edit multiple adjacencies" I kept the default adjacent condition, which is "Outside air" and when I checked the results I realized that there is solar incident flux on this wall defined as ground-contact, which is a weird result.

Then I changed the adjacent condition to "temperature to profile" and I set that to 50F(estimated ground temperature), keeping the wall set as ground-contact wall on Apache constructions. I checked the results and considering this approach, I haven't checked solar incident flux. My doubt is, considering this approach, am I double inputting the boundaries to model this wall?

Does anyone know which would be the correct approach to model this type of construction?

Thank you.

Hi,

This the correct approach and when you apply the adjacent condition this is how you tell Apache it is ground contact and so no incident solar radiation is calculated for such a surface.

The condition specifies the temperature on the other side of the wall which you want to be ground temp and not outside air as it will vary far less with climate. The construction adjustment is improving the model by having some representation of the adjacent soil include din the mass and makeup of the construction so the adjacency is better defined, if should be modelled this way in addition to specifying the ground temp which will propagate into the soil layer and any additional insulation you on ground contact walls and floors.

Phil

Thankk for the answer!