Convective internal mass

Objects of the type "furniture" (how to insert them, see Insert object), are always edited in this form.

Field description, etc:

Area

Area per side (object is described as two-sided wall) [m2]. 

Construction

Approximate the object by wall-type construction.

Heat transfer coefficient

Convective heat transfer coefficient (no long-wave exchange is calculated) [W/(m2 K)].

This type of object is used to model internal masses that primarily interact with the zone air, and that are "seen" by the walls only to a minor extent. Examples could be store room shelves, furniture, plants, etc. These masses can have a relatively large influence on fast temperature variations but can normally be neglected in energy calculations.

The area should give an estimate of the total area exposed to the zone air. Note: All objects are treated as double sided, e.g. for a desk the top side area should be given. The construction specified should correspond to a section through the object and several material layers can be specified in the same way as for a wall.

If long-wave radiation exchange is to be taken into account (as in the case of interior walls or slabs, especially also when several rooms are modeled as one zone), they are considered as “Wall mass" (Both radative and convective internal mass).