Category
|
Displays the surface category. Category is a read
only property.
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Sub type
|
Used to view or change the surface Sub type from
Partition to another wall sub-type. The Sub type drop-down list is filtered and
contains only partition and wall sub types.
|
Name
|
Used to enter a name for the partition. The name
entered here appears appended to the partition object on the Energy Simulator Project
Tree dialog box.
|
Construction
|
Used to view of change the partition
material construction
definition.
|
Dimensions
|
Displays overall dimensions of the selected
partition.
- Length — Displays
the length (horizontal distance) of the partition shape element when viewed
from a point normal to it.
- Width — Disabled for
the partition sub-type.
- Height — Displays
the height (vertical distance) of the partition shape element when viewed from
a point normal to it.
- Area — Displays the
total area of the selected partition.
- Volume — Disabled
for the partition sub-type.
- Orientation —
Displays the orientation of the partition relative to the building orientation.
Building orientation is defined in the
Properties
For: Building
dialog.
|
Heatflow
|
Contains controls used to view and set Heatflow
data for the partition. Heatflow refers to the energy transfer occurring
through a surface’s material construction. Heatflow is established
automatically as rooms are created. Energy Simulator determines if the adjacent space to
the room wall is in contact with another room. If an adjacent room is found
next the wall, the surface is defined as being of the surface sub-type
partition.
- Type — Used to
display and modify the nature of the heatflow occurring through the partition.
|
Common
|
Displays common construction details for all surface
sub-types. Common construction details are read only properties.
- Category — Displays
the construction category associated with the surface.
- Total thickness —
Displays the surface total thickness which included all the material layers
(solids and air gaps) that make up the construction.
- Decrement factor
(internal) — Displays a Decrement factor associated with the construction’s
inside surface. The Decrement factor is used to calculated the amount a thermal
wave is decreased in intensity during its propagation process from the outside
to the inside of the surface construction.
- Decrement factor
(external) — Displays a Decrement factor associated with the construction’s
exterior surface. The Decrement factor is used to calculated the amount a
thermal wave is decreased in intensity during its propagation process from the
outside to the inside of the surface construction.
- Fixed thermal
properties — Used to display the surface construction setting related to its
thermal properties which are defined in the Materials
Manager dialog box. When on, calculated surface emissivity and absorption
coefficients are overridden, enabling you to define your own thermal properties
(in the Materials Manager dialog box). When off, the
calculated transmission values are used.
- Admittance
(internal) — Displays the amount of heat that passes through a unit area of the
constructions’s inside surface, when its external face is subject to a unit
temperature change.
- Admittance
(external) — Displays the amount of heat that passes through a unit area of the
constructions’s external surface, when its inside face is subject to a unit
temperature change.
- Time lag (internal)
— Displays the time it takes for heat generated by the sun to transfer from the
outside, through the construction, to the inside surface of the construction
into the building envelope, and affect the internal conditions.
- Time lag (external)
— Displays the time it takes for heat lost to transfer from the inside, through
the construction, to the external surface of the construction from the building
envelope.
- Weight (internal) —
Displays the construction inside surface’s weight per unit area.
- Weight (external) —
Displays the construction external surface’s weight per unit area.
|
Internal surface
|
Contains controls used to display thermal transfer
properties for internal surface types such as the partition. Internal surface
construction details are read only properties. Internal surface construction
details are defined using the controls in
Materials
Manager
.
- Surface emissivity
— Displays the construction surface emissivity factor. Surface emissivity is a
measure of the efficiency in which a surface emits thermal energy. It is
defined as the fraction of energy being emitted relative to that emitted by a
thermally black surface (a black body). A black body is a material that is a
perfect emitter of heat energy and has an emissivity value of 1. A material
with an emissivity value of 0 would be considered a perfect thermal mirror.
- Absorption
coefficient — Displays the absorption coefficient for the construction's
external surface. The absorption coefficient is a number between 0 and 1. The
lower a construction's external surface solar absorption coefficient, the less
solar heat it transmits.
- Upward-U-Value —
Displays the calculated outside surface U-value or thermal transmittance of
energy traveling upward through the selected construction.
- Downward-U-Value —
Displays the calculated outside surface U-value or thermal transmittance of
energy traveling downward through the selected construction.
- Horizontal-U-Value —
Displays the calculated outside surface U-value or thermal transmittance of
energy traveling horizontally through the selected construction.
|
Layers
|
Contains controls used to display the surface’s
construction material layers in a read only table. The table displays thermal
properties for each layer such as the thickness, density, conductivity,
specific heat and vapor resistivity.
|