4.4.1. General data of partition<br>

### 4.4.1. General data of partition

In this place a partition will be edited, that means data of this partition are entered and/or changed. Moving to window of partition edition can be realized:

- in tree of defined partitions. In case of defining of a new partition by clicking the icon „Add a partition definition” or selecting this command in handy menu or by using the key „Open menu” or by means of key F7. For already defined partitions by their selection – clicking the left mouse button on selected one.

- in partitions table by double clicking the left mouse button or using the key Enter on selected partition.

In general data the User can select the method of partition defining. On this selection depends the type and amount of fields to be completed by the User.

To define a partition with enforced heat transfer coefficient „U” it is necessary to select the field „Partition with enforced U” and enter the value of “U” (or “R”) coefficient in field “Uo”. For such defined partitions the User should complete by himself individual fields listed below.

This way will also be defined windows and doors of a building. To make the work with program more effective, it is recommended to enter here also dimensions of windows and doors, because these dimensions are automatically called by entering of partition name. Height and width of windows and doors should be entered according to outer dimensions of frames (according to norms).

To define a homogeneous partition with known construction it is necessary to select in field “Partition defining method” an option “Partition with defined layers”. For such partition select a type and complete the table of building materials layers.

To define an inhomogeneous partition just define the repeatable homogeneous elements. These elements can be declared as laminar or with enforced “U” coefficient. Using these repeatable homogeneous elements define an inhomogeneous partition. Select option “Inhomogeneous partition” and in table elements of inhomogeneous partition. It is now necessary to determine a percentage share of length of homogeneous element in inhomogeneous and repeatable partition unit.

The edition window is divided into two principal parts:

- upper part containing general data of partition,

- lower part containing table of partition layers.

General data of partition includes:

Compartment name – to be completed by the User, if the names pattern of partition definition names has not been declared. It is recommended to enter names as short symbolic description, for example "RO" – for Roof and detailed description of compartment can be placed in field “Description”.

Description – the User can complete the name with a comment, for example wooden Internal floor.

Method of partition defining – selection field of following possibilities of partition defining:

- partition with enforced U,

- partition with defined layers,

- inhomogeneous partition,

Partition type – to be selected from a pop-up list:

- EW – external wall,

- IW – internal wall,

- EF – floor over carport,

- RO – roof,

- IF – internal floor,

- FL – floor on ground,

- WG – wall near ground,

- EWi – external window,

- IWi – internal window,

- ED – external door,

- ID – internal door.

Heat flow direction

Completed automatically by the program for partitions with constant heat flow, for example for external walls, floor on the ground. For internal partition, such as windows, doors, for which the heat flow direction depends on their usage in building structure, the User will declare it by himself depending on their presence in the building. For internal ceiling will be calculated the value of heat transfer coefficient U for heat flow upwards and downwards. The User does not have to double declare the internal ceiling for opposite senses of heat flow.

Rsi – heat transfer resistance on the surface of internal partition

Completed automatically by the program according to norms on the basis of selected partition type and according to heat flow direction.

Rse – heat transfer resistance on the surface of external partition

Completed automatically by the program according to norms on the basis of selected partition type and according to heat flow direction.

Uo – heat transfer coefficient

For a laminar partition this field is calculated by the program. For partition with enforced “U” coefficient it should be completed by the User.

DU0 – a normative addition to heat transfer coefficient Uo

This field is used for entering of corrections to heat transfer coefficient Uo. Corrections should be applied according to normative data because of:

- leakages in insulation layer,

- mechanical connectors piercing the insulation layer,

- precipitations on the roof with reverse layers layout.

Sd – partition thickness

For a laminar partition the value is calculated by the program. For a partition with enforced „U” coefficient it must be completed by the User. Fields visible for all partitions.

C/A – heat capacity of partition related to 1m2 of partition surface

This quantity defines amount of heat camouflaged in partition by change of internal temperature in sinusoidal function in range of ± 1K, in given time interval. Its calculation or entering by the User enables calculation of time constant of building/compartment and as a result calculations of additional thermal power. Additional thermal power results from the need of supplying of additional heat amount in case of not stationary heating. Calculation method of effective partition layer thickness, for which the “C/A” value is calculated, has been described in APPENDIX B. APPLIED NORMS AND CALCULATION METHODS

If the calculation option of seasonal energy demand and temporary temperature reduction in compartments has been selected, it is only necessary to complete data concerning partition thickness and thermal capacity “C/A” only once.

hx – external height (length) of partition

Field to be completed individually by the User (optionally),

wx – external width of partition

Field to be completed individually by the User, (optionally),

Ax – external partition surface

Fields calculated automatically by the Program on the basis of completed partition dimensions or for edition by the User, if the horizontal (vertical) dimensions of partition surface have not been defined, (optionally)

! After completion of partition dimensions in this place of program, the User does not have to declare dimensions in compartment edition window. Nevertheless such defined partitions can be edited only in project position “Partitions definitions”. For this reason it is recommended to define here dimensions of these partitions, the length and width of which are constant within the precincts of entire building.

Depending on the selection of calculation option of heat loss to the ground – detailed or simplified method for partitions type: floor on the ground and wall at the ground, additional fields are still to be completed.

Selecting the method of heat loss calculation to the ground by means of detailed method it is necessary to complete bigger amount of data which have been described below.

Following types of floors on the ground can appear in a project, which can be then defined by the User by means of types of additional insulation in field „Type of additional floor insulation”. Such types are:

- plate on the ground – a floor of type “plate on the ground” refers to each floor being in direct contact with the ground on its entire surface, independent on the fact, whether it is founded upon the ground on its entire surface. Such floor can be:

· non-insulated – type of additional insulation „None”; in layers table not entered any insulation layer,

· uniformly insulated on entire surface – type of additional information „None”; in layers table the insulation layer entered above, underneath or inside of plate,

· additionally insulated on edges – type of additional insulation „Horizontally/Vertically” independent on the fact, whether the floor is uniformly insulated on entire surface or is not insulated at all.

- elevated floor – this is a construction of floor, where the floor is located in a certain distance from the ground, and as a result between this floor and the ground there is an air gap. Type of additional insulation “Elevated”,

- underground – concerns floors located underneath the ground level. Type of additional insulation “None”, completed field concerning floor pit underneath the ground level.

For walls at the ground – SG

Heat resistance of underground walls – Rsp

Value completed automatically by the program on the basis of data from partitions data table for laminar partition. For partitions with enforced heat resistance it must be completed by the User.

For floors on the ground– PG (generally)

Floor resistance „Rf”

Value completed automatically by the program on the basis of data from partitions table for a laminar partition. For partitions with enforced heat resistance it must be completed by the User.

Type of additional floor insulation – type of additional floor insulation selected from a pop-up list:

- None – refers to a case, in which the floor surface is not additionally insulated on edges. This floor can be insulated on its entire surface or can be non-insulated. If the User will complete the field concerning the floor pit, it will mean that he has declared in this way an underground.

- Elevated – refers to such floor construction, where the floor is located in some distance to the ground. Such created space under the floor can be ventilated or on-ventilated. This concerns for example a wooden floor or closely-ribbed ceiling.

- Horizontal – refers to floors of type „plate on the ground”, having an edge insulation located horizontal on the circumference of the floor.

- Vertical – refers to floors of type „plate on the ground”, having an edge insulation located vertical on the circumference of the floor.

For floors on the ground

If the User wants to enter a floor on the ground without additional edge insulation, he should just select from a pop-up list the type of additional insulation “None”.

The User can define it in partitions table as uniformly insulated or as non-insulated on its entire surface by entering (or adequately non-entering) of insulation layer from a materials list.

For floors on the ground sunk under the ground level

If the User wants to enter a floor, which is sunk under the ground level, he should select a type of additional insulation “None” and complete the value of field “z”:

z – Depth of lower floor

Concerns these buildings, in which a part of operational space is located under the ground level. The User can enter here depth of underground floor under the ground level. If “z” changes on circumference of the building, the average value should be taken for calculations. The underground floor can be non-insulated or insulated and the User will enter the floor insulation layer during defining of material layers in partitions table located below.

If the User will enter in field „z” the value „0” it means, that this is a floor of type „plate on the ground”.

For floors on the ground with additional horizontal/vertical insulation

If the User wants to enter a floor of type „plate on the ground” additionally insulated, he should select from a pop-up list in field „Type of additional floor insulation” – „horizontal/vertical”.

BI – Width (height) of additional insulation

The User will complete it always by himself depending on the height (width) of used insulation,

Rinsl – Resistance of additional insulation

Value completed automatically by the Program according to data from the partitions table for laminar partition. For partitions with enforced heat resistance is to be completed by the User.

dinsl – Thickness of additional insulation

Value completed automatically by the Program according to data from the partitions table for laminar partition. For partitions with enforced heat resistance is to be completed by the User.

For floors on the ground with elevated floor construction

If the User wants to define the floor with elevated construction as a laminar partition, he must separate in partition table the layers of elevated floor from layers of sub-floor by means of aerial layer selected from material list. The aerial layer is an under-floor space. Declaring of this space as a ventilated one can be done by filling in of field “A” – „Surface of openings per floor circumference unit”. The User can also enforce this construction filling in by himself the fields listed below.

Rf– Floor resistance

Heat resistance of elevated part of floor. For laminar partition this field is calculated by the program. For partitions with enforced heat resistance it must be entered by the User.

Rsf – Sub-floor insulation resistance

Heat resistance of all sub-floor layers – located under elevated part of floor, not including the aerial space. The program treats all layers of sub-floor as its insulation from the ground.

A – Surface of openings per floor circumference unit

Field completed by the User according to construction of elevated floor. If the sub-floor space is not ventilated, its value is equal to 0.

dpp – sub-floor thickness

Thickness of floor layers located underneath the sub-floor space. Value completed by the program automatically on the basis of data from partitions table for a laminar partition. For partitions with enforced heat resistance it is to be completed by the User.

h – Height of upper edge of floor surface over external ground level

Determines height of floor location over external ground level. The User should complete it by himself depending on building location.

For calculations of heat losses by means of simplified method, there are less data to be completed. For floors on the ground of elevated construction it is only necessary to select the field „Elevated floor“.

For external windows/doors

gw – Coefficient of energy permeability through window pane

Program takes into consideration the permeability of total solar radiation determined for case of solar radiation perpendicular to glazing. Typical total permeability of solar energy for mostly used types of glazing is: for a standard window pane, single glazing gw = 0,85, double glazing gw = 0,75. For other glazing types the certified values should be applied.

Usz – Participation of window pane surface in window/door surface

To be completed by the User depending on partition type – window/door and their construction.