Knowledge Base AutoCAD
Analyzing Buildings
Get information about the demands analysis of a building with LINEAR Building. The demands analysis includes the calculation of the heat load, the cooling load and the determination of the required air volumes.
Heat Load
Select a calculation method for the calculation of the heat load according to the location and requirements of your project.
Heat load calculation according to ISSO 51 (2023) and 53 (2018)
Explains the concept of heat load calculation according to the Dutch standards ISSO 51 and ISSO 53 (2018).
About the Transmission
Explains the concept of transmission at room level, in relation to the heat load calculation.
Setting Time Constant for Building Unit Individually
Shows step-by-step how to set the time constant per building unit.

New Features
Learn about new features in LINEAR software.
System Requirements
Learn more about the system requirements for using the LINEAR solutions.
Supported Norms and Standards
Learn which norms and standards support the LINEAR Solutions modules.
LINEAR Installation and Administration
Learn how to install, your LINEAR software, license and keep it up to date.
Getting Started
Get basic information about the structure, function and interaction of the LINEAR Solutions programs in AutoCAD and LINEAR Building.
Preparing and Editing Buildings and Architecture
Learn how to prepare drawings provided by an architect to create an architecture for building analysis.
Analyzing Buildings
Get information about the demands analysis of a building with LINEAR Building. The demands analysis includes the calculation of the heat load, the cooling load and the determination of the required air volumes.
- About Building Detection from an Excel Room Data Sheet
  Explains the concept of using room data sheet-based workflows in early planning phases.
- About Building Detection From A CAD Program
  Explains the concept of building detection in LINEAR Building from a connected CAD program.
- Preparing Building in LINEAR Building
  Learn how to create a building structure manually in LINEAR Building.
- Room Data Sheet
  Explains the concept of the Room Data Sheet module.
- Heat Load
  Select a calculation method for the calculation of the heat load according to the location and requirements of your project.
  - Heat Load Calculation Based on EN 12831-1 (2017)
    Explains the concept of heat load calculation based on EN 12831-1 (2017).
  - Heat Load Calculation Based on EN 12831 (2003)
    Explains the concept of heat load calculation based on EN 12831 (2003).
  - Heat load calculation according to ISSO 51 (2023) and 53 (2018)
    Explains the concept of heat load calculation according to the Dutch standards ISSO 51 and ISSO 53 (2018).
    - About Room Overview
      Explains the concept of the room overview in the heat load calculation.
    - About General Heat Load Data
      Explains the concept of general heat load data in the context of heat load calculations.
    - About Component Values
      Explains the concept of component values.
    - About the Transmission
      Explains the concept of transmission at room level, in relation to the heat load calculation.
      - Defining Rooms as Unheated
        Shows step-by-step how to define a room in your project as unheated.
      - Editing Room Temperature
        Shows step-by-step how to set or modify the room temperature.
      - Creating New Room Component
        Shows step by step how to create a new component in the room.
      - Defining a Room Component as Heated
        Shows step by step how to define a room component as heated.
      - Assigning Adjoining Room to Room Components
        Shows step by step how to assign a room adjoining section to a Room component corridor.
      - Setting Summand f1 or the Adjoining Temperature
        Shows step by step set the adjoining temperature or the summand f1 in rooms.
      - Details on "Transmission"
        Information on the Transmission section at room level.
      - Setting Building Unit Data
        Shows step-by-step how to set fundamental building unit data.
      - Setting Time Constant for Building Unit Individually
        Shows step-by-step how to set the time constant per building unit.
      - Setting Minimum Temperature of the Building Unit
        Shows step-by-step how to set the minimum temperature for the unheated condition in a building unit.
      - Details on "General Building Unit Data"
        Information about the section General Building Unit Data on the tab Heat Load on the building unit level in the calculation method ISSO 51 (2023) and 53 (2018).
      - Details on General Ventilation Zone Data
        Information on the General Ventilation Zone Data section of the Heat Load module at ventilation zone level.
      - Search and Replace Component Data
        Shows step-by-step, how to search and replace component data.
    - About Ventilation Data
      Explains the concept Ventilation data in relation to the heat load calculation.
    - About the Intermittent Heating Operation
      Explains the concept of intermittent heating operation at room level in connection with the heat load calculation.
  - Heat Load Calculation according to SN SIA 384/2(2020)
    Explains the concept of heat load calculation based on SN SIA 384/2:2020.
  - Heat load calculation according to DS 418(2020)
    Explains the concept of heat load calculation according to the danish standard DS 418.
  - Heat load calculation according to SP 60.13330.2016
    Explains the concept of heat load calculation based on SP 60.13330.2016.
  - Approximate Heat Load
    Explains the concept of approximate heat load calculation by means of quick entry.
- Cooling Load Short Procedure
  Learn how to calculate a cooling load for your building based on the short procedure of VDI 2078 (1996), section 6.
- Cooling Load, dynamic
  Select a method for determining the cooling load to suit the location and requirements of your project.
- Ventilation
  Explains the concept of determining air volumes for residential and non-residential buildings.
Dimensioning Components
Learn how radiators, convectors, panel heating/cooling systems and concrete core activation systems and components of ventilation systems are designed based on the requirement analysis in LINEAR Building.
Create Pipe Run Scheme
Learn how to create pipe run schemes for pipe networks in LINEAR Building.
Calculate Pipe Run Schemes
Learn how to calculate pipe run schemes in LINEAR Building.
Inserting Components
Learn how to transfer radiators or chilled beams to a LINEAR Building connected CAD platform and insert symbols and components from the libraries into CAD.
Drawing Networks
Learn how to draw pipe and duct networks, connect components, generate schemes, and create slots and openings.
Calculating Networks
Learn how to calculate pipe and duct networks.
Labeling and Dimensiong
Learn how to label components and sections in your drawing and how to dimension your drawing.
Output
Get basic information on creating output with AutoCAD, output in LINEAR Building and on the print mask editor.

Setting Time Constant for Building Unit Individually

Shows step-by-step how to set the time constant per building unit.

Before you begin

You would like to assign individual time constants to individual building units.

Navigate to

Module overview ➤ Heat load ➤ Building unit level ➤ Heat load ➤ General building unit data

Procedure

Open the drop-down list under Temperature correction through time constant and select the building mass for this building unit.
Select the Free presetting entry if you would like to enter a manual value.
Select the Proportion of mechanical ventilation from the drop-down list.

Results

The time constant for this building unit is set.

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Setting Time Constant for Building Unit Individually

Before you begin

Navigate to

Procedure

Results