Knowledge Base Revit
Analyzing Buildings
Get information about the requirements analysis of a building. The demand analysis includes the calculation of the heat load, the cooling load and the ventilation concept.
Heat Load
Select a calculation basis 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).
About the Intermittent Heating Operation
Explains the concept of intermittent heating operation at room level in connection with the heat load calculation.
Setting the Time Constant Individually
Shows step-by-step how to manually set the time constant for your project.

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 Revit and LINEAR Building.
Preparing Building
Learn how architects prepare plans and models to create a building model for building analysis.
Pre-Concept Design
Learn how to collaboratively localize and dimension equipment rooms and how to create pipeline corridor concepts.
Analyzing Buildings
Get information about the requirements analysis of a building. The demand analysis includes the calculation of the heat load, the cooling load and the ventilation concept.
- Heat Load
  Select a calculation basis 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).
    - About Building Detection
      Explains the building detection concept in relation to 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.
    - 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.
      - Considering Intermittent Heating Operation
        Shows step-by-step how to include interruptedly or rarely heated rooms in the heat load calculation and how to make settings for them.
      - Setting the Time Constant Individually
        Shows step-by-step how to manually set the time constant for your project.
      - Details on Intermittent Heating Operation
        Information about Intermittent heating operation section.
      - Details on Intermittent Heating Operation
        Information on the Intermittent heating operation section in the Heat load tab of the building unit or room level.
  - 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 and 53(2018)
    Explains the concept of heat load calculation according to the Dutch standards ISSO 51 and ISSO 53 (2018).
  - 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 acc. 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.
Dimensioning Components
Learn how to dimension radiators, convectors, panel heating and concrete core activation systems on the basis of the requirements analysis in LINEAR Building and manufacturer-specific.
Inserting Components
Learn how to insert components from the LINEAR CAD Browser, from the libraries and configurators of the library tab or from LINEAR Building into the model.
Constructing Networks
Learn how to create pipe and duct networks, design slots and openings and manage discipline-related reports and tasks.
Calculating Networks
Learn how to calculate pipe and duct networks.
Construction Design
Get information about the workflow Construction design in connection with pipe and duct networks.
Labeling
Learn how to label section parts and components in the model.
Output
Get information about material compilation in LINEAR Building. You will also learn how to print or export calculation results and material lists in your CAD program.
Troubleshooting
Get information about possible sources of errors when working with LINEAR Solutions.

Setting the Time Constant Individually

Shows step-by-step how to manually set the time constant for your project.

Before you begin

You would like to set the time constant for your project manually.

Navigate to:

Module overview ➤ Heat load ➤ Project level ➤ Heat load ➤ Intermittent heating operation

Procedure

Activate in the area Default values the option Use.
Enter the Coefficient transmission heat loss for your building.
Enter the net building volume for your building.

The proposed value was transferred during building detection and does not have to be adjusted.

Results

The manually entered values are taken into account for the calculation of the time constant of the project.

Name	Purpose	Lifetime	Type	Provider
CookieConsent	Saves your consent to using cookies.	1 year	HTML	Website
fe_typo_user	Assigns your browser to a session on the server.	session	HTTP	Website

Name	Purpose	Lifetime	Type	Provider
_ga	Used to distinguish users.	2 years	HTML	Google
_gat	Used to throttle request rate.	1 day	HTML	Google
_gid	Used to distinguish users.	1 day	HTML	Google
_ga_QTGLMF6700	Google Analytics cookie to throttle the request rate.	2 years	HTML	Google
_gcl_au	Used by Google AdSense to experiment with advertisement efficiency.	3 months	HTML	Google
_clck	Persists the Clarity User ID and preferences, unique to that site, on the browser. This ensures that behavior in subsequent visits to the same site will be attributed to the same user ID.	1 years	HTML	Microsoft
_clsk	Connects multiple page views by a user into a single Clarity session recording.	366 day	HTML	Microsoft
_uetsid	This is a tracking cookie used by Microsoft Bing Ads. It allows us to target a user who has visited our website before.	1 day	HTML	Microsoft
_uetvid	Used to track visitors across multiple websites to present relevant advertising based on the visitor's preferences.	390 day	HTML	Microsoft
ln_or	Registers statistical data on users’ behaviour on the website. Used for internal anyalyzes by the website operator.	1 day	HTML	LinkedIn

LINEAR FOR AUTODESK REVIT

LINEAR FOR AUTODESK AUTOCAD

Setting the Time Constant Individually

Before you begin

Navigate to:

Procedure

Results