Heating Load Calculation and Heating Surface Design

Simply by selecting the rooms in the drawing, Dendrit STUDIO automatically incorporates them into the heating load calculation along with their assigned component data and assigns them to adjacent rooms based on their adjoining temperatures. When selecting rooms, the gross dimensions of the rooms are taken into account, using half or full wall thicknesses.

Similarly, ceiling, floor, and roof components are automatically generated based on these. If room layouts are identical, you can copy them across floors using either the same or modified component data. You can quickly make adjustments to component data – such as changing a stored U-value – by selecting individual components or a group of components in the drawing. When you resave the drawing, the system automatically synchronizes it with the technical data in the heating load calculation.

Roof structures, including dormers, are modeled based on the roof plan view in the floor plan. The ridge and eave heights, as well as the slope, are specified using input fields. The heights of the gable ends and wall surfaces adjacent to roof components are automatically calculated based on the roof geometry specifications. You can also easily define roof shapes with an attic by using a function to create the intersection line with the floor below.

The 3D view allows you to check the current status of the project. It displays the current status of the selected project. In addition, various display functions allow you to compare the selected components with the technical data in the heating load calculation.

In the heating load calculation, the technical data is clearly presented along with additional diagrams that graphically illustrate the distribution of heat losses, and can be printed out for documentation purposes. Using the EnEV interface, you can also transfer data from the heating load calculation (U-values, floor specifications, and room data including areas) to the energy consultant Hottgenroth.

Benefits at a Glance:

• U-Value Calculation According to DIN EN ISO 6946
• Heating load calculation in accordance with DIN EN 12831-1, including the German supplementary sheet DIN/TS 12831-1
• Graphical capture of floor plans, including roof shapes and 3D views
• Tabular Summary of the Heating Load
• EnEV Interface to Energy Consultant Hottgenroth

For radiator design, the radiator data sets are imported via the VDI Manager (VDI 3805, Sheet 6). Additional design parameters – such as the specified height or niche dimensions – can be defined to ensure that only a specific selection of radiators from the data set is considered for the design.

For heating surface design, you can choose from TECE manufacturer systems and a neutral selection of pipe series. Surface design can be performed for both floor and wall circuits. Specifications for bifilar or meandering pipe routing, as well as consideration of the edge zone, can also be defined. For the design scenario, you can also determine the corresponding cooling capacity (passive cooling) of the surface heating system.

You have the option to use the quick design feature to design heating layouts for individual rooms or for multiple rooms. The design can be done using radiators, underfloor heating, wall heating, or a combination of these. Using preset parameters, you can also include adjacent rooms in the heating/cooling design and account for unheated areas such as kitchen islands and other built-in elements.

You can design radiators based on either the heating load or comfort levels in accordance with VDI 6030 Part 1. Dendrit STUDIO provides functions to determine the flow temperature for radiators and surface circuits. For surface heating circuits, determining the maximum flow temperature ensures that the most unfavorable circuit, as defined by DIN EN 1264, is designed with a temperature spread of no more than five Kelvin. Similarly, the “Determination of Flow Temperature According to VDI 6030 for Radiator Design” function allows you to perform this calculation based on exterior window specifications or existing design parameters.

The heating surface design data is displayed in a clear, tabular format. For documentation purposes, you can print out the heating surface design as well as the detailed list of materials in the material specification.

Benefits at a Glance:

• Heating surface design is possible with or without a heating load calculation
• Importing Radiator Data Records via the VDI 3805 Manager, Sheet 6
• Single-Pipe/Two-Pipe Heating Surface Design – DIN 4703-3
• Surface Heating and Surface Cooling Systems DIN EN 1264
• Inventory of Radiators and Floor/Wall Heating Systems
• Quick design by floor, by room, and based on the number and size of windows
• Optional floor and wall heating, also for passive cooling
• Combined Heating Surface Design
• Optimizing the Flow Temperature for Heating Surfaces in Existing and New Buildings
• Comfort Levels According to VDI 6030, Part 1
• Intelligent transfer of heat from the heating surfaces to the heating pipe network