DELPHIN 6 – Bauklimatik Dresden

Fields of application of DELPHIN

Detailed calculation of thermal bridges

Detailed calculation and dimensioning of interior insulation

Modelling of ventilated facades and roofs and moisture loads

Assessment of moisture damages in constructions and at surfaces

Evaluation of ground collectors and probes

For use in planning/engineering practice

Thermal bridge calculation with assessment of hygric problem areas (surface condensate, internal condensate)
Dimensioning and evaluation of interior insulation systems
Assessment of ventilated facades, ventilated roofs
Transient calculation of the year-round heating energy requirement (taking into account the moisture-dependent thermal conductivities)
Drying (basement, building moisture, flood, …)
Calculation of mold growth criteria
… and other applications

Diverse climate and boundary conditions

Rising damp with height-dependent pressure
Climate database included
Inclusion of various types of radiation (e.g. long- and short-wave, diffuse/direct etc.), driving rain or air pressure possible
Use of any (own) climate
Import of climate formats possible: TRY, IWEC, TMY2, WAC/HRY
Locally very finely resolved assignment of climate possible, e.g. in joints
Import of climate data from our own room climate calculations (Software Therakles)
Definition of only temporary influences (climate or accident) possible
Gravity can be taken into account
Cooling of surfaces by runoff rain

Extensive material databases

Use for geothermal design

Simulation of near-surface geothermal energy: geothermal collectors and geothermal probes
Consideration of heat and moisture transport in the soil as well as ice formation, groundwater flow, ambient climate and precipitation.
2D and 3D geometry as well as any arrangement possible (multi-layer collector, installation under buildings, geothermal probe fields)
Database with all 34 soil types according to KA5 or DIN 4220 and detailed parameters (moisture-dependent thermal conductivity, suction stress curve and liquid water conductivity)
Pipe flow model for calculation of fluid temperature in geothermal collectors and borehole heat exchangers

Detailed problem considerations

Definition of any initial conditions
Arrangement of time-dependent moisture and heat sources in constructions, e.g. due to accidents)
Very flexible creation and assignment of result outputs (monitor points)
Modeling of wall or floor heating or ceiling cooling possible
Inclusion of pipe flows
Arrangement of air exchange rates in air-filled cavities of the construction
Definition of contact conditions in the construction (liquid water resistance or vapor transport resistance)
Consideration of external long-term storage
Long-wave radiation exchange in cavities
Air flow model included
Ingress of moisture through leaks in wooden structures based on WTA leaflet 6-2
Regulation of the water balance in flat roofs
Inclusion of PCM materials (currently in progress)

Large selection of outputs and visualizations

Very flexible, versatile creation of diagrams and 2D and 3D images
Very large range of result outputs: temperature, humidity, water quantities, water content in vol%, m% etc., degree of saturation, ice formation, capillary pressure, over-hygroscopic humidity, sources of heat and moisture and much more
Calculation of freeze-thaw cycles
Calculation of mold growth according to the VTT model (Viitanen)
Calculation of wood destruction according to the VTT model (Viitanen)
Calculation of wood degradation by fungi according to WTA leaflet 6-8
Output of energy, moisture (vapor and liquid water) and air flows
Isopleth systems with regard to mold and wood degradation
Laminar air flow in areas of the construction

More functions

One, two and rotationally symmetrical three-dimensional (DELPHIN 5) or fully three-dimensional calculations (DELPHIN 6)
Several calculations can run simultaneously
Scripting possible by creating “batch” files
Automatic or manual discretization possible
Consideration of VOC transport possible
Any start time can be specified
Project files editable with text editor

How to cite DELPHIN

For citing DELPHIN, the following APA-style reference can be used:
Bauklimatik Dresden Software GmbH. (2025). DELPHIN (6.1.7) [Software].
https://bauklimatik-dresden.de/software/delphin/