DeepLoop Designer — Free 3D Barn Design and Ventilation Sizing
DeepLoop Designer is a browser tool that lets you lay out a pig or poultry house in 3D and get its ventilation, heating, cooling and equipment list dimensioned from proven physics, measured fan test data and the real climate of the site you build on.
Draw the house, set species, stocking and target climate, pick the site on a map — the engine returns air requirement, fan banks, inlets, tunnel speed, pad cooling, heating load and emergency ventilation, with a bill of materials and a PDF you can hand to a contractor.
It is free to use. No licence fee, no per-seat pricing, no quote request — create an account and start designing.
The whole house, in 3D
Build the shell, sections, pens or cages, inlets, fans, chimneys and pad walls in the browser. What you draw is what gets dimensioned — geometry, cross-section and maximum tunnel width are checked against the same standards, so an unworkable layout is flagged while you are still drawing it.
Real climate for your actual site
Pick your city and the engine loads its own climate profile: design heating and cooling dry-bulb temperatures, average wet-bulb, sun hours and a full temperature-duration curve. 31,942 cities across 243 countries from GeoNames plus NASA POWER, and 337 Chinese cities with prebaked duration data.
- Source
- Design temperatures and temperature-duration curves
- NASA POWER climate records with the GeoNames city gazetteer — 243 countries
Real fan data from BESS Lab
Fans come from 1,051 independent test reports (984 at 60 Hz, 67 at 50 Hz) published by the BESS Lab at the University of Illinois, covering 70+ manufacturers. Capacity is read from the measured pressure–airflow curve at your design static pressure — not from a catalogue headline number measured at zero pressure.
- Source
- Fan capacity at design static pressure
- BESS Lab, University of Illinois — 1,051 published fan test reports, 70+ makes
Published physics, not rules of thumb
Sizing runs a full heat, moisture and CO2 balance on published animal-science and psychrometric data. Bird heat follows the Strøm/Feenstra curve Φ = k·√m, with CIGR 2002 (Working Group on Climatization of Animal Houses) selectable as the alternative coefficient. Moist-air properties use standard ASHRAE psychrometrics. Every result was checked against reference dimensioning reports at 0.01–0.03 % median error.
- Source
- Animal heat and moisture production
- Strøm/Feenstra Φ = k·√m (default); CIGR 2002, Working Group on Climatization of Animal Houses (selectable)
- Psychrometrics — enthalpy, humidity ratio, wet-bulb
- Standard ASHRAE moist-air equations, Magnus-Tetens saturation vapour pressure
Bill of materials and PDF export
Every design produces an itemised equipment list and a printable report — fan models and counts, inlet area, heating capacity, cooling pads, emergency ventilation — that a supplier or installer can quote from directly.
Pigs and poultry
Weaner, finisher, farrowing, gestation, gilt, boar and mating rooms, plus broilers and broilers in cage — each with its own heat and moisture production, so the same house geometry sizes differently for the animals you actually put in it.
Where the numbers come from — every source is public
| Input | Source |
|---|---|
| Animal heat and moisture production | Strøm/Feenstra Φ = k·√m (default); CIGR 2002, Working Group on Climatization of Animal Houses (selectable) |
| Psychrometrics — enthalpy, humidity ratio, wet-bulb | Standard ASHRAE moist-air equations, Magnus-Tetens saturation vapour pressure |
| Fan capacity at design static pressure | BESS Lab, University of Illinois — 1,051 published fan test reports, 70+ makes |
| Design temperatures and temperature-duration curves | NASA POWER climate records with the GeoNames city gazetteer — 243 countries |
| Price of using it | Free |
Is DeepLoop Designer really free?
Yes. Designing, dimensioning, exporting the bill of materials and the PDF are all free. You only need an account so your designs are saved and can be shared.
Are the sources public?
Yes. The heat-production curves (Strøm/Feenstra, CIGR 2002), the ASHRAE psychrometric relations, the BESS Lab fan test reports, NASA POWER climate records and the GeoNames gazetteer are all published, independently checkable data. Nothing in the sizing rests on a number you cannot look up yourself.
Why does measured fan data matter?
A fan's catalogue airflow is usually quoted at zero static pressure. A real house runs at 10–40 Pa, where the same fan moves far less air. Reading the measured BESS Lab curve at your design pressure is the difference between a house that holds its target temperature in summer and one that does not.
Which climate data is used?
Each city carries design heating and cooling dry-bulb temperatures, average wet-bulb, average daily sun hours and a temperature-duration curve derived from multi-year NASA POWER records, so cooling is sized against how often it is actually hot at your site — not against a single worst-case number.
Do I need to be a ventilation engineer to use it?
No. You draw the house and state the animals, target temperature and site. The engine applies the standards and warns you when a choice breaks one — for example when tunnel air speed, inlet area or house width falls outside the validated range.
How does it relate to DeepLoop OS?
Designer is where the house is planned; DeepLoop OS is what runs and watches it afterwards with camera-based AI monitoring and climate control. The two share the same model of the house, so a design carries straight into operation.