How to Select Poultry House Ventilation
Key factors for airflow, cooling, heating, air inlets, fans, sensors and climate control in different regions.
The short answer
Select ventilation as a complete house system, not as a fan count. The designer needs flock information, building dimensions and local climate data to review airflow, inlets, cooling options, controls and emergency operation.
IXORTA prepares project-specific equipment configurations and export quotations from Türkiye. Use the checklist below to define your requirements; final specifications and scope belong in the written offer.
Prepare your enquiry
- House drawing and production system
- Site climate and design conditions
- Available electricity and backup arrangements
Send the machine type, required capacity, destination country or port, project timeline and technical requirements.
Technical quotationEngineering Airflow Calculations & Capacity Sizing
Poultry house climate control (klimaatbeheersing stal / تهوية حظائر الدواجن) must be engineered across three distinct operational regimes: minimum ventilation, transitional ventilation, and maximum tunnel cooling. Never specify ventilation by nominal fan count alone; verify the physical volumetric flow rates ($m^3/h$) under working static pressure ($\Delta P = 20 - 45\text{ Pa}$).
| Ventilation Stage | Target Velocity / Exchange Rate | Specific Airflow ($m^3/h\text{ per kg}$) | Primary Control Objective |
|---|---|---|---|
| Minimum Ventilation | House air exchange every 5–8 min | $0.10 - 0.20\text{ m}^3/h/\text{kg}$ | $CO_2 < 2,500\text{ ppm}$, $NH_3 < 15\text{ ppm}$, RH 50–65% moisture removal |
| Transitional Stage | Ridge & wall inlet air-mixing | $0.80 - 2.20\text{ m}^3/h/\text{kg}$ | Smooth transition without chilling birds; thermal equilibrium |
| Full Tunnel Ventilation | Air velocity $2.5 - 3.2\text{ m/s}$ at bird level | $5.00 - 7.50\text{ m}^3/h/\text{kg}$ | Wind-chill convective cooling; air exchange every 45–55 seconds |
For a standard commercial house ($120\text{ m} \times 16\text{ m} \times 3.2\text{ m}$ eave height), the total tunnel capacity required at bird level velocity $v = 2.8\text{ m/s}$ is calculated as:
$$Q_{\text{tunnel}} = A_{\text{cross}} \times v_{\text{target}} \times 3600 = (16\text{ m} \times 3.2\text{ m}) \times 2.8\text{ m/s} \times 3600 \approx 516,096\text{ m}^3/h$$
Factoring in a 10% system safety margin for pad static pressure drop ($\Delta P \approx 30\text{ Pa}$), the installation requires 14 $\times$ 50-inch IXORTA high-efficiency cone fans delivering $41,500\text{ m}^3/h$ each.
Exhaust Fans & Evaporative Cooling Pad Engineering
Aerodynamic efficiency and power factor determine the lifetime operational cost of a poultry facility. IXORTA manufactures heavy-duty galvanized and fiberglass exhaust fans matched with fluted cellulose cooling pads.
| Equipment Model | Blade Diameter / Dimensions | Motor Power & Drive | Airflow @ 0 Pa / 30 Pa | Recommended Application |
|---|---|---|---|---|
| IX-FAN-50C Cone Fan | $1270\text{ mm}$ (50") 6-blade Krupp SS | $1.1\text{ kW}$ / $1.5\text{ HP}$ (IE3 Direct/Belt) | $44,200\text{ m}^3/h$ / $38,800\text{ m}^3/h$ | Primary tunnel ventilation in broilers, layers & breeders |
| IX-FAN-36B Box Fan | $910\text{ mm}$ (36") 6-blade SS430 | $0.55\text{ kW}$ / $0.75\text{ HP}$ direct drive | $20,800\text{ m}^3/h$ / $17,500\text{ m}^3/h$ | Minimum winter ventilation, gable end exhaust |
| IX-PAD-7090 Cellulose | $150\text{ mm}$ thick $\times 600\text{ mm}$ wide | Submersible SS pump, 35 l/min | Face velocity $1.5\text{ m/s}$ ($\Delta P \le 22\text{ Pa}$) | Evaporative cooling with 82–88% saturation efficiency |
| IX-INLET-3000 Wall Air | $560 \times 270\text{ mm}$ UV-stabilized ABS | Dual return springs & winch cable | $2,800\text{ m}^3/h @ 20\text{ Pa}$ | Ceiling air jet throw during brooding & cold weather |
Climate Computer & Automation Architecture
Modern poultry automation (automatisering pluimveestal / اتوماسیون مرغداری) integrates 12-to-32 stage microclimate computers regulating variable speed fans (EC motors), actuated air inlets, cooling pumps, and supplemental heating units. The controller monitors indoor static pressure differential via silicone diaphragm sensors to maintain optimal jet throw distance toward the building ridge.
- Differential Pressure Regulation: Maintained between 15 Pa (summer tunnel) and 35 Pa (winter minimum) to prevent cold draft dumping onto young chicks.
- Dual Temperature-Humidity Index (THI): Dynamic calculation of bird sensible heat vs latent heat to prevent heat stress prostration.
- Fail-Safe Alarm & Emergency Drop System: Magnetic drop winches that mechanically open side curtain louvers during catastrophic power or generator failure.
Regional Climate Adaptations: Middle East, Europe & Central Asia
Climatic factors dictate equipment engineering across key global export markets:
Saudi Arabia, UAE, Iraq & Iran (Arid Hot Climates)
Summer ambient temperatures frequently exceed $48^\circ\text{C}$ with wet-bulb temperatures around $24-28^\circ\text{C}$. Requires high-efficiency 150mm evaporative cooling pads with bleed-off valves to handle water salinity ($TDS < 1,000\text{ ppm}$), reinforced fan motors with Class F insulation, and oversized tunnel capacities ($3.0 - 3.2\text{ m/s}$ air speed).
Netherlands, Germany, France & UK (Maritime / Cold Climates)
High relative humidity and strict emission standards require precision minimum ventilation (ventilator pluimveestal) with heat exchanger recovery units (HRV), tight building envelope sealing ($< 1.5\text{ m}^3/h/\text{m}^2 @ 50\text{ Pa}$), and variable speed EC fans to minimize winter heating fuel consumption.
Technical Data to Share for Quotation Engineering
- House dimensions ($L \times W \times H$) and bird population target (e.g. 35,000 broilers, 65,000 layers)
- Extreme summer high temperature & winter low temperature with relative humidity data
- Wall and ceiling insulation R-values (sandwich panel polyurethane thickness)
- Power supply characteristics ($380-415\text{V}, 3\text{-phase}, 50/60\text{ Hz}$) and generator backup capacity
- Water supply volume and quality for evaporative cooling pad lines
Submit your farm layout or technical query to our engineering team at info@ixorta.com or via WhatsApp at +90 551 280 32 99 for a free ventilation calculation and factory-direct commercial quotation.