Ventilation and condensation control in a dairy farm

Case study: Ventilation solution for condensation control in a dairy farm

In the dairy industry, controlling humidity in spinning departments is a common challenge. Production processes release large amounts of water vapor, which saturates the air and condenses on the cold ceiling, posing a risk to the product. We solved this problem by eliminating recurring drips.

The problem

In spinning departments, steam generated by production processes quickly saturates the ambient air. This creates a temperature difference between the humid air and the cold ceiling, causing condensation that drips directly onto the products being processed. The result is a risk of mold and bacteria, machine downtime for extraordinary cleaning, and HACCP compliance issues. In spaces measuring 400-600 m³ without adequate ventilation, relative humidity exceeds 85% during peak production. This compromises product quality and operational continuity, with hidden costs for sanitation and production losses.

Analysis of the problem

We inspected a laboratory with continuous steam production and insufficient natural ventilation. The saturated air forms humid layers at the top, and even a small drop in temperature (5-10°C) is enough to cause the steam to condense on the ceiling.

Main causes:
Stratification of warm, humid air at the top.
No forced airflow.

The solution with our products

We designed a simple yet effective system that combines air circulation with direct extraction to the outside, using only hygienic materials certified for the food industry. To eliminate condensation in the spinning department, we installed ACF18 INOX circulators from Termotecnica Pericoli and a group of MZ Aspiratori axial extractors along the perimeter of the production area. The circulators keep the air in constant motion, mixing hot steam with drier air and preventing stratification. The extractors, on the other hand, direct humid air outside, ensuring constant and uniform air exchange throughout the room. This configuration creates a balanced and stable airflow, preventing humidity buildup and keeping surfaces dry.

Technical specifications of the components

ACF18 INOX – Termotecnica Pericoli
18″ cylindrical circulator (fan diameter: ~768 mm)
Satin-finish AISI 304 stainless steel frame with aerodynamic Peraluman impeller
3-phase IE3 400V motor, power 0.55–1.1 kW, IP55 protection rating
Maximum flow rate: 18,000 m³/h
Noise level: <70 dB Efficiency: >80%
Easy maintenance with automatic lubrication and front access with HACCP-compliant protective grilles

Axial extractors – MZ Aspiratori
Diameter 400–500 mm, ductable
Fixed axial impeller
Head: 200–300 Pa
Corrosion-resistant materials
IE3 three-phase motor (efficiency >75%)
Flow rate: 5,000–20,000 m³/h
Compatible with F4/F9 filters according to UNI EN 16798-3

Results and advantages

The system eliminates condensation thanks to a constant airflow, is 100% HACCP compliant, eliminates downtime for cleaning, and reduces consumption and microbiological risks, with minimal maintenance. It is scalable for curing or packaging departments and is the ideal standard for environments with high levels of steam.

Main regulations

– D.Lgs. 81/2008 (microclimate)
– Reg. CE 852/2004 (HACCP)
– Reg. CE 853/2004 (hygiene)

This case study demonstrates how proper humidity management and well-designed ventilation can transform a hygiene problem into a lasting operational advantage. Humidity management in production environments is never a secondary consideration, and designing the right ventilation system improves efficiency, hygiene, and the longevity of the equipment.