Guidelines for the measurement of air flow rate with anemometer in animal houses with continuous mechanical ventilation

Introduction

The air flow measurement of an animal housing is often representative of the air quality which is one of the animals physiological needs. Ventilation rate is a need due for its purpose of temperature control and gas evacuation such as ammonia or carbon dioxide. With an aim of obtaining the most precise as possible measurement it is necessary to take account of the following factors:

• Measurements taken at the aspiration of the ventilators
• Measurements taken in the first third of the sheath of air extraction, if possible in a secction where the flow without disturbance is worth approximately ten times the diameter
• Weak and regular outside wind

Then the flow is deduced from the formula Q = V*A where:

Q: flow in cubic meters of humid air per hour

V: average speed of air in meters per hour

A: section of ventilation duct or the conduit in square meters

Equipment

• Hot-wire anemometer
• Drill and bit
• Marker
• Adhesive tape
• Meter

Guideline details

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