Why should I hire a professional to measure airflow?
The basic condition for the proper functioning of any ventilation system for controlled ventilation of the living space is the correct adjustment of volume flows (also called flow), i.e. regulation of the amount of air that can flow through the air openings of the ventilation device. Measuring air flow is a job for experts who not only carry appropriate (and calibrated) measuring devices, but also have proven knowledge of statutory standards and technical specifications. Tech-savvy homeowners may be tempted to borrow measuring devices and do the calculations themselves, but the time required is often not commensurate with the result.
What should be paid attention to when measuring air flow?
Air flow measurement is an important detail for the proper functioning of ventilation systems. The ventilation system extracts air from the living space (used air in the room) and transfers fresh outside air into the room. In order for this principle of air supply and removal (with or without heat recovery) to work well, a uniform volume flow is necessary, i.e. optimal air exchange must be ensured. If, from a hygienic point of view, it is necessary to ensure sufficient air exchange in the room, the air exchange rate must be determined according to the recommended values u200bu200band the volume flow on the supply and exhaust air elements of the ventilation system must be measured. It should be noted that due to the friction of the air flow on the passages, different flow velocities occur, so different measurement results can be expected depending on the position. Measuring the sound pressure (using a sound meter) is usually also useful, as an incorrectly installed ventilation system or excessively high air flow can lead to significant noise (especially in bedrooms). Depending on whether it is a central system or a decentralized system (mainly designed to supplement air conditioning) with several independent ventilation devices, inspection during maintenance is more or less time-consuming.
Why is air flow measurement necessary?
If you hire an air flow measurement company, you will receive a cost estimate for the service to be performed and you can be sure that legal standards and individual framework conditions are included in the estimate. A heating and ventilation specialist has the necessary knowledge to quickly and cheaply perform measurements and, if necessary, will provide you with the documentation (measurement protocol) required for regular maintenance of central systems. The differential pressure measurement method must usually be performed by an expert in the field.
What preparations need to be made for air flow measurement?
Air flow measurement If the volumetric flow measurement is performed using a mobile flow measuring device (anemometer), it is necessary to follow the description and instructions for the device and, if necessary, install the software on the computer. In order to perform an airtightness test on new buildings (differential pressure measurement method, ventilation door test) to check the airtightness of the building envelope (e.g. a family house), extensive preparations are required on the building (closing and sealing of all building openings, installation of the measuring unit including the fan Calculation of volume flow and leakage to determine air flow is performed by a technician in accordance with legal standards for differential pressure methods.
What material do you need to measure air flow?
Depending on the project, air flow measurement requires calibrated measuring devices, which are commercially available in specialized shops. For the differential pressure measurement process, a measuring unit with a fan and materials for sealing the openings of buildings is also required. This procedure is usually carried out during construction (as well as another time after the completion of construction works) for new buildings or facilities for renovation, at the request of the client and exclusively by specialists.
