Ventilation Calculation

Ventilation Calculation

Air Exchange

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Calculation Methodology:

Ventilation calculation by air exchange rate

L = n * S * N, where:

L — required performance m3/h;

n — air exchange rate;

S — room area;

N — room height, m.

Ventilation performance calculation by number of people

L = N * Lnorm, where:

L — performance m3/h;

N — number of people in the room;

Lnorm — standard air consumption per person:

at rest — 20 m3/h;

for office work — 40 m3/h;

for active work — 60 m3/h.

Information

Calculating ventilation is a responsible and detailed task that requires consideration of a large number of indicators. To simplify the calculation, a parameter called "air exchange rate" is used. This parameter indicates the number of air mass exchanges per unit of time (usually per hour). Special attention is given to the purposes of room operation. This determines whether the number of exchanges per unit of time or the air exchange rate (considering volume) will be taken into account.

The air temperature during the cold season is also taken into account to compensate for the reduced air humidity using the heating system. There are quite a few types of ventilation (natural, supply, exhaust, mechanical, etc.), and each has its nuances in calculation. In general, the calculation process is detailed and quite challenging. Research by specialists in this field has shown that it is important to start the calculation by selecting equipment that meets the required air volume values, and only then consider the air exchange rate. When determining the exchange rate, building codes and standards are usually referenced.

The design of air exchange begins with a technical calculation, which can be divided into five main points:

  1. Determining the performance of the ventilation system.
  2. Identifying acceptable noise parameters and the electrical capability of the object.
  3. Aerodynamic calculation to determine resistance force (selection of sizes and diameters of ducts).
  4. Calculating the thermal power of the heater.
  5. Selecting ventilation equipment (fans, heater, noise suppressors, etc.) according to noise protection rules, resistance level, air exchange volume, and required heating of the air supply.

We have developed an online calculator that allows you to calculate natural ventilation and any other ventilation system in just a few simple steps. You only need to enter the initial data, and the calculation will be performed instantly. Our calculator incorporates numerous formulas that allow accurate ventilation calculations, whether supply or exhaust. Since room ventilation is a very important aspect of construction, thorough ventilation calculation is carried out for a private house.

What benefits does our calculator provide you?

  • Automated formulas completely eliminate the possibility of errors in calculations
  • You won't spend much time calculating such an important parameter as ventilation
  • Our interface is designed so that even an inexperienced user can understand it
  • You have the opportunity to calculate any type of ventilation for any room

Thus, it can be concluded that our calculator allows for precise and rapid calculation. Even if it is a calculation for an industrial facility, our calculator will handle the task at the highest level of quality. Using our tool, you can calculate the air volume and the area of rooms, which will help in designing an efficient ventilation system. It is also important to consider the utilization factor of the ventilation equipment and the system's power for optimal operation.

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