How to calculate ventilation for an apartment?

Calculate ventilation for each room separately: bedroom, living room, kitchen, bathroom. For living rooms, the frequency is 1 time/hour, for the kitchen 3 times/hour, for the bathroom 3 times/hour. Sum up the performance of all rooms. Example: apartment 60 m², height 2.7 m → total volume 162 m³, required productivity ~200 m³/h for the entire apartment.

How to calculate ventilation performance?

Productivity = Room volume × Air change rate or Number of people × Norm per person. The maximum value is taken. Example: room 4×5×2.7 m = 54 m³, frequency 1 time/hour → productivity 54 m³/hour. If there are 2 people in the room, 30 m³/h → 60 m³/h, take 60 m³/h.

What is the air exchange rate for the kitchen?

For the kitchen, the air exchange rate is 3 times/hour for general ventilation and an additional hood above the stove with a capacity of at least 90 m³/h (for a gas stove) or 60 m³/h (for an electric one) is required. The hood operates independently of general ventilation.

How to calculate ventilation for an office?

For an office, the air exchange rate is 2 times/hour, the air norm per person is 40 m³/hour. Calculate: office volume × 2 or number of employees × 40, take the maximum value. For an office for 20 people with an area of 100 m², height 3 m → volume 300 m³, volume 600 m³/h, people 800 m³/h, required 800 m³/h.

How to calculate ventilation for a bathroom?

For the bathroom, the frequency is 3 times/hour, the norm per person is 25 m³/hour. Bathroom 2×2×2.5 m = 10 m³, capacity 10×3 = 30 m³/h. Exhaust ventilation is required, supply ventilation is not necessary (air comes from other rooms). An exhaust fan with a timer is recommended.

How to calculate natural ventilation?

Natural ventilation works due to differences in temperature and pressure. Performance calculations are complex and depend on many factors. Typically, natural ventilation provides 0.5-1 times/hour of air exchange. For an accurate calculation, take into account the area of the ventilation ducts, temperature differences, and wind direction.

How to calculate mechanical ventilation?

Mechanical ventilation is calculated as volume × rate or people × rate. The fan performance must correspond to the calculated one. Example: room 50 m³, frequency 3 times/h → a fan with a capacity of 150 m³/h is needed. Take into account losses in air ducts (10-20%), add a reserve.

How to calculate supply and exhaust ventilation?

Supply and exhaust ventilation must be balanced: supply ≈ exhaust. Calculate the required capacity. Supply ventilation: 100% of required. Exhaust: 90-100% of the supply. Example: 100 m³/h required → supply 100 m³/h, exhaust 90-100 m³/h. A slight imbalance (5-10%) is allowed to prevent drafts.

How to calculate ventilation for a restaurant?

For a restaurant, the frequency is 5 times/hour, the norm per person is 60 m³/hour. Hall 10×12×3.5 m = 420 m³, volume 420×5 = 2100 m³/h. With 50 visitors: 50×60 = 3000 m³/h. Required: 3000 m³/h. Powerful supply and exhaust ventilation is required to remove odors from the kitchen and living room, and additionally an exhaust hood above the kitchen equipment.

How to calculate ventilation for a gym?

For the gym, the frequency is 4 times/hour, the norm per person is 80 m³/hour. Gym 8×10×4 m = 320 m³, volume 320×4 = 1280 m³/h. With 15 trainees: 15×80 = 1200 m³/h. Required: 1280 m³/h. Intensive ventilation is necessary to remove carbon dioxide, moisture and excess heat. A mechanical supply and exhaust system is recommended.

How to calculate ventilation for a production facility?

For industrial premises, the frequency is 3-6 times/hour, depending on the type of production and harmfulness. Calculate by volume and add removal of local hazards. Example: workshop 20×15×4 m = 1200 m³, multiplicity 4 times/h → 4800 m³/h. Consider local suction from equipment. For hazardous industries, the frequency can be up to 10-20 times/hour.

How to calculate air exchange in a room?

Air exchange = Ventilation capacity / Room volume. Example: capacity 100 m³/h, volume 50 m³ → air exchange 100/50 = 2 times/h. The air exchange rate shows how many times per hour the air in the room is completely replaced. The norm for living rooms: 1 time/hour, for the kitchen: 3 times/hour, for the bathroom: 3 times/hour.

How to calculate fan performance?

The fan performance must correspond to the required ventilation performance, taking into account losses in the air ducts. Required performance × (1 + losses). Losses in air ducts are usually 10-20%. Example: 100 m³/h required, 15% loss → fan should be 100×1.15 = 115 m³/h. Choose a fan with a performance slightly higher than the calculated one.

How to calculate ventilation for a children's room?

For a children's room, the frequency is 1 time/hour, the norm for a child is 30 m³/hour. Children's room 3×4×2.7 m = 32.4 m³, productivity 32.4×1 = 32.4 m³/h. For one child: 1×30 = 30 m³/h. Required: 32.4 m³/h. Supply and exhaust ventilation with filtration is recommended to ensure clean air.

How to calculate ventilation for a bedroom?

For a bedroom, the frequency is 1 time/hour, the norm per person is 30 m³/hour. Bedroom 4×5×2.7 m = 54 m³, productivity 54×1 = 54 m³/h. For two people: 2×30 = 60 m³/h. Required: 60 m³/h. For the bedroom, natural ventilation or a quiet mechanical supply and exhaust system is sufficient. Quiet fan operation is important.

How to calculate ventilation for a living room?

For the living room, the frequency is 1 time/hour, the norm per person is 30 m³/hour. Living room 6×8×2.7 m = 129.6 m³, productivity 130×1 = 130 m³/h. For 4-5 people: 5×30 = 150 m³/h. Required: 150 m³/h. For a large living room, mechanical ventilation is recommended to ensure a comfortable microclimate.

How to calculate ventilation for a kitchen with a gas stove?

For a kitchen with a gas stove, an exhaust hood with a capacity of at least 90 m³/h above the stove is required. General kitchen ventilation: volume × 3 times/hour. Example: kitchen 3×4×2.7 m = 32.4 m³, total ventilation 32.4×3 = 97.2 m³/h, hood above the stove 90 m³/h. The hood works independently and turns on when cooking.

How to calculate ventilation for a kitchen with an electric stove?

For a kitchen with an electric stove, the hood must have a capacity of at least 60 m³/h. General ventilation: volume × 3 times/hour. Kitchen 3×4×2.7 m = 32.4 m³, total ventilation 97.2 m³/h, exhaust 60 m³/h. An electric stove emits fewer harmful substances, so the hood may be of lower power.

How to calculate ventilation for a bathroom?

For a bathroom (bathtub + toilet) the frequency is 3 times/hour, the norm per person is 25 m³/hour. Bathroom 2×2×2.5 m = 10 m³, capacity 10×3 = 30 m³/h. Exhaust ventilation is required; supply ventilation is not required (air comes from other rooms through the cracks under the door). An exhaust fan with a humidity sensor is recommended.

How to calculate ventilation for an office building?

For an office building, each room is calculated separately, then summed up. Office: frequency 2 times/hour, norm 40 m³/hour per person. A multi-storey office building requires a centralized supply and exhaust system with heat recovery. Central system capacity = sum of all rooms. Consider losses in main air ducts.

How to calculate ventilation for a store?

For a store, the frequency depends on the type: food 2-3 times/hour, non-food 1-2 times/hour. The norm per visitor is 40-60 m³/h depending on the area. Trading area 100 m², height 3 m = 300 m³, multiplicity 2 times/hour → 600 m³/hour. With 30 visitors: 30×50 = 1500 m³/h. Required: 1500 m³/h. Supply and exhaust ventilation with recovery is required.

How to calculate ventilation for a warehouse?

For a warehouse, the frequency is 1 time/hour for ordinary warehouses, 2-3 times/hour for warehouses with chemicals. Warehouse 20×30×5 m = 3000 m³, frequency 1 time/hour → 3000 m³/hour. For ordinary warehouses, natural ventilation through gates and windows is sufficient. Warehouses containing hazardous substances require mechanical supply and exhaust ventilation.

How to calculate ventilation for a cafe?

For a cafe, the frequency is 5 times/hour, the norm per visitor is 60 m³/hour. Cafe hall 8×10×3 m = 240 m³, volume 240×5 = 1200 m³/h. With 30 visitors: 30×60 = 1800 m³/h. Required: 1800 m³/h. Powerful supply and exhaust ventilation is required to remove odors and excess heat. Additionally, there is a hood above the kitchen equipment.

How to calculate ventilation for a sauna?

For a sauna, the frequency is 5-10 times/hour for the steam room, 3-5 times/hour for the dressing room. Steam room 2×2×2.2 m = 8.8 m³, multiplicity 7 times/hour → 61.6 m³/hour. Exhaust ventilation is required to remove moisture and carbon dioxide. Supply ventilation should supply a small amount of air (10-20% of the exhaust) to prevent drafts.

How to calculate ventilation for a bathhouse?

For a steam bath: frequency 5-10 times/hour, washing: 3-5 times/hour. Steam room 3×4×2.2 m = 26.4 m³, multiplicity 7 times/h → 185 m³/h. Washing room 3×3×2.5 m = 22.5 m³, multiplicity 4 times/h → 90 m³/h. Powerful exhaust ventilation is required to remove moisture. Use fans with moisture protection (IP65).

How to calculate ventilation for a swimming pool?

For a swimming pool, the frequency is 3-5 times/hour, the norm is 80 m³/hour per visitor. Pool 10×20×3 m = 600 m³, multiplicity 4 times/hour → 2400 m³/hour. With 10 visitors: 10×80 = 800 m³/h. Required: 2400 m³/h. Supply and exhaust ventilation with air dehumidification is required to remove excess moisture. Specialized equipment for swimming pools is used.

How to calculate ventilation for a production workshop?

For a production workshop, the frequency is 3-10 times/hour, depending on the harmfulness of production. Workshop 30×20×6 m = 3600 m³, multiplicity 4 times/hour → 14400 m³/hour. For hazardous industries, the frequency can be up to 20 times/hour. Consider local suction from equipment. The design of specialized ventilation systems is required.

How to calculate ventilation for a laboratory?

For a laboratory, the frequency is 4-6 times/hour, the norm is 40-60 m³/hour per worker. Laboratory 5×6×2.8 m = 84 m³, multiplicity 5 times/h → 420 m³/h. With 3 workers: 3×50 = 150 m³/h. Required: 420 m³/h. Supply and exhaust ventilation with filtration and local suction from fume hoods are required. The air should not be recirculated.

How to calculate ventilation for a classroom?

For a classroom, the frequency is 2 times/hour, the norm is 40 m³/hour per student. Class 8×6×3 m = 144 m³, multiplicity 2 times/h → 288 m³/h. With 25 students: 25×40 = 1000 m³/h. Required: 1000 m³/h. Mechanical supply and exhaust ventilation is required to provide fresh air and comfortable learning conditions.

How to calculate ventilation for a cinema hall?

For a cinema hall, the frequency is 4-5 times/hour, the norm is 40 m³/hour per viewer. Hall 15×20×4 m = 1200 m³, multiplicity 4 times/hour → 4800 m³/hour. With 100 spectators: 100×40 = 4000 m³/h. Required: 4800 m³/h. Powerful supply and exhaust ventilation is required to remove carbon dioxide, moisture and ensure the comfort of spectators.

How to calculate ventilation for a basement?

For the basement, the frequency is 1-2 times/hour, depending on the purpose. Basement 10×8×2.5 m = 200 m³, frequency 1.5 times/h → 300 m³/h. Exhaust ventilation is important for the basement to remove moisture and prevent dampness. Supply ventilation can be natural through special channels.

How to calculate ventilation for an attic?

For the attic, the frequency is 0.5-1 times/hour. The attic is usually ventilated naturally through dormers and vents. The volume of the attic is large, so even a small multiplicity gives greater productivity. Attic 15×10×3 m = 450 m³, frequency 0.5 times/h → 225 m³/h. It is important to provide a draft to remove moisture.

How to calculate ventilation for a garage?

For the garage, the frequency is 2-4 times/hour, depending on use. Garage 6×4×2.5 m = 60 m³, multiplicity 3 times/h → 180 m³/h. For a garage with the engine running, the frequency must be at least 4 times/hour. Exhaust ventilation is required to remove exhaust gases. Supply ventilation is natural through the gate.

How to calculate ventilation for a laundry room?

For laundry, frequency 5-7 times/hour to remove moisture. Laundry 4×5×2.8 m = 56 m³, frequency 6 times/hour → 336 m³/hour. Powerful exhaust ventilation is required to remove excess moisture. Supply ventilation should supply heated air to prevent condensation. Fans with moisture protection are used.

How to calculate ventilation for a server room?

For a server, the frequency is 3-5 times/hour, the norm is 80-100 m³/hour per 1 kW of equipment. Server room 4×5×3 m = 60 m³, multiplicity 4 times/h → 240 m³/h. With 10 kW equipment: 10×90 = 900 m³/h. Required: 900 m³/h. Supply and exhaust ventilation with air conditioning is required to remove excess heat from the servers.

How to calculate ventilation for a boiler room?

For a boiler room, the frequency is 3 times/hour, additional combustion air is required (for gas boilers 1 m³ of air per 1 kW of power). Boiler room 5×4×3 m = 60 m³, frequency 3 times/h → 180 m³/h. A 24 kW boiler requires an additional 24 m³/h of combustion air. Required: 204 m³/h. Supply ventilation is required to supply combustion air.

Calculator #1

One site. All calculators.

Ventilation calculator

Calculation of ventilation performance for premises

м³/ч

Units of measurement

99%

Accuracy of calculations

Types of premises