Calculation of Ventilation for Industrial Buildings
Industrial ventilation systems are peculiar owing to the fact that they need to serve large facilities and process large volumes of air. In the course of manufacturing, toxic elements, hot steam and dust all end up in the air. The main task of the ventilation is to purify air rapidly and ensure stable environment in the facilities.
Criteria for Calculation of Ventilation for Industrial Buildings
To achieve standard characteristics of the environment, it is necessary to comply with the effective construction requirements, such as P-M.3 and P-L. 21-71, as well as with national standards.
Air circulation standards are regulated depending on the type and intended use of the facilities, production processes and the number of people therein. On average, there must be 5 to 100 air changes per hour (ACH). The standard of clean air inflow constitutes no less than 40-80 cubic meters per person.
When we perform calculation of ventilation for industrial buildings, we take into account all the equipment located in the facility. Temperature and humidity are calculated depending on the type of the technological process, regional climate, heat insulation class of the facility etc.
When we calculate ventilation for industrial buildings, the following data serve as the basis:
- The required productivity of the system, calculated per person per cubic meter
- The area of the ventilated facility in square meters and its height
Using these data, engineers select the optimum diameter and shape of air ducts, design a scheme of the air distributing network and calculate the required capacity. Other factors taken into account when designing industrial ventilation include the level of noise and the speed of air flow.
Ventilation of Industrial Systems with Increased Heat Emission
In industrial buildings with increased heat emission, ventilation maintains optimum environment consistent with technological and sanitary requirements. Furthermore, another important task of the ventilation system in such facilities is efficient removal of excessive masses of heated air. Therefore, such facilities make use of both general and local ventilation.
Ventilation of this type is often supplemented by waste heat exchangers, which enable conservation of about 80% of power on heating of supply air.
System of Industrial Ventilation for Buildings with Increased Dust Concentration
In the production process there are often problems with increased dust concentration. Therefore, in buildings where increased dust concentration is a problem, ventilation is supplied by aspiration equipment.
The peculiarity of solutions of this type is the greater angle of air ducts, which are laid to ensure the shortest possible length. Inflow ducts are supplied with protective shells, and they work at lower speeds to prevent dust from rising into the air.
Ventilation for Facilities with Emission of Gasses and Chemical Compounds
Air showers, local aspiration devices and emergency air extraction systems are obligatory elements of ventilation for facilities with emission of gasses and chemical compounds. They are required to remove harmful substances.
Showers ensure air supply directed at employees, while pumps remove harmful substances in locations where they are emitted. Emergency equipment is activated if the content of harmful substances exceeds the safe level.
Production and Installation of Ventilation Systems.
When you choose contractors for ventilation on your facility, make sure to pay attention to experience, available equipment, licenses and permits for design and installation. OLAND design and engineering group, which has been working in design, production and installation of utility networks since 2006, offers all of this to its clients.
You can commission installation of equipment based on your own drafts or turnkey installation of air ducts. The latter includes the full scope of works – from design of industrial ventilation to putting the network into operation.
Installation of air ducts and ventilation equipment includes several stages:
- Preparation of the construction part: making slots in walls and floors, installation of bases.
- Manufacturing and installation of air ducts and their elements (sections, shaped elements).
- Installation of foundations for ventilators and the equipment itself.
- Connection of air ducts and ventilators with the use of vibration absorbing flexible inserts.
- Electrical works (installation of control boxes and automatic controls, frequency converters, laying of power and control cables).
- Startup and commissioning, testing of the system’s functioning.
When installation works have been completed, our company issues technical documentation and a service warranty for the ventilation system.