Ventilation unit is a part of a system consisting of channels and air ducts, elements for supplying and exhausting air from rooms. The vocation of such units is to provide he althy living conditions in residential, industrial, administrative and other buildings.
Operation principle
The ventilation unit forcibly blows air into the room. In the process, the system simultaneously rids the space of dust and toxins, and also heats it to a comfortable temperature.
The air that enters the duct is processed, moving through separate filters with varying degrees of purification. The quality of the output stream can be changed by the user depending on the required parameters.
The air handling unit creates areas of high pressure, as a result of which the exhaust air systematically leaves the premises. The exit is through the system shafts.
Ventilation unit diagram
To better understand how the system works, it is necessary to consider the air flow pattern:
- Red marker - air to be worked out;
- Blue marker - incoming and cleared;
- Yellow - exhaust air coming out.
Device
The device of the supply type ventilation unit is as follows:
- Air valve - allows fresh air to enter the system.
- Filters - clean the space from unpleasant odors, pollution and toxic substances. The quality of air purification depends on their nature.
- Heaters - heat the air at the inlet to the system to the set temperature. Can be water or electric.
- The fan is the main functional element of the unit, which is responsible for the intake of air from outside.
- Noise Silencers - reduce the level of vibration created by the elements of the system to the maximum possible level.
Application
The characteristics of the air handling unit of the supply type contribute to its operation in premises of almost any purpose, from residential to industrial. Efficient forced air exchange keeps residents and staff comfortable and well-being all day long.
Almost every modern air handling unit is capable of:
- Effectively clean the space from dust, cigarette smoke, exhaust gases.
- Regulate air humidity.
- Control andchange the temperature of the space.
Air handling units are indispensable at facilities with a large concentration of personnel. It is in such places that the lack of fresh air is most acutely felt. The installation of such systems meets the requirements of modern safety standards. According to them, the air in public premises must be completely renewed at least every hour.
Features of choice
Air-handling units should be selected not only based on the available budget, but also according to the functionality, based on power supply parameters, data on the air environment, the number of people in the room.
An important criterion is the purpose of the premises. So, if it is necessary to service an industrial facility, the performance of technological equipment comes first, which is reflected in the required air exchange rate.
Advantages and disadvantages
Modern supply units of ventilation systems are equipped with efficient automation that maintains the set airspace indicators at a stable level.
Due to the effect of heat recovery, units in this category demonstrate economical energy consumption while establishing comfortable indoor conditions. Installation of the supply unit guarantees the outflow of recycled air and its supply.
Despite the obvious advantages, ventilation units of the supply typehave some drawbacks. Here it is worth noting certain difficulties that arise during the development and installation of the system in dense residential areas. Most often, the problems lie in the lack of free space to accommodate the installation in accordance with safety standards and regulations.
During operation, air handling units create a noticeable vibration, which leads to certain noise effects, causing discomfort to people nearby. Elimination of inconvenience requires additional costs for the installation of insulating materials, for example, laying fiberglass, lamella mats, bitoplast. Such events turn out to be quite expensive.
In the end
In the fast-paced whirlpool of life in large cities, quite often a person does not have the opportunity to enjoy enough clean, fresh indoor air. The problem is solved by installing air handling units. Modern functional systems ensure the establishment of a he althy microclimate in both residential and public facilities due to forced air renewal.
