In the modern world, the terms “intelligent” or “smart” are used to describe various technologies, sometimes without any outstanding properties. To understand what smart ventilation is, let's talk about how the ventilation system is organized in a living space.
In the domestic segment, according to Construction Norms & Regulations, the calculation of ventilation is carried out according to two standards: by air exchange rate and by the number of people in the room.
For example, we select a ventilation unit, taking into account Construction Norms & Regulations indicator of 36 cubic meters of air per person. In Ukraine, the capacity of carbon dioxide outside is approximately 400-450 ppm, when 40 cubic meters are supplied per person, the content of carbon dioxide inside the room will be at the level of 900 ppm.
Cleaner air enters the room and mixes with air with a higher carbon dioxide content. In a traditional ventilation system, there is no equipment that signals that air should be supplied to some rooms and not to others. Everything is predetermined by technical calculation during the design, and current conditions are not taken into account.
However, the reality is different: in a room with people, the level of carbon dioxide rises, but not in an empty room, and in a room without people, the system does not need to operate at higher speeds.
It is a smart ventilation system that is designed to solve this problem.
So, we found out that the automatic ventilation of a private house can recognize the capacity of carbon dioxide in the room and control its threshold “from and to” using a CO2 sensor and a VAV valve.
Such ventilation is a mathematical control process.
“Brains” control the engine of the supply system and exhaust ventilation with recuperation. Depending on the readings of the CO2 sensor, the power of the engine and the level of opening of the valves are regulated.
The system sets all areas from 600 to 800 ppm.
When family members are in the bedrooms, the CO2 intake in other areas is zero. In a conventional ventilation system, air will be supplied to all areas according to Construction Norms & Regulations.
A smart ventilation system detects the presence of a person by changing the level of carbon dioxide. If the amount of CO2 does not change, it runs at minimum speed.
How can you “manage” the air that is supplied to the living room while family members are in the bedrooms?
The dampers in the living room are closed, air is supplied to areas where there are critical or non-critical values.
If the value is critical, the valve opens 100% to reach the norm faster, if it is non-critical, it opens a little, getting the amount of air that is enough to maintain the parameters.
In such a system, it is possible to install a ventilation unit with a capacity of not 600, but 350 cubic meters – and it will be enough. Reducing the size and noise characteristics is a significant plus for residential building.
Alter Air consistently recommends the Jablotron manufacturer for ventilation, as it has all the necessary software.
With the help of applications, the user and the installer can manage the system and obtain complete information about its operation.
The client installs an application with an admin panel on an Android or IOS gadget. It is also possible to connect via ModBus to the “smart home” system.
It has access to indicators on several levels: the functioning of the house in terms of system performance, the operation of the ventilation unit, detailed reports – how much air is supplied per second, CO2 level, air supply temperature, recuperator efficiency, etc
In the domestic segment, the manufacturer Jablotron offers automation of ventilation and air conditioning systems. Other companies working through the VAV system produce equipment designed for the semi-industrial and industrial segments. It is impossible to control 400 cubic meters of air with such valves - we are talking about much larger volumes.
The Jablotron Futura M and Futura L heat recovery air-handling units have variable air supply valves. Both models, in addition to controlled supply of fresh air and removal of exhaust air, provide air purification, heat and moisture recovery, cool air supply through by-pass, and air heating.
At the end of 2022, Jablotron and NIBE will present a collaboration. Users will have access to the “smart home” system, which includes air-to-water heat pumps, a cool breeze system (adiabatic cooling of air supplied to the room from the street during the off-season), ventilation with VAV valves, and an alarm system. All of this can be configured and managed from a single application.
Jablotron smart ventilation uses unique enthalpy recuperators. They function without pre- and post-heating, with latent cold and heat in the condensate that forms in the recuperator itself. Such a recuperator does not freeze over.
Almost all manufacturers of smart ventilation systems use fans of the EBM-PAPST brand (Germany).
The ventilation system uses three sensors: a CO2 sensor, a temperature sensor, and a boost-button.
VAV valves (variable airflow valves) play the leading role in the smart ventilation system.
To implement the system, Vents flexi air ducts with a diameter of 90 mm are used. All valves in such air ducts are connected by latches.
For a house up to 300 sq.m. the cost is 400-600 thousand UAH, depending on the configuration.
The Jablotron Futura L ventilation unit with heat and moisture recovery ensures high-quality air exchange at the apartment, and also reduces the load on the heating system in the cold season. Thanks to the Alfa wall controller and the MyJablotron mobile app it is easy to operate the unit.
Flexible air ducts Airflex have a high degree of plasticity, which allows air to be supplied even to hard-to-reach areas. Moreover, they are covered with a layer of thermal insulation, which prevents heat loss and absorbs noise characteristics during the operation of the ventilation unit.
The Daikin duct air conditioner provides efficient room cooling. The FBA series has a rather thin body, which makes it easy to place in a ceiling space. The self-diagnosis function ensures a safe operation of the device and indicates problems if any occur.
Double-slot diffusers from the TROX brand are designed for high-quality air distribution throughout the room. They combine visual aesthetics and high technical potential. Air currents are given in different directions, evenly scattering and avoiding any drafts. Outwardly, only laconic lines on the ceiling remain visible.
A low-pressure internal duct unit Daikin FDXM 35F is installed in the ceiling space of the bathroom - it works to cool the bedroom. It is accessed through hatches. The capacity of the air conditioner is enough to service rooms up to 35 m2, which is optimal for a given room. The lowering of the ceiling in a technical room was 300 mm.
Vertical indirect heating boiler Drazice OKSE 200 l is designed to provide apartment residents with hot water. The inner surface of the tank is covered with high-quality enamel without nickel, which ensures a long operation of the water heater, and there is also an anti-corrosion coating. The temperature inside can be kept between 7 and 77 ℃. The water heating indicator always shows the current temperature on the front of the tank. There is a fast heating function. This is an excellent solution for an apartment, allowing you not to depend on seasonal blackouts and other inconveniences.
Electric boiler Vaillant Ecoblock An electric boiler Vaillant Ecoblock with a capacity of 6 kW and efficiency of up to 99% works for heating and hot water supply of the entire apartment. It has a wide range of temperature settings for both heating and hot water supply. There are frost protection and 2-level overheating protection. Equipped with eBus data transmission technology. With the help of a capillary thermostat, residents can smoothly regulate the heating temperature in the range from 25 to 85 ℃
The Zilmet expansion tank is designed to compensate extra pressure in the heating system. Works in conjunction with the Vaillant electric boiler above. The special inner lining of the tank prevents the growth of any bacteria, that is, the water does not acquire a metallic taste, does not stagnate or change its properties.
A modern system for filtering and softening water: cleans water from all kinds of impurities and odors, neutralizes iron, making it soft, pleasant and safe for household appliances, water pipes and human use. The purified water is also suitable for drinking directly from the tap. The refiner does not require changing the carbon filters, and is controlled via WiFi - maximum automation and comfort!
Smart ventilation provides increased comfort, efficient energy use and greater efficiency with less unit power.
Experimenting with ventilation on your own is something Alter Air will never recommend. Find good professionals – competent designers and installers. Then you do not have to pay twice.
Here are some obvious benefits of such a system:
you can install equipment of lower power for a regulatory calculation, but it will meet your needs
filters will have to be changed three times less often
air quality will be twice as good
the ventilation unit always runs at minimum speed, which saves energy
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