Modern technologies for ventilation and air purification in residential premises. Modern technologies in the field of maintenance of ventilation systems Modern ventilation technologies

Modern technologies for ventilation and air purification in residential premises. Modern technologies in the field of maintenance of ventilation systems Modern ventilation technologies
19.10.2019

Radial fans type WRW

Adjustable low pressure radial fans type WRW manufactured "KORF", which are used in ventilation and air conditioning systems, provide air flow up to 7300m 3 /h. Fans are designed to move air and other non-explosive gas mixtures. The fans are used for direct installation in rectangular ducts of air conditioning and ventilation systems in industrial and public buildings. Permissible temperature of transported air is from -30°С to +40°С. The fan is made of galvanized steel sheet grade 08PS in a standard design.

Impellers ZIEHL-ABEGG high-quality, well-balanced, therefore, the noise characteristics are no worse, and in some standard sizes even better, than those of imported analogues. Tests were carried out at GosNIITsAGI for both aerodynamics and acoustics. Official conclusions and test reports have been received. The quality of the fan spiral, one of the main parts on which the aerodynamic characteristics of the fan depends, was obtained by a special method developed by KORF specialists, which is a new technology.

WRW fans are manufactured in eight standard sizes. Each standard size has several fan models depending on the type of fan used. The KORF production association takes an integrated approach to creating a microclimate in a building using high-quality equipment: fans, water heaters (two- and three-row), electric heaters, noise suppressors, filters (pocket, short pocket, cassette), control dampers, control units, industrial air curtains, bactericidal air treatment sections, air handling units, central air conditioners.

Bactericidal air treatment sections

Type bactericidal air treatment sections SBOW designed for air disinfection in medical, sports, children's, educational, food production and other premises. As is known, in accordance with the guide R3.1.683-98 “Use of ultraviolet bactericidal radiation for disinfection of air and surfaces in premises”, the State system of sanitary and epidemiological regulation of the Russian Federation regulates premises to be equipped with bactericidal irradiators for air disinfection, in five categories depending on the required level of bactericidal effectiveness and volumetric dose (exposure) for Staphiloccus aureus, chosen as a standard. SBOW bactericidal air treatment sections allow for bactericidal air treatment in all five categories of premises with the required level of bactericidal efficiency.

Discharge lamps are used as sources of ultraviolet bactericidal radiation, in which, during the process of electrical discharge, radiation is generated containing a wavelength range of 205-31 nm (normalization is carried out by a wavelength of 254 nm). Such lamps include low-pressure mercury lamps, as well as xenon flash lamps. Depending on the air flow, the required number of lamps in the bactericidal air treatment device for different categories of premises is determined. More precisely, the number and type of bactericidal lamps are selected based on data on the volume of air being processed, the size of the air duct and the category of the room.

When using bactericidal treatment devices in a supply and exhaust ventilation system, these devices are placed in the outlet chamber. SBOW sections are duct devices that are installed in the channel of a rectangular air duct and disinfect the air passing through it. Thus, bactericidal air treatment is carried out directly in the air duct and does not require special safety measures for people in the room. High-precision German equipment, German production technologies, adjustment and testing of operating parameters ensure the high quality of manufactured ventilation equipment.

Thanks to these conditions, the manufactured equipment is guaranteed for up to 5 years. The plant is located in the Moscow region, so the goods are shipped within a day from the moment of payment. It is possible to produce equipment according to individual orders. Catalogs are provided for all manufactured products.

The quality of workmanship and flexible marketing policy of PO KORF LLC were also appreciated by its clients, including such well-known companies and organizations as: the office building of the TechnoNIKOL holding (Moscow); restaurant chain “Elki-palki” (Moscow); chain of restaurants "Patio Pizza" (Moscow, Omsk); Boeing pilot school (Moscow); “Catherine Museum” in Tsaritsyno (Moscow); Museum estate "Ostafyevo" (Moscow); Hermitage Museum (St. Petersburg); Concern "Kalina" (Ekaterinburg); Koltsovo Airport (Ekaterinburg); Hotel "Central" (Ekaterinburg); "Promstroybank" (Omsk); "Sberbank" (Togliatti).

Modern people meticulously monitor their food: are there GMOs in meat, in what conditions were these potatoes grown, what did they feed the cow that gave this milk? The average person equips his home with maximum comfort: renovation, soundproof windows, heated floors. But in all this bustle, he often forgets about the air - so everyone breathes not clean, but saturated carbon dioxide air, filled with fumes and particles of sweat.

In order to make the air in the home clean and safe for the normal functioning of each family member, it is necessary to organize high-quality ventilation. Modern technologies make it possible to make ventilation natural or forced, as well as use forced ventilation.

Regardless of what kind of ventilation system operates in the apartment, it must meet the following conditions:

  • The air inside the apartment () should move from the living rooms to the bathroom and kitchen.
  • Passive ventilators should be located at a height of at least 2 meters from the ground to prevent polluted city air from entering the house.
  • The exit of the ventilation shaft is located above the roof of the house.

Natural ventilation: operating principle

This method of ventilating a room is the simplest and least expensive. Ventilation ducts in the structure of the house are the natural ventilation of apartments. Exhaust vents located in kitchens, bathrooms, toilets and equipped with grilles.

Air should also enter the apartment through slightly open windows and doors, but residents try to isolate apartments as much as possible by installing sealed doors and windows, thereby disturbing the necessary air balance.

ADVICE! Do not check the draft level in the ventilation shaft by holding a burning match or lighter to it: if there is gas in the duct, it may ignite.

Residents do not have the right to clear a clogged ventilation shaft on their own: all such work must be carried out by employees of the housing organization specializing in this area. Blockages are called the most common cause of inadequate ventilation, but getting rid of them is extremely difficult.

The only thing the homeowner can do is to clean the part of the channel that is directly adjacent to the room. Cleaning the remaining channels is the task of specialists.

But sometimes, even if the ventilation in the apartment works well, the windows can fog up, and the air always remains heavy and stale. In this case, the problem may lie much deeper: natural ventilation cannot cope and needs help. The standard reaction of residents to such a situation is frequent ventilation using open windows, but in the cold season such ventilation threatens to cause colds.

Therefore, experts recommend installing several supply valves or passive ventilators. Some of them are installed near heating radiators, then the air from the street is immediately included in the indoor air circulation system. Modern models are often equipped, which allows them to work both as a supply and exhaust mechanism.

Features of forced ventilation

In some cases, natural ventilation, for one reason or another, cannot cope with the load and does not provide sufficient air flow. In this case, experts advise turning to forced ventilation systems for the apartment.

ADVICE! You should not rely only on your own strength and try to install forced ventilation yourself: this work should be done by a master.

The need to organize forced ventilation of an apartment is usually associated not only with the actions of the apartment owners themselves (organization of thermal insulation of the room, sealed doors), but also with the unsatisfactory work of public utilities.

Supervision over the adequate operation of ventilation channels, timely cleaning of air ducts and normal draft indicators, if carried out, is extremely rare and of poor quality.

FACT! Rooms with plastic windows have a special need for forced ventilation: the tightness of the structures disrupts the microclimate of the room, so its ventilation is mandatory.

In the kitchen or living room, the air duct can be laid above the cabinets

There are two main schemes for organizing forced ventilation in premises:

  • Using a supply ventilation unit.
  • Using an air handling unit with recovery.

Supply ventilation: advantages of the system and nuances of operation

The ideal solution to the problem of apartment ventilation is the installation of a supply ventilation unit. A standard system of such an installation is an ideal mechanism for forced injection, filtration, as well as. Often in such installations, an electric heater is also installed next to the fan, which makes it possible to regulate the ventilation problem in winter and autumn. In addition, the installation in this configuration becomes an additional source of heat in the apartment.

ADVICE! When purchasing an air supply fan unit, pay attention to models equipped with additional functions: humidification, ionization, disinfection. This will save on additional devices.

To ensure the operation of such a system, a system of air ducts and grilles must be installed in the room, through which purified and heated air will be supplied to the room. The complexity of performing such work makes the process of constructing everything necessary at the stage of construction or major renovation of the premises optimal.

The required dimensions of the box are calculated using special tables and formulas, so such work should not be carried out by a non-professional who does not have sufficient knowledge about ventilation systems and air supply standards.

The air handling unit itself should be installed outside residential premises: for example, on a balcony. To do this, a hole is made in the wall, which allows outdoor air to be taken in. After the necessary filtration and purification procedures, the resulting warm air is supplied to the rooms of the apartment.

Flat air ducts are laid along the ceiling; later a suspended ceiling will be made,
which will hide the wiring and duct pipes

A significant disadvantage of such systems is considered to be a significant increase in energy costs: heated air instantly escapes into the exhaust openings. In order not to encounter such difficulties, many apartment owners prefer to install. The advantage of an installation with recuperation is the ability to reduce the power required to heat the room due to the heat from the removed air. Such a system is much more expensive to install, but at the same time it allows you to significantly save on electricity, reduce the load on the power grid and “leave” heat in the home, which with a conventional system thoughtlessly goes outside.

FACT! When using an installation with recovery, one air flow transfers only heat to the other, and not odors and pollution: therefore, you should not be afraid of the spread of kitchen or toilet aromas throughout the apartment.

Modern human housing is, in fact, a closed ecosystem. It may not be ideal yet, but with the development of technological progress it is being improved from year to year. And to be convinced of this, it is enough to simply trace the development of ventilation and air purification technology in residential premises. You can get acquainted with the latest achievements of engineering in this segment on the website of the company “Breathe at Home” https://www.vozduh66.ru.

Modern air purification systems

Today, the most popular and in demand ventilation system for urban premises of any purpose is supply and exhaust. Its advantages, first of all, include:

  • Ease of installation;
  • Reliability of operation;
  • Long service life;
  • Versatility.

We would like to dwell on the last advantage in more detail. Different residential buildings and different people have different requirements for supply and exhaust ventilation. And to meet these requirements, various air purification systems are installed in the supply and exhaust ventilation. It is they who give suction and exhaust ventilation versatility of application and a wide range of performance characteristics. There are a huge number of different cleaning systems on the modern market, differing in their operating principles. Let's list just a few of them.

1. The principle of the plasma catalytic effect.

Purification systems operating on this principle decompose gaseous pollutants using plasma-chemical and catalytic reactions into elemental gases, for example, carbon dioxide and water vapor. In addition, this technology allows the production of ozone, which further refreshes the air and cleans it of pathogens.

2. Air filtration principle.

The technology described above is very effective, but at the same time extremely energy-intensive. The power of one plasma catalytic installation can vary from 10 to 50 kilowatts, which not every consumer can afford. Therefore, air purification filter systems are offered to the mass buyer. And this does not mean that they purify the air worse. This is absolutely not true. They simply have a different, cheaper operating principle, which does not in any way affect the quality of cleaning.

For example, Daikin began to equip its cleaning systems with a seven-leaf filter, the service life of which reaches 7 years!

3. Negative ion generators.

Another way to purify the air is to destroy complex organic molecules, which in most cases are sources of unpleasant odors, with negative ions.

The efficiency of air circulation determines the quality of the indoor microclimate, which determines the level of comfort and overall well-being of a person. The air inside the room must meet certain standards for oxygen and carbon dioxide content. To achieve and maintain optimal atmospheric parameters, a ventilation system is installed. Installation of a ventilation complex requires a professional approach and special knowledge from the contractor.

Operating principles of different ventilation systems

A ventilation system is a set of equipment and measures that ensure sufficient air circulation. The main task of ventilation is to remove “waste” from the room and fill it with a flow of fresh air. Each system can be characterized by four basic characteristics: purpose, method of movement of air masses, design features and scope of application.

Natural air circulation

In apartment buildings, natural ventilation is predominantly used. Air circulation is carried out under the influence of pressure and temperature changes. The principle of natural air exchange is often implemented in private homes.

The popularity of natural circulation is due to a number of advantages:

  1. Ease of organization. Expensive equipment is not required to install a ventilation system. Air exchange is carried out without human intervention.
  2. Energy independence. Air supply and removal occurs without electricity.
  3. Opportunity to improve efficiency. If necessary, the network can be equipped with forced ventilation elements: a supply valve or an exhaust hood.

The basic design of a natural type ventilation system is shown in the diagram. For the complex to function, exhaust and supply channels are required to ensure free movement of air.

Ventilation scheme:

  1. Fresh air (blue “streams”) enters the home through windows or ventilation valves.
  2. Entering the room, the air is heated by heating devices and displaces the “spent” composition saturated with carbon dioxide.
  3. Next, the air (green “streams”) moves through the through windows or gaps under the doors and moves in the direction of the exhaust vents.
  4. Due to temperature differences, flows (pink) rush through vertical channels and the air is discharged outside.

Mechanical air exchange

If the performance of natural circulation is not enough, then installation of a mechanical ventilation system is necessary. Special equipment is used to remove and supply air flow.

In complex systems, incoming air can be processed: dehumidified, humidified, heated, cooled or purified.

Forced-action systems are typically used in manufacturing, office and warehouse environments where high-power ventilation is required. The complex consumes a lot of electricity.

Comparative advantages of mechanical ventilation:

  • wide range of action;
  • maintaining specified microclimate parameters regardless of wind speed and outside air temperature;
  • automation of system management.

We implement mechanical air exchange in several ways:

  • installation of a supply or exhaust device;
  • creation of a supply and exhaust complex;
  • general exchange systems.

The supply and exhaust complex is considered the most rational. The system has two independent flows of expulsion and air supply, connected by ventilation ducts. Main components of the complex:

  • air ducts;
  • air distributors - receive air from outside;
  • automatic systems - control of network elements that monitor basic parameters;
  • supply and exhaust air filters - prevent debris from entering the air duct.

The system may include: air heaters, humidifiers, hand-operators and dehumidifiers. Structurally, the device is made in monoblock or assembled form.

Operating principle of the ventilation system:

  1. The supply compressor “draws in” air.
  2. In the recuperator, the air is cleaned, warmed up and further supplied through ventilation ducts.
  3. The exhaust compressor generates a vacuum in the air duct, which is connected to the intake grille. There is an outflow of air.

Special purpose air exchange systems

Types of special purpose ventilation systems:

  1. Emergency installation. An additional ventilation system is installed in enterprises where leakage or discharge of a large volume of gaseous substances is possible. The task of the complex is to remove air flows in a short time.
  2. Anti-smoke system. When there is smoke in the room, the sensor is automatically triggered, the ventilation is turned on - some of the harmful substances enter the exhaust ventilation ducts. At the same time, fresh air is supplied. The operation of smoke ventilation increases the time for evacuating people. The complex is installed in public buildings or where fire-hazardous technologies are used.
  3. Local - organized as an exhaust or supply ventilation system. The first option is relevant for kitchens, bathrooms and bathrooms. Air supply devices are usually used in production, for example, to blow air into a workplace.

Organization of the ventilation system

Standards for air exchange arrangement

When planning a ventilation system, one must proceed from the requirements of sanitary rules and regulations imposed on premises for various purposes. Fresh air supply rates are based on one person.

Basic standards are given in the table.

In office space, the focus is on the rooms where the staff are located. Thus, in an office, an air change of 60 cubic meters is considered sufficient. m/hour, in the corridor - 10 cubic meters. m, in the smoking room and bathroom - 70 and 100 cubic meters, respectively.

When organizing a ventilation system in an apartment or private sector, they are guided by the number of residents. According to sanitary standards, air exchange should be at least 30 cubic meters per hour per person. If the housing area does not exceed 20 sq.m., then the area of ​​the premises is taken as the basis for the calculation. There should be 3 cubic meters of air per square meter.

Planning and calculation

The design of a ventilation system in a private house must be developed during the construction phase. In this case, it is possible to make a separate room for the ventilation chamber, determine the optimal places for laying pipes and create decorative niches for them.

It is better to entrust the calculation and planning of the supply and exhaust system to professionals. The specialist will draw up technical specifications taking into account the area and number of rooms, the location and purpose of rooms, the arrangement of elements that increase the load on the ventilation system (stoves, bathrooms and fireplaces).

Important! Design requires a balanced, serious approach to determining the power of the equipment - this will allow for sufficient air exchange and at the same time not “drive” air in vain.

The power of the system, depending on the air exchange rate, is calculated as follows: L=N*Ln, where:

  • N - the largest number of people in the room;
  • Ln - hourly air consumption by a person.

The average productivity of the complex for apartments is 100-500 sq.m/h, for private houses and cottages - 1000-2500 sq.m/h, for administrative and industrial buildings - up to 15,000 sq.m/h.

Based on the design power, the remaining characteristics of the ventilation systems are selected: the length and cross-section of the air duct, the size and number of diffusers, and the performance of the ventilation unit.

The cross-section of the air duct is calculated using the formula: S=V*2.8/w, where:

  • S - cross-sectional area;
  • V is the volume of the ventilation duct (working air volume/system power);
  • 2.8 - standard coefficient;
  • w - air flow speed (about 2-3 m/s).

Ventilation system installation technology

The entire technological process is divided into the following stages:

  1. Preparation of equipment, components and installation tools.
  2. Assembly and installation: installation of air ducts, joining pipes to each other, fixing air heaters, fans and filters.
  3. Power connection.
  4. Adjustment, testing and commissioning.

To work you will need:

  • flanged busbars;
  • metal corners of different sizes;
  • anchors, screws;
  • thermal insulation material (mineral wool);
  • reinforced tape;
  • vibration isolation fasteners.

The installation of air ducts begins if the following requirements are met:

  • walls, partitions and interfloor ceilings were erected;
  • installation sites for wet filters and inflow chambers are waterproofed;
  • markings have been applied for the finished floor;
  • in the direction of laying the air duct, the walls are plastered;
  • doors and windows installed.

Air duct installation procedure:

  1. Mark the fixation points of the fasteners.
  2. Install fasteners.
  3. According to the diagram and the proposed instructions, assemble the air ducts into separate modules.
  4. Raise the system elements and attach them to the ceiling using clamps, anchors or studs. The fixation option depends on the dimensions of the ventilation ducts.
  5. Connect the pipes together. Treat the junction points with silicone or cover them with metallized tape.
  6. Attach grilles or diffusers to the ventilation ducts.
  7. Connect the control system.
  8. Connect power to the ventilation complex and perform a test run.
  9. Check the correct operation of the entire system and each element separately.

The most labor-intensive process is installing air ducts. The requirements for installation work of various ventilation ducts are almost the same:

  • flexible elements are installed in an extended position - this way pressure losses are minimized;
  • when “cutting” a ventilation duct into a wall, adapters or sleeves must be used;
  • if the air duct is damaged or deformed during installation, it must be replaced with a new fragment;
  • when placing ventilation ducts, it is important to take into account the direction of the air flow;
  • Flexible air ducts are connected using galvanized or nylon clamps.

Principles for creating natural ventilation

A number of requirements are put forward for the organization of natural air circulation:

  • in winter, supply ducts should not cool the air in the room;
  • It is necessary to ensure a flow of fresh air into each living room;
  • air flow must circulate even with the windows closed;
  • drafts in the house are not allowed;
  • “exhaust” air must be removed freely and promptly through exhaust ducts.

Exhaust ventilation ducts should be installed in the following rooms:

  1. Technical and sanitary rooms: bathroom, kitchen, swimming pool, laundry.
  2. Pantry and dressing room. If the room is small, it is enough to leave a gap of 1.5-2 cm between the floor and the door.
  3. In the boiler room, it is necessary to provide for the presence of a “supply inlet” and an exhaust duct.
  4. If the room is separated from the ventilation duct by three or more doors.

In other rooms there is an influx of fresh air through cracks in the window frames. With the massive introduction of plastic window structures, the efficiency of natural ventilation has greatly decreased. To increase its performance, it is recommended to install supply wall or window valves.

The wall inlet is a cylindrical flask, inside of which there is a heat and sound insulating insert, a filter element and an air duct. The throughput capacity of most models is 25-30 cubic meters per hour with a pressure drop of 10 Pa.

Installation procedure for wall valve:

  1. Preparing the wall. Remove the hanging façade panels (if any) from the outside, and apply markings from the inside of the room. The optimal location of the inlet: between the window sill and the radiator or near the window at a distance of 2-2.2 m from the floor.
  2. Drilling a hole. First, starting drilling is performed to a depth of 7-10 cm, wall fragments are removed and final drilling is carried out.
  3. Cleaning the hole. Remove construction dust with a vacuum cleaner.
  4. Valve installation. Install a heat-insulating “sleeve” and an air duct. After this, secure the grille, valve body and damper.

The inlet should be periodically cleaned of dust, soot and small particles of dirt. It is enough to rinse the filter element under running water and install it in place.

The principle of natural air circulation: video.

Commissioning and service of ventilation and air conditioning systems from a smartphone

Commissioning is the final and extremely important stage of work before delivery of engineering systems to the customer. Both designers of engineering systems and installers, who need to confirm the correctness of installation and the calculated design characteristics of these systems, are interested in objective quality control of the work performed. When carrying out commissioning work, special attention should be paid to the selection of instruments that will not only obtain accurate measurement data, but will also ensure the convenience of taking measurements with subsequent documentation of the results obtained.

Today, in conditions of increased customer demands and growing competition, the availability of accurate and convenient tools for working with engineering systems is an essential condition. The modern world already inextricably interacts with “smart” technology, which makes it possible to conveniently compare, log and transmit measurement data over the Internet, increase efficiency and ensure ease of use. In this review, we will introduce the reader to the latest technologies in the field of measurements that “close” issues that often arise during commissioning and maintenance of air conditioning and ventilation systems.

During the commissioning of a ventilation system, a service engineer is often faced with the task of measuring the speed, volumetric flow of air and its temperature in the ventilation ducts, as well as adjusting the air flow to the required design parameters. In this situation, inconveniences arise due to the fact that the measurement point and air flow adjustment points, such as iris valves, throttle valves and dampers, are located at a considerable distance from each other. In some cases, this distance can reach 20 m. In this regard, taking measurements and simultaneously adjusting the air flow in the air duct for one technician seems to be an impossible task using standard tools.

Thanks to new technologies, it has become possible to carry out many work processes simultaneously. In instrumentation, a turning point has been the use of wireless modules in instrument development. Innovations such as remote control of instruments and wireless data transfer for generating reports open up a whole new range of possibilities for technicians and make their jobs much easier. A striking example of equipment using the latest technologies in solving commissioning and diagnostic problems is testo smart probes (from the English SmartProbes). In total, the line includes eight devices: testo 405i, testo 410i, testo 510i, testo 115i, testo 549i, testo 610i, testo 805i and testo 905i.

In the situation described above, the testo 405i smart wire anemometer will come to the rescue, as it allows you to measure air flow speed, temperature and air volume flow. The measured values ​​are transmitted wirelessly via Bluetooth to a special mobile application installed on a smartphone or tablet. The mobile device's graphical screen and intuitive controls make it much easier to view measurement data and use numerous functions. As a result, one service engineer gets the opportunity to measure flow speed, volumetric flow and air temperatures at a specific point, easily set the geometry and cross-sectional dimensions of air ducts to determine volumetric flow and, at the same time, adjust the air flow speed to the required values. In addition, the smart probe anemometer with heated wire provides tangible convenience when working in air ducts thanks to the telescopic probe tube with a maximum length of 400 mm.

When commissioning ventilation systems in large buildings, the task of balancing the volume flow at various supply and exhaust ventilation grilles often arises. In addition, it is necessary to measure the air exchange rate based on the sum of several grilles located in the same room.

A smart probe anemometer with an impeller can solve all these problems, with which you can measure air speeds and temperatures on ventilation grilles, as well as calculate volumetric air flow in real time. Measurement data is transmitted via Bluetooth to a mobile application installed on a tablet or smartphone. Thanks to the entered dimensions of the ventilation grille, the mobile application calculates the volumetric air flow and displays its values ​​in parallel with the measured data on speed and temperature on the screen of a smartphone/tablet. The mobile application allows you to quickly calculate the total volumetric flow rate on different grilles in one room for convenient balancing of the ventilation system.

Filters are installed in the ventilation systems of modern buildings to remove impurities and contaminants in the air. Service engineers are faced with the task of determining the remaining life of air filters. This task can be solved with the testo 510i differential pressure gauge smart probe.

A pressure gauge checks the pressure difference in the ventilation duct before and after the filter. The measured values ​​are transmitted wirelessly via Bluetooth to a mobile application installed on a smartphone or tablet. Based on the measured values, the degree of filter contamination is determined in accordance with the filter manufacturer's recommendations. Using a differential pressure gauge smart probe and a pitot tube connected to it, you can measure flow and volume flow in high-velocity (2 to 60 m/s) air ducts, in aspiration systems and in ducts for dehumidification systems where the air temperature above 70 °C.

Service engineers are constantly faced with challenges related to verifying the functionality of extensive air conditioning systems. A set of smart probes for refrigeration systems can easily solve these problems. The kit consists of two smart probes for high-pressure pressure gauges up to 60 bar, two smart probes for thermometers for pipes (clamps) with a diameter of 6 to 35 mm and a compact case with dimensions of 250 X 180 X 70 mm for carrying and storing them. All smart probes have a built-in Bluetooth module with low energy consumption, which provides connection with a mobile device at a distance of up to 20 m. A special application created for smartphones and tablets is capable of simultaneously broadcasting measurement data from four smart probes of the refrigeration kit.

Measurements from smart probes are sent to the mobile device once per second and can be displayed as a graph or table. The application memory contains 60 of the most common refrigerants. The list can easily be updated with new refrigerants as they become available.

To check the operation of air conditioning systems, you need to connect smart probes, pressure gauges and thermometers to the high and low pressure pipes of the air conditioning system. Automatic calculation of the most important parameters “steam superheat” and “liquid subcooling” is based on surface temperature data obtained from connected pipe thermometers, and from measured high and low pressure values, as well as on the basis of technical refrigerant parameters stored in the application memory. Using the obtained refrigeration cycle data, you can diagnose the performance of the system as a whole and even identify the faulty component with a high degree of accuracy.

The Testo Smart Probes mobile app used for smart probes is free. You can install it yourself on mobile devices running Android from Google PlayMarket, and from the AppStore for mobile devices running iOS. To ensure communication, the mobile device must have a Bluetooth 4.0 (LowEnergy) module installed with operating system versions no older than Android 4.3 and iOS 8.3.

Using the application, you can receive data from any type of smart probes at a distance of up to 20 m. The application can support the simultaneous connection of up to six testo smart probes, carry out long-term measurements, record measurement data in the form of a graph or tabular values, save the final measurement report in Excel and PDF formats, attach photographs of the measurement location and the company logo to it and send it by e-mail. Now, thanks to the use of wireless communication between the devices and the mobile application, there is additional convenience when taking measurements, since you can obtain measurement data while being far enough from the measurement site and without using additional hoses and wires.