Installation of supply and exhaust ventilation with recuperation. Supply and exhaust ventilation with heat and moisture recovery. Plate or cross-flow heat exchanger

A comfortable indoor climate cannot be organized without a good ventilation system. Plastic windows, doors and Decoration Materials make the house so airtight that it can lead to a lack of natural ventilation, dampness and condensation. And if you take into account the general air pollution, then you simply cannot do without effective air filters. In such houses, an air recovery system for private houses must be present. This device is driven by a supply and exhaust unit, which contains a heat exchanger. Such a device will not only provide housing with fresh, purified air, but also help reduce heating costs.

Recuperator for a private house. Advantages

The term "recuperator" in translation from lat. means returning. The device itself is a heat exchanger that stores heat in the room and transfers it to the air entering from the street. Recuperation is a ventilation method with minimum consumption heat. Such a device helps to save up to 70% of heat and return it back to the room.

Main advantages:

• Low noise
• No need to open windows
• Possibility of installation in a false ceiling structure
• Savings on heating and air conditioning costs
• Convenience and additional features

Automatic adjustment of the intensity of air flow makes the use of devices not only safe, but also comfortable.

How to choose a ventilation recuperator?

All modern ventilation units use the same principle of operation - they provide air flow to the house, cleaning it from dust and impurities. Such systems may differ: in dimensions, cleaning class, performance, equipment and the presence of additional functions.

Units with an electric heat exchanger have a built-in rotary heat exchanger with an efficiency of 80% and a remote control. In devices with a water heater, it is possible to control the speed and temperature of the incoming air flow. Such ventilation units are more popular than those with electric heat exchangers.

Given the minimum energy consumption of a heat exchanger for a private house, the price of which is quite affordable, the cost of installing a ventilation system will pay off very quickly. And if we also take into account the undoubted benefits for health and general well-being, then the choice in favor of a PVU with a recuperator becomes obvious.

Heat recovery ventilation is equipment designed to process air to such parameters that a person can feel comfortable and safe. Such parameters are regulated by the norms and lie within the following limits: temperature 23÷26 С, humidity 30÷60%, air velocity 0.1÷0.15 m/s.

There is another indicator that is directly related to the safety of a person being indoors - this is the presence of oxygen, or more precisely, the percentage of carbon dioxide in the air. Carbon dioxide displaces oxygen and, at a content of 2 to 3% carbon dioxide in the air, can lead a person to unconsciousness or death.

It is to maintain these four parameters that ventilation units with recuperation are used. This is especially true for modern business centers, where there is no natural influx of fresh air. Industrial, administrative, commercial, residential and other premises cannot do without modern ventilation equipment. With today's air pollution, the issue of installing ventilation units with recuperation is the most relevant.

It is possible to install additional filters and other devices in ventilation with recuperation, which allow you to even better clean and process the air to the specified parameters.

All this can be done with Dantex ventilation units.

The principle of operation of the supply and exhaust ventilation system with heat recovery

Thanks to the supply and exhaust ventilation system, clean air is pumped into the room, and the heated exhaust air is discharged outside. Passing through the heat exchanger, the heated air leaves part of the heat to the walls of the structure, as a result of which the cold air coming from the street is heated from the heat exchanger without spending additional energy on heating. This system is more efficient and less energy intensive than a ventilation system without heat recovery.

The efficiency of the heat exchanger varies with the outdoor temperature, it can be calculated by the general formula:

S = (T1 - T2) : (T3 - T2)
Where:

S– recovery efficiency;
T1- the temperature of the air entering the room;
T2- outdoor air temperature;
T3- the air temperature in the room.

Types of recuperators

Plate heat exchangers

This type of heat exchanger consists of a set of thin plates made of aluminum or any other material preferably with good heat transfer characteristics). This is the most inexpensive and most popular type of device (recuperator). The efficiency of a plate heat exchanger can range from 50% to 90%, and the service life is very long due to the absence of moving parts.

The main disadvantage of such recuperators is the formation of ice due to temperature differences. There are three options for solving this problem:

• Do not use recuperation during extreme low temperatures
• Use models of automated recovery process. In this case, cold air bypasses the plates, and warm air warms the ice. But it is worth considering that the efficiency of such models in the cold will decrease by 20%.

Rotary heat exchangers

The heat exchanger has a movable part - a cylindrical rotor (recuperator), which consists of profiled plates. Heat transfer occurs when the rotor rotates. The efficiency is from 75 to 90%. In this case, the rotation speed affects the level of recuperation. The speed can be adjusted independently.

Ice does not form on rotary heat exchangers, but they are more difficult to maintain, unlike plate heat exchangers.

With intermediate coolant

In the case of an intermediate heat carrier, as in plate heat exchangers, there are two channels for clean and exhaust air, but heat exchange occurs through a water-glycol solution or water. The efficiency of such a device is below 50%.

Chamber recuperators

In this form, the air passes through a special chamber (recuperator), in which a movable damper is provided. It is the damper that has the ability to redirect the flow of cold and hot air. Due to this periodic switching of air flows, recuperation occurs. However, in such a system, there is a partial mixing of the outgoing and incoming air flows, which leads to the ingress of foreign odors back into the room, but, in turn, this design has a high efficiency of 80%.

heat pipes

Such a mechanism has many tubes that are assembled into a single sealed unit, and inside the tube are filled with a special easily condensing and evaporating substance, most often freon. Warm air, passing through a certain part of the tubes, heats and evaporates it. It moves to the area of ​​​​the tubes through which cold air passes and heats it with its heat, while freon cools and this can lead to condensation. The advantage of this design is that polluted air does not enter the room. Optimal use of heat pipes is possible in small rooms in climatic zones with a small difference between internal and external temperatures.

Sometimes recovery is not enough to heat the room at low outdoor temperatures, so often electric or water heaters are used in addition to recovery. In some models, heaters perform the function of protecting the heat exchanger from icing.

Many people think that an air recuperator for an apartment is an optional item that you can do without. How can supply and exhaust ventilation reduce heating costs if the whole house is connected to the central network? In fact, it will not be possible to reduce costs, but it will be possible to keep warm. In addition, the recuperator performs a number of other equally important tasks. What - read in our article.

Prana 150

Apartment ventilator Russian production power of 32 W/h and the highest efficiency of 91%. The air exchange rates are supply 115 cubic meters / h, exhaust - 105 cubic meters / h, in night mode 25 cubic meters / h. Users complain that the recovery is inefficient, the air does not have time to be heated even up to room temperature, but as far as ventilation is concerned, everyone here gives maximum marks.

Electrolux EPVS-200

Air handling unit with plate heat exchangers, distilling more than 200 cubic meters of air per hour. Designed for residential buildings, offices, small industrial premises. Effectively cleans the air from dust and all contaminants, dries it and ionizes it.

Power 70 W. Fine filters of class F5 (EU5) are installed on the supply and exhaust. Self-diagnosis system.

VIDEO: The easiest and cheapest way to ventilate rooms with closed windows

Air recirculation in ventilation systems is a mixture of a certain amount of exhaust (exhaust) air to the supply air. This results in a reduction in energy costs for heating fresh air in winter period of the year.

Scheme of supply exhaust ventilation with recovery and recirculation,
where L - air flow, T - temperature.

Heat recovery in ventilation- this is a method of transferring thermal energy from the exhaust air stream to the supply air stream. Recuperation is used when there is a temperature difference between the exhaust and supply air, to increase the temperature of the fresh air. This process does not involve mixing air flows, the process of heat transfer occurs through any material.

Temperature and air movement in the heat exchanger

Heat recovery devices are called heat recuperators. They are of two types:

Heat exchangers-recuperators- they transfer heat flow through the wall. They are most often found in installations of supply and exhaust ventilation systems.

In the first cycle, which are heated by the outgoing air, in the second they are cooled, giving off heat to the supply air.

The supply and exhaust ventilation system with heat recovery is the most common way to use heat recovery. The main element of this system is the supply and exhaust unit, which includes a heat exchanger. Device air handling unit with a heat exchanger, allows transferring up to 80-90% of heat to the heated air, which significantly reduces the power of the air heater, in which the supply air is heated, in case of a lack of heat flow from the heat exchanger.

Features of the use of recirculation and recovery

The main difference between recuperation and recirculation is the absence of air mixing from the room to the outside. Heat recovery is applicable for most cases, while recirculation has a number of limitations, which are specified in regulatory documents.

SNiP 41-01-2003 does not allow re-supply of air (recirculation) in the following situations:

• In rooms where the air flow is determined on the basis of emitted harmful substances;
• In rooms in which there are pathogenic bacteria and fungi in high concentrations;
• In rooms with the presence of harmful substances, sublimated upon contact with heated surfaces;
• In rooms of category B and A;
• In rooms where work is carried out with harmful or combustible gases, vapors;
• In rooms of category B1-B2, in which combustible dusts and aerosols can be released;
• From systems with the presence in them of local suction of harmful substances and explosive mixtures with air;
• From vestibules-sluices.

Recycling:
Recirculation in air handling units is actively used more often with high system productivity, when air exchange can be from 1000-1500 m 3 / h to 10000-15000 m 3 / h. The removed air carries a large supply of thermal energy, mixing it into the outside air flow allows you to increase the temperature of the supply air, thereby reducing the required power heating element. But in such cases, before being re-introduced into the room, the air must pass through the filtration system.

Recirculation ventilation improves energy efficiency, solves the problem of energy saving in the case when 70-80% of the exhaust air enters the ventilation system again.

Recovery:
Air handling units with recuperation can be installed at almost any air flow rate (from 200 m 3 /h to several thousand m 3 /h), both at low and high levels. Recuperation also allows heat to be transferred from the extract air to the supply air, thereby reducing the energy demand on the heating element.

Relatively small installations are used in ventilation systems of apartments and cottages. In practice, air handling units are mounted under the ceiling (for example, between the ceiling and the suspended ceiling). This solution requires some specific requirements from the installation, namely: small overall dimensions, low noise level, easy maintenance.

The air handling unit with recuperation requires maintenance, which obliges to make a hatch in the ceiling for servicing the heat exchanger, filters, blowers (fans).

The main elements of air handling units

A supply and exhaust unit with recovery or recirculation, which has both the first and second processes in its arsenal, is always a complex organism that requires highly organized management. The air handling unit hides behind its protective box such main components as:

• Two fans various types, which determine the performance of the installation by flow.
• Heat exchanger recuperator- heats the supply air by transferring heat from the exhaust air.
• Electric heater- heats the supply air to the required parameters, in case of a lack of heat flow from the exhaust air.
• Air filter- thanks to it, the control and purification of the outside air is carried out, as well as the processing of the exhaust air in front of the heat exchanger, to protect the heat exchanger.
• Air valves with electric drives - can be installed in front of the outlet air ducts for additional air flow control and channel blocking when the equipment is turned off.
• bypass- thanks to which the air flow can be directed past the heat exchanger during the warm season, thereby not heating the supply air, but supplying it directly to the room.
• Recirculation chamber- providing the admixture of the removed air into the supply air, thereby ensuring the recirculation of the air flow.
  
  

In addition to the main components of the air handling unit, it also includes a large number of small components, such as sensors, an automation system for control and protection, etc.

	Supply air temperature sensor		heat exchanger
	Extract air temperature sensor		Motorized Air Valve
	Outdoor temperature sensor		bypass
	Exhaust air temperature sensor		bypass valve
	air heater		Inlet filter
	Overheat protection thermostat		Extract filter
	Emergency thermostat		Supply air filter sensor
	Supply fan flow sensor		Extract air filter sensor
	Frost protection thermostat		Exhaust air damper
	Water valve actuator		Supply air damper
	water valve		Supply fan
	Exhaust fan

Control scheme

All components of the air handling unit must be properly integrated into the system of operation of the unit, and perform their functions in the proper amount. The task of managing the operation of all components is solved by an automated control system technological process. The installation kit includes sensors, analyzing their data, the control system corrects the operation of the necessary elements. The control system allows you to smoothly and competently fulfill the goals and tasks of the air handling unit, solving difficult problems interaction of all elements of the installation with each other.

Ventilation control panel

Despite the complexity of the process control system, the development of technology makes it possible to provide an ordinary person with a control panel from the plant in such a way that from the first touch it is clear and pleasant to use the plant throughout its service life.

Example. Heat recovery efficiency calculation:
Calculation of the efficiency of using a recuperative heat exchanger in comparison with using only an electric or only a water heater.

Consider a ventilation system with a flow rate of 500 m 3 /h. Calculations will be carried out for the heating season in Moscow. From SNiPa 23-01-99 "Construction climatology and geophysics" it is known that the duration of the period with an average daily air temperature below + 8 ° C is 214 days, average temperature the period with an average daily temperature below +8°C is -3.1°C.

Calculate the required average thermal power:
In order to heat the air from the street to a comfortable temperature of 20 ° C, you will need:

N = G * C p * p ( in-ha) * (t ext -t avg) = 500/3600 * 1.005 * 1.247 * = 4.021 kW

This amount of heat per unit of time can be transferred to the supply air in several ways:

1. Supply air heating by an electric heater;
2. Heating of the supply heat carrier removed through the heat exchanger, with additional heating by an electric heater;
3. Heating of outdoor air in a water heat exchanger, etc.

Calculation 1: Heat is transferred to the supply air by means of an electric heater. The cost of electricity in Moscow S=5.2 rubles/(kW*h). Ventilation works around the clock, during 214 days of the heating period, the amount Money, in this case will be equal to:
C 1 \u003d S * 24 * N * n \u003d 5.2 * 24 * 4.021 * 214 \u003d 107,389.6 rubles / (heating period)

Calculation 2: Modern recuperators transfer heat with high efficiency. Let the recuperator heat the air by 60% of the required heat per unit time. Then the electric heater needs to spend the following amount of power:
N (electric load) \u003d Q - Q rec \u003d 4.021 - 0.6 * 4.021 \u003d 1.61 kW

Provided that the ventilation will work for the entire period of the heating period, we get the amount for electricity:
C 2 \u003d S * 24 * N (electric load) * n \u003d 5.2 * 24 * 1.61 * 214 \u003d 42,998.6 rubles / (heating period)

Calculation 3: A water heater is used to heat outdoor air. Estimated cost of heat from technical hot water per 1 gcal in Moscow:
S year \u003d 1500 rubles / gcal. Kcal=4.184 kJ

For heating, we need the following amount of heat:
Q (g.w.) \u003d N * 214 * 24 * 3600 / (4.184 * 106) \u003d 4.021 * 214 * 24 * 3600 / (4.184 * 106) \u003d 17.75 Gcal

In the operation of ventilation and heat exchanger throughout the cold period of the year, the amount of money for the heat of process water:
C 3 \u003d S (hot water) * Q (hot water) \u003d 1500 * 17.75 \u003d 26,625 rubles / (heating period)

The results of calculating the costs of supply air heating for heating
period of the year:

From the above calculations, it can be seen that the most economical option is to use the hot service water circuit. In addition, the amount of money required to heat the supply air is significantly reduced when using a recuperative heat exchanger in the supply and exhaust ventilation system compared to using an electric heater.

In conclusion, I would like to note that the use of installations with recuperation or recirculation in ventilation systems makes it possible to use the energy of the exhaust air, which makes it possible to reduce energy costs for heating the supply air, therefore, the monetary costs for the operation of the ventilation system are reduced. The use of the heat of the removed air is a modern energy-saving technology and allows you to get closer to the "smart home" model, in which any available type of energy is used to the fullest and most useful.

Modern technologies that have come to our country are pushing the population to also use the latest developments. Solar panels, room temperature controllers and other smart appliances can not only reduce costs utilities but also to maintain a comfortable temperature in the room. Of course, a recuperator for a private house cannot be called an innovation, however, saving money and heat energy is obvious.

This unit is a design similar to the house ventilation system. Their difference lies in the fact that conventional ventilation removes stale air from the room and fills it with fresh air. The recuperator performs similar actions, only brings heated warm or cooled air into the house. The air conditioner performs similar functions, however, it requires the presence of electricity and refrigerant - freon, the heat exchanger does without it. Heating or cooling of the inflow occurs due to the heat exchange of the primary and secondary coolant through the wall separating the air masses.

The main element of the air handling unit with a heat exchanger is a heat exchanger. The device is equipped with a thermal electric heater or a fan, check valves to prevent the movement of air in the opposite direction and many others.

The use of such a system allows you to return part of the heat energy, usually lost when passing through the ventilation ducts. Warm air masses freely circulate in the heat exchanger, come into contact with the cold flow through the separating wall and give the latter their thermal energy.

The surface type heat exchanger is a double-walled heat exchanger. One channel occupies the outgoing primary, the other - secondary, colder. The walls have a high thermal conductivity and are installed to prevent mixing of air flows of different temperatures. The outgoing air element runs along the box, the incoming air element runs across. As a result of heat transfer to cold air, heated air masses enter the house.

The inlet air temperature depends on the outgoing air temperature. The warmer the outgoing jet, the higher the inlet temperature.

Operating principle

The principle of operation of the heat exchanger is that it accumulates heat from the removed flow and communicates it with high efficiency to the air supply masses. This allows you not to spend money on and supply a fresh heated air element into the house.

The principle of operation of the system is determined by two principles:

1. Spent or stale air masses are removed from the room, pass through the ceramic recovery chamber and heat it up. At the same time, almost 97% of thermal energy is given away. When the recovery chamber is heated, the heat exchanger automatically switches to the fresh jet inflow mode.
2. The air passes through the ceramic recovery chamber, is heated by the heat accumulated in it, and is supplied to the house. Cooling down of the regenerator serves as a signal to turn on the fan in the exhaust mode.

Such a ventilation system with a heat exchanger allows you to reduce the consumption of gaseous, solid or liquid fuels, which may be necessary for the operation of other devices, and create comfortable living conditions.

Note! Installing a supply and exhaust air recuperator for the home will save up to 80% of heat in the room.

Advantages of a thermal power device

A thermal power device of this type has recently gained great popularity. There is no need to ventilate the dwelling in summer and winter, thereby releasing precious heat into the street. On a dusty summer day, the device will supply the room with clean atmospheric air, which will first pass through the air cleaning filter.

Also, there is no need to use the mentioned system in manual mode - the automation will do it for you. Cold masses in winter will heat up due to the outgoing warm flow, and hot summer days will cool down when heat is released to a cooler jet.

In addition, the system is characterized by such a number of advantages:

• saving money on heating;
• savings on separate exhaust fans;
• removal of unpleasant heavy odors;
• removal of dust particles;
• ease of operation and installation;
• low cost of use;

• process automation;
• long system life.

Even the periodic use of a heat engineering installation will make it possible to saturate the dwelling with clean atmospheric air masses without losing heat or, conversely, increasing the temperature regime.

High-quality ventilation

Installing a heat exchanger will keep the house clean, together with the influx of fresh outside air. Tobacco, fireplace or other smoke, carbon dioxide or other unhealthy emissions, harmful or unpleasant odors - everything is within the power of a rotary heat exchanger. The operation of the system has a beneficial effect on the human body, drying the air with high humidity, which is especially important for hypertensive patients, as well as people with atherosclerosis or cardiovascular diseases. In addition, high humidity threatens and other ailments.

economical heating

By installing a heat recovery unit, you will ensure stable savings not only of money, but also of the heat in the house. The outgoing warm flow will warm up the cold supply air to a comfortable temperature, which will significantly avoid unnecessary operation of the heating equipment. The heat engineering system carefully handles the heat entering its box, practically preventing it from escaping into the atmosphere. There is also no need to monitor the temperature of incoming air masses, the heat exchanger will do this, supplying them with only a small temperature difference compared to the outgoing flow.

Important! According to experts, the savings in electricity or any type of fuel for heating appliances range from 40 to 50%. Of course, at the same time, one should not neglect the high-quality thermal insulation of the room.

No additional ventilation

Gas stoves, fireplaces, water heaters and weeping metal-plastic windows require additional ventilation or periodic ventilation. The frosty and hot periods of the year greatly complicate this process: the first threatens to cool the room, the second - dust and hot dry winds with low humidity. If you decide to buy an air recuperator, you will ensure high-quality ventilation of the whole house, avoiding unnecessary financial expenses and installation of equipment for additional ventilation.

Silent and high-quality air purification

Atmospheric supply air in any case brings with it dust particles, dirt elements, diluted vehicle exhaust gases, chimneys and industrial enterprises. The air filter installed in the heat and power device will rid the house of incoming unwanted odors and dust particles. After high-quality cleaning, the atmospheric jet will fill the room not only with fresh, but also with clean air. True, the latter will be conditioned by the necessary regular maintenance of the air filter and other elements of the system.

Note! A clogged or uncleaned filter is a breeding ground for pathogenic bacteria. Its regular cleaning and periodic replacement will help the owner of the house to avoid infectious diseases of the respiratory tract.

Utilizers for an apartment or house have a high efficiency and low level noise, which ranges from 25-35 dB. This equates to the sound of an air conditioner.

Recuperator for a private house: types and characteristics

Supply and exhaust heat exchangers can have different design features. Pick up suitable option a sales assistant in any specialized store of heating devices will help.

There are such types of equipment:

• lamellar;
• rotary;
• roof;
• recirculating water.

All of them are designed to create a favorable indoor climate, whether it is an apartment, a large mansion or a country house.

Related article:

Types and features of devices, additional functions. Calculation of power according to the parameters of the room. Care tips.

lamellar

It is the most common type due to good performance, ease of operation and low price. This type of heat exchanger consists of fixed metal plates with high specific heat capacity and relatively low weight. The plates are collected in a kind of cassettes, which slightly resemble Bee hive. Atmospheric air passes through the box of the device with cassettes and then heats up or cools down, depending on the winter or summer time of the year. The condensate formed during operation is discharged through a specially available drainage outlet or channel.

Along with the listed advantages, the system has a certain disadvantage: the formation of ice in the box, which is especially evident in the autumn-winter period.

Rotary

A recuperator of this type carries out the inflow and outflow of an air jet due to the blades. The thermal power system has from one to two drive rotors, depending on the model. Outwardly, the installation looks like a cylindrical barrel with a drum. As air is pumped out of the room and the cylindrical duct is heated, the atmospheric mass is taken.

Advantages of this device:

• improved efficiency;
• increased efficiency;
• lack of condensate, and, consequently, discharge gutters;
• lack of ice;

• does not dry the air, which does not require additional humidification;
• adjustment of the amount of air supply and intake due to the speed of rotation of the blades.

However, there are also disadvantages:

• increased electricity consumption;
• rotating elements wear out faster than stationary ones;
• the need for additional exhaust to prevent possible mixing of incoming and outgoing air masses.

Note! Before purchasing a rotary heat exchanger, it is necessary to take into account its increased power, which can lead to an increase in the cross section of the room's electrical wiring.

Rooftop

This recuperator processes large masses of air. The expediency of its use can be explained by a large mansion, other residential or non-residential premises. The principle of operation is in many ways similar to the plate unit, however, the latter differs from the roof unit in smaller dimensions. Ease of installation of the device, low cost of maintenance and operation have made it indispensable in the ventilation devices of shops, repair shops, production areas. Installing such a heat exchanger on the roof generally excludes the penetration of any sounds and noise into the room.

Glycol heat exchanger

Glycol (or recirculation) regenerative apparatus combines the qualities of plate and rotary heat engineering devices. Its main difference from the previous ones is the use of an intermediate coolant. The last is a water-glycol solution consisting of propylene glycol or ethylene diluted with distilled water. The mixture has a high heat capacity, which makes it possible to utilize a large amount of heat, retains its working qualities at sub-zero temperatures. In severe low-temperature conditions, it is possible to replace the specified coolant with antifreeze. The equipment allows you to work simultaneously with several ventilation ducts, sleeves or hoods.

Recuperator for an apartment: calculation and overview of manufacturers

An apartment heat and power device will be the best purchase, especially if the home is located in a big city or the center of a metropolis. Automotive and industrial gases, street noise, heat or cold will forever remain outside the premises. The device will not only add mass to the apartment clean air, but will also save on heating, ventilation and cleaning of the incoming atmospheric flow. This is achieved by a simple exchange of heat between the supply and exhaust flows that have passed through a heat-insulating box with a cleaning filter.

Heat exchanger calculation

You can calculate the required heat and power device yourself, without resorting to the services of specialized companies. The calculation of the efficiency and effectiveness of the apparatus is determined by the knowledge of the cost of electricity for supply or exhaust masses. The calculation formula is:

Q \u003d 0.335 x L x (t 1 - t 2),

where L is the flow rate of air masses, t 1 is the temperature of the inflow, t 2 is the temperature of the outgoing masses, 0.335 is the regional coefficient.

Efficiency is calculated using the following formula:

E = Q x n,

where: Q - energy or electrical costs for heating or cooling the jet, n - efficiency of the device.

Helpful advice! Before you buy a heat exchanger for a private house or city apartment, you need to familiarize yourself with their types, technical specifications and principles of operation. It may be necessary to carry out preparatory installation work and make a project.

PRANA recuperator

This manufacturer of thermal power and ventilation equipment has been on the market for more than 15 years. Its equipment has a long service life, high efficiency and reasonable prices.

Operating characteristics of the device:

• type - lamellar;
• electricity consumption - 5-90 B / h, depending on the model;
• noise level - 25-140 dB;
• unit length - 500 mm;
• incoming jet - 115-650 m³ / h;
• outgoing jet - 105-610 m³ / h;
• Efficiency - 79-80%, depending on the model.

Whole the lineup it is completed with the remote control panel, works at atmospheric temperature from -15 to 45 °C. The relatively low price of an air recuperator, a significant retention of the set temperature during heating or heating, and small dimensions make this device one of the most popular, which is confirmed by numerous positive reviews. The Prana heat exchanger can be built into the wall of a room or installed outdoors. Installation of the device is quite easy and is carried out within 2-3 hours.

You can notice such a decentralized system only by the presence of a ventilation grill on the wall. Not the last positive quality are heat exchangers made of copper, which has an antimicrobial effect. The average price of an air recuperator for a house of this brand is about 25,000 rubles. The cost of high-performance devices is in the range from 50 to 110 thousand rubles.

MARLEY recuperators

The compact German heat exchanger is equipped with a ceramic heat exchange element, which allows the device to be operated even at a temperature of -30ºC. Its flushing and cleaning of the air filters is a simple operation that can be carried out by an ordinary user. The duration of continuous operation is about 6 months, after this period the control lamp will light up. Operation of the device near highways or in the central part of the city will force you to resort to more frequent cleaning. This operation does not take much time and takes 15-20 minutes.

You can buy an air recuperator for the home, the price of which is 24,000 rubles, in a specialized store. With a fairly moderate cost, the device has the following performance characteristics:

1. three phases of power - 15, 25 and 40 m³ / h;
2. consumed electrical power - from 3.5 to 8 W;
3. motor rotor - brushless;
4. noise level - 22, 29 and 35 dB;
5. heat recovery - 80-85%;
6. service area - from 60 m²;
7. external dimensions - 285-500 mm. The small dimensions of the unit allow you to install it in the wall.

The new line of the Marley manufacturer is the menv 180 heat exchanger, which differs from previous analogues in low power consumption - only 3 watts. Nice functional additions are:

• temperature, carbon dioxide and humidity controllers;
• improved aerodynamics;
• low noise level;
• waterproofing coating for work in wet residential or non-residential premises;
• high category of cleaning of the supply jet.

By installing a similar heat exchanger, the price of which is within 27,500 rubles, you will forget about street soot and exhaust gases, dust, fog and emissions from industrial enterprises.

DIY recuperator

Any craftsman can make an air recuperator for the house with his own hands. For this you will need:

• two sheets of galvanized steel;
• wood-layered box for the shell of the apparatus;
• cork pads;
• silicone neutral sealant;
• pressure controller;
• metal corners;
• thermal insulation mineral wool.

Also useful for work electric jigsaw, metal fasteners and connecting flanges.

Steel sheets must be cut into rectangular plates measuring 200x300 mm. To do this, you need within 3-4 m² of steel. Cutting must be done very carefully so that the cuts do not have burrs and notches. For this purpose, it is recommended to use a special tool - a grinder or a hacksaw for metal.

Then the plates are stacked on top of each other with a gap of at least 4 mm. This distance is ensured by gluing along the perimeter of each element of thermal insulation material (cork, wood or textolite). After laying the plates, the joints are treated with a special neutral sealant.

The housing is then fabricated and must be sized appropriately to fit within its plate structure. Holes are cut in the walls of the housing, into which pre-prepared plastic flanges are inserted, which must correspond to the diameter of the air ducts. All joints are also carefully sealed.

When the sealant dries, the plate structure is placed inside the body. External walls must be lined heat-insulating material, for example, foam or glass wool. Finished construction, in order to increase the aesthetic component, can be placed in a wooden box.

Note! Visually noticeable crevices and cuts in the box of a do-it-yourself recuperator for a private house must be filled with a silicone neutral hermetic mass.

Previously, recuperators and ventilation systems were installed only on industrial productions, coal and mining mines. Today, heat engineering devices for the utilization of exhaust gases are increasingly located in houses and apartments.

An industrial apparatus, or a do-it-yourself air recuperator becomes ours indispensable assistant. It serves clean chilled or warmed atmospheric air, cleans the house of dust and unpleasant odors and at the same time saves some money on heating the room.