What can be cooked from squid: quick and tasty

Air conditioners are always used to regulate the temperature in rooms. They can be found in residential buildings, shops, subway cars. They are reliable "suppliers" of coolness on hot days, cooling the air around them. However, such devices can be configured as heating devices and perform the functions of an ordinary heater, stove. In this article we will analyze the technical characteristics of the BK-1500 air conditioner.

Air conditioning

This device is capable of maintaining specific climatic conditions in a room or in a vehicle. The simplest models only lower the temperature by cooling the air - these are the ones used in every second office on hot days.

There are more sophisticated models that are capable of combining the functions of both cooling and increasing temperature. Such units have a built-in heat pump capable of playing the role of a heater. More sophisticated installations are equipped with filters and systems that purify the air entering the room, humidify it (for example, in a hot season), saturate it with oxygen, and can spray fragrances.

Views

According to their functions, as well as according to the place of use, all devices can be divided as follows:

• Central- are used in large-scale premises. It can be an indoor stadium, swimming pool or industrial plant, factory. For smooth operation, such an air conditioner needs an external source of cold: or cold water, or freon from an external unit. If the device performs the functions of a heater, then, accordingly, for its operation it needs a continuously supplied and heated hot water, for example from a central heating system.
• Precision- stand in rooms where it is necessary to maintain a strictly specified temperature. These are hospitals, kindergartens, laboratories, production related to high-precision technologies and chemical, biological reactions, as well as factories related to military production, communications, electronic support and others. Externally, the device looks like a monoblock filled with a fan, filter, water heater and electric heater. Capable of both cooling and heating air.
• Wine- work in rooms where wine is stored. Storage parameters must be observed very clearly: air temperature - 12 degrees, humidity - 60-70%. Only if these conditions are met, the wine can be stored for a very long period of time and not lose its taste and strength. On the contrary, a product stored in rooms with precise air control systems is considered more consistent, better quality and more expensive every year.
• Autonomous air conditioning systems are systems that operate with an external source of electricity. They can lower and increase the temperature, they function, as a rule, on freon.

If the air conditioner uses outside air for operation, then it is supplied, if the air is inside the room, then the unit is recirculated. Recuperative air conditioners are models that can work both ways. Above, we have disassembled the models at the place of their use. Next, we will talk about the installation methods, the features of various machines, as well as the technical characteristics of the BK-1500 air conditioner and other units.

What are the types of air conditioners?

According to the installation method and characteristics, it can be divided:

• Mobile- they do not require special installation... There are monoblock and mobile split systems. To use monoblock air conditioners, you need to remove the hose from the room and remove warm air through it. If a split system is used, a separate unit is taken out. The advantages of such air conditioners are that installation and maintenance are simplified here, and there are still no detachable connections for the freon line. Main disadvantages: high price, large dimensions, installation restrictions
• Window- consist of one block. Installed in a window or on a wall where an opening breaks through. Cons: they make a lot of noise, and because of the reduction in area, for example, windows, the room becomes darker. Pros: low price, easy to install and maintain, very high efficiency, there is a possibility of a very long use.

• Split systems- consist of two blocks: one - indoors, and the other - outside. The blocks are interconnected by copper pipes through which freon circulates. Today it is the most popular and most used type of air conditioner.
• Multi-split systems- this is almost the same as described above, but the number of indoor units can be two or more. The blocks are also interconnected by copper pipes through which freon circulates. Usually they are installed in multi-room premises or where it is necessary to ventilate strongly and continuously.

The BK-1500 air conditioner belongs to the window type. Its description will be below. Other models of the Baku Machine-Building Plant will also be presented, in fact, where this device was produced.

BK-1500: characteristics

Next, consider the technical characteristics of the BK-1500 air conditioner. In the window version, all parts are assembled in one all-metal case, and the air flow occurs through an opening with a valve, which is located at the rear of the machine. The air conditioner is usually mounted in a window (in fact, that is why it is called so) or in a hole that makes its way in the wall. In most air conditioners of this type, the condensate that forms does not drain to the street, but collects at the bottom of the unit, from where it is collected by special devices and dissipated over the surface of the condenser to improve heat transfer.

There is also a cyclical operation of the compressor - it periodically turns off, and then turns on again. This is done so that the mechanism does not overheat from continuous operation. The on and off is monitored by a thermal sensor. The latter is either mechanical or electronic.

Strengths

Let's name the positive qualities of these devices:

• low cost of installation or dismantling; the main thing is that there is an opening where the device will be located;
• there is no freon line, which means that there will be no refrigerant leakage;
• the function of the so-called supply ventilation, that is, the use of outdoor air, which allows it to be constantly updated by circulating through the device;
• long service life, easy to use.

But there are also weaknesses

Let's list them:

• very noisy;
• along with the noise, it should be noted that there is also poor thermal insulation between the indoor and outdoor parts of the same air conditioner; due to the passage of cold air through the apparatus, experts recommend dismantling the model for the winter season;
• and you still cannot install it in modern window frames, only if the necessary opening is provided in advance, during the manufacture.

BK-1500

So, before us is the BK-1500 air conditioner. We present its description below. This unit is capable of operating in two modes, which are set manually: ventilation and cooling. It is installed in a window opening or in a hole in the wall on a special wooden or metal frame. The device is divided into two equal compartments by a stainless steel partition (usually): an internal and an external one. There is a small hole on this partition, which is closed by a flap valve. This allows you to regulate the flow of fresh air in the room: open the damper - start the air. At the heart of the device: refrigeration unit, two fans (one - axial, the other - centrifugal), which have a common electric motor, as well as a control panel, which also includes a starting protection device.

A centrifugal fan, which is installed in the inner compartment of the air conditioner, draws in air from the room. At the same time, he is engaged in pumping cooled and dust-free air. That is, it works on the "take and give" principle. The fan motor is activated when the compressor is started, although it can be activated in ventilation mode and with the refrigeration system off.

Remote controller

The control panel, which has a start-up protection device, is, of course, the "head" of the entire model. It monitors the start and stop, controls the operation of the air conditioner, sets the desired room temperature and maintains it. A stable temperature around the device saves it from excess pressure and overload. On the outside of the console there is a panel with various knobs and switches to control the entire operation of this unit. To date, many technical characteristics of the BK-1500 air conditioner are outdated. Remotes, motors, fans, additional devices, produced in the Soviet Union - all this wears out, despite the very good quality.

Air conditioner BK 1500: instructions for use

• You can connect the device to the mains only with a plug, which is inserted into a special two-pole socket with an earthing contact.
• The air conditioner can only be started using the switch knob located on the remote control.
• Before restarting, a short break is required so that the device does not overheat.
• The air conditioner is able to operate even if the mains voltage deviates from normal values ​​(220 V) by several percent. In this case, a temperature of about 20-30 degrees above zero is desirable.

• It is necessary to monitor the cleanliness not only on the air conditioner, but also inside it. The unit should be cleaned of accumulated dust, sand and other debris, do not block the air flow both from the outside and inside the room, do not put things near the unit, especially those that can be damaged by the air flow. It is advisable not to stand close to a running machine in order to prevent possible colds and diseases, since the air flow is very strong and cold. Do not open doors and windows while the air conditioner is running to prevent drafts.

Despite the fact that today the BK-1500 air conditioner is considered a rather outdated device, it is easy to find instructions for it. She describes in detail and step by step all the nuances of the operation of this device. This is not due to the fact that the unit is difficult to use, but with a very strict tracking system at enterprises during the existence of the USSR, everything had to be clear, clear, detailed, correct.

Air conditioner BK-1500: specifications, photos, reviews

In general, reviews of such devices have always been positive. The air conditioner is easy to use, with light system, which, with even a little knowledge, you can fix it yourself. Many craftsmen based on BK 1500 created their own split systems or more powerful air conditioners. The very long service life and Soviet reliability are also noted by consumers.

Specifications air conditioners BK-1500, of course, are inferior to new ones, but for that time such units were "at their best". Perhaps, perhaps the main disadvantage is the large weight of the model.

Finally

Soviet technology has always been of high quality and has been long-lasting. The designs, albeit bulky and large in weight, were reliable in use. This also applies to the models of the Baku plant of the USSR. In this article, we examined the BK-1500 air conditioner. The photos clearly show that these machines are used very actively to this day.

The principle of dividing the air conditioner into external and internal units in split systems has significantly increased the ability to control the microclimate. The serviced area of ​​the premises has increased, the capacity of the cooling and heating systems has increased, etc.

The dimensions of the outdoor unit of the air conditioner directly depend on its capacity.

The higher the power, the larger the dimensions of the outdoor unit, but this should not be taken literally. Manufacturers have developed several standards for the dimensions of the external unit casing, each of which is sufficient to accommodate air conditioner units with power from and to. Crossing the upper power limit requires a large enclosure.

Structural elements of the outdoor unit that determine its dimensions

The main element of the air conditioner, which determines the dimensions of the outdoor unit, is the condenser of the cooling system, which becomes the evaporator when the unit is switched to heating mode. The higher the capacity of the air conditioner, the larger the area of ​​the evaporators and condenser.

A directly proportional relationship is already observed here. The area of ​​the condenser can be so large that two fans are required to blow it off. The dimensions of the compressor, monitoring and control devices, etc., have their influence on the dimensions of the outdoor unit of the air conditioner, but although it is insignificant in geometry, it may be noticeable for the weight of the unit.

When size matters

The size of the external block is great importance when choosing a place for its installation, when, for example, the dimensions do not allow it to be installed in an optimal position from the point of view of installation. The dimensions of the outdoor unit of the air conditioner are also reminiscent of its weight.

Usually in multi-storey buildings install air conditioners with a capacity of up to 9 kW, at which the maximum weight of the external unit is slightly more than 60 kilograms, which is a lot, and when installing air conditioners of higher power, the weight of the unit reaches 120 or more kilograms. For the installation of such a unit, a winch is already required.

A high capacity air conditioner requires more care to prevent overheating of the compressor. Let's give an example. In the usual electric kettle with a capacity of 1 kW, a liter of water boils in 3-4 minutes. When an air conditioner with a capacity of 5-7 kW is operating, in the same time, you can theoretically boil a bucket of water. Hence the importance of caring for external unit- cleaning the condenser surface from dust and dirt, especially such as poplar fluff.

We remind you that overheating of the compressor means, at least, additional losses of freon, and in the worst case, it will completely fail when it needs to be replaced and the entire split system needs to be repaired. Such work at its cost is tens of times higher than the cost of maintaining an air conditioner.

Air conditioning has long been a common household appliance. Of all the variety of devices for air cooling, the most popular are split systems, consisting of two unit-blocks, one of which is installed outside the room, and the other is inside. Indoor unit an air conditioner is a complex device that takes warm air from the room and sends it back already cooled.

Any air conditioner functions due to the properties of liquids to emit thermal energy when liquid is released and absorb heat when it evaporates.

The indoor unit is always placed indoors (usually mounted on a wall or ceiling), while the outdoor unit is located outside of it. Both units are interconnected by electrical wiring and a copper pipeline, through which freon continuously circulates during operation.

Regardless of the design and dimensions, the internal block of the split system necessarily has the following components in the design:

• Compressor. Responsible for the compression of the refrigerant and its circulation in a closed loop.
• Evaporator (heat exchanger). In this radiator, freon is converted from liquid to gas.
• Fan. Forces the air flow to the evaporator.
• Thermostatic expansion valve. Helps to reduce the pressure of the refrigerant in front of the evaporator. As a rule, it is a thin copper tube curved with a spiral.
• A set of filters. Retains dust and larger fractions of debris inevitably contained in room air.
• Air distribution system.
• Louvers responsible for the direction of the air flow.
• Temperature sensors.
• LED indicators.
• Information table.

Indoor unit design

Note! Since the indoor unit of the split system is often located at an unattainable height, the device always contains a remote control in the kit.

The external unit is simpler, and instead of the evaporator, the device has a condenser - a unit responsible for the phase transition of freon from a gaseous state to a liquid state.

Specifications:

Noise level dB: 22-43

Power (cooling): 2.5 kW

Power (heating): 3.15 kW

Room area: 25 sq.m

Power consumption: 0.730 kW

The size: 799x232x290 mm

Outdoor unit size: 699x249x538 mm

Temperature range:+15 ... + 46 ° C (cooling) -10 ... + 24 ° C (heating)

Indoor unit weight: 9 Kg

Outdoor unit weight: 24 Kg

Guarantee: 3 years (for outdoor unit 5 years)

Energy efficiency class: A

Description of the device

Benefits of Mitsubishi Electric inverter technology
... Energy efficiency class A
... Economical cooling function Econo Cool
... Built-in 12-hour timer for automatic on or off. The discreteness of the timer setting is 1 hour
... Automatic resumption of work after a power failure (auto-restart)

Affordable quality

The traditional quality of Mitsubishi Electric, inverter technologies that provide quick access to operating mode, low power consumption and no inrush currents, comfortable noise level, and everything described fits into reasonable prices - these are the characteristics of the Classic inverter series.

Where additional features or design don't play a big role, the Classic inverter is the best choice.

Antioxidant filter

The antioxidant filter has a catalytic coating of active substance.

This substance belongs to the group of flavonoids, which reduce free radicals to chemically inactive compounds.

It is very important that the active substance is a catalyst, that is, it does not itself participate in the reaction and is not consumed.

Therefore, the service life of the antioxidant filter is at least 10 years.

Typically, the catalysts are applied to polypropylene fibers in the form of a film.

However, during use, the film is quickly erased. Mitsubishi Electric engineers have embedded antioxidant molecules in ceramic fibers, which in turn are brazed into a polypropylene mesh.

Therefore, the antioxidant filter can be washed and wiped clean.

Automatic damper

The horizontal air damper closes automatically when the air conditioner is turned off.

At the same time, it completely hides the air supply hole and the elements of the air distribution system.

Lumped winding motor stator

The stator is characterized by the use of a lumped type winding as well as a special stator pole structure called "Poki Poki Core".

Such a winding can be laid on the core in the unfolded state.

Mitsubishi Electric's engine manufacturing method significantly improves efficiency.

Fan DC motors

To reduce power consumption, high-efficiency non-contact DC motors are installed in the indoor and outdoor units of air conditioners to drive the fans.

The rotor of such a motor has an external permanent magnet located on the surface of the rotor.

These motors have increased torque at low rpm, which has reduced the fan speed and reduced noise from the outdoor and outdoor units.

Internal knurled tube

In the manufacture of heat exchangers, a more expensive tube with internal knurling is used, which leads to an intensification of heat transfer and an increase in the energy efficiency of the system.

Today we will look at the main functions and technical characteristics of an air conditioner for household use that the user needs to know. This material will be useful to those who are going to buy an air conditioner, even if you will not carry out the installation yourself.

Air conditioner power

Power is the most important parameter of the device. There are three directions that are indicated by the manufacturer. These are cooling, heating and power consumption.

Cooling capacity (Cooling capacity)

Cooling capacity is the most important characteristic, which is expressed in kW or BTU. If everything is clear with a power in kW, then BTU is a British thermal unit. It was in them that the power of the air conditioner was previously measured.
The area that it can cool in normal operating mode depends on the power of the device. Normal mode means the operation of the device, without constant high loads on the compressor, which arise as a result of the incorrectly calculated power of the device and the size of the room.
Thus, if you install a split system designed to cool a room of 20 square meters, in a room measuring 30 square meters, then due to a lack of power, the device will always work at increased loads in order to ensure the set temperature, which leads to rapid wear of spare parts, and as a result, the earliest possible failure of the device.

When independently calculating the capacity of the air conditioner for the room, it should be assumed that 1 kW (3412 BTU / h) of the cooling capacity of the air conditioner is capable of providing 10 square meters. area of ​​a room with a standard height to the ceiling (2.5-3 m.). Thus6 for a room of 25 square meters the required power is 2.5 kW (approximately 9000 BTU).

Also, for self-calculation of the capacity of the air conditioner, you can use this table:

Heating power (Heating capacity)

Heating capacity is a similar characteristic of cooling capacity. It is measured and calculated in a completely similar way, but only for those devices that have such a function. Today these are the majority of household split systems, but there are also those models that do not support the heating function.

Power consumption

This parameter is often confused with cooling capacity or heating capacity, since it is also measured in kW. But this is a little different.
The power consumption of an air conditioner is a characteristic that expresses the amount of electricity consumed by the device. It can also be different (minimum, maximum, nominal) - and, as a rule, the cooling power is several times lower. Thus, with a cooling power of 2.5 kW, the air conditioner consumes about 0.8 kW - less than an iron, electric kettle and many other household electrical appliances.

Energy efficiency

The energy efficiency of an air conditioner is a parameter that contains two previous parameters. In fact, this is the ratio between them. This indicator is a technical characteristic of all modern electrical appliances and reflects energy efficiency (efficiency).

If we talk about energy efficiency within an air conditioner, then it is expressed in the ratio of the produced capacity (cooling or heating) to the consumed power of electricity. If we consider an example, then we take a device with a cooling capacity of 2.2 kW, and a power consumption of 0.6 kW. The energy efficiency ratio is 3.67.

In modern electrical appliances, it is customary to divide energy efficiency into groups, from A to G, the higher the class, the more economical in terms of power consumption the device is considered. In our example, this is 3.67 - which belongs to the "A" class (the most economical devices). Accordingly, devices of class B have more energy-consuming indicators than A, class C is more energy-consuming than B, etc.

Sound pressure value

Also one of the most important parameters, which in fact displays the noise level of the device and is expressed in dB. The manufacturer usually indicates the noise level of the outdoor unit, since the indoor unit often has several speeds, depending on which the noise level also changes. In addition, the indoor unit is always quieter than the outdoor unit.
It should be noted that the noise level of the outdoor unit also depends on its type and size. Let's say the block "seven", type "on / off" - has a noise level of approximately 45-55 dB. But another type of air conditioners, inverter, does not have a constant noise level - but a maximum one. Since given type air conditioners are designed in such a way that its performance is constantly changing during operation, then its noise level is dynamic. Therefore, it is customary to indicate only the maximum value.

Permissible operating temperature

The permissible outdoor operating temperature is a guideline that indicates at what temperature the device can be safely used. The operation of the air conditioner at a temperature that is higher or lower than the permissible one is fraught with a quick failure of the device.

For most household split systems that are not equipped with a heating function, the lower threshold for the outside temperature is -5 ° C. It is unlikely that you want to be cool when the temperature outside the window is such, but this is an important parameter. The fact is that at this temperature physical processes begin to change the structure of freon and compressor oil, which is why, immediately after starting, your compressor may jam. In addition, the drain hole of the drain hose freezes up - and all the condensate from the air conditioner will flow back into the room.

Distance between outdoor and indoor units of the air conditioner

This is the communication distance between the indoor and outdoor unit. Such a characteristic is often overlooked, but in vain. The fact is that if you reduce the length of the route from the recommended 5 meters (in most cases, exactly 5 meters is the recommended distance) - to 1-2 meters, then the parameters of the refrigeration cycle will change, which will lead to the earliest possible failure of the device. In such cases, the route is often twisted in a ring behind the outdoor unit. Not experienced craftsmen cut the track to the required length.

In addition to the minimum length, there is also maximum length communication routes. For household appliances, this is usually 15-20 meters, all that is above is already within the power of only industrial air conditioners. The longer the path, the lower the efficiency of the device. The load on the compressor block increases, heat loss increases.

Popular functions

Ventilation (fresh air supply)

In fact, only a duct air conditioner has the ability to ventilate a room, in view of its technical features... But most household air conditioners operate in this mode simply as a "Fan". The fan of the indoor unit turns on, but the compressor simply does not turn on in this mode. It is used for smooth air distribution around the perimeter of the room, for example, in the winter season, when warm air accumulates near the radiators and near the ceiling.

While some modern models nevertheless, they are equipped with such a function that really takes fresh air from the street and lets it into the room, but these are rather expensive and rare models that cost a lot and have a complicated installation.

Air dehumidification

In dry mode, the air conditioner reduces the amount of moisture in the air. Recommended for regions with high humidity.
It should be noted that the air dehumidification mode accompanies its cooling. This is due to the principle of its work. Warm air comes into contact with a cold heat exchanger, as a result of which condensate is released from the air, which goes into the drain hose of the device. Thus, there is less moisture in the air.

Air cleaning

Air purification often comes as an additional function to an air conditioner, although in fact it is already in every device, but to a different extent. To clean the air, a filter is placed in front of the heat exchanger in the air supply channel. Thus, all debris (fluff, hair, wool and other large particles) settles there. In air conditioners with an air purification function, an additional fine filter is installed, which cleans the air from such small particles as dust, pollen and even some harmful microorganisms.

Night mode

In night mode, the device, to reduce noise, goes into a mode of reduced fan speed, and slowly increases the air temperature by several degrees. Thus, creating a more comfortable sleeping environment.

Other characteristics

This is where the series of characteristics, which is important and may be of interest to ordinary users, ends. Of course, there are a number of characteristics that will be useful specifically for installation specialists, such as:

• overall dimensions and weight of blocks;
• tube diameters;
• maximum height difference;
• type of refrigerant;
• cross-section of power and interconnect cable;
• and etc.

But this will be enough for us.