The stability of the air conditioner at high and low outdoor temperatures
A significant part of the air conditioners of the split systems present in the Russian market of climatic equipment, in accordance with their passport characteristics, have a standard range of temperature conditions for the outdoor air (according to ISO 5151 for moderate climate): from –7 to 43 ° C (cooling: from 21 to 43 ° C; heating: from –7 to 21 ° C).
A significant part of the air conditioners of the split systems present in the Russian market of climatic equipment, in accordance with their passport characteristics, have a standard range of temperature conditions for the outdoor air (according to ISO 5151 for moderate climate): from –7 to 43 ° C (cooling: from 21 to 43 ° C; heating: from –7 to 21 ° C). Separate models intended for operation in subtropical conditions have an upper limit in an outer temperature of 52 ° C. There are also models of air conditioners allowed for operation at an outdoor air temperature below –7 ° C. At one time, the specialists of the workshop 7 of the Elemash plant was given the task of experimentally to investigate the stability of the air conditioning system of the wall-type in the cooling mode at high temperatures of the outdoor air (1st testing stage) and the functioning of the air conditioner in the heating mode at low temperatures of the external air (2nd test stage). In this case, the outdoor air temperature was set both within the permitted range, and in excess of the upper (when cooling) and lower (when heated) boundaries. General conditions for testing the passport characteristics of the tested air conditioner of the wall-type of wall type-see. table. one.Testing equipment:#10063 Climatic Chamber US830/80 Climatic Chamber (production of Angeloantony, Italy) with Kratos software;#10063 Temperator MR180 (production of Yokogawa, Japan).one.2. The mode of operation and the set of outdoor air parameters:#10063 The operating mode of the air conditioner. cooling (1st test stage); Heating (2nd stage of testing);#10063 The temperature of the outer air. stage 1: 35, 43, 52, 60 ° C DB; Stage 2: –35, –15; 0; 15 ° CDB. Next, we list the registered characteristics of the functioning of the air conditioner. Stage 1 (cooling mode at high outdoor temperatures): air temperature at the inlet to the inner block, ° C; air temperature at the exit from the inner unit, ° C; the temperature of the tube at the inlet to the heat exchanger of the inner unit, ° C; the temperature of the tube at the output of the heat exchanger of the inner unit, ° C; the temperature of the tube at the inlet to the heat exchanger of the external unit, ° C; the temperature of the tube at the output of the heat exchanger of the external unit, ° C; temperature of the lower part of the compressor, ° C; The temperature of the upper part of the compressor, ° C. Stage 2 (heating mode at low outdoor temperatures): air temperature at the entrance to the inner block, ° C; the temperature of the cart of the spirit at the exit from the inner block, ° C; the temperature of the tube at the output of the heat exchanger of the inner unit, ° C; the temperature of the tube at the inlet to the heat exchanger of the inner unit, ° C; the temperature of the heat exchanger of the external unit, ° C; The temperature of the upper part of the compressor, ° C. Test results 2.one. The results of the air conditioning tests at stage 1 (cooling mode at high outdoor temperatures) are given in the table. 2 and on rice. 1 and 2. 2.2. The results of the air conditioning tests according to stage 2 (heating mode at low outdoor temperatures) are given in the table. 3 and on rice. 3. Conclusion 3.one. The outdoor temperature has a very significant impact on the operational characteristics of the air conditioner, including its actual performance. 3.2. The air conditioner retains stable operation in cooling mode at external air temperatures exceeding the upper limit of the recommended temperature range. 3.3. When the air conditioner is operating at high outdoor temperatures, its operational characteristics, including the air temperature difference at the input and exit from the internal unit, worsen. Accordingly, the actual cold-production of the air conditioner is also reduced. 3.4. When the air conditioner is operating at high outdoor temperatures, the temperature in the compressor increases significantly, which, over time, can cause the protection against overheating and, accordingly, automatic shutdown of the air conditioner. 3.5. The air conditioner retains stable operation in heating mode at the outer air temperature below the minimum temperature recommended by the manufacturer of the equipment. 3.6. The lower the outdoor air temperature, the lower the actual heat-production of the air conditioner. 3.7. Regular maintenance and cleaning of filters and heat exchangers allows you to improve the heat exchange processes occurring in the air conditioning, and thereby ensures more sustainable air conditioning at the outer air temperatures that go beyond the values recommended by manufacturers of air conditioning equipment.
Whether the air conditioning will fail if it works indoors with open windows open?
Web developer, special engineer. “Automated processing systems.
This is a fairly common misconception. One of the conditions of trouble.free operation of the air conditioner is compliance with the temperature regime specified in the documentation. It is important to note that it is indicated both for the external unit (temperature on the street) and for internal (room temperature). And it can be different for different operating modes of the air conditioner: heating, cooling, drying, cleaning, and t.D.
Thus, when working in the temperature conditions provided for by the manufacturer, open windows do not threaten your air conditioning, but avoid this only for economic reasons. However, I personally would advise sometimes to open the windows, since contrary to another delusion, the air conditioner does not take the air from the street, and does not replace the necessary ventilation of the premises.
Features of the air conditioner for heating
Everything is very simple! The main reason is that when working on heat on the external unit (or rather on its radiator), condensate (water) is formed, which should not be overlaid. The rotation of the internal unit fan regulates the freem condensation temperature in the system. While the fan is “standing”, the gas temperature rises in the internal block (heat exchanger heating occurs). In this case, the temperature parameters are regulated to maintain the processes of evaporation and condensation of the refrigerant (freon).
When stopping the fan of the internal device, you can hear that the air conditioner compressor continues to work. Thereby increases pressure and, in turn, the temperature of the gas in the system.
Thus, the heat exchanger of the inner unit warms the air well in the room. And at the same time you will not feel a cool flow. The fan does not stop in cooling mode, since the evaporation of the freon occurs in the inner block. At the same time, the formation of ice does not occur on it (of course, with a good system and compliance with all operating conditions).
Therefore, the periodic stop of the internal unit is a “normal” operation of the air conditioner in heating mode. And be sure that the air conditioner is correctly included in heat.
With the onset of cold weather, the operation of the split system in heating mode becomes relevant. Next, we will consider such a useful air conditioner as heating the room.
The principle of operation of the split system for heating or cooling practically does not change. It is based on the heat transfer of condensation and evaporation (boiling) processes of freon. And important defendants in these processes are heat exchangers. two metal radiators. In one freon evaporates (boils), secreting cold (absorbs heat), in the second Freon condenses, releasing heat. They are called, respectively, the evaporator and capacitor. The change of “roles” of heat exchangers determines the split system will work for cooling or heat.
Let us explain: when working split systems in the cooling mode, the radiator in the internal block “takes on the role” of the evaporator, and the radiator of the external unit-the capacitor. Когда кондиционер работает в режиме обогрева ситуация обратная: радиатор во внутреннем блоке — конденсатор, а в наружном блоке — испаритель. To simplify the perception of information, we recall that the evaporator “cools”, the capacitor “heats”. No heating plants or other additional air heating devices in standard split systems.
An inquiring user can pay attention to the plate on the air conditioner, which displays information about the power consumed. This information states that when working for heating, the split system consumes a little more electric energy than when working for cooling. This difference is explained by high pressure of the freon in the system when working in heating mode. Increasing pressure leads to an increase in the load on the compressor, and this, in turn, leads to an increase in current consumed.
Conclusion from the above: When switching a split system from the cooling mode to the heating mode, you change the inner and outer blocks with roles.
Features of the work of the split system in heating mode.
This article is designed to reveal the features of the work of the split system for heating the premises. Despite the fact that in the operating instructions for “Russians in white” everything that is listed below is described, our phones are torn from calls in the autumn-spring period.
This situation arises when the heating season has not yet occurred, and it is already cold outside, or heating has already been turned off, but winter tried to take Revansh. The natural desire of a happy owner is to include your favorite split system in the heating mode. Choose the necessary function on the remote control Suddenly, the peak-shred bats and air conditioning stopped opened the blinds, some LED flashes or burns, and the fan of the internal unit simply does not rotate Panic! What happened? There is nothing! So it should be.
Air conditioning, when switching or switching to heating mode, is necessary for some time (3-8 minutes) to “prepare”. This function is called “Hot Start”. in Russian “hot start”. The engineers came up with it for a reason.
When the air conditioner is included in the heating mode, the internal unit fan is launched with a delay, waiting for the moment when the internal unit heat exchanger warms up well. This is done so that the air flow when leaving the inner block has a comfortable-tapped temperature.
It is unlikely that anyone will like it when a fan begins to blow in the cold room, creating an unnecessary draft. And in the heat, the “draft” will only please, so the split system in cooling mode starts the fan of the internal unit immediately, without waiting for the compressor starting.
In some models of air conditioners, the reason for the delay in the launch of the internal unit fan in the heating mode is the function “Defrost”. “defrosting” or “ichtha”. This function is turned on at the time of turning on the air conditioner for heat if the heat exchanger sensor “decides” that the heat exchanger was frozen (icing, covered with ice). For some time, the air conditioner (without turning on the internal unit) works for cooling, warming the heat exchanger of the external unit. After a few minutes, it turns on in heating, and how all the rest it waits a little until the heat exchanger of the inner unit is heated to turn on the fan and directly start the heating of the room.
The rehabilitation function can periodically turn off the internal unit with prolonged operation of the air conditioner for heating. That is, the air conditioner, working for heating, stops, “stands” for several minutes, after which it starts and continues to heat. This is a normal phenomenon if stops do not occur often (every 5-15 minutes).
Summarize.
Including air conditioning in heating mode, postpone the stopwatch, thermometer, remote control, phone to the side. Move away from him, spend half an hour on yourself, you probably have a lot of household chores. After this period of time, the air conditioner will work and delight you with a pleasant warmth.
If this did not happen in half an hour, call us or to another service for repairing air conditioners. But first, make sure that you have chosen the correct mode on the remote control, and the air conditioner reacted to your command with a sound signal. Otherwise you have to pay a false call.
Overview of the personal air conditioner Evapolar Evalight | Reviews | DNS club
On the eve of the hot summer, it’s time to talk about climatic technology and ways to combat heat, and in this review we will consider the personal evaporator Evapolar Evalight.
Before proceeding to the review of the device, let’s talk about the principle of its action. we all remember (passed) from the school physics course that evaporation occurs when the heat is absorbed. The usual air conditioners use the same principle, only chemical refrigerant evaporates in a closed system and a lot of energy is required to compress the refrigerant to a liquid state, some of which passes into heat, which requires its removal and installation of part of the equipment outside the cooled room.
The hero of today’s review, the air conditioner Evapolar Evalight cools the air, evaporating ordinary water. Consider the pros and cons of such systems.
On the one hand, environmental friendliness and energy efficiency. a lot of energy is not required to create air flow, as a cooling element, instead of harmful chemical compounds, ordinary water is used, and there is no need to remove excess heat, as in ordinary air conditioners. Together with cooling in such a system, the air is moistened, which is well affected by the skin and hair.
On the other hand, there are quite large sizes of such systems, because the larger the surface area with which the water evaporates, the stronger such air conditioning can cool the air, the compact system is simply not able to cool the air to the required temperatures.
Comparison Evapolar Evalight with a conventional air conditioner
But time goes on, technology develops and change the usual state of things. So Evapolar Evalight was not without nanotechnologies. “paper” from basalt fiber is used as an evaporative filter in the air conditioner. Nanobumag is distinguished by an impressive capillary effect, water rises to 30 centimeters without any external intervention.
Being 1000 times thinner than pulp, the basalt fiber has a diameter of only 40 nanometers, this allows the material from the nano.row to import up to 700% of its weight, and even absorbing so much of the “nanobumag” liquid does not swell. From such paper, excellent evaporative plates are obtained, which themselves are moistened with water and actively give moisture.
Evaporation moisturizes and cools the surrounding air.
It was from such fibers that Yevgeny Dubova and Vladimir Levitin (inventors and creators of the air conditioner) created evaporating plates, providing uniform and intensive moisture of the cooling cartridge. Starting experiments with “paper” from the basalt fiber back in 2013, about then they put forward the concept of local cooling, and an alternative to large air conditioners and became an Evapolar mini-confusion gadget that generates a “microclimate” per person.
Packaging and equipment
As expected, the air conditioner is supplied in a box of eco.friendly cardboard.
All information both on the packaging with the instructions and on the manufacturer’s website is presented in English (it is possible that I got an advertising sample for a review, but we will not go into the field of guesses).
Nevertheless, the packaging itself is quite informative. there is also a “gentle cooling of the sea breeze” and the moisturizing and purification of air, it is not forgotten about the environmental friendliness of the device: the absence of a freon or other toxic elements.
There is only a table of indicative efficiency of the device from temperature and humidity. when buying such a device, it would be nice to evaluate its usefulness in your climatic conditions. Such a table is in the instructions on the site, and back to it at the test stage.
A thanksgiving message from the creators, instructions for use and guide to quickly launch. Then 2-ampere network charger and one and a half meter USB cable.
Appearance and maintenance
Black gratings of the duct and the white case look very stylish, and when working, the tank with water is highlighted (the color and brightness of the backlight is regulated). A micro-USB connector is hidden in the corner of one of the grilles to power the device.
The water tank is removable, you can fill with water without stopping the air conditioner.
The only replaced detail of the device is the evaporator cartridge from the basalt fiber. The basalt fiber does not wear out, but during operation it is clogged with filtered dust, which leads to a decrease in the efficiency of evaporation and the cooling properties of the device. Approximate deadlines for replacing the cartridge 6-12 months.
A 120 mm fan is responsible for the “wind”, and taking into account the fine.fingered structure of the evaporative filter, the entire device works quite noisily, and when the fan speed is reduced with a decrease in noise, the cooling ability of the device decreases and the coolant is reduced.
Finding a place for the air conditioner on the work table will not be. the device turned out to be compact, the length of each side is about 18 cm.
Evapolar Evalight air conditioning testing
For instrumental observation of the test, the EA2 EN208 household weather station was used, which can measure the temperature and humidity of both indoors and outside.
To verify the external unit, it was placed next to the internal-discrepancies in the readings of relative humidity are 1-2% (at times, mostly indications coincide) and no more than 1 ° C in temperature readings, in most measurements, the discrepancies did not exceed 0.2-0.3 ° C.
After turning on the Evapolar Evalight, it quickly goes to the operating mode of cooling, in the photo above the EA2 weather station, the temperature and humidity in the working area of the air conditioner, 22.9 ° C, respectively and 77%, an external sensor, at the opposite end of the room, shows 25.2 ° C and 60% relative humidity.
Over time, the temperature dropped a little, and the humidity in the working area rose to 83% and at the opposite end of the room where the external sensor of the weather station lay, the humidity of the air increased slightly.
Yes, 25 ° C is not yet at the same temperature when it is already difficult to survive without air conditioning, but the sunny side and a couple of computers are added about 10 ° C to street (in the unheated season) and usually I begin to use air conditioning long before they are on the street.The real hot days.
How to keep your house cool in the summer without AC
However, in the next test, we bring the conditions to the hottest summer days.
Repair and replacement of thermal attires
To make measurements, you need a regular thermometer or ohmmeter. The data taken from the rental board taken is compared with the readings in the technical passport of the device. If there are suspicions that there is a malfunction, then repairs are carried out:
The replacement of the sensor is easy to do. Select a similar element suitable for denominations. usually 5 or 10 kOhm.
The condition of the air conditioner sensors is indicated by the presence of resistance, which depends on the temperature. On average, the standard is 25 ° C at 10 kOhm.
Not all split systems are equipped with many temperature sensors and an automatic disconnection system. When choosing climate technology, it is worth paying attention to their number, as they extend the life of the device. Air conditioners equipped with such elements of self.control and self.diagnosis at a minimum are controlled by the user and break much more often.
Hyundai Elantra 2009, gasoline engine 1.6 l., 105 l. with., front.wheel drive, mechanical gearbox. observation
Tell me 30 on the street and from my air ducts shows only plus 22. Car stood on xx
For the idle move without movement. the norm
I checked now. At a temperature of 27 on the street, speed 2000 humidity 90 seems to be 5.5 degrees, air direction to itself. With idle speed 800, it seems at a moisture content of 90 12-3 degrees! Recirculation is not turned on. This is the norm?
Yes, that would be max. There was a return. you need to turn on the circulation inside the cabin. I checked yesterday at myself. on x.X. On the street is 31C, the 1st blowing speed on itself is 7C, if the fence outside the air is 11-12C.
I checked now. At a temperature of 27 on the street, speed 2000 humidity 90 seems to be 5.5 degrees, air direction to itself. With idle speed 800, it seems at a moisture content of 90 12-3 degrees! Recirculation is not turned on. This is the norm?
In my opinion above 10-12 g, these at the output can harm, it is easy to catch a cold when the heat on the street for 30-35 will be a strong difference in temperature.
This year, at the beginning of summer, on the way from Zhytomyr to Kyiv, he turned on the condo, but he gave out the wrong one, it was not hot, but did not give coolness.I called the “specialists”, and they tell me that I need a complete check and refueling of the air conditioner, and this is somewhere around 650 UAH. He called another, and he says that you just need to refer.I arrived, refilled for 200 UAH. than 100g of Frion entered.Before refueling, he issued 19 degrees, and then, 5 degrees (with a plus of course) and everything is fine.So they know how to breed with us.
How to Install a Ductless Mini-Split Air Conditioner | This Old House
In fact, this is not a divorce, but the right approach. At one time he worked on air conditioners, split systems, in short in the topic. What you did cheaply is a finger at the sky. Over time, the refrigerant flows into the atmosphere, no more than 15% per year of the total is considered normal. Some small part of the oil leaves along with Freon. In your cheap case, most likely you were refueling the kondei without using an automatic station, which pumps the refrigeon, analyzes its amount, separates the oil from gas and then refuel the system again with the addition of the desired amount of oil and the refrigerated. In this case, it is not possible to find out for sure, with the connection of only the manometric manifold, how much the gas is needed and whether it is necessary to add the oil into the system, therefore, it is possible to refuel, which leads to an increased load on the compressor and reduce its resource. If you were given a refueling using an automatic station, into which you only need to enter the brand and model of your car and it will do everything yourself, then there is no reason for worries, if you were referred with the help of a manometrical manifold (two manometers with hoses), then this is a lottery, then this is a lottery If you have not been refined, then it does not matter, if you re.display, then the compressor resource is reduced. Return by more than 15 grams already reduces the compressor resource.
Compressor repair is much more expensive than the “correct” refueling ! So you are completely right! Well, those who did not understand the topic let them refer them to dohren’s money)))
In fact, this is not a divorce, but the right approach. At one time he worked on air conditioners, split systems, in short in the topic. What you did cheaply is a finger at the sky. Over time, the refrigerant flows into the atmosphere, no more than 15% per year of the total is considered normal. Some small part of the oil leaves along with Freon. In your cheap case, most likely you were refueling the kondei without using an automatic station that pumps the refrigeon, analyzes its amount, separates the oil from gas and then refuel the system again with the addition of the desired amount of oil and the refrigerated. In this case, it is not possible to find out for sure, with the connection of only the manometric manifold, how much the gas is needed and whether it is necessary to add the oil into the system, therefore, it is possible to refuel, which leads to an increased load on the compressor and reduce its resource. If you were given a refueling using an automatic station, into which you only need to enter the brand and model of your car and it will do everything yourself, then there is no reason for worries, if you were referred with the help of a manometrical manifold (two manometers with hoses), then this is a lottery, then this is a lottery If you have not been refined, then it does not matter, if you re.display, then the compressor resource is reduced. Return by more than 15 grams already reduces the compressor resource.
Mechanic23 people say business! Last summer/autumn, he was refounded, today he could not stand it turned on the condo. he barely blows cold, only at speed accelerated more and less, after a couple of hours he stopped working, opened to check the hood to check the tube, as a result, it is hot like everything under the hood.I went to the air conditioners, somewhere the wire on the compressor interrupted, eventually conducted a new one and earned it again, at the same time checked the pressure, it turned out to be weak as I was told for idle, the air conditioners offered to drain Frion on the scales and see how much in the system. As a result, 870g merged instead of 620 as expected. They redeshed the air conditioner, poured 620 g as required, as a result, at the output at the second speed and two thousand revolutions of 6-7 degrees on the street approximately 25-28 degrees (humidity Alexander do not know). But in comparison with those 6-7 degrees that are now coming out, I understand that before that the air conditioner did not work as it should I concluded that it got off with a slight fright, but I could lay down the compressor Some can say that there are a lot of 7 degrees, but for 20 years Cars in which the radiators and the evaporator have never been cleaned, I think it is already perfect.
In fact, this is not a divorce, but the right approach. At one time he worked on air conditioners, split systems, in short in the topic. What you did cheaply is a finger at the sky. Over time, the refrigerant flows into the atmosphere, no more than 15% per year of the total is considered normal. Some small part of the oil leaves along with Freon. In your cheap case, most likely you were refueling the kondei without using an automatic station, which pumps the refrigeon, analyzes its amount, separates the oil from gas and then refuel the system again with the addition of the desired amount of oil and the refrigerated. In this case, it is not possible to find out for sure, with the connection of only the manometric manifold, how much the gas is needed and whether it is necessary to add the oil into the system, therefore, it is possible to refuel, which leads to an increased load on the compressor and reduce its resource. If you were given a refueling using an automatic station, into which you only need to enter the brand and model of your car and it will do everything yourself, then there is no reason for worries, if you were referred with the help of a manometrical manifold (two manometers with hoses), then this is a lottery, then this is a lottery If you have not been refined, then it does not matter, if you re.display, then the compressor resource is reduced. Return by more than 15 grams already reduces the compressor resource.
Air conditioning work in winter in heating mode
Now let’s move on to the main thing and find out whether it is possible to launch a split system for heating the rooms when a significant “minus” is on the street.
At what external temperatures is it possible to work in heating mode
Most modern air conditioners can work for heating only on condition that the temperature outside the window is not lower.7 ° C15 ° C. accurate information on the lower temperature threshold can be found in the instructions for the device. If you use the device for lower thermometer, the heating power will be less. In addition, there will be a threat of icing of the drainage system and capacitor, which inevitably leads to breakdown of the entire split system.
On the
But depending on the refrigerant and the type of compressor, some air conditioners can work in heating mode and at lower temperatures, for example.15 ° C- 30 ° C. We are talking about advanced models of inverter split systems.
For what reasons, the air conditioner does not work for heating
If the device provides for the possibility of working on the heating of the room, but it does not include in this mode, there may be a breakdown of the compressor, drainage system or valve, which ensures the refrigeration circuit switching to heating. There is also the likelihood of a refrigerant leakage in the places of adhesive tubes. In this case, it is worth calling the craftsman for the repair of climate equipment.
Another popular reason is the temperature of the window below the permissible minimum, so the air conditioner can only slightly increase the level of heat in the room.
If the device works normally, but the air does not heat up in the room, then perhaps you just need to wait a bit. sometimes the system needs extra time so that the internal unit warms up. In winter, this is a completely normal phenomenon.
It can also help to understand the causes of the malfunction can also be a display of the internal unit, which highlights errors in the operation of the split system.
If you independently install and eliminate the problem yourself, it is better to contact a specialized service center.
Features of the compressor
The compressor is one of the most complex mechanisms and elements of the refrigerator. It is practically the heart of the air conditioner. When the compressor is operating by almost 3-5 times, the pressure of the refrigerator agent increases, its temperature changes from about 15 ° C to 90 ° C changes. A refrigerator entering the compressor must be gaseous, and preferably if 3-5 ° C is higher than normal. All these factors, combined with the complex design of the compressor, apply an imprint on the reliability of its design.
The compressor in the air conditioner in 95% of cases is part of the external unit, which is usually installed in the open air. When the compressor is working, a refrigerated agent is compressed, as a result of which it heats up. In this case, the refrigerator agent gives part of the heat to the compressor with which he is in contact.
Therefore, heating the compressor is a logical process, while its overheating is a consequence of the incorrect operation of one of the main or auxiliary elements of the refrigerator. The normal temperature of the compressor body should be within 60-90 ° C, depending on the temperature of the outdoor air (if the external air conditioner unit is on the street).
The reasons for overheating
Insufficient refrigerant in the refrigerator. For any reason, a refrigerator agent may or unprocessed (if the refueling and its leak through leaks occurred before this). During the operation of many elements of the external unit, vibration occurs, which over time can lead to microcracks on copper pipelines or weakening of threaded joints. A refrigeration agent can occur through such leaks. Its lack, in turn, leads to the fact that in the evaporator of the refrigerated agent it becomes not enough, the temperature of the steam at the entrance to the compressor increases, and at the output it can reach values of 115-120 ° C, which will lead to the compressor overheating.
Damage to the capacitor fan. This fan blews the condenser heat exchanger, thereby helping to quickly and completely cool and fondance the refrigerator. Its breakdown leads to a decrease in the performance of the heat exchanger of the capacitor up to the complete absence of condensation. Accordingly, the further receipt of such a refrigerator agent for throttling, and then to the evaporator, will not lead to cooling the air in the room to the desired temperature. At the same time, the compressor will work with increased condensation pressure, which will also cause compressor overheating.
Pollution of the heat exchanger with fluff and other mechanical components. This leads to a deterioration in condensation, while the signs are similar to paragraph 2.
When installing an external unit, the latter is usually attached to the wall. The small distance of the rear wall of the block from the wall leads to a limitation of air flow through the heat exchanger of the capacitor, a decrease in its performance, and then as in paragraph 2 or 3. The distance from the wall of the building should be equal to the thickness of the block itself, but not less than 10 cm.
What breaks in the compressor when overheating
Almost always in air conditioners, compressors are used in the airtight execution of the case. This means that the compressor itself and the electric motor, which drives the compressor shaft, are in a single, hermetically sealed, case. In this case there is oil, and a refrigerator agent on a suction pipeline enters the housing. Partially incoming refrigerator agent cools the compressor windings, but with a significant overheating, over 110 ° C, the electric motor windings begin to gradually collapse. The windings consist of a wire covered with a protective varnish on the outside, which is destroyed at elevated temperatures, and interitral sparking appears in the windings and, in the end, the electric motor burns out. The compressors provide for overheating protection relay, which disconnects the compressor, and when cooling again turns on. But this does not mean that everything is fine with the compressor electric motor, and in the near future, if you do not eliminate the malfunction, it will fail.
Conclusion. In any case, if the compressor overheats, you need to look for the reason, and if it does not find it, the compressor will break in the near future.
Freon condensation temperature
I bring to your attention a brief excursion to familiarize with the processes of the air conditioner, in particular the condensation process and the freem condensation temperature, which is required for the operation of the air conditioning system and from which the cooling of our premises is envious.
The main load in the air conditioning system lies on the condenser, it is responsible for air cooling, freon condensation temperature and prevents the possibility of hypothermia.
Condensation will never occur until the freem temperature reaches the necessary, to boil, level. And she will not reach this level until she gets the right pressure.
Thus, the process of cooling the air begins with the injection of the pressure of the freon into the heat exchanger, in the condenser. At this stage of work, the freon condensation temperature increases and the boiling process occurs, thereby, the freon is converted into a liquid state, this is the main function of the capacitor.
This process is accompanied by the formation of heat. To increase its (heat) discharge, the capacitor is blown by a special fan. Subsequently, the air that passes through the capacitor is heated.
Upon completion of the passage of the capacitor Freon in a fluid state and under high pressure enters the heat regulatory valve. In turn, this heat regulatory valve is assigned the function of lowering pressure. With a decrease in pressure, the freem condensation temperature decreases and the process of boiling stops. Thus, Freon boils and evaporates converting back into a gas state.
For evaporation, Freon absorbs the heat of the same air located indoors with which the fan blows the capacitor. Using this process, air is cooling. Further, Freon is in a state of gas and with low pressure goes to the compressor and the cycle is reproduced.
