Air conditioning in the operation process is also the principle of air conditioning refrigeration and heating principle is actually not very different, we should all know that air conditioning in the operation process will be used in the refrigerant, air conditioning components is through the role of the refrigerant will be air conditioning refrigeration and heating, the following is the principle of the air conditioning I organize the detailed working principle of the air conditioning, welcome to read!
Refrigerant is used in all parts of the air conditioning system.
Refrigeration principle
Air conditioning in the process of its cooling principle and heating principle, although to a certain extent is the same, but in some details they are exactly the opposite. In the air conditioning schematic diagram, I will first introduce what is the principle of air conditioning refrigeration.
1, air conditioning in the working process, the compressor will be gaseous refrigerant compressed into a high temperature and high pressure gas, after which it will be transported to the condenser;
2, high temperature and high pressure refrigerant through the condenser condensation will be the heat dissipation, become low temperature and high pressure refrigerant liquid, the heat emitted from the refrigerant, will be discharged through the fan through the outdoor unit;
3, became a liquid refrigerant through the fan through the outdoor unit;
4, the refrigerant will be discharged through the outdoor unit;
5, the refrigerant will be discharged through the outdoor unit.
3, into a liquid refrigerant through the pipeline into the air conditioning capillaries, through the capillary throttling, and then be transported to the air conditioning evaporator;
4, air conditioning evaporator space is large, the refrigerant through the narrow capillaries into the evaporator, will rapidly heat absorption, then the indoor temperature will gradually decrease, until the refrigerant again into an isothermal and isobaric gas, it will be again When the refrigerant becomes an isothermal gas again, it will enter into the compressor and work in a cycle.
Heating principle
We all know that air conditioning in addition to refrigeration can also be heating, above I have introduced the principle of air conditioning refrigeration, the following I'll go on to introduce you to the air conditioning is how to make heat.
1, air conditioning in the heating of the initial steps and the principle of refrigeration is the same, are compressed by the compressor refrigerant into a high-temperature, high-pressure gas, after which it will be transported to the condenser;
2, the refrigerant reaches the condenser, the principle of its work has appeared to be a certain change in air conditioning in a four-way valve, air-conditioning in the heating of the air-conditioning valve will change the direction of the air-conditioning cooling When the air conditioner is heating, the four-way valve will change the direction of heat dissipation. In the condenser, the refrigerant undergoes condensation and heat dissipation, and the heat emitted will not be discharged by the outdoor unit, but will be sent to the indoor through the fan rotation and the air ducts to realize the warming of the indoor temperature;
3. After the condenser heat dissipation is completed, the condenser will be sent through the pipeline into the air-conditioning capillaries, and will be throttled and decompressed, and then be transported to the air-conditioning evaporator;
4. The condensate evaporates and absorbs heat in the evaporator, and it will then evaporate and absorb heat. The condenser evaporates in the evaporator and absorbs heat, and the heat it absorbs is not the heat of the indoor temperature, but the heat of the outdoors, which is the reason why we feel a cold wind blowing when we stand next to the air conditioner's outdoor unit in winter.
Different types of air conditioning products in the process of its working principle is different, above I briefly introduced the principle of cooling and heating of air conditioning, we look at the air conditioning products in the mobile air conditioning what is its working principle.
Mobile air conditioning its biggest feature is the use of very flexible and convenient, can be moved at will, in different rooms can be used. Mobile air conditioning used in the condenser is a water-cooled condenser, in the air conditioning in its water tank is installed in a small water pump, the water inside the air conditioning to the condenser above the water disperser, and then through the water disperser evenly sprinkled in the condenser finned tube. The water vaporizes after absorbing heat, and the vaporized steam is discharged outside through the exhaust hose.
Central air conditioning and split air conditioning which is better
Look at the pre-preparation
One than the construction and installation
Home central air conditioning is the construction of the pre-wiring. The design must be based on the specifics of the room before construction can proceed. Moreover, the household central air conditioning system is a hidden project, to fully cooperate with the decorative design, in order to achieve good decorative effect. So the installation of home central air conditioning technology is high.
Split air conditioning is the construction of the installation later on, as long as the user to determine the installation location of the outdoor unit and indoor unit, installation by the installer to install, with refrigerant copper tubing to connect the internal and external units can be.
Two than the aesthetic effect
Central air conditioning piping and equipment are hidden in the ceiling, can be closely coordinated with the construction of the decoration, to achieve a variety of desired effects, so that different functions of the room decoration to do a variety of modeling layout, does not affect the aesthetics.
Split air-conditioning air-cooled outdoor unit must be scattered hanging on the outside wall or mounted on the outdoor ground, affecting the effect of the exterior decoration, while the indoor unit is to be hung on the inside wall or placed on the ground, and occupies the indoor space, which invariably reduces the use of the room area, but also may affect the effect of the decoration.
Three than the purchase cost
Central air conditioning is only in recent years began to gradually enter the Chinese market products, the cost is relatively high, so the cost of purchasing than the split air conditioning higher.
Split air conditioning has long been popularized in China, although the grade and the use of less than the central air conditioning, but the price is its biggest advantage.
Look at the use of the effect
A ratio of air conditioning effect
Central air-conditioning can make every room is warm in winter and cool in summer, spring and autumn ventilation year-round air conditioning effect. Air-conditioned room to stay a long time, easy to get a cold and other air-conditioning disease, and the central air conditioning can adjust the temperature of the whole room on average, to avoid the other split units caused by the direct blowing too cold and the room hot and cold uneven human discomfort phenomenon.
Split air conditioning is more limited, there will be one side of the cold and one side of the hot phenomenon. And it is difficult to ensure that each room can be installed on the split air conditioner, because the split air conditioner indoor unit and the outdoor unit of the connecting pipe is generally 3m long, the longest 5m, some rooms due to the limitations of the indoor and outdoor installation of the machine is difficult to ensure that the distance is less than 5m, such as greater than 5m split air conditioner is not very good.
Two than the air quality
Central air conditioning can be reasonably supplemented with fresh air, with the kitchen, bathroom exhaust, to ensure that the indoor air is fresh and hygienic, but also four seasons of the air, to meet the human body's hygiene requirements.
Split air conditioning can not send in fresh air, so it is difficult to ensure the freshness of air conditioning room air, if you open the windows and doors to ventilate the air, the cold or heat will be a large number of losses, which not only affects the temperature of the room, but also a waste of energy.
Three than power consumption
Many people will question the cost of using central air conditioning, worried that its power consumption will be much higher than the split air conditioning. This we give an intuitive example to say, the same room type, the same area of the house, in the case of all the rooms of the air conditioning is turned on at the same time, the central air conditioning power consumption will be much less than the split air conditioning, and the larger the area, the more rooms, and the more power will be more energy-saving.
And split air conditioners are relatively energy efficient when used individually. So whether electricity is saved or consumed depends on your family and specific room type for the demand for air conditioning and the pursuit of the use of the effect.
Look at the later maintenance
A ratio of routine maintenance
Central air conditioning, whether it is the air conditioning unit and return duct system, or room fan coil and fresh air system, are not easy to break down, while the refrigeration equipment is located in the refrigeration station, easy to maintain.
Split air conditioning split air conditioners are scattered everywhere, the refrigeration compressor is not only a large number and most of them hanging on the outside wall, out of order is difficult to go one by one to repair good.
Two than the service life
Central air conditioning service life is 20-30 years.
Split air conditioning service life of 8-10 years.
How does an air conditioner work?
After the air conditioner is energized, the low-pressure vapors of the refrigerant in the refrigeration system are sucked in by the compressor and compressed into high-pressure vapors and discharged to the condenser. At the same time, the outdoor air drawn in by the axial fan flows through the condenser, taking away the heat released by the refrigerant, so that the high-pressure refrigerant vapor condenses into a high-pressure liquid.
The high-pressure liquid is sprayed into the evaporator after passing through the filter and throttling mechanism, and evaporates under the corresponding low pressure to absorb the surrounding heat. At the same time, the cross-flow fan enables the air to continuously enter the evaporator ribs for heat exchange, and the exothermic cold air sent to the room. So the indoor air continuously circulates to achieve the purpose of lowering the temperature.
Refrigeration
Liquid vaporization refrigeration is the use of liquid vaporization of heat absorption, exothermic effect of condensation to achieve refrigeration. Liquid vaporization to form steam. When the liquid in a closed container, the container in addition to the liquid and the liquid itself produced by the steam, there is no other gas, the liquid and steam will reach equilibrium at a certain pressure, the gas is called saturated steam, the pressure is called saturation pressure, the temperature is called saturation temperature.
Equilibrium when the liquid is no longer vaporized, then if a portion of the steam from the container, the liquid must continue to vaporize a portion of the steam to maintain this balance. Liquid vaporization to absorb heat, this heat is called latent heat of vaporization.
Reference: Baidu Encyclopedia - Air Conditioning
What is the working principle of air conditioning
Nowadays, many people have air conditioning in their homes, and air conditioning can be said to be one of the common appliances in summer. Although many people use air conditioners in their homes, most of them do not know what the working principle of air conditioners is. Do you know what principle the air conditioner operates on? Air conditioners can generally be divided into cooling and heating two kinds, today we will learn about the working principle of air conditioning, see we usually use the air conditioning are based on what principle of operation. Want to understand the working principle of air conditioning friends can read.
Working principle:
1, air conditioning is divided into single-cooled air conditioning and cooling and heating air conditioning, the principle of work is the same, air conditioning before most of the general use of refrigerant is Freon. Freon's characteristics are: from the gas state to the liquid state, the release of a large amount of heat. When it changes from liquid to gas, it absorbs a lot of heat. Air conditioners are designed according to this principle.
2, the compressor will be gaseous refrigerant compressed into a high temperature and pressure of the gaseous refrigerant, and then sent to the condenser after the heat dissipation to become room temperature and high pressure of the liquid refrigerant, so the outdoor unit is blowing out hot air. Then to the capillary tube, into the evaporator, due to the refrigerant from the capillary tube to reach the evaporator after the sudden increase in space, the pressure decreases, the liquid refrigerant will be vaporized into a gaseous low-temperature refrigerant, thus absorbing a large amount of heat, the evaporator will become cold, the indoor unit's fan will be blown from the indoor air from the evaporator, so indoor units blowing out is the cold wind; water vapor in the air meets the cold evaporator will be will condense into water droplets and flow out down the water pipe, which is the reason why the air conditioner will be out of water.
3, heating time there is a part called the four-way valve, so that the refrigerant in the condenser and evaporator flow direction and refrigeration in the opposite direction, so heating time outdoor blowing cold air, indoor machine blowing hot air. In fact, it is used in junior high school physics to learn the principle of liquefaction to expel heat and vaporization to absorb heat.
4, environmentally friendly air conditioning principle: the circulating water pump uninterruptedly to the water tank of water pumping, and through the water system evenly sprayed in the evaporation filtration layer, the hot air into the evaporation of outdoor cooling media, evaporative cooling medium CELdek within the water and water to fully carry out the exchange of heat due to the cooling water evaporation and heat absorption and cooling of the cool, clean air from the low-noise fan pressurized indoor, so that the indoor hot air discharged to the outside, so that the hot air indoors. The hot air in the room is discharged to the outdoor, so as to achieve the purpose of indoor cooling.
The above is an introduction to the working principle of air conditioning. The working principle of air conditioning is very simple. Air conditioners generally use an external compressor and an internal compressor to produce the cooling effect. Air conditioners generally have Freon, which is a refrigerant that is compressed through the external air conditioner for cooling. When we choose the air conditioner can choose some inverter air conditioning, inverter air conditioning works pretty much the same, but inverter air conditioning with an inverter compressor will be more energy efficient, is a better type of air conditioning.
The working principle of air conditioning
The working principle of air conditioning is as follows: after the air conditioner is energized, the low-pressure vapour of the refrigerant in the refrigeration system is sucked in by the compressor and compressed into high-pressure vapour and discharged to the condenser. At the same time, the outdoor air inhaled by the axial fan flows through the condenser, taking away the heat released by the refrigerant, so that the high-pressure refrigerant vapor condenses into a high-pressure liquid.
The high-pressure liquid is sprayed into the evaporator after passing through the filter and throttling mechanism, and evaporates under the corresponding low pressure to absorb the surrounding heat. At the same time, the cross-flow fan enables the air to continuously enter the evaporator ribs for heat exchange, and the exothermic cold air sent to the room. So the indoor air circulation flow, to achieve the purpose of lowering the temperature.
The use of air conditioners
1, cooling
In the design and manufacture of air conditioners, the temperature is generally allowed to be controlled between 16 ~ 32 ℃. If the temperature is set too low, on the one hand, increase unnecessary power consumption, on the other hand, cause the temperature difference between indoor and outdoor is large, people in and out of the room can not quickly adapt to the temperature change, easy to catch a cold.
2, dehumidification
Air conditioner in the refrigeration process is accompanied by dehumidification. People feel comfortable in the environment relative humidity should be about 40 ~ 60%, when the relative humidity is too large, such as in more than 90%, even if the temperature in the comfortable range, people still feel bad.
3, warming
Heat pump type and electric air conditioner have warming function. Warming capacity with the decline in outdoor ambient temperature gradually become smaller, if the temperature at -5 ℃ can hardly meet the heating requirements.
4, purify the air
The air contains a certain amount of harmful gases such as NH3, SO2, etc., as well as a variety of sweat, body odor and bathroom odor and other odors. Air conditioner purification methods are: fresh air, filtration, the use of activated carbon or photocatalyst adsorption and absorption, etc. A, fresh air: the use of the fan system will be indoor humid air to the outdoor exhaust, so that indoor formation of a certain degree of negative pressure, the fresh air from the door around the gap, the window into the room, to improve the quality of indoor air. B, photocatalyst: in the light of the irradiation can be regenerated, the adsorbed ammonia, nicotine, acetic acid, hydrogen sulfide, etc., can be re-used. Harmful substances are released and can be reused.
5, increase the concentration of negative ions in the air
The size of the concentration of charged particles in the air will affect human comfort. Air conditioning on the installation of negative ion generators can increase the degree of negative air ions, making the environment more comfortable, while reducing blood pressure, asthma inhibition and other aspects of a certain medical effect.
What is the working principle of air conditioning?
Working principle: air conditioning is divided into single-cooled air conditioning and cooling and heating air conditioning, the working principle is the same, air conditioning before most of the general use of refrigerant is Freon.
The characteristic of Freon is that it releases a lot of heat when it changes from gas to liquid. And when it changes from liquid to gas, it absorbs a lot of heat. Air conditioners are designed according to this principle.
The compressor compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant, and then sends it to the condenser to dissipate the heat into a room-temperature, high-pressure liquid refrigerant, so the outdoor unit blows out hot air.
Then to the capillary tube, into the evaporator, due to the refrigerant from the capillary tube to reach the evaporator after the space suddenly increased, the pressure decreases, the liquid refrigerant will be vaporized, into a gaseous low-temperature refrigerant, which absorbs a large amount of heat, the evaporator will become cold.
There is a part called four-way valve when heating, which makes the flow direction of refrigerant in the condenser and evaporator opposite to that of cooling, so the outdoor blowing is cold air when heating, and the indoor unit blows hot air.
In fact, it is using the principle of liquefaction to expel heat and vaporization to absorb heat learned in junior high school physics.
Expanded information:
Refrigeration specific principles:
1, the principle of refrigeration
Refrigeration medium will be in the low-temperature, low-pressure Evaporation at low temperature, low pressure, producing cold effect; and at room temperature, high pressure condensation, to the surrounding environment or cooling medium to release heat. Vapor becomes a high-pressure liquid after condensing at room temperature and high pressure.
It is also necessary to reduce its pressure to the evaporating pressure before entering the container. Liquid vaporization refrigeration cycle is composed of four processes: vaporization of the work material, steam pressure, high-pressure vapor condensation, high-pressure liquid pressure reduction.
2, the principle of heating
Compressor inhalation of low-pressure gas through the compressor compression into high-temperature and high-pressure gas, high-temperature gas through the heat exchanger to raise the temperature of the water, while the high-temperature gas will be condensed into liquid.
Liquid into the evaporator for evaporation, the liquid through the evaporator into a low-pressure low-temperature gas, low-temperature gas is again inhaled by the compressor for compression.
This cycle continues, the air conditioning side of the circulating water into 45-55 degrees of hot water. The hot water is piped to the room to be heated, and the room is installed with a fan coil to exchange the hot water and air to realize the purpose of heating.
Baidu Encyclopedia - Air Conditioning
Baidu Encyclopedia - Air Conditioning Refrigeration Principle