What is the principle of air conditioning refrigeration

The principle of refrigeration is divided into two parts:

1.The binary solution is heated and boiled by a heat source in the generator, and the resulting refrigerant vapor is condensed into a refrigerant liquid in the condenser. The liquid refrigerant enters the evaporator after being throttled through the U-shaped tube, and is ejected by the evaporator at low pressure.

The liquid refrigerant evaporates and absorbs the heat of the refrigerant, creating a refrigeration effect.

2.The concentrate flowing out of the generator is cooled and depressurized by the heat exchanger and then flows into the absorber, where it mixes with the original solution of the absorber to form a medium concentration concentrate. The medium-concentrated solution is delivered and sprayed by an absorption pump, and the refrigerant vapor from the evaporator is absorbed into a dilute solution.

The dilute solution is pumped to the generator, and the refrigerant vapor generated by the heat source forms a concentrated solution again and enters the next cycle.

To sum up, any refrigeration equipment is composed of four parts (compressor, condenser, evaporator, throttling device), and the refrigerant absorbs or releases heat to achieve the effect of cooling or heating by changing the physical state in the refrigerator.

Its function is to regulate the temperature, humidity, cleanliness and wind speed of the indoor (or enclosed space or area) air to meet the requirements of human comfort or process flow.

In the design and manufacture of air conditioners, it is generally allowed to control the temperature between 16 -32. If the temperature is set too low, on the one hand, it will increase unnecessary power consumption, and on the other hand, when the temperature difference between indoor and outdoor is too large, people can not quickly adapt to temperature changes when entering and exiting the room, and they are prone to colds.

In the refrigeration process of the air conditioner, it is accompanied by dehumidification. The relative humidity in a comfortable environment should be around 40-60%. When the relative humidity is too high, such as more than 90%, even if the temperature is within the comfort range, the person still does not feel good.

Principle of air conditioning and refrigeration After the air conditioner is energized, the low-pressure steam of the refrigerant in the refrigeration system is sucked in by the compressor and compressed into high-pressure steam 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, causing the high-pressure refrigerant vapor to condense into a high-pressure liquid. The high-pressure liquid is sprayed into the evaporator after passing through the filter and throttling mechanism, and evaporates at the corresponding low pressure to absorb the surrounding heat.

At the same time, the cross-flow fan continuously enters the ribs of the evaporator for heat exchange, and sends the cooled air to the room after heat release. In this way, the indoor air is constantly circulating and flowing to achieve the purpose of reducing the temperature. Heating working principle Heat pump heating is the use of a compressed condenser in a refrigeration system to heat indoor air.

When the air conditioner is working in refrigeration, the low-pressure refrigerant liquid evaporates and absorbs heat in the evaporator, while the high-temperature and high-pressure refrigerant is heated and condensed in the condenser. Heat pump heating is to reverse the position of the suction and exhaust pipes of the refrigeration system through electromagnetic commutation. The indoor coil of the original refrigeration evaporator becomes a condenser during heating, so that the refrigeration system absorbs heat from the outside and releases heat from the interior to achieve the purpose of heating.

Evaporation heat absorption, condensation and heat release, low pressure evaporation, high pressure condensation, air conditioning compressor make the pipeline form high pressure and low pressure.

Its refrigeration principle is divided into two parts:

1. The binary solution is heated and boiled by the heat source in the generator, and the refrigerant vapor is generated and condensed into the refrigerant liquid in the condenser. The liquid refrigerant enters the evaporator after being throttled through the U-shaped tube, and is sprayed under low pressure through the evaporator, and the liquid refrigerant evaporates to absorb the heat of the refrigerant and produce a refrigeration effect.

2. The concentrated solution flowing out of the generator flows into the absorber after being cooled down and depressurized by the heat exchanger, and mixed with the original solution of the absorber to become a concentrated solution of intermediate concentration. The intermediate concentration solution is conveyed by the absorber pump and sprayed, absorbing the refrigerant vapor from the evaporator into a dilute solution. The dilute solution is pumped from the generator to the generator, where it is regenerated by the heat source to form a concentrated solution again and enter the next cycle.

In summary, any refrigeration equipment has four major components (compressor, condenser, evaporator, throttling device), and the refrigerant absorbs or releases heat to achieve the effect of cooling or heating through physical state changes in the refrigerator.

Air conditioner is an air conditioner that regulates temperature and humidity, and a hanging air conditioner is a unit used to provide a space area (generally closed) to deal with changes in air temperature. Its function is to adjust the parameters such as temperature, humidity, cleanliness and air flow rate of the air in the room (or enclosed space or area) to meet the requirements of human comfort or process.

In the design and manufacture of air conditioners, it is generally allowed to control the temperature between 16 and 32. If the temperature is set too low, on the one hand, it will increase unnecessary power consumption, and on the other hand, when the temperature difference between indoor and outdoor is too large, people can not quickly adapt to the temperature change in and out of the room, and they are prone to colds.

Air conditioners are accompanied by dehumidification during the refrigeration process. The relative humidity of the environment where people feel comfortable should be around 40-60%, and when the relative humidity is too high above 90%, even if the temperature is within the comfortable range, the person still feels bad.

Categories: Science & Engineering.

Problem description: When the air conditioner is cooling, does it emit heat or greenhouse gases such as carbon dioxide, and does it have any impact on the atmosphere? Is there any damage to the natural environment?

The following is how others say that air conditioning refrigeration.

Inverse Carnot cycle.

A low-boiling working fluid called a refrigerant circulates through the four components of refrigeration.

The four major components are compressor, condenser, throttle valve, and evaporator.

The low-pressure gaseous working fluid enters the compressor and is compressed into a high-temperature and high-pressure gas, at which point the boiling point of the working fluid increases with the pressure (just like the highest temperature property of water when boiling at sea level). The working fluid with a high boiling point enters the condenser and begins to liquefy, at which point the working fluid releases heat and becomes a liquid. The wide fracture then passes through the throttle valve before entering the evaporator, and the throttle valve reduces the pressure of the working fluid, and the working fluid with reduced pressure begins to evaporate in the evaporator, and then the working fluid absorbs heat and becomes a low-pressure gas.

Then it enters the compressor, and the refrigerant continues to circulate.

Through the gasification and liquefaction of the above refrigerant, the amount of heat dry beam is transferred from the evaporator to the condenser.

The evaporator of the household air conditioner is indoors, and the condenser is outdoors to achieve refrigeration.

The refrigerator evaporator is inside the freezer, and the condenser dissipates heat outside, which is the coil that can be seen on the outside of the old refrigerator before.

Analysis: Disdain for pasting other people's answers.

Heat is discharged, but no carbon dioxide is discharged.

Air conditioner refrigeration when there is a refrigeration efficiency is now generally in the numbers are not necessarily accurate).That is to say, consuming 1 unit of electrical energy, the evaporator surface absorbs 3 units of heat, and at the same time, the condenser side releases 1+3=4 heat, and the air conditioner is not real refrigeration, but"Energy is used to transfer heat from the cooler side to the hotter side"。

It has a certain cautious effect on the atmosphere.

According to the energy guard, for the atmosphere, it is to increase the amount of electricity consumed by all air conditioning equipment. The temperature in the atmosphere will increase a bit!

There must also be an impact on nature.

To a certain extent, it has exacerbated the urban heat island effect and global warming. At the same time, if the refrigerant leaks in the air conditioner, it will affect the environment.

The principle of air conditioning refrigeration: the liquid refrigerant is used to absorb heat during vaporization, and the absorbed heat is transferred from low temperature to high temperature, that is, the direction of transfer is from low temperature to high temperature.

In nature, the direction of heat transfer automatically occurs from a place with high temperature to a place with low temperature, and there is no need to consume other forms of energy.

For example, the natural flow of water is the conversion of gravitational potential energy into kinetic energy from high to low under the action of the earth's gravity (gravity), without the need to consume other forms of energy. Conversely, water flows from a low place to a high place, which cannot occur automatically, and must consume chemical or electrical energy.

The directionality of energy transfer or transformation determines that heat transfer occurs automatically, and can only occur from places with high temperature tremors to places with low temperatures.

If the outdoor temperature is low and the indoor temperature is high, the heat transfer can automatically occur and the indoor temperature drops, and there is no need to consume electricity, so the air conditioner will stop cooling. Only when the indoor temperature is higher than the outdoor temperature, and the heat transfer is reversed, the air conditioner starts to operate, and it consumes electrical energy to absorb the indoor heat and is in a cooling state.