Which refrigerant is more economical and secure?

The winter temperature in Shenyang can generally be designed according to -30 antifreeze.

Therefore, we can choose our company's special refrigerant. It can ensure frost protection in winter, and can also have the ability to resist corrosion at high temperature.

Refrigerants and refrigerants have different properties, different principles, different requirements, different applications, and different characteristics. The differences are as follows:

1. The nature is different.

Refrigerant, also known as refrigerant, refrigerant, refrigerant, is a medium substance used to complete energy conversion in various heat engines. The refrigerant, which bridges in the indirectly cooled refrigeration unit, completes the intermediate cooling medium that transfers the heat from the cooling system to the refrigerant. The intermediate cooling medium is also known as the secondary refrigerant (as shown in the figure below).

2. The principle is different.

The cycle of refrigerant is to be cooled by the refrigerant in the evaporator and sent to the cooling equipment to absorb the heat of the cooled system, and then return to the evaporator to transfer the absorbed heat to the refrigerant, and the refrigerant is re-cooled by the refrigerant.

The refrigerant draws the heat of the object being cooled at a low temperature and then transfers it to the cooling water or air at a higher temperature. In vapor compression refrigerators, a working fluid that can be liquefied at room or lower temperatures is used as a refrigerant (as shown in the figure below).

3. The requirements are different.

Refrigerant property requirements: excellent thermodynamic properties, so that it can operate in a given temperature range with high cycle efficiency, the working fluid is required to have good chemical stability at high temperatures, and the working fluid does not decompose at higher working temperatures (as shown in the figure below).

4. Different applications.

In the application of refrigerants, there are usually conversion processes such as gas-liquid phase change, taking the refrigerant in industrial chillers as an example. When the cooling system of the industrial chiller generates cold energy, it needs to use the circulating pure water to transport the cold energy for a long distance, and then return to the evaporator to continue cooling and then circulate, so as to help the chiller realize the transfer of cold energy (as shown in the figure below).

5. Different characteristics.

For the long-term and stable operation of the refrigeration system, the refrigerant must have excellent thermodynamic properties, thermophysical properties, chemical properties, and must be safe, non-toxic, and electrically insulating. Common refrigerants have the characteristics of non-solidification, non-gasification, non-toxic, good chemical properties, non-corrosiveness, large specific heat capacity, and low cost in the service temperature range (as shown in the figure below). <

Commonly used refrigerant models are R410A, R134A, R407C, R22, ammonia, and carbon dioxide.

Common refrigerants: Commonly used refrigerants include air, water and salt water solutions, propylene glycol and ethylene glycol, dichloromethane and chlorochloroform. There are many types of refrigerants, which can be gases, liquids, or solids.

Refrigerant is a working fluid directly used for refrigeration, such as freon, ammonia, etc., while refrigerant is a working fluid that transmits cold energy, that is, the cold energy produced by the refrigerant is transmitted to a farther place for use. For example, water, air, ethylene glycol, etc

Refrigerants and refrigerants are collectively referred to as refrigerants, and the refrigerant produces cooling capacity through the phase change of the compressor; The refrigerant is the cooling capacity of the compressor machine that is transferred to all corners of the system.

Not the same, the refrigerant of the household air conditioner is the wind of the fan, and the refrigerant is R22

In a refrigeration unit where the refrigerant works by indirect cooling, the heat of the cooled object is transferred to the working fluid of the refrigerant being evaporated. Refrigerants are usually liquids and generally do not undergo phase changes during heat transfer. Commonly used refrigerants include air, water and salt water solutions, propylene glycol and ethylene glycol, dichloromethane and fluorochloroform.

There are many types of refrigerants, which can be gases, liquids, or solids.

Refrigerant, also known as refrigeration working fluid, is a working substance that is continuously circulated in the refrigeration system and changes through its own state to achieve refrigeration. Commonly used refrigerant: ammonia (code:

717), Freon 12 (code: 12), Freon 22 (code: The most obvious difference is that one is an indirect cooling method, and the other is a direct cooling method through its own state.

It makes no difference, it's the refrigerant.

Refrigerant is the working medium in the refrigerator, so it is also called refrigeration material.

The refrigerant circulates in the refrigerator, absorbs the heat of the collapsed cavity by the coolant or space in the evaporator and evaporates, and the heat is transferred to the surrounding medium in the condenser and is condensed into a liquid, and the refrigeration system realizes the purpose of refrigeration with the help of the change of the refrigerant state.

Refrigerant, also known as refrigerant, is an intermediate medium used to transfer cooling capacity in indirect cooling systems. After the refrigerant is cooled by the refrigerant in the evaporator, it is sent to the cooling equipment to absorb the heat of the cooled object or space, and then returns to the evaporator to be cooled again, so as to achieve the purpose of transferring the refrigeration capacity.

In the operation process of salt water ice production, ice storage system, centralized air conditioning, etc., which require the use of indirect cooling methods, it is necessary to use refrigerant carriers to carry shirts to transmit cooling capacity. After the refrigerant is cooled in the evaporator of the refrigeration system, it is used to cool the cooled substance and then return to the evaporator to transfer heat to the refrigerant.

The refrigerant plays the role of carrying the cold capacity, so it is also called the refrigerant.

This not only reduces the amount of refrigerant charged, reduces the possibility of leakage, but also makes it easier to solve the problem of cooling capacity control and distribution.

1. It has no destructive effect on the human ecological environment;

2. The critical temperature is high. It can be liquefied at room temperature or ordinary low temperature, and the critical temperature is higher than that of the ambient temperature, so as to reduce the throttling loss of refrigerant and improve the circular economy;

3. Within the working temperature range, there is an appropriate saturated steam pressure to avoid external air from infiltrating into the system; The condensing pressure should not be too high, otherwise it will cause the compressor to increase its power consumption, and require the system to have a high pressure-bearing capacity, which will increase the cost of equipment;

4. The refrigeration capacity per unit volume is large, which can reduce the gas delivery capacity of the compressor;

5. The viscosity and density are small, which reduces the loss of flow resistance in the system;

6. High thermal conductivity can improve the heat transfer coefficient of the heat exchanger and reduce the heat exchanger.

1. Refrigerant: It can be vaporized and condensed within the working range temperature, and directly refrigerated by evaporative heat.

2. Refrigerant: It participates in refrigeration with refrigerant, cannot vaporize and condense, and indirectly uses absorbed heat to achieve refrigeration.

3. The difference between refrigerant and refrigerant:

The refrigerant can be refrigerated separately, and the refrigerant is combined with the refrigerant.

The refrigerant is refrigerated by the evaporation of the liquid absorbed heat into a gaseous state, while the refrigerant is refrigerated by the liquid absorbing heat and the temperature rises.

The refrigerant evaporator does not enter the cold storage, which is equivalent to a condenser carrying the refrigerant, which is actually a plate heat exchanger.

Relative refrigerants are commonly used ammonia, fluorine, and carbon dioxide.

The relative refrigerant is carried with a methanol solution, an ethanol solution.

The purpose of refrigerant refrigeration is to be used in high-temperature air-conditioning workshops and packaging frozen food workshops, generally around zero degrees. Because of the cold storage packaging room, it is strictly forbidden to use ammonia and fluorine direct evaporation system, which means that it is unsafe to use ammonia fluorine refrigeration in the packaging room.

The answer is good, but some of the other party's refrigerant and refrigerant are written incorrectly.