What's the difference between r22 and Freon? Refrigerant R22 is a kind of freon. Besides R22, there are R32, R4 10a for air-conditioning freon.
What is the difference between the heating principle of air conditioning and refrigeration? I guess you mean home air conditioning.
Refrigeration principle: the compressor works to make the evaporator (indoor unit) in an ultra-low pressure state, and the liquid refrigerant in the evaporator quickly evaporates and absorbs heat. The wind from the fan is cooled by the evaporator coil and turned into cold air to blow indoors. After being pressurized by the compressor, the evaporated refrigerant condenses into a liquid state in the high-pressure environment in the condenser (outdoor unit), giving off heat, which is emitted to the atmosphere by the outdoor unit fan, thus achieving the refrigeration effect.
Heating principle: First, it is opposite to the refrigeration process. Imagine changing the indoor unit and outdoor unit in summer, and hot air will be blown indoors. Of course, in areas with low outdoor temperature in winter, this heating method is very inefficient. The second type is electric heating tube heating, which directly converts electric energy into heat energy with high efficiency, and is generally used in cabinet high-power single air conditioners.
There are many forms of cold and heat sources of central air conditioning, such as electric refrigeration (the principle is the same as that of household air conditioning)+boiler, lithium bromide absorption direct-fired machine, ground temperature (heat) central air conditioning, cold storage and ice storage central air conditioning and so on.
In fact, in addition to direct heating through combustion or electric energy, other refrigeration and heating principles are generally heat transmission.
Are there any differences between various brands of air conditioners, refrigerators and hair dryers? The modes of refrigeration and air blowing are similar, but the difference is that refrigeration is strong and weak, and air blowing is big and small, that's all.
What's the difference between fish pond refrigerator and cold storage refrigerator? They have different working conditions, different low temperature values and different control system settings.
The temperature that the refrigerator in cold storage can reach is much lower than that in fish pond refrigerator. Generally, the temperature control of fish pond refrigerator is more accurate than that of cold storage refrigerator, and it can keep the temperature constant.
Air conditioning refrigerant The old air conditioner used Buddha 22 refrigerant. What's the difference between a new air conditioner and Freon 33? R22 is stable and non-corrosive to metals. However, when R22 contains water, copper plating easily occurs. R22 is corrosive to natural rubber and plastic organic materials, and chloroethanol rubber can be used as sealing material.
As the most widely used medium-low temperature refrigerant, R-22 is mainly used in household air conditioners, commercial air conditioners, central air conditioners, mobile air conditioners, heat pump water heaters, dehumidifiers, freeze dryers, cold storage, food refrigeration equipment, marine refrigeration equipment, industrial refrigeration, commercial refrigeration, refrigeration condensing units, supermarket display cabinets and other refrigeration equipment. Chlorodifluoromethane can also be used as raw material for producing PTFE resin, intermediate of fire extinguishing agent 1 12 1, and physical foaming agent of polymer (plastic).
Used in reciprocating compressors as refrigerants for industrial, commercial and household air conditioning systems; It can also be used as aerosol spray of pesticides and paints, and can also be used to produce fire extinguishing agent1211; It is the basic raw material for producing various fluorine-containing polymer compounds.
R22 belongs to HCFC refrigerant and will be completely phased out in 2030 according to Montreal Protocol.
Main environmental protection substitutes: R404A, R4 10A, R290, R23, R407C, R41a, R4 17A, R 1270.
Excuse me, what kinds of refrigerants are there in the refrigerator air conditioner? What is the difference? Refrigerator refrigerants are divided into fluorine-containing refrigerants and fluorine-free environmental protection refrigerants. Traditional fluorine-containing refrigerants include CFC- 12. CFC-22, and environmental protection refrigerants include R- 134a R- 152. Among them, R- 134a is commonly used because it is relatively stable and can be irrigated repeatedly. Now many cars also use it for cooling.
What's the difference between refrigeration and air conditioning?
After the air conditioner is electrified, the low-pressure steam of refrigerant in the refrigeration system is sucked by the compressor, compressed into high-pressure steam, and then discharged into the condenser. At the same time, the outdoor air sucked by the axial fan flows through the condenser, taking away the heat released by the refrigerant and condensing the high-pressure refrigerant vapor into high-pressure liquid. The high-pressure liquid is injected 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 makes air continuously enter the fins of the evaporator for heat exchange, and sends the cooled air after heat release to the room. In this way, the indoor air continuously circulates and flows to achieve the purpose of cooling down.
Breathe:
The air conditioner with the function of fresh air ventilation adds plastic ventilation pipes on the indoor unit and outdoor unit, and there are fans inside, which can discharge the outdoor fresh air indoors and keep the indoor air fresh.
Replenish indoor oxygen. Due to the continuous consumption of oxygen by human body, the indoor oxygen content is reduced, and the oxygen content in indoor air is increased by supplementing outdoor air with high oxygen content.
Exhaust indoor dirty air. Long-term use of air conditioners can easily produce various indoor odors, such as sweat, body odor and smoke. Ventilation and air conditioning can constantly update indoor air, expel indoor odor in time, improve air quality and be beneficial to human health.
Moisturize. Because when the air conditioner is cooling, the evaporator is constantly condensing water and discharging it outside, resulting in the loss of water in the indoor air. Ventilation and air conditioning can achieve moisture retention by supplementing outdoor air with high moisture content.
Why can the refrigerator refrigerate? What's the difference between a cold storage and a refrigerator? The refrigerator is designed and manufactured by using the principle of heat absorption when Freon liquefied gas evaporates into gas.
Take a two-door refrigerator as an example: a compressor is installed at the bottom of the refrigerator, and its task is to increase the pressure of gaseous freon entering the compressor. The pressurized gaseous freon has a high temperature, so it enters the condenser to cool down and becomes liquid freon. Liquid Freon is dried, filtered and spiral capillary to remove dirt and moisture mixed in liquid Freon and reduce pressure. Finally, it enters the evaporator of the upper freezer of the refrigerator and quickly evaporates into gaseous freon, which absorbs a lot of heat of food stored in the freezer of the refrigerator. After this process, the freon turned into gas is sucked by the compressor again and enters the next refrigeration cycle. After one cycle after another, the temperature in the refrigerator drops rapidly until it reaches the specified freezing temperature, and the compressor automatically stops running and waits for restarting.
Difference:
1, cold storage is mainly used for food, dairy products, meat, aquatic products, etc. Cold storage is actually a kind of low-temperature cold storage (cold storage), and it also belongs to a kind of refrigeration equipment. Compared with the refrigerator, its refrigeration area is much larger, but their refrigeration principle is the same.
2. The refrigerator is a kind of refrigeration equipment that keeps a constant low temperature, and it is also a civilian product that keeps food or other items at a constant low temperature. There are compressors, ice makers, cabinets or boxes for refrigeration, and there are storage boxes with refrigeration devices in the boxes. The volume of domestic refrigerators is usually 20 ~ 500 liters.
Refrigerator refrigeration is the inverse Carnot principle. You can search for details. The principle of refrigerator refrigeration is the same, but the size is different.