Refrigerator freezing capacity standard
Refrigerator freezing capacity standard, refrigerator, I believe that every family has, the role of the refrigerator is in order to make our food to play a role in preservation, so that they can be preserved longer. So, today I'll take you to see how much the refrigerator freezing capacity standard is.
Refrigerator freezing capacity standard 1How to see the freezing capacity and power of the refrigerator?
Freezing capacity is also an important refrigerator parameter, freezing capacity is how many kilograms of food the refrigerator can freeze from 25 degrees Celsius to -18 degrees Celsius in 24 hours.
Larger refrigerator capacity, freezing capacity is generally more than 12 kilograms to be more appropriate, because the stronger freezing capacity can make the refrigerator temperature drop faster, thus reducing the operation of the compressor, in addition to the stronger freezing capacity can also make the food quickly frozen, and therefore more able to maintain freshness.
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The refrigerator is a refrigeration equipment to maintain a constant low temperature, but also a kind of food or other items to maintain a constant low-temperature cold state of civilian products. Inside the box there is a compressor, ice machine to ice the cabinet or box, with refrigeration device storage box.
The volume of the domestic refrigerator is usually 20 to 500 liters. 1910 the world's first compression type refrigeration domestic refrigerator in the United States. 1925 Swedish Lido company developed a domestic absorption refrigerator. 1927 General Electric Company developed a fully enclosed refrigerator. 1930 the use of different heating methods of air-cooled continuous diffusion absorption refrigerator on the market. In 1931, the development of a new refrigerant Freon 12. the second half of the 50's began to produce domestic thermal refrigerators, China from the 50's began to produce refrigerators.
What is the meaning of freezing capacity
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Is the freezing capacity of the refrigerator the bigger the better
When shopping for a refrigerator, we are often faced with a comparison of some parameters, such as capacity, power consumption, freezing capacity and so on. A few days ago, a netizen asked in the forum, "Buy a refrigerator is not the stronger the freezing capacity, the better?" In fact, not so.
We know that the freezing capacity, also known as the cooling capacity and refrigeration capacity, indicates the cold effect that the freezer can produce. That is, under certain conditions in the freezer in the refrigerant from the frozen object to take out the heat of the ability, generally to draw heat per hour (Joule) to express.
Although it is true that the freezing capacity is an important technical indicator of the measurement of refrigeration appliances, but the most important technical performance of household refrigerators is not refrigeration but freshness. Excessive freezing power not only to unnecessarily increase the user's expenditure, increase the power consumption of the refrigerator, but also destroy the internal organization of the food, affecting the nutrition.
Therefore, in the selection of
refrigerator actually value that parameter, or need to be based on their own actual needs to start, if it is only the preservation of food, then the pursuit of excessive freezing capacity is not much significance.
What is the freezing capacity of the refrigerator
Hello!
The freezing capacity of a refrigerator is mainly the ability of the refrigerator to freeze food in 24 hours! It's usually labeled on the nameplate on the back of the refrigerator!
Refrigerator freezer star symbol symbol Star Symbol Freezer Temperature (℃) Approximate food preservation time
One-star * ≤ -6 1 week
Two-star ** ≤ -12 1 month
Three-star *** ≤ -18 3 months
Four-star **** ＜ -18 3-6 months
Note: The temperature of a four-star refrigerator is the same as the temperature of the refrigerator's freezing capacity in 24 hours: The temperature of a four-star refrigerator is the same as that of a three-star refrigerator, and the fourth star is the freezing star, which indicates that the refrigerator has quick-freezing capability.
How much freezing capacity of the refrigerator is appropriate
The quality of the refrigerator product and freezing capacity is not related to the freezing capacity of the refrigerator is a design parameter, specifically, the refrigerator freezer in a 24-hour period of time can be the refrigerator freezer how many kilograms of beef (the laboratory used M packages as a simulation of the beef for the test) from room temperature down to -18 degrees. What is actually expressed is the freezing capacity of the refrigerator freezer, and has nothing to do with the quality of the product.
Refrigerator freezing capacity standard 2Freezer temperature at -18 ~ -24 degrees is appropriate.
The freezer is between -2 to -8 degrees, and the freezer temperature is around -18 to -24 degrees, and the best temperature for the refrigerator freezer is 0 to 4 degrees Celsius. If the temperature is higher than 5 degrees Celsius, it is easy to breed Listeria monocytogenes, which is harmful to food; below 0 degrees Celsius, the water in the food will freeze.
High room temperature in summer may affect the temperature inside the refrigerator, try to open the refrigerator door as little as possible, you can also consider the temperature down 1 degree Celsius, but do not adjust too much, and do not go beyond the range of 0-4 degrees Celsius.
Expanded information:
The correct use of the refrigerator: 1, leftovers. Before putting into the refrigerator, it is best to cool to room temperature within two hours to reduce bacterial growth, and then sealed into, help to preserve freshness. 2. Thoroughly clean your refrigerator once a month with soapy water and a toothbrush. Give your refrigerator a little vacation each year by emptying, disconnecting, and defrosting. 3, the location of the freezer food placement: the bottom drawer is suitable for fruits and vegetables, which helps to maintain moisture; the bottom shelf temperature is the lowest, you can put raw meat, poultry and dairy products; the middle layer can be placed in the eggs and cooked food; the top layer is suitable for wine and leftovers. The top shelf of the refrigerator door is for butter and cheese; the bottom shelf of the door is for juice and condiments. Refrigerator's. Freezing capacity Freezing capacity: is the ability to freeze as many kilograms of stored food from 25°C or 32°C to -18°C Celsius in 24 hours. At the same time, the new national standard has been revised in the new freezing capacity: the refrigerator freezer can be 7, 5 kg of beef from room temperature cooling down to -18 ° C in 12 hours. Currently, two freezing capacity parameters in the market **** exist and gradually switch in. Freezing star rating: The star rating of a refrigerator directly reflects the temperature that can be reached in the refrigerator freezer, which is an important indicator of refrigerator refrigeration performance, the higher the number of stars the stronger the refrigerator's refrigeration performance, and the longer the corresponding food is effectively preserved in the freezer. The specific standards are as follows: - One-star: storage temperature is less than or equal to -6 ℃, the storage time is not more than a week - Two-star: storage temperature is less than or equal to -12 ℃, the storage time is not more than one month - Three-star: storage temperature is less than or equal to -18 ℃, the storage time is not more than three - four-star: storage temperature less than -18 ℃ and with quick-freezing function, storage time of 3-6 months The refrigerator's strong freezing capacity can make the refrigerator temperature drop faster, so that the food is quickly frozen. Because the faster the food is frozen, the faster the food passes through the ice crystal generation belt, which can reduce cell membrane damage, so that the food better maintain the flavor and texture. How do you understand the technical parameters of a refrigerator? Fixed Frequency Air Conditioner and Inverter Air Conditioner Fixed Frequency and Inverter refer to two different ways of working of the compressor in the refrigerator. A fixed-frequency refrigerator stops running temporarily when the internal temperature drops to a certain preset temperature value, until the internal temperature rises and then starts running again. In this case, the temperature inside the refrigerator will fluctuate more. The compressor of an inverter refrigerator will always adjust the frequency according to the actual situation and keep the temperature inside the refrigerator constant. Therefore, the temperature inside the refrigerator will not fluctuate greatly. Cooling method: direct cooling or air-cooled The biggest difference between air-cooled and direct cooling is that air-cooled refrigerators do not frost. Direct-cooled refrigerators are set up with a condenser and evaporator inside, using the natural convection of air to cool the food, which can keep the food moisture well, but it is easy to frost. The air-cooled refrigerator uses a cooler to cool the air inside the box, and then sends it back to the inside of the box, circulating back and forth so as to achieve the cooling effect, the cooling speed is fast, the temperature is well balanced, and there is no frost. Air-cooled refrigerators are more often used in large-volume, multi-zone new refrigerators because of the advantages of fast refrigeration and intelligent defrosting, while direct-cooling technology is more often used in small- and medium-volume refrigerators, which are also cheaper. Cooling method: direct cooling or air-cooled Energy efficiency level: energy efficiency level is a grading method that indicates the difference between the energy efficiency of household electrical appliances, according to the national standards and relevant regulations, the current energy labeling of China's energy efficiency is divided into five levels; Level 1: indicates that the product has reached the international advanced level of energy efficiency, the lowest energy consumption; Level 1: indicates that the product has reached the international advanced level of power saving Level 1: indicates that the product power saving has reached the international advanced level, the lowest energy consumption; Level 2: indicates that the product is more power-saving; Level 3: indicates that the product energy efficiency for the average market level; Level 4: indicates that the product energy efficiency is lower than the average market level; Level 5: is the market access indicator of the product, lower than the requirements of the level of the product is not allowed to produce and sell. Noise The noise of the refrigerator is generated by the start of the compressor, and is generally lower than 45-48 decibels is the normal value. And the general noise between 38-40 dB even if the silent refrigerator, 24 hours open will not disturb the family rest. Summary 1, when purchasing a refrigerator, according to the population base of the family, the placement of space to determine the size of the refrigerator, living habits to determine the type of refrigerator. 2, different families have different requirements for refrigeration and freezing, and it is recommended to buy a refrigerator with a door or a variable temperature zone. 3, mixed cooling is both direct cooling and air cooling. The freezer is direct cooling, effectively maintaining food moisture, preventing air drying. The freezer is air-cooled to reduce frosting. Therefore, when buying a refrigerator, it is recommended to prioritize mixed cooling. 4, from the point of view of enough ice, enough stability, enough power saving, inverter air conditioning is more cost-effective. Fixed frequency refrigerators are relatively less noisy and less expensive. It is an affordable choice for price-sensitive people.