Choosing a fridge: what to look for?
Refrigerators have long become indispensable in everyday life appliances. They help keep foods fresh and usable. But it happens that the time comes to update such a valuable technique.
What should be oriented in modern equipment and how to choose a refrigerator that fully meets your needs and wishes? This will help tips from professionals from the world of technological progress.
Refrigerator: briefly about the main thing
A refrigerator is equipment designed to maintain low temperature in a special chamber that has thermal insulation from the outside world. Standardly, these devices are used in everyday life and for commercial purposes in order to shed the term "life and freshness" of food products. Refrigerators are also applicable for the storage of medicines and other products that require specific temperature indicators.
This equipment works on the principle of heat removal, with its subsequent dispersion into the environment.This avoids the temperature rise in the insulated chamber.
The classification of refrigerators is not too complicated.
So, depending on the scope of use, there are 2 large groups of devices:
- Industrial. The devices are characterized by high power and a solid volume of the refrigerating chamber. They are used in warehouses, meat processing plants and other factories, as well as in stores.
- Household. These are standard devices, characterized by compactness and efficiency. It is the advice about their selection that Internet users regularly search for.
All refrigerators are also divided into 2 groups, depending on the temperature conditions in the chamber:
- medium temperature - standard devices without freezing products;
- low-temperature or freezers (with a constant temperature of about −18 ° C).
However, the leading manufacturers and brands of the world provide users with the opportunity to use 2-in-1 equipment - two-chamber units, which have both a standard block of freshness and easy cooling, and a full-fledged freezer.
There is also a technical classification of refrigeration equipment based on the principle of its operation.
Experts identify 4 types of refrigerators:
As the name implies, the principle of compression is used to cool the air in the chamber. There is an evaporator in the equipment that converts the refrigerant (cooling element) to the vapor state. Then, using a compressor, these evaporations are compressed, which leads to an increase in their temperature, and are redirected to the condenser. Here is the expulsion of the accumulated heat into the external environment, the conversion of the refrigerant back into liquid and its entry into the capillary. Then, this substance produces cooling, and the cycle repeats again. Such models of refrigerators are effective and durable, as confirmed by numerous reviews.
The process of cooling the chamber is carried out by evaporation of the refrigerant. However, the circulation of this substance is carried out by dissolving it or absorption in water. So, up to 1000 units of refrigerant (1), ammonia is used more often per unit volume of liquid.
The basis of operation is the Peltier effect. In fact, the transfer of thermal energy through one of the different types of conductors takes place, with 1 element being cooled and the second to be heated.The process of temperature increase is carried out due to the first heat release and due to heating from the current. This principle is rarely used in modern stationary devices, but it is in demand in the production of civilization benefits such as a cooler bag, a cooler for liquids, and compact auto-refrigerators.
Having a vortex coolers.
According to experts, this method is the safest, since it does not involve chemicals and electricity. After all, the process of lowering the temperature is carried out by expanding the air compressed by the compressor. This phenomenon is carried out in special blocks of specific coolers of the vortex type. However, they are not produced at all due to the increased noise level, high consumption and low efficiency.
Leading brands produce only the first 2 types of equipment, since the third and fourth are complex and extremely expensive to perform, respectively, such products will be a complete failure in the consumer market.
As you can see, the variety of refrigerators is impressive. Knowing about the principle of operation and types of devices, it will be much easier for you to make the right choice, having stopped on the most acceptable and safe type of unit.
Criteria for selecting a refrigerator
Having come to the store, many consumers are faced with a huge selection of devices, but which refrigerator is better to choose? After all, not only cost and design is important, but the presence of certain functions and comfort during the use of equipment.
Experienced home appliance specialists are happy to advise on selection criteria.
Therefore it is worth focusing on such factors:
- device size in a slice of different parameters;
- volume of the refrigerator;
- type of defrosting;
- energy class;
- climate class;
- device control features;
- availability of additional functions;
- manufacturer (brand name and model).
Each significant selection criterion may include various parameters and features, so they require more detailed attention.
Planning a purchase is worth starting at home. And no impulse acquisitions. This is due to the fact that there is a high risk that the equipment simply does not fit anywhere and will have to put it right in the middle of the kitchen or on the aisle. Therefore, before going to the store, make a choice of space under the fridge and take measurements.
Now is the time to think about opening the door of the refrigerator. It is important that there are no objects sticking out or too close together. To assess the comfort after installing the refrigerator, add another 1 device width to the intended opening of the door using a tape measure. Nothing interferes? So, the installation can be done.
This term refers to the useful space of the unit, minus shelves and containers. Also, the volume is often divided into several plane-chambers.
Experts identify the following types of refrigerators:
These are relatively small refrigerators in which the freezer compartment is located directly in the chamber for cooling food. Usually this department is located in the upper part of the refrigerator. Such units have small dimensions and are perfect for people for whom every free centimeter matters.But it is worth remembering that storing large amounts of food in them is impossible.
These are the most popular devices, as the combination of usable space and cost is the most optimal. In addition, they offer almost all well-known brands and manufacturers. Each chamber has a separate door, so the freezer compartment is completely isolated from the refrigerated one. The location of the bottom element can be from below or from above. If you are interested in freezing stocks in large sizes, it is better to choose more voluminous products with a lower location of the freezer.
A chamber with zero temperature is added to the two main compartments - a freshness section. In the third chamber, the temperature is maintained at 0 - +2 degrees, which is optimal for short-term storage of the perishable port without freezing.
These are bilateral products, in which the freezer is hidden from the side. They have a large size and advanced functionality. Such units are the perfect solution for a large family or running a restaurant business. They have a stylish design and, as the reviews, a lot of additional features.
When choosing a device, be guided by your own needs. So, if you often freeze fruits and berries for the winter, then a large freezer is important. If you have a family, then you should focus on the daily number of pots with leftover food and whether they fit in the fridge?
The optimal solution is a two-chamber model, but for large volumes it is worth choosing bilateral analogues.
Features defrost refrigerators
Given the need for constant operation of the freezer, in many devices there is the likelihood of frost or snow. This is a real problem that many manufacturers are struggling in their own way.
There are these types of defrost for the freezer:
As the reviews say - this is a real excursion into the past. In this case, the refrigerator is de-energized, the ice is melting and the liquid is removed from it in due time. Then the unit should be thoroughly washed and restarted after drying. As you can see, the process is time consuming and complex.
This is a more complex device, different without a hlopotnoy operation.The freezer compartment is cooled by circulating cold air, droplets of which are deposited in the evaporator behind the rear wall of the chamber. Accordingly, there is frost, but it is not visible to us. After a certain period of time the fan turns off and the evaporator turns on, and therefore freezes itself.
Only automatic solutions are relevant for the refrigerator compartment - drip defrosting or the NoFrost system. The first type is the easiest to use. During operation of the compressor and cooling of the unit, there is a slight formation of ice on its rear wall. To eliminate it, the compressor periodically stops, after which the frost melts and flows into a special drain. Then the system starts up again.
When choosing a refrigerator, it is important to consider the consumption of electricity. After all, these units consume just a huge amount of energy, so you should think about their energy efficiency.
There are 7 classes of such devices:
- A (up to 55% of the nominal 100%);
- B (up to 75%);
- C (within 75 - 90%);
- D (90-100%);
- E (in the range of 100 - 110%);
- F (overrun of 110-125%);
- G (more than 125%).
Also relatively recently, the classes A + and A ++, with the most economical current consumption, have appeared. You can find the energy efficiency indicator on a special sticker from the manufacturer located on the device itself.
Refrigerator climate system class
Modern refrigerators are designed to function at certain temperature indicators. Therefore, if the summer is too hot, then there is a risk of overheating.
There are such classes:
- normal (N) - operating ambient temperature within 16 - 32 degrees with a value of "+";
- subnormal (SN) - working range in the range of 10 - 32 ° C;
- subtropical (ST) - functions properly at 18 - 38 ° C;
- tropical (T) - maintains values between 18 - 43 ° C.
As you can see, the choice of a refrigerator should be made taking into account temperature indicators, which is especially important for the southern regions. However, given the seasonality, many manufacturers produce multi-class devices, which expands the range of temperature differences.
Unit control and additional functions
Before you choose a refrigerator for your home, you should clearly define your needs and expectations.
So, standard home appliances can be supplemented with such functionality:
- bar - glass door to extract chilled beverages from the unit;
- reservoir for liquid, whether the water supply is connected - the device works as an automatic device with pouring water (juice, etc.) into a glass or cup;
- generator to create ice (crushed or diced);
- the possibility of hanging the doors and wheels - for easy transportation and installation.
Of course, units with these options have a higher cost, but the comfort is also significantly increased. However, it should be understood that if your goal is to save money as much as possible, then it will be more reasonable to refuse such options.
There are also 2 types of temperature control in the refrigerator:
Here you can only choose 1 of 5 modes without a clear indication of the temperature.
The main advantage of this mode is the ability to set temperature readings with an accuracy of a degree.
The cost of the device with mechanical control is lower. At the same time, the efficiency and quality of cooling are undoubtedly more comfortable with electronic adjustment, which is confirmed by many reviews from the network.
Brand and Cost
Experts recommend choosing only proven firms. Among them are the following brands: Candy, Atlas, Samsung, Electrolux, etc. Eminent brands managed to establish themselves with the best hand, offering customers only high-end technology.
The last factor that is worth paying attention to is the price of equipment. Usually it can change depending on the availability of additional features, design or quality indicators. Therefore, first of all, you should focus on your own needs, and then on the difference in cost.