Buying a new refrigerator often turns into a real quest due to the abundance of incomprehensible terms on price tags and in instructions. Among the usual abbreviations like No Frost or Low Frost, buyers increasingly come across the mysterious name “Dry Cooling” or, as it is sometimes written in searches, “dur cooling”. This term is puzzling, since the literal translation from English (“dry cooling”) sounds scary for products that must remain fresh and juicy.
In fact, behind this marketing name lies an improved air circulation system designed to solve the eternal problem of humidity in the chamber. Dry Cooling Technology aimed at creating an optimal microclimate where products do not weathered, but not covered with condensation. Understanding how this system works will help you make an informed choice and not overpay for unnecessary functions.
In this article we will look in detail at how the system works, how it differs from the classic “No Frost” and whether the game is worth the candle. You will learn about the real advantages for storing vegetables and meat, as well as possible nuances of operation that are silent in hardware stores.
What is hidden behind the term Dry Cooling
The term Dry Cooling (often transliterated by users as “dur cooling” or “dry cooling”) refers to a forced cooling system air circulation, but with special humidity control. Unlike traditional models, where the evaporator is located directly in the freezer or behind the rear wall of the refrigerator compartment, intelligent damper systemis used here. It regulates the supply of cold air, preventing direct flow onto the products.
The main idea of the technology is to separate air flows. Cold air, passing through the evaporator, is dried, but before entering the main chamber it is mixed with warm air or passed through special humidifier filters. This allows you to maintain the temperature at +2...+5°C without a critical decrease in humidity. For the user, this means that the greens will not wither in two days, and the cheese will not become crusty.
⚠️ Attention: The names of technologies may differ from one manufacturer to another. LG calls it Dry Cooling, Samsung may use the term Twin Cooling Plus, and other brands call it Multi Flow. Their essence is similar, but the implementation of the compressor and fan operation algorithms may vary.
It is important to understand that Dry Cooling is not a separate physical law, but a marketing name for a combination of engineering solutions. This includes the location of the evaporator, the design of the air ducts and the algorithms for the operation of the electronics. That is why the efficiency of the system directly depends on the build quality of a particular refrigerator model.
Principle of operation and design of the system
Structurally, refrigerators with a system Dry Cooling are more complex than conventional static models. It is based on a powerful evaporator hidden behind a plastic panel, usually at the top of the refrigerator or in a separate compartment. The fan drives air through the evaporator radiator, where it cools and releases excess moisture in the form of frost on the walls of the radiator.
The key difference lies in the next stage. The dehumidified cold air does not fly directly onto the shelves. It is directed through special channels to the upper part of the chamber, from where it evenly falls down, flowing around the products. Damper system (dumpers) reacts to the readings of temperature sensors and opens or closes the air supply depending on the chamber load and the set temperature.
- ❄️ Freshness zone: Thanks to precise adjustment, an ideal microclimate is created in certain areas for storing meat and fish without freezing.
- 💨 No drafts: Air moves in a laminar flow, which prevents moisture from being blown out of the surfaces of products.
- 🌡️ Stability: The temperature is restored faster after opening the door compared to drip systems.
Periodically the system switches to automatic defrostingmode. At this moment, the compressor turns off and the heating element (heater) turns on, which melts the yin on the evaporator. Melt water is discharged into a special pan located above the compressor, where it safely evaporates. The user does not need to do anything - the process is fully automated.
Why is the system called “dry”?
The name comes from the fact that the main heat exchange occurs through dry cold air, devoid of excess moisture, in contrast to the “wet” cold in old models, where the products were covered condensate.
Comparison with No Frost and drip system
To finally understand what “dur cooling” is, it is necessary to compare this technology with two other popular standards: the classic drip system (Direct Cool) and full-fledged No Frost. Many buyers confuse Dry Cooling with No Frost, considering them synonymous, but the difference is significant.
In classic No Frost air circulates very intensively and is often dry. This is ideal for the freezer, where humidity is not needed at all, but in the refrigerator compartment it can cause unpackaged food to dry out quickly. The drip system, on the other hand, maintains high humidity, but requires manual defrosting of the freezer and suffers from uneven temperatures.
Dry Cooling tries to have the best of both worlds. Like No Frost, it does not require defrosting (or very rarely) and ensures an even temperature. Like the drip system, it conserves moisture, preventing food dehydration. This is achieved through a more complex air flow control system.
| Characteristics | Drip (Direct Cool) | No Frost (Full) | Dry Cooling |
|---|---|---|---|
| Defrosting | Manual (freezer) | Automatic | Automatic |
| Humidity | High (risk of condensation) | Low (risk of drying out) | Optimal (controlled) |
| T° distribution | Uneven | Uniform | Uniform |
| Energy consumption | Low | High | Medium/High |
Thus, Dry Cooling is an evolutionary development of the No Frost systemaimed specifically at improving storage conditions in the refrigerator, while classic No Frost often sacrifices humidity for the sake of absence ice.
Advantages of technology for food storage
The main trump card of the system Dry Cooling is the extension of the shelf life of products. By maintaining an optimal level of humidity, vegetables and fruits remain elastic and juicy much longer. Leaf lettuce can remain fresh for up to 7-10 days, whereas in regular No Frost it will turn into a limp mass in 3-4 days.
Meat and fish also benefit from this system. If the humidity is too low, the surface of the meat quickly weathers, forming a dry crust that requires cutting before cooking. In refrigerators this process is slowed down. Products remain presentable and ready to use even after several days of storage. humidity control this process is slow. The products remain presentable and ready to use even after several days of storage.
- 🥦 Vitamins: Less moisture loss means less loss of beneficial microelements in vegetables.
- 🧀 Odors: Air circulation is often accompanied carbon filters that neutralize unpleasant odors, preventing the mixing of fish and strawberry aromas.
- 🧊 No frost: An ice crust does not form on the shelves and walls, which has to be chipped off with a knife.
In addition, the absence of condensation means that you do not have to constantly wipe away puddles on the bottom shelf of the refrigerator. This is not only convenient, but also hygienic, since a humid environment is an ideal place for the growth of bacteria and mold. Dry shelves is the key to cleanliness inside the chamber.
Disadvantages and features of operation
Despite While there are obvious advantages, the technology also has a downside. The first and main thing is energy consumption. The presence of additional fans, heating elements for defrosting and complex electronics increases energy consumption compared to simple drip models. In the long term, this can have a significant impact on electricity bills.
The second disadvantage is the noise level. Running fans create a constant background hum. If modern models have learned to work quite quietly (up to 38-40 dB), then budget options with Dry Cooling can hum noticeably. For studio apartments or open kitchens, this can be a critical factor when choosing.
⚠️ Attention: Do not fill the chamber with products tightly to the eyeballs. For the air circulation system to work correctly, free space is required. If you block the ventilation holes with food, the temperature will be distributed unevenly, and the compressor will wear out.
It is also worth mentioning the price. Refrigerators with advanced cooling systems are always more expensive than their analogues with a drip system. Repairing such equipment can also cost a pretty penny due to the complexity of the design and the cost of spare parts, such as control modules or humidity sensors.
☑️ Check before purchasing
How to properly use a refrigerator with Dry Cooling
For the system to work as efficiently as possible, you must follow simple operating rules. First of all, this concerns the packaging of products. Although the system conserves moisture, opened food will still dry faster than in an airtight container. Use cling film or containers with lids for semi-finished products and cuts.
It is important to keep the ventilation holes clean. They are usually located on the back wall or top of the camera. If you notice that the openings are clogged with packaging, carefully remove them. This will ensure proper air circulation and even cooling.
Do not place hot or warm foods directly into the chamber. A sharp jump in temperature will force the system to work in increased mode, which can lead to the formation of condensation, which the electronics will not be able to deal with immediately. Allow the dish to cool to room temperature before placing it on the shelf.
Check the condition of the door seals regularly. In systems with forced air circulation, a loosely closed door leads to rapid freezing of the evaporator and malfunctions. If the door does not close hermetically, warm, moist air enters the chamber, upsetting the balance. Dry Cooling.
Is it worth overpaying for this function
The answer to this question depends on your habits and budget. If you buy groceries for a week in advance and store a lot of vegetables, fruits and herbs, then overpaying for Dry Cooling is absolutely justified. You will save on throwing away spoiled food and will enjoy more delicious food.
If you prefer to buy food every day, store mostly drinks and semi-finished products frozen, and you rarely have anything left in the refrigerator, then you can consider simpler models. In this case, the difference in the safety of the products will be less noticeable to you.
It is also worth considering climatic conditions. In very humid climates, conventional refrigerators may cry more, and this is where a dehumidification system will come in handy. In a dry climate, on the contrary, the function of moisture conservation comes to the fore. Weigh the pros and cons based on the specific conditions of your kitchen and lifestyle.
Ultimately, Dry Cooling is a step towards comfort. This is not a revolution that will change the world, but a pleasant evolution that makes life a little more predictable and convenient. Modern technologies make it possible to minimize disadvantages in the form of noise and energy consumption, making such models more and more popular.
The myth of complete independence from defrosting
Even in Dry Cooling systems, it is recommended once a year (or when a smell appears) to carry out preventive defrosting of the refrigerator for 10-12 hours with the power turned off to completely clean the hidden cavities from bacteria.
Frequently asked questions (FAQ)
Is it true that you don’t need to wash the walls in Dry Cooling refrigerators?
No, this is a misconception. Although there is less condensation, dust, germs and spilled liquids do not disappear. The chamber must be washed regularly, at least once every 3-4 months, using special products for household appliances.
Is it possible to put a hot pan in such a refrigerator?
It is strictly not recommended in any refrigerator, including models with Dry Cooling. A hot object will create a powerful upward flow of warm air, which will throw off the sensor settings and force the compressor to work at the limit, which will reduce its resource.
Why is there ice in the freezer, although the system is called “dry”?
The term “Dry” (dry) refers primarily to the refrigeration chamber and the absence of condensation in products. In the freezer, the No Frost principle (no frost on food) works by freezing moisture from the air, which settles on the evaporator and is periodically removed.
Does the fan make a lot of noise in such models?
In modern models, the fan noise level is minimized and is often masked by the sound of a running compressor. If you hear a strong whistle or hum, this may indicate a fan malfunction or icing of its blades.