The question of the content of non-ferrous metals in household appliances often arises not only among repair enthusiasts, but also among those who plan to recycle old equipment. Biryusa refrigeratorbeing one of the most popular brands in the post-Soviet space, it often becomes the object of such interest. Owners want to know the real cost of the equipment being handed over, and repairmen are looking for donor spare parts to restore other units.
Many people mistakenly believe that kilograms of pure copper are hidden inside the case, but the real picture is much more complicated. Modern production technologies and constant cost optimization force manufacturers to use alloys and substitutes. In this article, we will look in detail at what the heat exchanger and compressor actually consist of, and whether disassembling is worth the trouble.
It is worth understanding that the weight of useful scrap directly depends on the year of manufacture of your model. Equipment produced during the Soviet period and in the first years of independent Russia differs significantly in material consumption from units produced after 2010. Therefore, the answer to the question “how much copper” cannot be an unambiguous number without reference to a specific series and date of manufacture.
Design features of Biryusa heat exchangers
The main source of non-ferrous metals in the refrigerator is the refrigeration circuit. In the classic design, it consists of two main elements: a condenser (located at the back or built into the walls) and an evaporator (located inside the freezer or refrigerator compartment). This is where the refrigerant circulates, and it is these tubes that scrap collectors are most often interested in.
In older models produced before the mid-90s, engineers used primarily copper tubes for the entire circuit. Copper has excellent thermal conductivity and ductility, which made assembly reliable and repairs relatively simple. However, the high cost of raw materials dictated their conditions, and manufacturers began to look for alternatives.
⚠️ Attention: In modern Biryusa models (especially with the No Frost system), the evaporator tubes are often made of aluminum or copper-plated steel. An attempt to solder such connections with ordinary solder without special fluxes will lead to depressurization of the system.
Starting from the late 90s, steel began to be widely used in the design of capacitors (black grille on the back). This made it possible to reduce the cost of the unit, but made it less repairable at home. Aluminum is more difficult to solder, it is more fragile under mechanical stress, but its content in scrap is valued lower than that of copper. aluminum or steel. This made it possible to reduce the cost of the unit, but made it less repairable at home. Aluminum is more difficult to solder, it is more fragile under mechanical stress, but its content in scrap is valued lower than that of copper.
Analysis of the contents of the compressor
The heart of any refrigerator is the compressor. It contains the highest concentration of non-ferrous metals that are of interest for recycling. Inside the sealed housing there is an electric motor, the windings of which are traditionally made of copper.
However, as in the case of tubes, there are some nuances here. In old, heavy Soviet compressors, the weight of the copper winding could reach significant values. Modern units, especially inverter type or energy efficiency class A+ and higher, often use windings made of aluminum or composite materials. This reduces weight and cost, but also reduces the yield of precious metals during disposal.
Disassembling a compressor is a labor-intensive and potentially dangerous process. Inside there is oil that needs to be drained, and the body itself is made of thick steel, which needs to be opened with a grinder. To obtain copper from the windings, you also need to clean them of lacquer insulation, which is practically impossible to do at home efficiently.
How much does copper weigh in a compressor?
On average, from one old compressor you can get from 0.5 to 1.2 kg of copper wire. In modern models, this weight may be less due to the use of aluminum and the reduction in engine dimensions.
It is important to note that the compressor itself as a unit may cost more as a repair part than the cost of the scrap it contains. Therefore, before sawing a working motor, estimate its market value on the secondary spare parts market.
Differences between models of different years of manufacture
To accurately determine the potential yield of copper, it is necessary to classify the refrigerator by year of manufacture. The brand Biryusa has a rich history, and technology has changed over the decades. We can identify three main groups that will help you navigate.
The first group is the “classics” of the 70-80s. These are massive units with external condensers made of copper tubes with welded steel fins or all-copper coils. The compressors in them were also “cast iron” with a high copper content in the windings. The weight of such a refrigerator is large, and the yield of non-ferrous metal is maximum.
The second group is the transition period of the 90s and early 2000s. Here the active introduction of aluminum into circuits is already beginning, but copper is still found quite often, especially in models of the middle and high price segment. Condensers may be steel, but evaporators were often made of copper.
The third group is modern technology. Aluminum evaporators (often glued to the back wall inside the chamber) and steel or aluminum condensers dominate here. Copper is used minimally, mainly in connecting elements and, possibly, in part of the compressor windings, but in much smaller volumes.
Table: Approximate content of non-ferrous metals
For clarity, we present data that will help you estimate the approximate weight of scrap. Remember that these figures are averages and may vary depending on the specific modification and year of manufacture.
| Item type | Material (Old models) | Material (Modern models) | Approximate weight (kg) |
|---|---|---|---|
| Condenser (grid) | Copper / Steel | Aluminum / Steel | 1.5 - 3.0 |
| Evaporator (in the chamber) | Copper | Aluminium | 0.5 - 1.5 |
| Compressor winding | Copper | Copper / Aluminum | 0.5 - 1.2 |
| Pipelines | Copper | Steel / Aluminum | 0.2 - 0.5 |
The table shows that the main weight falls on the condenser and compressor. However, in modern models, copper in these units is often replaced with cheaper analogues. Therefore the real yield of pure copper from a modern Biryusa refrigerator can be less than 1 kg, whereas in older models it reached 3-5 kg.
Economic feasibility of disassembly
Is it worth disassembling the refrigerator for the sake of non-ferrous metal? Let's do the math. To extract copper, you will need to disassemble the device completely: remove the housing, cut out the thermal insulation, dismantle the condenser and evaporator, and also open the compressor.
This process requires time, tools (grinder, wire cutters, soldering torch) and physical effort. In addition, you will have to dispose of tons of ferrous scrap (case, shelves, steel pipes), the removal of which may also cost money or require a separate organization.
⚠️ Attention: When disassembling the refrigerator, you absolutely cannot simply release freon into the atmosphere. Refrigerants destroy the ozone layer. For legal disposal, you must call a specialist or take the device to a specialized center, where the gas will be pumped out with professional equipment.
If we consider the cost of scrap, the price of copper is high, but the price of mixed scrap (copper with solder, steel and insulation) is much lower. Receiving points often underestimate the cost of unrefined copper. On the other hand, entire components, such as a compressor or thermostat, may be lost as spare parts.
Practical advice on disposal and repair
If your goal is not scrapping, but searching for spare parts to repair another refrigerator, then the approach should be different. It is important for you to maintain the integrity of the nodes. When looking for a donor for Turkies pay attention to the compatibility of compressors in terms of power and type of refrigerant.
When dismantling copper tubes for subsequent use (for example, for homemade products or repairing other equipment), try to cut them with a pipe cutter rather than grinder so as not to clog the internal cavity with metal shavings. This is critical to maintaining the functionality of the system.
☑️ Action plan for disposal
It is also worth remembering about safety. Older refrigerators may contain asbestos in the insulation (in very old models) or toxic substances. Wear a respirator and gloves. Polyurethane foam used in modern models emits toxic gases when burned or overheated.
In conclusion, the amount of copper in the Biryusa refrigerator is a variable value. It depends on the era in which your unit was created. Old technology is rich in non-ferrous metals, but it is becoming less and less available. The new technology is more environmentally friendly and cheaper to produce, but is less interesting for the “extraction” of resources using an artisanal method.
Frequently asked questions (FAQ)
Is it possible to determine the presence of copper in pipes by appearance?
Yes, copper has a characteristic reddish-golden hue when cut. Aluminum is silver-gray, steel is also gray, but magnetic. If the tube is not magnetic and has a reddish color, it is copper. However, modern tubes can be covered with paint, so it is better to make a small file in an inconspicuous area.
How much does it cost to scrap a Biryusa refrigerator?
The price depends on the region and the current exchange rate for non-ferrous metals. Typically, refrigerators are accepted as mixed scrap or black scrap with a premium. On average, for the whole device they can offer an amount equivalent to the cost of 15-25 kg of ferrous metal, if you do not evaluate the copper capacitor separately.
Is it dangerous to open the compressor yourself?
Yes, it is dangerous. Inside the compressor there is oil under pressure, as well as freon residues. When opened with an angle grinder, oil vapors may ignite or fragments may fly away. In addition, compressor oil is a waste of hazard class 3-4 and requires special disposal.
Are there precious metals in Biryusa refrigerators?
The contacts of thermostats and start relays may contain silver, but its amount is microscopic (fractions of a gram). Industrial mining of silver from household appliances is not economically feasible at home.