Hi all!

Today I will tell you how to make a refrigerator for a moonshine still with your own hands. I finally sat down to write this article. He kept promising and promising to write it, but kept putting it off. And yet I did it.

Most of the article is devoted to the straight-through refrigerator, because... I use it and think it’s more progressive or something. Why? Read below. I will also tell you how to make a coil for a moonshine still, but more briefly.

The refrigerator design I propose can be assembled in about an hour. The cost of parts will be about 650 rubles.

If you don’t want to work with your hands, you can immediately buy an inexpensive and good refrigerator here Here.

Types of refrigerators

There are two types of refrigerators for moonshine stills – direct-flow and coil. No, of course, our hobby implies a vast field for creativity, and folk craftsmen have probably already made a great variety of refrigerators of various designs and shapes.

But we will consider only classic options.

So, a direct-flow refrigerator is a straight tube made of copper or stainless steel, with a casing (for example, another pipe) on top. Moonshine flows through the inner tube, and coolant (water) through the outer tube. The diagram of such a refrigerator is shown below.

The coil is the same tube, only curled into a spiral, which is placed in a housing with cooling water. Coil diagram:

Detailed drawings and manufacturing instructions are provided in the following sections.

Yes, I almost forgot. There is also a glass refrigerator that can be purchased at laboratory supply stores. But I don’t recommend using it, because... This very fragile device tends to break at any opportunity.

This is especially very dangerous during distillation, because moonshine vapors and condensate are highly flammable substances!

Which is better, coil or direct flow

As I said at the beginning of the article, I use a once-through refrigerator. I can highlight the following advantages::

1. It does not form condensate plugs, which lead to pressure fluctuations in the distillation cube. Pressure changes lead to a sharp boiling of the mash and its release into the refrigerator (splash entrainment). When using a coil, this phenomenon occurs quite often, but in a direct flow it is impossible.
2. In a once-through refrigerator it is easy to regulate the temperature of moonshine selection. It instantly responds to changes in water supply. The coil's reaction is very slow.
3. Its efficiency is higher. Consequently, water consumption and costs are lower.

Of the advantages of the coil, I can only name:

1. More compact sizes (not always).
2. With a certain design, you can do without running water.

Instructions for making a once-through refrigerator

I looked at many different designs and settled on the option of polypropylene pipe and fittings. This is one of the cheapest materials that can be bought at almost any plumbing store or construction supermarket.

My total costs were 678 rubles in one case (option No. 1) and 610 rubles in the other (option No. 2).

The very idea of ​​using a polypropylene pipe does not belong to me, but I came up with the design and technological solutions proposed here myself and have already tested it several times. I offer two options that are easy to do yourself.

We don’t need special tools for manufacturing, and the whole job will take no more than an hour.

• Option #1

So I used:

I assembled it all according to the drawing below. Looking ahead, I’ll immediately show you a photo of what happened.

Step-by-step instruction

Update from 09.14.16 After about 10 distillations, the straight-flow pump began to leak in one place. Apparently the glue dried out and a gap appeared. As a result, I filled all the cracks with aquarium sealant, which was left over after production moonshine still from a pressure cooker. It has already been successfully tested several times in combat conditions.

Update from November 15, 2019

A modification to the cooler design was suggested by blog reader Evgeniy. Below is his text:

I assembled mine from a stainless tube with a diameter of 10 mm and a wall thickness of 1 mm.

The problem for me was the sealing of the end exits. None of the sealants tested work with the polypropylene from which the refrigerator jacket is made. It was literally enough for 1-1.5 times.

Then I bought a stainless steel collet clamp with ½ male thread and a ½ female threaded end sleeve. And now it’s been over a year since nothing has leaked!

I also wanted to say that when using a tube with an outer diameter of 10mm and a PVC pipe as a jacket with a diameter of 20mm, you may get a plug in the path of water in the places where the pipe and tees are welded together.

When soldering these elements on the inside, a kind of bead is formed that fits the tube tightly and prevents the passage of water. At least that’s what happened in my first refrigerator. I had to take PVC pipes and other things with a diameter of 25mm.

Option No. 2

This option differs in that I used a copper pipe with a diameter of 10 mm and a polypropylene pipe with a diameter of 20 mm. In this case, transition couplings are excluded from the design, and the plugs are inserted directly into the tees. Photo below:

Due to this and the smaller diameters of the tubes, the direct-flow unit turns out to be a little cheaper and lighter, but its throughput is also reduced. Recommendations for selecting steam wand diameter and other dimensions are given in the next section.

1. I came to the conclusion that the following dimensions are the most optimal: the length of the water jacket (casing) is 50-60 cm, the one-sided gap between the tubes is 1-1.5 mm. In my first version, this ratio is not maintained, but then I had not yet made any definite conclusions.
2. When selecting, pay attention to the wall thickness of the polypropylene pipe in order to maintain the required gap. For example, a pipe Ø20 mm has a wall of 3.4 mm and an internal diameter of 13.2 mm. And for Ø25 mm, the wall is 4.2 mm and the internal Ø16.6 mm.
3. The thinner the wall of the copper pipe, the better the heat is removed from the steam. It is better to use tubes with a wall thickness of no more than 1 mm.
4. The cooling water must move towards the steam, so its supply must be connected on the opposite side from the steam inlet. As shown in the diagram at the beginning of the article.
5. The normal operating position of a once-through refrigerator is a vertical position, in which the condensed moonshine flows freely downwards. This ensures its maximum efficiency and eliminates the formation of condensate plugs.
6. The copper tube must be cleaned with a brush after each distillation. Or at least rinse under hot water pressure. Otherwise, poisonous copper sulfate will form.

Instructions for making a coil

The main stages of coil manufacturing are as follows:

1. Take a copper or stainless steel tube with a diameter of 10-12 mm. Length from 1.2 to 1.5 meters. Wall thickness 0.8-1.0 mm. Less than 0.8 is easy to damage during manufacturing. More than 1 mm is very difficult to bend and their thermal conductivity also deteriorates.

Copper tubes in stores are sold annealed and unannealed. An unannealed tube cannot be bent, so it is not suitable for us.

That's all. This is where I end. Perhaps I will further refine the design of the refrigerator; I have some ideas. Subscribe to updates and I will keep you informed of all changes. If you have questions, ask in the comments. Also curious, what kind of refrigerator do you use? Did you make it yourself or buy it?

Bye everyone. Dorofeev Pavel.

Before moving on to a consideration of the refrigerator manufacturing technology, it is necessary to say a few words about what this structural element is used for and what it represents. To begin with, it is important to understand the very principle of operation of a moonshine still.

• The prepared and fermented mash is placed in a distillation cube.
• When it is heated to a certain temperature, it evaporates. The essence of the process is that the evaporation temperature of alcohol is slightly lower than that of water or the bulk of fusel oils, so the initial separation into its constituent components occurs.
• Alcohol-containing steam moves through a system of tubes into a cooler, inside which the steam condenses and the output is moonshine.

This description is simplified as much as possible, since the design of a moonshine still usually contains additional elements, such as a steamer or a bubbler, but in the context of the article, their consideration is inappropriate.

Moonshine still design

So, one of the main stages of obtaining a distillate, which is moonshine, is the condensation of alcohol-containing steam. In order for this process to occur more intensively, a refrigerator for a moonshine still is designed.

Refrigerator design

As for the technological device, the cooler most often consists of a coil and a sealed reservoir with circulating coolant. There are other manufacturing options, but it is the direct-flow refrigerator that is most efficient combined with simplicity of design, and therefore manufacturing. For a more complete understanding of the issue, it is worth considering it in a little more detail.

Refrigerator coil

The coil's twisted shape allows it to cool the steam on its own. There are varieties of refrigerators in which the cooler is not equipped with additional chambers, and the process occurs upon contact with air. The efficiency of such a system will be lower than when using a full-fledged refrigerator, but it will work. The presence of an additional chamber is due to the fact that during operation the coil heats up from the action of steam, so it is not enough to simply pour water inside the chamber. The cooler must be direct-flow, since only in this way will it be possible to ensure the constant temperature necessary for effective condensation of alcohol-containing vapors.

So, a refrigerator for a moonshine still that is optimal in its functionality should consist of the following elements:

• A sealed tank, the dimensions of which will be sufficient to accommodate a coil inside it and sufficient for water circulation. You can often see refrigerators with stainless steel tanks, but recently systems using elements made from polypropylene pipes are gaining popularity due to their simplicity of design.
• The coil itself is made of a material that is resistant to mash vapors, as well as water, and is not prone to deformation under the influence of temperature changes. You can make a refrigerator for a moonshine still with your own hands using a coil made of a copper tube, a stainless steel tube or a polyethylene tube.
• Two valves for water inflow and outflow.

As for the coil, its extreme end, which extends from the wall of the refrigerator and is the outlet for the entire system, can be equipped with a tap that will allow the system to be shut off, which is important when the device is not in use.

Making a refrigerator

Making a refrigerator for a moonshine still is not so difficult if you know the technology for assembling this element. The tank itself can be made, for example, from stainless steel or polypropylene plumbing pipes. If we take into account the difficulties in working with stainless steel (it is difficult to weld elements) and the prevalence of polypropylene today, then the second option would be more appropriate. It will be discussed below.

Let's take a polypropylene pipe as a base.

Tools and materials

In order to make a direct-flow cooler, you will need a small set of tools and a certain amount of polypropylene elements used in plumbing.

• Plumbing plugs – 2 pcs.
• Plumbing coupling suitable for diameter plugs – 1 pc.
• Connecting element with coupling and narrowing at the ends – 1 pc.
• Cable gland PG-29 – 2 pcs.
• Plumbing fitting – 2 pcs.
• Copper or corrugated stainless steel tube about 2 m long
• Feather drills
• Silicone sealant
• adjustable wrench
• Screwdriver or drill

The entire set can be easily purchased at a plumbing store without requiring a large investment.

Build process

If all the tools and materials are ready, you can proceed to the assembly process. The work should be divided into several stages, which must be performed sequentially.

At this point, the main stages of work on assembling the refrigerator for the moonshine still can be considered completed. All that remains is to connect the coil to the rest of the system and run water through the fittings. Moreover, it is worth paying attention that the water circulation should be organized in such a way that the upper valve will be the outlet and the lower the inlet. This way the system will function most efficiently.

In conclusion, it is worth adding that the homemade refrigerator for the moonshine still obtained as a result of the described manipulations will not be inferior in functionality and efficiency to analogues manufactured at the factory. It is only important to show a little diligence and comply with the necessary assembly conditions.

A coil is an essential part of a moonshine still, designed to condense alcohol vapor by removing heat with water or air through the walls. Despite the complex definition, anyone can make a coil at home. The homemade version will work no worse than store-bought counterparts. We will look at the theory and practice of manufacturing.

Coil parameters:

1. Material. The most important factor influencing the safety and taste of moonshine. The coil material must not react with alcohol or be toxic, but still have sufficient thermal conductivity to allow alcohol vapor to condense.

Taking into account the requirements, you can make a coil from copper, aluminum or stainless steel. Glass is also a suitable material, although it is easier to buy a ready-made glass coil at a chemical store than to make something similar yourself.

Copper has the best thermal conductivity, but many moonshiners consider it a toxic material; in fact, this is not the case. For example, for several centuries the French have been distilling all strong alcohol in alambiks - special copper distillers, and so far no one has been poisoned. Aluminum is in second place in terms of thermal conductivity (1.6 times worse than copper), but it is relatively cheap, accessible and easy to process. Stainless steel coils are 3-4 times inferior to copper ones; moreover, the exact brand of stainless steel is not always known, and only food-grade ones are suitable for home brewing, which can withstand high temperatures and do not react with alcohol.

Copper coils are the most efficient

2. Dimensions. The longer the tube, the larger the area of ​​contact between vapor and water (better cooling), but at the same time the hydraulic resistance increases (the distillation speed decreases). The correct length of the coil in a moonshine still (the tube itself before curling) is 1.5-2 meters.
The larger the cross-section (inner diameter) of the tube, the larger the contact area and the lower the resistance. I recommend using a tube with an internal diameter of 8-12 mm.

The small thickness of the coil wall increases thermal conductivity, improving condensation, but tubes that are too thin are difficult to process and operate because they are very fragile. In addition, when two media come into contact, in our case condensed alcohol and steam, the thermal conductivity drops sharply, regardless of the size and material of the wall. The optimal thickness of the coil tube is 0.9-1.1 mm.

3. Orientation in space. The coil can be positioned vertically, horizontally or obliquely. In moonshine brewing, it is desirable to use a vertical connection scheme, in which the condensed distillate flows by gravity and does not create additional obstacles to the movement of steam.

Vertical coils can be ascending (steam goes from bottom to top) or descending (from top to bottom). For minimal resistance, steam should be supplied from above.

4. Cooling system. The coils are cooled with water, ice and air. The last two options are less effective and require complex structures, so we will not consider them further. Water cooling systems can be open - they work on running water, and closed - the tank is immediately filled with the required amount of water. The design of closed systems is simpler, but they cool worse; the moonshine often comes out warm, and after a couple of hours of distillation, even hot.

In open systems, water circulation cools the coil much better, and the moonshine turns out cold. In addition, flow-through designs use a smaller volume water tank, resulting in a more compact device.

It is correct to supply water from below and remove it from above. For normal cooling, the water must move towards the moonshine, otherwise the lower part of the coil will not cool well. This scheme is called "counterflow mode".

Coil manufacturing technology

You will need a copper, aluminum, brass or stainless steel tube 1.5-2 meters long, with a cross-section of 8-12 mm and a wall thickness of 0.9-1.1 mm. I advise you to find a housing (reservoir) in advance to install the coil. The coiling diameter of the pipe depends on the size of the housing. For example, a plastic sewer pipe with a diameter of 75-80 mm is suitable. For effective cooling, the coil must occupy at least 15-20% of the tank volume.

The coil installed in the housing is called the refrigerator of the moonshine still, the drawing is shown in the photo.



Subsequence:

1. Fill the tube tightly with dry bulk material, for example, river sand or soda, so that the metal does not flatten when curling. As a last resort, you can fill the tube with water and freeze it.

2. Place wooden choppers (pegs) on the ends of the tube. An alternative is to solder or clamp tightly. It is advisable to weld a nut on one end.

3. Wind the tube onto any smooth object with an even circular cross-section of the required diameter (in the example, 35 mm) with a pitch between turns of 12 mm.

4. Release the ends of the coil, pour out sand, and rinse with running water.

5. Install pipes for water supply and drainage on the cooler body.

6. Place the coil in the housing, install plugs at the top and bottom, and seal all connections with superglue or another method.

Finished metal refrigerator

Many owners make moonshine on their own, so they are concerned with the question of how to make a coil for a moonshine still with their own hands. The coil is one of the main elements of a moonshine still, since it is in it that alcohol vapors condense, and thus homemade moonshine is obtained.

Most often, the coil mechanism looks like a spiral, although there may be other designs, but this is the simplest, most reliable and effective.

The coil is designed to transfer the temperature of the external environment to the steam that passes inside it. For a moonshine still, the least expensive is the spiral design, which you can make yourself. Sectional or plate versions can also be used, but they are bulky and have a complex design, so they are usually not used in home brewing.

Making a coil with your own hands

If you are interested in the question of how and what to make a coil for a moonshine still with your own hands, then the best option would be a spiral type design. When creating it, you can do everything yourself, and you can do without hot soldering and without using a welding machine.

The best coil material you can make yourself is stainless steel or copper. These materials do not react with evaporating substances and have high thermal conductivity characteristics, which allows steam to condense efficiently and quickly.

To carry out the work, it is best to take a copper tube, which is easier to work with; its length should be about 2 m to ensure the normal process of steam condensation. You will also need an axis on which to wind the tube and create a spiral from it.

Before carrying out work, the tube must be filled with sand, which will ensure the creation of a beautiful and even spiral, without kinks.

The work is carried out as follows:

• as a spiral you need to take an even cylinder or stick of the required diameter;
• wind the tube with sand onto the axis, and it is necessary to maintain a certain pitch between the turns;
• remove the finished spiral from the axis;
• pour sand out of the spiral and rinse it well with running water;
• All that remains is to connect the coil with the distillation cube, and direct the other end into a container for collecting moonshine.

Thus, we get a basic air-cooled moonshine still, but in order for it to work effectively, it is necessary to make a long coil.

The main task when creating a moonshine still at home is to obtain the maximum amount of the finished product, so distillation will be most effective when water cooling is used rather than air. If the coil is water-cooled, then it can be significantly smaller in size, therefore the moonshine still will be more compact and mobile, and the yield of moonshine will be greater.

Creating a flow-cooled coil

If you decide to make your moonshine still with flow cooling, then this design will not only work reliably, but also work more efficiently.

This design is a little more complicated than the previous one, but it is also quite simple, so it is not difficult to do it yourself. To create it we will need:

• any sealed container that is suitable in size so that the made coil can be immersed in it;
• a copper tube to create a coil, a sufficient length of 1.5 m, an outer diameter of 10 mm and a wall thickness of 1–2 mm;
• an axis with a diameter of 50 mm on which the coil will be wound;
• tubes with which the coil will be connected to the distillation tank;
• tubes for supplying and draining water from the cooling tank;
• sealant.

The work is carried out in the following sequence:

• the tube on one side is plugged with a stopper and filled with sand so that it does not flatten during curling, after which the other side is closed;
• wind the spiral, then remove the plugs and remove the sand;
• holes are made in the water tank in the upper and lower parts through which water will be supplied and discharged;
• we insert the tubes hermetically into the prepared holes, with cold water being conducted from below and hot water being discharged from above;
• in the lid and bottom of the prepared container we make holes for the coil, into which the beginning and end of the spiral are inserted and everything is sealed well;
• All that remains is to check the tightness of all joints, supply water, and install a pipe to drain it;
• We connect the upper tube of the coil to the distillation cube, and take the second one into a container for receiving moonshine.

This design, although a little more complex than that with air cooling, is more convenient, efficient and has high performance.

Selecting material for the coil

When choosing the material from which the coil will be made, it is necessary to take into account that it has the following characteristics:

• it should not react with the products that are released during the evaporation of the mash;
• high thermal conductivity;
• high durability;
• it must be strong and at the same time flexible so that a coil can be made from it;
• should be accessible and have a relatively low cost.

The optimal materials for the coil are copper and stainless steel, which have the necessary characteristics and low cost.

Silver is good, but it is expensive, the use of aluminum leads to the formation of harmful substances, and glass is very fragile.

The container into which the spiral will be immersed has no contact with the resulting product; ordinary water flows through it, so the requirements for it will not be so serious.

Review of materials

Copper is most often used to make coils because it is soft, easy to bend, and has high thermal conductivity.

To bend the tube, it must be preheated. When bending the spiral, take into account the diameter of the tube - the bending radius should not be less than three times the diameter of the tube.

Although copper has many advantages, it is not a completely inert material, so when steam passes through the tube and comes into contact with oxygen, copper oxide is formed, some of which ends up in the finished product.

Although stainless steel dissipates heat well and has high strength, you will need a special pipe bender to bend it. In addition, such a coil will turn out to be very heavy, so it is necessary to make an appropriate support for it, and this is an additional cost, which is also its disadvantage.

Glass is rarely used for the manufacture of this element of a moonshine still, since it is impossible to bend it yourself, so you will need to hire a specialist for this, and this entails additional costs. In addition, problems may arise when connecting glass parts.

Despite this, some specialists use glass coils, as they produce a very high-quality product that does not contain any off-flavors, as can be the case when using other materials.

You can very simply make a cooler from a metal-plastic tube that bends well. Plastic is chemically neutral. The disadvantage is that it is a rather elastic material and the coil does not hold its shape well. To eliminate it, you can make a special frame for it.

Before choosing a material, you must study all the advantages and disadvantages of existing proposals, while taking into account your wishes and capabilities.

Calculating the length of the cooler

Before you make a cooler with your own hands, you need to calculate what its length should be. Making accurate calculations is a rather difficult task; for this you need to have special knowledge and take into account such parameters as the speed of steam and water supply, thermal conductivity coefficients of the materials used, the volume of passing steam and other indicators.

If you are making a coil with your own hands, then you can take advantage of your existing experience. If you have a tube with a diameter of 12 mm and its wall thickness is 1–2 mm, then its length of about 1.5 m will be enough, and you can get up to 3–4 liters of moonshine per hour.

Possible breakdowns and their elimination

If you made a cooler with your own hands, then be prepared for the fact that sooner or later it may fail, so you need to know how it can be restored.

During manufacturing, some craftsmen pay little attention to ensuring the tightness of the joints. If the coil is metal or metal-plastic, then if it breaks, the distillation process is stopped and the fasteners are replaced. If glass parts are used, they may need to be completely replaced.

If the coil starts leaking, you will notice a strong smell of moonshine in the room. In this case, distillation is stopped, after which a hole is found and sealed with sealant.

There are no particular problems with repairing the coil, and if you managed to make it yourself, then you can also repair it yourself.

Summarizing

As you can see, making a moonshine still at home is not difficult, and any home craftsman can cope with this task.

It is best to take a tube made of stainless steel or copper, as they have the necessary parameters and are low in cost.

When choosing a cooling method, it is better to choose not air, but water. All this work can be done independently, without the involvement of specialists.

There are two types of capacitors: coil and direct-flow.

A coil is a tube coiled into a spiral. Due to its considerable length, the steam passing through it has time to cool to the condensation temperature. The effectiveness of this design directly depends on the length of the tube used to create the coil.

The easiest way to think of direct flow is as a tube through which steam flows, inserted into a tube with a cooler. There are a variety of variations: a tube with several thickenings throughout, a straight tube, a tube bent in a zigzag, and so on. But the point remains the same: it is important that the area of ​​the inner tube be as large as possible. Then it will be possible to transfer more energy (heat) from the steam to the cooler.

Refrigerator materials

A refrigerator for a moonshine still is made from a variety of materials. But the four most popular are:

1. Stainless steel;
2. Copper;
3. Aluminum;
4. Glass.

The first material is found on almost every factory-assembled moonshine still. It was chosen due to its price and ease of cleaning.

Copper is found in more expensive models. Has much higher thermal conductivity. In order to condense the same amount of alcohol from steam, all other things being equal, you will need much less copper tube. Through it, heat is removed more efficiently, due to which alcohol passes from gaseous to liquid state earlier.

Aluminum is a popular material. Almost any homemade moonshine still cooler consists of it. And all thanks to adequate thermal conductivity, low price and easy availability of aluminum tubes.

Glass. Conducts heat well. In addition, it is also transparent, thanks to which you can control the condensation process. Doing it yourself is unrealistic. Sold in chemical supply stores.

How to make a refrigerator for a moonshine still

To begin with, we suggest deciding what we need: autonomy or efficiency. There is no middle ground here. The exception is the homemade “Kulibins”, when the coil is immersed in a river, which provides cold running water. But this option is too complicated, so we will not consider it. Our task is to make a copy of the refrigerator with minimal expenditure of time, effort and money.

Autonomous cooling for moonshine still

An autonomous cooling system is not that difficult to manufacture. We will need a coil already bent into a spiral, a bucket, fum tape, plasticine, a drill and a metal drill. The diameter of the drill is equal to the diameter of the coil tube.

To begin, we insert the coil into the bucket and try on where its lower end will come out. Make a mark on the bucket and drill a hole in this place. Now we insert the coil into the seat, connect it to the moonshine still, and only after that isolate the place where the coil exits the drilled hole. For insulation, fum tape is ideal, wound in several layers with a wedge around the place where the tube comes out of the bucket. If this seems not enough to you, then you can additionally coat the joint with plasticine. And only after completing all the above operations can you pour water into the bucket. Now we periodically test the water in the bucket with our finger. As soon as it heats up, it needs to be cooled down immediately. To do this, simply select the heated one and pour in the cold one. The system is simple and straightforward.

You can make a small improvement: drill another hole in the side of the bucket and insert a drain valve into it. You won’t need a lot of time and money, but it will save you nerves and effort!

Stationary system

Now we will make a flow cooler for the moonshine still. Moreover, we will only have to spend money on the tube and electricity. Everything else can be obtained for free. So, we will need:

• 1 meter silicone tube;
• 1 liter plastic bottle;
• Autogen gas lighter (turbo lighter);
• Scissors.

So let's get started. First, make a hole in the bottom of the bottle the same size as the silicone tube. By the way, you need to use a silicone tube. Rubber and its ilk may affect the taste or benefit of the final product.

Now we insert a third of the hose through the neck and take out its small end on the other side. By the way, the removed end can already be fixed by fusing the hose and plastic together. Now we begin to rotate the end that comes out of the neck around the longitudinal axis. Under the influence of twisting forces, the hose will begin to twist into a spiral. Now, continuing to twist, we gradually insert the hose into the bottle. Ideally, it should remain in the form of a spiral even after fixing both ends. After this, we wrap the fum tape on the remaining end in a layer sufficient to form a cork that can plug the neck of the bottle.

The next step is to burn two holes in the side of the bottle. One is at a distance of 5 cm from the neck, and the second is at a similar distance from the bottom. In both resulting holes we insert a pipe through which coolant will flow.

Conclusion

Using the schemes described above, you can make a refrigerator for a moonshine still with your own hands in a matter of minutes. Each of them will take no more than an hour to make. And they will function no worse than purchased samples for tens of thousands of rubles.

As for the calculations for the refrigerator, they are not necessary. The main thing is that the diameter of the tube is at least 10 mm, and its total length is at least 1 meter. If the coolant is flowing, then this is enough. For a system with a bucket, you will have to take a longer tube - 2 meters and it is important that it is made of metal.