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Oct 24, 2021
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Do-it-yourself rotary recuperator – an interesting idea of ​​saving heat

How to make a recuperator with your own hands

In living quarters, it is very important to provide access to fresh air. However, when airing in the cold season, there is a significant loss of heat. As a result, heating costs increase. To minimize heat loss during ventilation, recuperators are used. They simultaneously provide the outflow of air from the room and the inflow of fresh oxygen from the street. At the same time, they take heat from the outgoing stream, and due to it they heat the supplied air. Such a device can be assembled by hand.

Materials:

  • Thin pipe 4-10 mm;
  • galvanized;
  • threaded rod 6-10 mm;
  • bearings – 2 pcs.;
  • electric motor;
  • drive belt.

Rotary recuperator manufacturing process

The length of the recuperator must correspond to the thickness of the wall, or less. It is necessary to measure its cross section, and then cut thin metal tubes that will be used as a filler for the cylindrical body of the device.

How to make a recuperator with your own hands
How to make a recuperator with your own hands

Then you need to make the recuperator rotation axis. To do this, it is necessary to prepare a threaded rod, which will exceed the length of the prepared tubes by 30-40 mm.

How to make a recuperator with your own hands
How to make a recuperator with your own hands

A disc is cut out of the sheet for the diameter of the future recuperator rotor. It is necessary to mark the center on it, and cut out the inner surface, leaving 3 knitting needles.

How to make a recuperator with your own hands
How to make a recuperator with your own hands
How to make a recuperator with your own hands

Next, you need to make a cylindrical rotor housing. To do this, 2 discs of the same size as the previous part are cut out of wood or plywood. Using them as a template, you need to roll a cylinder out of tin and connect it with rivets. The hull should get 10 mm longer than the harvested felling.

How to make a recuperator with your own hands

Tubes fit tightly into the cylinder. The axis should be located in the center. Then a tin circle is installed and the end of the cylinder is cut with scissors. After that, you need to bend the walls of the body to fix the flange.

How to make a recuperator with your own hands
How to make a recuperator with your own hands

To install the rotor, you need to make 2 fasteners from plywood or board. They are drilled through a hole into which it is pressed into a bearing with an inner diameter corresponding to the axis of the stud. They will be screwed to the wall, and thus the rotor will be able to rotate.

How to make a recuperator with your own hands
How to make a recuperator with your own hands
How to make a recuperator with your own hands
How to make a recuperator with your own hands
How to make a recuperator with your own hands

Next, you need to ensure the rotation of the rotor. For this, an electric motor is installed. A drive belt is pulled between it and the rotor. Such a drive can be hidden in the wall, or taken out of it. In the latter case, the link will be performed not with the rotor itself, but with a protruding axis.

How to make a recuperator with your own hands

Air outflow will occur through part of the tubes, and inflow through the second half. By rotation, this is done through the same tubes in turn. First, warm air will come out, which will warm up the metal, then cold air will come in and take this heat. The effectiveness of this device can be seen on the thermogram.

How to make a recuperator with your own hands

Half of the tubes are clearly warmer, but when they turn around, they cool down, and the previously cold ones heat up.

How to make a recuperator with your own hands

Watch the video

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