Do-it-yourself heat accumulator for heating boilers

Most of those homeowners who use an autonomous heating system in their housing prefer to install solid fuel boilers. Making such a purchase under the influence of intrusive advertising, few people know that these units have a number of features. In particular, in order to maintain a comfortable microclimate in the room, such a device should be heated around the clock. If the boiler goes out, the coolant cools down and the temperature in the house drops rapidly. The installation of a heat accumulator significantly increases the efficiency of the entire heating system, and also reduces the cost of buying fuel. The boiler can only be serviced at a convenient time without feeling the microclimate in the house.

Features of the heat accumulator and why it is needed

The main task that the heat accumulator is designed to solve is the accumulation of thermal energy and its return at a time when the boiler ceases to produce it. For example, when all the fuel has already burned out. In addition, this device, not only allows you to maintain optimal air temperature, but also ensures the availability of hot water.

Thermal batteries are used in conjunction with solid fuel boilers, as well as electric. With a properly completed installation, the homeowner has every chance of reducing energy costs by 20-25%.

Principle of operation

Representing a well-insulated tank, the heat accumulator works according to a simple scheme. A pipe from the boiler is supplied to it from above, through which water enters. At the bottom is a pump that feeds gradually cooling water back to the heating system. Thus, cold water is replaced by newly heated. Any boiler operates in cycles - turning it off and on. In the presence of a heat accumulator, even at the time of the passive period — that is, until the next fueling, the batteries and water remain warm for some time due to the entry of hot water from the tank into the system.

Opportunities

A consumer who uses a thermal battery can operate the boiler with great comfort. It is enough to heat it only once a day, while the temperature remains stable for twenty-four hours.

DIY heat accumulator: diagrams and process description

If you decide to create a thermal battery with your own hands, you must:

  1. Calculate the volume of the tank.
  2. Determine the appropriate design - the container may be cylindrical or rectangular.
  3. To procure the necessary materials and components.
  4. Assemble and check the device for leaks.
  5. Connect the tank to the heating system.

IMPORTANT! Before calculating the volume of the tank, it is necessary to decide what area can be allocated for its installation.

The volume of the tank will determine how much the heat in the room will last during the boiler shutdown. The photo shows the calculation of the volume for a room of 100 m²:

The best storage device for preserving the heated coolant is a cylindrical tank with convex bottoms. This form allows you to store a fairly large amount of water. Such containers can only be manufactured in the factory.

A home master will greatly facilitate the task if he finds the opportunity and uses a ready-made tank. To do this, you can use:

  1. Cylinders for gas storage and transportation.
  2. Unused containers, which are designed for use under pressure.
  3. Receivers that were installed in the pneumatic railway system.

But, of course, the use of homemade tanks is also acceptable. For their manufacture, sheet metal is used with a thickness of at least 3 mm. Inside the tank there is an 8-15-meter copper tube, 2-3 cm in diameter, previously bent into a spiral. At the top of the tank there is a nozzle for draining hot water, and from the bottom the same for cold water. Each is equipped with a faucet to provide control of fluid intake.

Normal operation of the heat accumulator is based on the movement of hot and cold coolant inside, the time of "charging" the battery. It should be carried out strictly horizontally, and at the time of "discharge" - vertically.

To ensure this movement, it is necessary to ensure the implementation of several simple rules:

  1. The boiler circuit must be connected to the storage tank through a circulation pump.
  2. The heating system is supplied with working fluid using a separate pump unit and mixer, which includes a three-way valve - it selects the required volume of water from the drive.
  3. The pump unit, which is installed in the boiler circuit, cannot be inferior in efficiency to the unit that supplies the working fluid to the heating devices.

Thermal storage

How are tanks insulated? To solve this problem, basalt cotton wool, the thickness of which is 60-80 mm, is considered the best option. Styrofoam or extruded polystyrene is not recommended. Another reason cotton wool is used is its fire safety. Thermal insulation is installed between the tank and the metal casing, which is made of sheet metal - it must be painted.

Watch the video: How a Central Boiler Outdoor Wood Furnace Works Central Boiler (March 2024).

Leave Your Comment