Buffer tank with 1 inox and 2 steel heat exchangers, 1500 liter insulated tank. The stainless steel pipe is used to heat domestic hot water

Buffer tank capacity: 1500 liters
Diameter without insulation: 100 cm
Diameter with insulation: 124 cm

Insulation thickness: 12 cm polyurethane
Height: 222 cm
Weight: 255 kg.

Surface of the stainless steel heat exchanger: 8.22 m2 DN40 inox
Surface of the lower heat exchanger: 3.5 m2 1" steel
Surface of the upper heat exchanger: 3 m2 1" steel
Maximum operating pressure of the tank : 3 bar

Maximum operating pressure of heat exchangers: 9 bar

The size of the pipe sockets:

1" and 6/4" sockets for the boiler and heating system
1/2" sockets for connecting thermometers and sensor sleeves.

More dimensions on the drawing!

Buffer tank with 1 inox and 2 steel heat exchangers.

The stainless steel heat exchanger is heated by the warm water in the tank.

This ribbed stainless steel pipe has a particularly large surface, so that it can heat even fast-flowing water. the boiler heats.
You can connect the solar collector or heat pump to the lower heat exchanger.
It is therefore necessary to connect the solar collector or heat pump system with a heat exchanger, because it contains a different liquid, e.g. antifreeze can circulate.

The 2nd upper heat exchanger e.g. is used for heating with a pellet or gas boiler.

It is not worth heating the entire buffer tank from below with a gas or pellet boiler, these boilers can quickly produce hot water, i.e. you do not need such a large amount of hot water. The solar collector can only produce hot water periodically, so it is advisable to store as much of it as possible, which is why the heat exchanger is located at the bottom.

Each storage tank has a 6/4" connection, into which an electric heating element can be installed (from 2kW to 9kW ), and is used to heat half the volume of the storage tank. to heat in a tank and you don't want to use the hot water for heating, choose an indirect storage tank with a heat exchanger, a boiler, they are enameled, so they are clean, and the drinking water remains in them!