P32-EN – Subject to technical changes 04.11
6
Information about the system
2.1 SolvisStrato stratified buffer tank
SolvisStrato Stratified Buffer Tank
The SolvisStrato stratified buffer tank was designed espe-
cially for use in solar systems. It is the core element of
your heating system. In the Low-Flow System from Solvis,
your SolvisStrato can be used with all collector surfaces
up to 40 m².
In closed systems, an insulating jacket encases the steel
container. All connections are routed downward underneath
the insulation. The pipelines connect your SolvisStrato with
the hot water station (
section 2.2
), the boiler (
see oper-
ating instructions of the manufacturer
), the heating cir-
cuits and the solar heat transfer station (
section 2.3
).
The stratified charging system
One of the essential features of the stratified buffer tank is
the separation of the water into three zones:
• Hot water buffer layer
In the uppermost layer, there is hot water for heating of
drinking water. Depending on the tank size, 90 to 200 l
are stored here, so that enough water is heated for small
and average dispensable amounts even at times when
there is no auxiliary heating, e.g. at night.
• Heating buffer layer
The middle layer contains hot water for the heating.
• Solar buffer layer
The lower layer contains colder water to be heated by the
solar power system.
The heat from the collector is delivered into the secondary
solar circuit using the solar heat transfer station. The solar
flow discharges into a pipe with membrane flaps in the
storage tank – the stratified charger. These two elements
work in the following way (
figure on right
):
The external solar heat exchanger transmits the heat gen-
erated by solar power to the water in the tank. The water in
the tank rises. Then the stratified charger ensures that it is
layered according to temperature: hot water at the top, hot
water below.
Please contact your installation firm if you have any
questions regarding the function and control of your
system.
The Solvis stratified charger principle
