What are Plastic Accumulation Tanks (Thermal Stores)
AkuPlast Plastic Accumulation Tanks (Thermal Stores) are plastic pressure vessels embedded in a precisely shaped hard polyurethane insulation with a resistant, washable plastic mantle. Thermal loss is reduced to minimum even when the vessel is buried underground.
They permit installation outside a house - underground version
Should you lack place for installing a thermal store inside your home, you can choose to use an APZ thermal store and bury it underground next to your house. Its presence will be marked by its plastic lid only. As its insulation properties are excellent, its heat loss will be markedly lower than in a standard accumulation tank. The plastic material used guarantees a long service life (expected 50 years at 60°C water temperature inside the tank).
Advantages of a pressure version of thermal store
This pressure heat accumulation tank is filled with heating water. It is charged directly from a boiler or a heat pump, discharged directly into a radiator circuit. In plastic pressureless tanks currently available on the market charging and discharging needs to be performed via heat exchangers.
Models also with integrated stainless steel heat exchangers for solar heating and DHW heating
There are models available that are designed purely for heating water accumulation (suitable e.g. for wood-fired boilers, hydronic fireplace inserts) as well as models with integrated heat exchangers. The latter enable DHW heating (the water to be heated rises gradually from the bottom, cooling the lower tank section which increases the efficiency of solar collectors) and heating the tank from solar collectors. In some models, the upper tank section is fitted with another heat exchanger or a socket for an electric immersion heating element.
Variable connections and stratification
Four inlets/outlets for heating water - two in the top, one middle and one lower with a special anti swirl end - enable to control temperature layering in the tank (stratification) and so increase the efficiency of renewable energy sources - solar collectors, heat pumps or advanced condensing boilers.
|11889||AP 400 2WSE AkuPlast Heat Accumulation Tank
indoor version, 790mm diam. incl. insulation, 1982mm height, 1.45 m2 lower heating coil, 4.68 m2 ...
|11888||AP 750 3WS AkuPlast Heat Accumulation Tank
indoor version, 1006mm diam. incl. insulation, 800mm without insulation, 2160mm height, 1.91 m2 ...
|11887||AkuPlast Heat Accumulation Tank - APZE 750
underground version, 960mm diam. incl. insulation, 2510mm height, no heating coils, no DHW heating, ...
|11886||AkuPlast Heat Accumulation Tank - APZ3WS 750
underground version, 960mm diam. incl. insulation, 2510mm height, 1.91 m2 lower heating coil, 1.78 ...