Welcome to Accumulator Tanks UK

Accumulator tanks (thermal stores) are the answer to all your renewable energy
heating and hot water needs.

For domestic and commercial application, the accumulator tank, or thermal store, enables the highest level of efficiency and flexibility in water based heating systems.

The accumulator tanks we supply are made in Finland and are highly insulated thermal storage vessels ranging in size from 300 to 5000 litres capacity filled with the primary water of the heating system. Their function is to collect and store heat energy from
any source and to allow flexible use of the heat energy, either directly for space
heating or via an internal heat exchanger for hot water.

An accumulator tank is the answer for all micro-generation renewables. Solar, biomass (wood chip boilers, log boilers etc.), wind turbine and heat pump sources of energy can all be connected to the thermal store and if the energy is not needed at the time of generation the tank will store it for later use.

The accumulator tank is especially suitable as a thermal store in log boiler systems. Log boilers need to be fired at high temperature in order to achieve high efficiency and should not be banked down. The accumulator tank is used to store the heat from at least one firing of a fully loaded log chamber, allowing use of the heat as required after the boiler has completed its cycle. A 'loading' or 'charging' unit (such as the Laddomat 21) is used to maintain a high return temperature to the boiler and to 'charge' the accumulator tank from the top downwards with high temperature water, thus creating layering or 'stratification'. Hot water is then available soon after lighting the boiler.

Accumulator Tanks UK is run by Peter de la Haye Engineering, who were accredited installers for biomass boilers under the Clear Skies accreditation scheme (closed on 31^st January 2008) and are agents for Veto, Baxi and Heizomatt wood boilers.

Example heat sources
Biomass Geothermal / groundwater heat Solar heat Wind Power Electricity Gas and Oil