Abstract
This paper describes the benefits of interposing a thermally insulated heat store in the circuit between a central heating boiler and a hydronic heat distribution network. These include the energy savings attainable through less frequent switching on and off of the boiler each day and the possibility of using a smaller boiler to satisfy the heating demands of the building. Cranfield Institute of Technology (CIT) and the British Gas Corporation (BGC) have undertaken a collaborative programme of research into heat storage in central heating systems; a field trial at a London school is described. The installation was monitored from November 1984 to May 1985, and a description of its operation is given. A preliminary analysis of the experimental data reveals the effectiveness of this new hybrid system.
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