COMBINED HEAT AND PERFORMANCE UNIT FOR THE HOUSEHOLD

摘要

A DCHP unit with a Stirling engine ( 1 ), a burner ( 3 ) and a supplementary burner ( 11 ). Water is heated by exhaust gas from the Stirling engine and from the supplementary burner. If a sensor ( 18 ) detects that the water temperature has risen indicating that there is insufficient demand for the heat in the exhaust gas, a fan ( 15 ), ( 20 ) which normally provides the flow of air to the supplementary burner is operated without firing the burner to generate a flow of cool air to cool the water.