| 摘要 |
<p>An oil or gas-fired hot water domestic heating system comprises a burner (10) and a heating boiler (12) with a continuous flow of water, and one or more Stirling units (11, 11a, 11b) which extract heat from the surrounding air (19) or from the waste air (14) from the dwelling and pump it up to the temperature level of the heating water, the burners and the boilers being arranged so that they are automatically controlled, particularly on cold days, and are capable of heating the house sufficiently without the assistance of water pumps. <IMAGE></p> |
