| 摘要 |
<p>A heat and electricity generating apparatus 201 for a boiler system 202 for use in a residential or small-scale building. The heat and electricity generating apparatus comprises a centrifugal air compressor 203, a turbo-expander 204 and an electric generator 205 operatively connected by a rotatable drive shaft 206. The apparatus further comprises a high-pressure combustor 207, a first heat exchanger 208, a second heat exchanger 209 and a diverter gate. In operation, a method of heat transfer is performed in which combustion product gas issued by the high-pressure combustor is passed to the first heat exchanger, directly, to heat compressed air issued by the centrifugal air compressor prior to entry into the high-pressure combustor, and is then passed through the second heat exchanger, to heat a heat conveying fluid. The position of the diverter gate may be manually adjustable. The position of the diverter gate may be automatically adjustable by means of an actuator under the control of a control unit.</p> |
