| 摘要 |
<p>Method and apparatus for control of a stationary fan-cooled cooling system, especially of a large diesel engine (14), having a heat exchanger (10) through which airflow is passed by fans (15) driven by motors (16). To avoid waste of power by motors (16), and to extend their life, all the fluid to be cooled is continuously circulated through the heat exchanger (10) and one of a number of fans (15) is caused by a sequence control system (18) to start operation on increase in fluid temperature sensed by a sensor (17), and one to stop on decrease of temperature, the control system (18) selecting the fan each time in accordance with a criterion related to running time. The control system (18) may start a fan after a short delay on increase of temperature, and stop one after a substantial delay on decrease of temperature.</p> |
