| 摘要 |
<p>To increase the flow density in heat exchangers (70) traversed at a high speed by at least one gaz and applied preferably to motor vehicles, the acceleration energy of the gaz is provided by the exhaust gaz of the engine. Such method allows the use of a radiator for heating (70) the vehicle or cooling (156) the engine to accumulate and increase the energy provided by the exhaust gaz. When the engine is not working hard and requires only little cooling, the residual energy of the exhaust gaz may be used to increase the flow density in the exchanger (70) and heat the vehicle; when the engine is working very hard and the heating demand is low, the flow density in the exchanger may be increased for the cooling of the engine. Preferably, the heat exchanger device is provided with an accumulator engageable in the circuit (14) of the exhaust gaz for the heating of the vehicle.</p> |
