| 摘要 |
<p>PURPOSE:To make it possible to reduce pressure application force by a circulation pump and use a hot water tank as an expansion tank by supplying a proper flow rate of water to a cooling water heat exchanger and an exhaust heat exchanger in conformity with a specified temperature difference and opening to the atmosphere the flow-out side of an exhaust gas heat exchanger. CONSTITUTION:In order to collect cooling water heat and exhaust gas heat from a prime mover 1 by means of a cooling water heat exchanger and an exhaust gas heat exchanger 5, a circulation pump 6 is operated so as to circulate water in pipelines 19, 21, and 22. In the conventional heat application operation, the circulated water, which flows into a hot water heat exchanger 7 from a hot water tank 20, heats up water on the heat load side by driving a hot water pump 11, which lowers the temperature of water in the pipeline 19 on the discharge side of the hot water heat exchanger 7. The water whose temperature dropped flows into the cooling water heat exchanger 4 and the exhaust heat exchanger 5 in parallel by way of the thermal load control heat exchanger 8. After heated by the respective heat exchangers 4 and 5, the water flows into the hot water tank 20. The hot water, which has flown into the hot water tank 20, is arranged to circulate through a pipeline system and continues the heat utilization operation. On the other hand, the water is expanded between the prime mover 1 and the cooling water heat exchanger 4 is introduced into the hot water tank 20 by way of an expansion pipe 23 branched from the pipeline 17.</p> |
