| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent freezing of cooling water circulated through a cooling water circulation passage and hot water for recovering exhaust heat, circulated through an exhaust heat recovering circulation passage without operating an exhaust heat generating device and without increasing costs. <P>SOLUTION: In the exhaust heat recovering device for recovering exhaust heat of the exhaust heat generating device 30 by heat exchange between the cooling water circulated to the exhaust heat generating device 30 through the cooling water circulation passage 32 and the hot water for recovering exhaust heat, circulated through the exhaust heat recovering circulation passage 5, an operation control portion 1 controlling an operation, executes an antifreezing operation processing for controlling operations of a hot water circulating means 6 for recovering exhaust heat and a cooling water circulating means 33 to heat the cooling water by the hot water for recovering exhaust heat through an exhaust heat recovery heat exchanger 31, by keeping an auxiliary heating means 10 for heating the hot water for recovering exhaust heat in a heating state when antifreezing starting conditions are satisfied in an operation stop state of the exhaust heat generating device 30. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
