| 摘要 |
<p>PROBLEM TO BE SOLVED: To control temperature of thermoelements within an upper limit despite of high exhaust gas temperature and ensure the power generation efficiency under low exhaust gas temperature for an exhaust heat recovery power generation system employing the thermoelements. SOLUTION: Thermoelements 4 and cooling jackets 5 are arranged on both sides of an exhaust pipe 3 and fastened by bolts 7 which penetrate the exhaust pipe 3 and the cooling jackets 5, so as to sandwich in these from outside of the cooling jackets 5. For making the bolts 7, a material having a larger thermal expansion coefficient than those of the exhaust pipe 3 and the thermoelements 4 is selected. Accordingly, when the exhaust temperature has become high, the contact pressure between the thermoelements 4 and the exhaust pipe 3 decreases, and the thermal heat resistance increases. As a result, a temperature rise which exceeds an upper limit of the thermoelements 4 can be prevented.</p> |
