الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 115 |  |  |
| | | from | 115 | | |
Abstract
The thermal performance of an ammonia–water hydrogen absorption refrigeration system driven by the waste exhaust gases of an internal combustion Diesel engine as energy source was investigated experimentally. An automotive engine was tested in a test bench dynamometer, with the absorption refrigeration system adapted to the exhaust pipe via a heat exchanger. The engine was tested for different load torques (15 N.m, 30 N.m, and 45 N.m). The exhaust gas flow to the built-in heat exchanger into the generator was controlled manually using two control valves. The refrigerator reached a steady state temperature between 10 °C and 14.5 °C within 3.5 hours after system start up, depending on engine load. The maximum coefficient of performance was 0.10 obtained for the controlled exhaust mass flow case at 30 N.m torque after 3 hr from system startup. A maximum of almost 10% Waste Heat Recovery (WHR) is achieved for the current system. The maximum COP is recorded at exhaust gases temperatures supplied to the generator between 210 °C and 220 °C. The Minimum refrigeration temperature, however, is IV reached at exhaust gases temperatures supplied to the generator of 230 °C and 250 °C.