Efficiency analysis of a repetitive pulsed-laser heating

The present study examines the entropy generation during cooling and heatin g cycles of repetitive pulsed-laser heating. Two repetitive pulses are intr oduced in the analysis. The possible thermal integration occurring at the w orkpiece surface due to repetitive pulse heating is then related to the sec ond-law efficiency of the heating process. It is found that the cooling per iods and low intensity decay rate result in a low total entropy generation number. The optimal cooling period satisfying the condition for the thermal integration does not result in the highest second law efficiency. (C) 1999 Elsevier Science Ltd. All rigths reserved.