Historically, several types of heat exchangers and different heat transfer enhancement measures such as ribbing, grooving and protrusions have been investigated since the first auto mobile thermoelectric generator(TEG) was built in 1963 [3].
Historically, several types of heat exchangers and different heat transfer enhancement measures such as ribbing, grooving and protrusions have been investigated since thefirst auto mobile thermoelectric generator(TEG) was built in 1963 [3].