Abstract
ABSTRACT The national engineering Laboratory and the Shell research Laboratory have co-operated in applying the heat pipe to the problem of exhaust emission from petrol engine. In this paper, a complete design of heat pipe is carried out, taking into account the necessary criteria to decide various geometrical parameters. The design has been carried out using basic formulas in thermodynamics, heat transfer and physics. The results of this design have been checked for various practical limits. KEY WORDS: heat pip, working fluid, thermal conductance, air to fuel ratio, mixture, fuel.