Research has been carried out on the theory, design and construction of waste heat recovery using heat pipes heat exchanger with nano fluid, especially their use in waste heat recovery for energy recovery in automobile exist, reduction of air pollution and environmental conservation. A heat pipe heat exchanger has been designed and constructed for heat recovery in exhaust from IC Engine, where the air must be changed up to 40 times per hour. In this research, the characteristic design and heat transfer limitations of single heat pipes without wick and working with Hybrid Nanofluids have been investigated. There has been increasing interest in nano fluid and its use in heat transfer enhancement. Nanofluids are suspensions of nano particles in fluids that show significant enhancement of their properties at modest nano particle concentrations.