Abstarct: Performance of heat transfer systems has been considered in past recent years. This attention guided investigations to using of new methods and mediums. New studies were started at applications of nanofluids and porous media. Experimental investigation of force convective heat transfer of nanofluids in a porous pipe has not been considered in the literature and this challenge is considered to be an open research topic that may require more study. This thesis is the first work which focuses on nanofluids flow and heat transfer in the porous media experimentally. Forced convective heat transfers of nanofluid were done in a porous pipe with constant wall tempreture and uniform heat fluix boundry condition. Alumina nanofluids in 5 volume fractions of 0.1, 0.25, 0.5, 1, 1.5% for uniform wall temperature condition and alumina nanofluids in 4 volume fractions of 0.1, 0.25, 0.5, 1% and CNT nanofluid in 3 volume fractions of 0.1, 0.25, 0.5% for constant heat generation condition that made by two step method is used for this experiment. Measurement of temperature and pressure drop of nanofluids along with the test section is done at each test. Results along with statical method, the confidence intervals, with 95% accuracy were reported. also for validate the test data an empty tube with the same properties of porous pipe with uniform wall temperature was used. The result of empty tube data was compared with one phase flow correlations in the literature as well as the physical properties of nanofluid such as viscosity and density has been considered in relations. The result of this comparison was shown an expectable error from correlations. The porous result in the constant wall temperature conditions shows maximum nusslet increase of 57% at Re=3704 for 1.5% alumina nanofluid in 50% pipe porosity and maximum nusslet increase of 45% at Re=3175 for 1.5% alumina nanofluids in 63% pipe porosity also result shows a significant increase of nusslet number in compare with empty tube. The result also shows maximum nusslet increase of 31% at Re=5388 for 1% alumina nanofluid and maximum nusslet increase of 33% at Re=3489 for 0.5% CNT nanofluids in uniform heat flux condition. The measured pressure drop also shows significant increase in compare with empty tube.