PRESSURE DROP OF CUO-BASE OIL NANOFLUID FLOWINSIDE ANINCLINED TUBE

An emprical study was carried out to study pressure drop in forced laminar nanofluid flow inside an inclined copper tube under constant heat flux condition at the outer wall.The CuO-base oil nanofluid in different nanoparticle weight concentration of 0.5%, 1% and 2% was produced by means of ultrasonic device in two steps method.In this study, the effect of tube inclination and nanofluid with different concentration are sudied.Results show that using nanofluid has slightly increased the pressure drop. Also, increase of tube inclination from zero(horizontal) to 30 degree at constant nanofluid concentration, the pressure drop decreased for Re<170.