Bernoulli's theorem states that the total energy of an incompressible and inviscous fluid, liquid or gaseous, flowing stationary from one point to another remains constant throughout the movement. The Bernoulli equation recognizes that an increase in kinetic energy (velocity) triggers a decrease in pressure within the fluid. The Bernoulli equation relates the pressure at a point in the fluid to its position and velocity.P_2+ρ 〖u_2〗^2/2+(ρgh_2 )=P_1+ρ 〖u_1〗^2/2+(ρgh_1 ) (1)Both P_1 and P_2 represent the pressure at points one and two, ρ and u are the characteristics of the fluid, density and velocity, g represents the gravitational constant 9.81 m/s^2 and h_1 and h_2 indicate the heights at points one and two. Viscosity is a measure of a fluid's resistance to flow. An example of this is the comparison between honey and water; running honey through a tube is a slower process than repeating the same process with water, indicating that honey has a higher level of viscosity than water. Viscous properties tend to stabilize and organize the flow of a fluid, however excessive inertia of the fluid tends to disturb the flow leading to more disordered turbulent behavior. Kinematic viscosity is a dimensionless number that measures the ratio of absolute viscosity to density. In practice, fluids experience friction against the surface. The generated friction corresponds to an energy transformation from kinetic → heat and results in a –ΔP along the length of the fluid flow. We denote this energy loss between point 1 and point 2 as ΔPfriction and account for it experimentally, depending on whether the flow is described as laminar or turbulent by the Reynolds number. The Reynolds number is determined by the ratio of inertia forces to viscous forces. Re=ρuD/μ ...... half of the sheet ...... using the data P1 = P2 = Patm and U1 = U2 ≈ 0 m ∕s:〖∆P〗_pump/ρ=〖∆P〗 _f/ρ+ gz_2-gz_1 To determine a system curve, the flow rate must be determined at a series of points. By tracing both the system and pump curves together, it is possible to identify the operating point that corresponds to the ideal flow rate. The pump curve can be determined experimentally by modifying the system curve in two ways; by opening a valve or changing the difference in height. To study the aspects of fluid mechanics to take into account during the construction of our cooling tower, it is necessary to perform an analysis of the different behaviors of fluids under different conditions and test them against the flow evaluate. The experimental design should explore the influence of flow tube length as well as density and temperature on the fluid flow rate.